Chelmsford Weather Station

Daily / Monthly Weather History From This Station

Select a report and click submit:

September 2021 August 2021 July 2021 June 2021 May 2021 April 2021 March 2021 February 2021 January 2021 December 2020 November 2020 October 2020 September 2020 August 2020 July 2020 June 2020 May 2020 April 2020 March 2020 February 2020 January 2020 December 2019 November 2019 October 2019 September 2019 August 2019 July 2019 June 2019 May 2019 April 2019 March 2019 February 2019 January 2019 December 2018 November 2018 October 2018 September 2018 August 2018 July 2018 June 2018 May 2018 April 2018 March 2018 February 2018 January 2018 December 2017 November 2017 October 2017 September 2017 August 2017 July 2017 June 2017 May 2017 April 2017 March 2017 February 2017 January 2017 December 2016 November 2016 October 2016 September 2016 August 2016 July 2016 June 2016 May 2016 April 2016 March 2016 February 2016 January 2016 December 2015 November 2015 October 2015 September 2015 August 2015 July 2015 June 2015 May 2015 April 2015 March 2015 February 2015 January 2015 December 2014 November 2014 October 2014 September 2014 August 2014 July 2014 June 2014 May 2014 April 2014 March 2014 February 2014 January 2014 December 2013 November 2013 October 2013 September 2013 August 2013 July 2013 June 2013 May 2013 April 2013 March 2013 February 2013 January 2013

Daily Report for the month of September 2021

1 September Average and Extremes
Average temperature	16.0°C
Average humidity	84%
Average dewpoint	13.1°C
Average barometer	1029.7 hPa
Average windspeed	1.5 mph
Average gustspeed	4.3 mph
Average direction	66° (ENE)
Rainfall for month	0.0 mm
Rainfall for year	459.1 mm
Maximum rain per minute	0.0 mm on 01 at 00:00
Maximum temperature	19.6°C on 01 at 15:40
Minimum temperature	14.1°C on 01 at 07:00
Maximum humidity	96% on 01 at 05:20
Minimum humidity	63% on 01 at 15:54
Maximum pressure	1030.7 hPa on 01 at 10:47
Minimum pressure	1028.5 hPa on 01 at 19:48
Maximum windspeed	4.4 mph on 01 at 16:42
Maximum gust speed	11.5 mph from 056 °(NE) on 01 at 20:43
Maximum heat index	19.6°C on 01 at 15:40

24 Hour Graph of this day is not available (20210901.gif)

2 September Average and Extremes
Average temperature	16.5°C
Average humidity	81%
Average dewpoint	13.1°C
Average barometer	1027.0 hPa
Average windspeed	1.8 mph
Average gustspeed	4.8 mph
Average direction	83° (E)
Rainfall for month	0.0 mm
Rainfall for year	459.1 mm
Maximum rain per minute	0.0 mm on 02 at 23:59
Maximum temperature	20.5°C on 02 at 16:45
Minimum temperature	14.6°C on 02 at 07:52
Maximum humidity	94% on 02 at 07:22
Minimum humidity	62% on 02 at 17:00
Maximum pressure	1029.4 hPa on 02 at 00:17
Minimum pressure	1024.2 hPa on 02 at 23:54
Maximum windspeed	5.1 mph on 02 at 13:38
Maximum gust speed	13.8 mph from 062 °(ENE) on 02 at 12:41
Maximum heat index	24.3°C on 02 at 16:57

24 Hour Graph of this day is not available (20210902.gif)

3 September Average and Extremes
Average temperature	16.9°C
Average humidity	83%
Average dewpoint	13.9°C
Average barometer	1021.0 hPa
Average windspeed	1.2 mph
Average gustspeed	3.4 mph
Average direction	115° (ESE)
Rainfall for month	0.0 mm
Rainfall for year	459.1 mm
Maximum rain per minute	0.0 mm on 03 at 23:59
Maximum temperature	21.6°C on 03 at 14:49
Minimum temperature	14.3°C on 03 at 06:18
Maximum humidity	95% on 03 at 21:15
Minimum humidity	66% on 03 at 15:13
Maximum pressure	1024.5 hPa on 03 at 00:13
Minimum pressure	1018.7 hPa on 03 at 19:33
Maximum windspeed	5.5 mph on 03 at 17:42
Maximum gust speed	11.5 mph from 134 °(SE) on 03 at 18:08
Maximum heat index	23.9°C on 03 at 14:49

