Chelmsford Weather Station History
Since: January 1st, 2013

Updated: @ 22/09/2021 11:25 - next update at 01:00  
Measurement: Current: Yesterday Month / MTD Year / YTD Station Record
Temperature: Warmer 1.9°C than last hour.
Thermometer Average:
Maximum
Temperature:
Minimum
Temperature:
18.5°C
10.9°C
18.5°C
11:24
8.1°C
06:41
 
14.7°C
21°C
16:41
10.3°C
05:09
 
17.0°C
28.7°C
07-09
8.1°C
22-09
 
11.4°C
31.2°C
18-07
-4.6°C
11-02
 
---
38.0°C
25/07/2019
-8.5°C
27/03/2013
Wind Chill:
Wind Chill Minimum
Wind Chill:
18.5°C
8.1°C 
06:41
 
10.3°C
05:09
 
8.1°C
22-09
 
-9.2°C
13-02
 
-20.5°C
27/03/2013
Heat Index:
Heat Index Maximum
Heat Index:
18.4°C
18.5°C
11:24
 
21.0°C
16:41
 
29.2°C
07-09
 
35.4°C
16-06
 
45.3°C
25/07/2019
Solar Radiation W/m2:
Heat Index Maximum
Solar Radiation:
Sunshine
Hours:
215
215
11:25
03
Hours
 
432.7
13:33
08
Hours
 
591.7
12-09
79
Hours
 
897.0
13-06
929
Hours
 
1185.0
12/07/2014
---
 
Evapotranspiration:
Heat Index Watering
Index1:
0.7
0.7
mm
 
1.3
mm
 
24.9
mm
 
---
 
 
---
 
Rain2:
Rain / Snow Melt Rainfall
or Melt:
Average:
Percent of Average:
0.00 mm
0.00 mm
 
---
---
 
0.00 mm
 
---
---
 
27.90 mm
 
48.2 mm
57.9%
 
486.60 mm
 
599.8 mm
81.1%
Rec Year5
866.2 mm
2014
---
---
Humidity:
Humidity Maximum
Humidity:
Minimum
Humidity:
74%
100%
00:00
74%
11:15
 
100%
00:00
58%
16:31
 
100%
05-09
47%
18-09
 
100%
01-01
21%
09-06
 
100%
01/12/2012
0%
13/01/2017
Dew Point:
Dew Point Maximum
Dew Point:
Minimum
Dew