24 Hour Graph of this day is not available (20210903.gif)

4 September Average and Extremes
Average temperature	15.9°C
Average humidity	89%
Average dewpoint	14.0°C
Average barometer	1018.2 hPa
Average windspeed	1.1 mph
Average gustspeed	3.1 mph
Average direction	114° (ESE)
Rainfall for month	0.0 mm
Rainfall for year	459.1 mm
Maximum rain per minute	0.0 mm on 04 at 23:59
Maximum temperature	19.4°C on 04 at 15:44
Minimum temperature	13.1°C on 04 at 23:59
Maximum humidity	98% on 04 at 23:59
Minimum humidity	78% on 04 at 16:58
Maximum pressure	1019.5 hPa on 04 at 00:24
Minimum pressure	1017.1 hPa on 04 at 17:33
Maximum windspeed	4.0 mph on 04 at 13:41
Maximum gust speed	10.4 mph from 122 °(ESE) on 04 at 16:53
Maximum heat index	19.4°C on 04 at 15:44

24 Hour Graph of this day is not available (20210904.gif)

5 September Average and Extremes
Average temperature	17.4°C
Average humidity	86%
Average dewpoint	14.7°C
Average barometer	1019.8 hPa
Average windspeed	1.5 mph
Average gustspeed	3.3 mph
Average direction	120° (ESE)
Rainfall for month	0.0 mm
Rainfall for year	459.1 mm
Maximum rain per minute	0.0 mm on 05 at 23:59
Maximum temperature	23.9°C on 05 at 15:45
Minimum temperature	12.3°C on 05 at 02:02
Maximum humidity	100% on 05 at 23:59
Minimum humidity	55% on 05 at 14:40
Maximum pressure	1021.8 hPa on 05 at 23:36
Minimum pressure	1018.2 hPa on 05 at 05:54
Maximum windspeed	6.4 mph on 05 at 13:35
Maximum gust speed	13.8 mph from 127 °(SE) on 05 at 14:41
Maximum heat index	25.2°C on 05 at 15:45

24 Hour Graph of this day is not available (20210905.gif)

6 September Average and Extremes
Average temperature	18.6°C
Average humidity	85%
Average dewpoint	15.7°C
Average barometer	1022.2 hPa
Average windspeed	0.3 mph
Average gustspeed	1.2 mph
Average direction	103° (ESE)
Rainfall for month	0.0 mm
Rainfall for year	459.1 mm
Maximum rain per minute	0.0 mm on 06 at 23:59
Maximum temperature	26.4°C on 06 at 16:11
Minimum temperature	11.9°C on 06 at 06:48
Maximum humidity	100% on 06 at 09:22
Minimum humidity	59% on 06 at 17:24
Maximum pressure	1023.2 hPa on 06 at 10:43
Minimum pressure	1021.2 hPa on 06 at 04:53
Maximum windspeed	2.3 mph on 06 at 17:43
Maximum gust speed	8.1 mph from 148 °(SSE) on 06 at 12:28
Maximum heat index	27.5°C on 06 at 16:11

24 Hour Graph of this day is not available (20210906.gif)

7 September Average and Extremes
Average temperature	19.7°C
Average humidity	75%
Average dewpoint	14.4°C
Average barometer	1020.2 hPa
Average windspeed	1.0 mph
Average gustspeed	2.3 mph
Average direction	128° (SE)
Rainfall for month	0.0 mm
Rainfall for year	459.1 mm
Maximum rain per minute	0.0 mm on 07 at 23:59
Maximum temperature	28.7°C on 07 at 15:16
Minimum temperature	12.8°C on 07 at 06:56
Maximum humidity	100% on 07 at 09:00
Minimum humidity	43% on 07 at 18:24
Maximum pressure	1022.4 hPa on 07 at 00:12
Minimum pressure	1017.3 hPa on 07 at 23:39
Maximum windspeed	5.2 mph on 07 at 14:40
Maximum gust speed	12.7 mph from 126 °(SE) on 07 at 17:36
Maximum heat index	29.2°C on 07 at 15:16

24 Hour Graph of this day is not available (20210907.gif)

8 September Average and Extremes
Average temperature	20.1°C
Average humidity	79%
Average dewpoint	15.7°C
Average barometer	1012.4 hPa
Average windspeed	2.1 mph
Average gustspeed	4.1 mph
Average direction	124° (SE)
Rainfall for month	0.0 mm
Rainfall for year	459.1 mm
Maximum rain per minute	0.0 mm on 08 at 23:59
Maximum temperature	27.1°C on 08 at 14:26
Minimum temperature	14.6°C on 08 at 05:36
Maximum humidity	100% on 08 at 08:12
Minimum humidity	41% on 08 at 14:28
Maximum pressure	1017.5 hPa on 08 at 00:04
Minimum pressure	1008.0 hPa on 08 at 22:09
Maximum windspeed	8.2 mph on 08 at 15:35
Maximum gust speed	16.1 mph from 132 °(SE) on 08 at 14:25
Maximum heat index	27.2°C on 08 at 14:12

24 Hour Graph of this day is not available (20210908.gif)

9 September Average and Extremes
Average temperature	19.2°C
Average humidity	89%
Average dewpoint	17.1°C
Average barometer	1007.3 hPa
Average windspeed	1.3 mph
Average gustspeed	3.4 mph
Average direction	246° (WSW)
Rainfall for month	2.5 mm
Rainfall for year	461.6 mm
Maximum rain per minute	1.5 mm on 09 at 05:06
Maximum temperature	25.4°C on 09 at 15:19
Minimum temperature	15.1°C on 09 at 06:26
Maximum humidity	100% on 09 at 23:59
Minimum humidity	62% on 09 at 16:27
Maximum pressure	1009.0 hPa on 09 at 00:27
Minimum pressure	1006.2 hPa on 09 at 17:46
Maximum windspeed	4.9 mph on 09 at 14:32
Maximum gust speed	16.1 mph from 271 °(W) on 09 at 18:09
Maximum heat index	26.4°C on 09 at 14:37

24 Hour Graph of this day is not available (20210909.gif)

10 September Average and Extremes
Average temperature	17.9°C
Average humidity	95%
Average dewpoint	17.1°C
Average barometer	1009.3 hPa
Average windspeed	0.9 mph
Average gustspeed	2.7 mph
Average direction	245° (WSW)
Rainfall for month	13.4 mm
Rainfall for year	472.5 mm
Maximum rain per minute	0.3 mm on 10 at 14:03
Maximum temperature	23.1°C on 10 at 12:59
Minimum temperature	15.0°C on 10 at 06:18
Maximum humidity	100% on 10 at 23:59
Minimum humidity	74% on 10 at 12:57
Maximum pressure	1012.4 hPa on 10 at 23:58
Minimum pressure	1007.4 hPa on 10 at 02:45
Maximum windspeed	6.3 mph on 10 at 13:16
Maximum gust speed	16.1 mph from 284 °(WNW) on 10 at 13:10
Maximum heat index	23.8°C on 10 at 12:57

24 Hour Graph of this day is not available (20210910.gif)

11 September Average and Extremes
Average temperature	18.8°C
Average humidity	83%
Average dewpoint	15.6°C
Average barometer	1014.4 hPa
Average windspeed	1.4 mph
Average gustspeed	3.9 mph
Average direction	279° (W)
Rainfall for month	13.4 mm
Rainfall for year	472.5 mm
Maximum rain per minute	0.0 mm on 11 at 23:59
Maximum temperature	24.3°C on 11 at 15:49
Minimum temperature	16.1°C on 11 at 00:03
Maximum humidity	100% on 11 at 08:09
Minimum humidity	53% on 11 at 15:51
Maximum pressure	1016.7 hPa on 11 at 23:47
Minimum pressure	1012.1 hPa on 11 at 01:04
Maximum windspeed	6.4 mph on 11 at 14:15
Maximum gust speed	12.7 mph from 261 °(W) on 11 at 14:55
Maximum heat index	25.5°C on 11 at 15:48

24 Hour Graph of this day is not available (20210911.gif)

12 September Average and Extremes
Average temperature	16.6°C
Average humidity	81%
Average dewpoint	13.0°C
Average barometer	1017.4 hPa
Average windspeed	0.4 mph
Average gustspeed	1.9 mph
Average direction	29° (NNE)
Rainfall for month	13.4 mm
Rainfall for year	472.5 mm
Maximum rain per minute	0.0 mm on 12 at 23:59
Maximum temperature	22.1°C on 12 at 13:51
Minimum temperature	11.5°C on 12 at 05:58
Maximum humidity	100% on 12 at 07:40
Minimum humidity	52% on 12 at 14:35
Maximum pressure	1019.1 hPa on 12 at 22:14
Minimum pressure	1016.2 hPa on 12 at 03:38
Maximum windspeed	2.8 mph on 12 at 21:09
Maximum gust speed	9.2 mph from 122 °(ESE) on 12 at 20:58
Maximum heat index	24.9°C on 12 at 14:35

24 Hour Graph of this day is not available (20210912.gif)

13 September Average and Extremes
Average temperature	15.5°C
Average humidity	88%
Average dewpoint	13.3°C
Average barometer	1017.1 hPa
Average windspeed	1.6 mph
Average gustspeed	3.6 mph
Average direction	123° (ESE)
Rainfall for month	13.4 mm
Rainfall for year	472.5 mm
Maximum rain per minute	0.0 mm on 13 at 23:59
Maximum temperature	20.4°C on 13 at 14:36
Minimum temperature	11.4°C on 13 at 06:43
Maximum humidity	100% on 13 at 08:28
Minimum humidity	62% on 13 at 14:34
Maximum pressure	1018.9 hPa on 13 at 01:05
Minimum pressure	1014.5 hPa on 13 at 23:59
Maximum windspeed	5.8 mph on 13 at 15:52
Maximum gust speed	12.7 mph from 142 °(SE) on 13 at 14:17
Maximum heat index	24.2°C on 13 at 14:34

24 Hour Graph of this day is not available (20210913.gif)

14 September Average and Extremes
Average temperature	16.4°C
Average humidity	100%
Average dewpoint	16.4°C
Average barometer	1010.8 hPa
Average windspeed	0.2 mph
Average gustspeed	1.2 mph
Average direction	19° (NNE)
Rainfall for month	22.0 mm
Rainfall for year	481.1 mm
Maximum rain per minute	0.3 mm on 14 at 11:26
Maximum temperature	18.3°C on 14 at 13:53
Minimum temperature	14.0°C on 14 at 01:27
Maximum humidity	100% on 14 at 23:59
Minimum humidity	96% on 14 at 00:02
Maximum pressure	1014.7 hPa on 14 at 00:04
Minimum pressure	1009.2 hPa on 14 at 17:55
Maximum windspeed	2.2 mph on 14 at 06:12
Maximum gust speed	9.2 mph from 133 °(SE) on 14 at 06:10
Maximum heat index	18.3°C on 14 at 13:53

24 Hour Graph of this day is not available (20210914.gif)

15 September Average and Extremes
Average temperature	15.9°C
Average humidity	91%
Average dewpoint	14.3°C
Average barometer	1012.8 hPa
Average windspeed	0.5 mph
Average gustspeed	2.0 mph
Average direction	349° (N)
Rainfall for month	22.0 mm
Rainfall for year	481.1 mm
Maximum rain per minute	0.0 mm on 15 at 23:59
Maximum temperature	20.5°C on 15 at 14:34
Minimum temperature	11.4°C on 15 at 23:59
Maximum humidity	100% on 15 at 23:59
Minimum humidity	68% on 15 at 14:41
Maximum pressure	1015.8 hPa on 15 at 23:59
Minimum pressure	1010.0 hPa on 15 at 02:41
Maximum windspeed	4.9 mph on 15 at 13:15
Maximum gust speed	15.0 mph from 356 °(N) on 15 at 13:12
Maximum heat index	23.5°C on 15 at 14:36

24 Hour Graph of this day is not available (20210915.gif)

16 September Average and Extremes
Average temperature	15.9°C
Average humidity	86%
Average dewpoint	13.2°C
Average barometer	1016.1 hPa
Average windspeed	0.5 mph
Average gustspeed	1.5 mph
Average direction	297° (WNW)
Rainfall for month	22.0 mm
Rainfall for year	481.1 mm
Maximum rain per minute	0.0 mm on 16 at 23:58
Maximum temperature	24.1°C on 16 at 15:05
Minimum temperature	9.1°C on 16 at 05:49
Maximum humidity	100% on 16 at 23:58
Minimum humidity	54% on 16 at 15:45
Maximum pressure	1017.2 hPa on 16 at 10:34
Minimum pressure	1014.9 hPa on 16 at 19:18
Maximum windspeed	3.3 mph on 16 at 16:05
Maximum gust speed	10.4 mph from 260 °(W) on 16 at 15:40
Maximum heat index	25.4°C on 16 at 15:05

24 Hour Graph of this day is not available (20210916.gif)

17 September Average and Extremes
Average temperature	16.1°C
Average humidity	88%
Average dewpoint	13.9°C
Average barometer	1013.7 hPa
Average windspeed	0.5 mph
Average gustspeed	1.7 mph
Average direction	238° (WSW)
Rainfall for month	22.0 mm
Rainfall for year	481.1 mm
Maximum rain per minute	0.0 mm on 17 at 23:48
Maximum temperature	22.8°C on 17 at 14:36
Minimum temperature	11.6°C on 17 at 04:43
Maximum humidity	100% on 17 at 23:48
Minimum humidity	58% on 17 at 15:26
Maximum pressure	1016.1 hPa on 17 at 00:16
Minimum pressure	1011.9 hPa on 17 at 18:21
Maximum windspeed	2.9 mph on 17 at 10:11
Maximum gust speed	9.2 mph from 261 °(W) on 17 at 11:05
Maximum heat index	24.7°C on 17 at 14:36

24 Hour Graph of this day is not available (20210917.gif)

18 September Average and Extremes
Average temperature	18.1°C
Average humidity	82%
Average dewpoint	14.4°C
Average barometer	1013.1 hPa
Average windspeed	0.8 mph
Average gustspeed	2.4 mph
Average direction	161° (SSE)
Rainfall for month	22.0 mm
Rainfall for year	481.1 mm
Maximum rain per minute	0.0 mm on 18 at 23:59
Maximum temperature	24.8°C on 18 at 15:58
Minimum temperature	12.4°C on 18 at 03:05
Maximum humidity	100% on 18 at 09:32
Minimum humidity	47% on 18 at 16:04
Maximum pressure	1014.0 hPa on 18 at 11:29
Minimum pressure	1012.1 hPa on 18 at 17:06
Maximum windspeed	4.3 mph on 18 at 17:00
Maximum gust speed	11.5 mph from 147 °(SSE) on 18 at 17:26
Maximum heat index	25.8°C on 18 at 15:58

24 Hour Graph of this day is not available (20210918.gif)

19 September Average and Extremes
Average temperature	17.5°C
Average humidity	92%
Average dewpoint	16.0°C
Average barometer	1013.0 hPa
Average windspeed	0.3 mph
Average gustspeed	1.4 mph
Average direction	99° (E)
Rainfall for month	27.1 mm
Rainfall for year	486.2 mm
Maximum rain per minute	0.3 mm on 19 at 22:40
Maximum temperature	22.8°C on 19 at 13:39
Minimum temperature	13.9°C on 19 at 23:40
Maximum humidity	100% on 19 at 23:59
Minimum humidity	62% on 19 at 13:34
Maximum pressure	1016.3 hPa on 19 at 23:59
Minimum pressure	1011.2 hPa on 19 at 04:45
Maximum windspeed	4.5 mph on 19 at 17:35
Maximum gust speed	13.8 mph from 340 °(NNW) on 19 at 17:25
Maximum heat index	24.6°C on 19 at 13:34

24 Hour Graph of this day is not available (20210919.gif)

20 September Average and Extremes
Average temperature	15.0°C
Average humidity	97%
Average dewpoint	14.5°C
Average barometer	1021.2 hPa
Average windspeed	0.9 mph
Average gustspeed	3.2 mph
Average direction	17° (NNE)
Rainfall for month	28.4 mm
Rainfall for year	487.5 mm
Maximum rain per minute	0.3 mm on 20 at 17:43
Maximum temperature	19.6°C on 20 at 15:36
Minimum temperature	12.8°C on 20 at 06:46
Maximum humidity	100% on 20 at 23:59
Minimum humidity	80% on 20 at 15:41
Maximum pressure	1027.3 hPa on 20 at 23:51
Minimum pressure	1016.1 hPa on 20 at 00:05
Maximum windspeed	2.5 mph on 20 at 11:36
Maximum gust speed	12.7 mph from 053 °(NE) on 20 at 08:19
Maximum heat index	19.5°C on 20 at 15:36

24 Hour Graph of this day is not available (20210920.gif)

21 September Average and Extremes
Average temperature	14.7°C
Average humidity	88%
Average dewpoint	12.4°C
Average barometer	1028.9 hPa
Average windspeed	0.1 mph
Average gustspeed	0.5 mph
Average direction	338° (NNW)
Rainfall for month	28.4 mm
Rainfall for year	487.5 mm
Maximum rain per minute	0.3 mm on 21 at 18:50
Maximum temperature	21.0°C on 21 at 16:43
Minimum temperature	10.3°C on 21 at 05:11
Maximum humidity	100% on 21 at 23:59
Minimum humidity	58% on 21 at 16:38
Maximum pressure	1030.3 hPa on 21 at 11:23
Minimum pressure	1027.0 hPa on 21 at 00:16
Maximum windspeed	1.2 mph on 21 at 13:14
Maximum gust speed	8.1 mph from 349 °(N) on 21 at 11:50
Maximum heat index	24.6°C on 21 at 16:34

24 Hour Graph of this day is not available (20210921.gif)

Average and Extremes for Month of September 2021 up to day 21
Average temperature	17.1°C; diff from climate av: +1.6°C
Average humidity	87%
Average dewpoint	14.6°C
Average barometer	1017.5 hPa
Average windspeed	1.0 mph
Average gustspeed	2.7 mph
Average direction	116° (ESE)
Rainfall for month	27.9 mm
Rainfall for year	486.6 mm
Maximum rain per minute	1.5 mm on 09 at 05:06
Maximum temperature	28.7°C on 07 at 15:16
Minimum temperature	9.1°C on 16 at 05:49
Maximum humidity	100% on 22 at 00:06
Minimum humidity	41% on 08 at 14:28
Maximum pressure	1030.7 hPa on 01 at 10:47
Minimum pressure	1006.2 hPa on 09 at 17:46
Maximum windspeed	8.2 mph from 132°(SE) on 08 at 15:35
Maximum gust speed	16.1 mph from 293°(WNW) on 10 at 13:10
Maximum heat index	29.2°C on 07 at 15:16
Avg daily max temp	22.7°C
Avg daily min temp	13.0°C
Growing degrees days	164.8 GDD

Day, Sunshine Hours, ET, Max Solar, UV
01 00:24hrs	ET :0.9 mm	287.2 W/m²
02 01:18hrs	ET :1.2 mm	323.1 W/m²
03 00:30hrs	ET :1.2 mm	297.0 W/m²
04 00:00hrs	ET :0.6 mm	111.1 W/m²
05 07:24hrs	ET :1.8 mm	449.1 W/m²
06 08:24hrs	ET :2.0 mm	507.7 W/m²
07 11:06hrs	ET :2.5 mm	537.6 W/m²
08 07:12hrs	ET :2.4 mm	432.3 W/m²
09 03:36hrs	ET :1.4 mm	387.4 W/m²
10 01:00hrs	ET :0.8 mm	211.6 W/m²
11 04:12hrs	ET :1.4 mm	418.0 W/m²
12 04:30hrs	ET :1.1 mm	591.7 W/m²
13 04:00hrs	ET :1.1 mm	408.8 W/m²
14 00:00hrs	ET :0.1 mm	21.2 W/m²
15 02:06hrs	ET :0.8 mm	500.2 W/m²
16 07:12hrs	ET :1.6 mm	495.4 W/m²
17 02:48hrs	ET :1.0 mm	446.4 W/m²
18 00:00hrs	ET :0.7 mm	0.0 W/m²
19 01:18hrs	ET :0.5 mm	379.4 W/m²
20 00:24hrs	ET :0.6 mm	261.7 W/m²
21 08:30hrs	ET :1.3 mm	432.8 W/m²

Daily Rain Totals

02.5 mm on 9

10.9 mm on 10

08.6 mm on 14

05.1 mm on 19

01.3 mm on 20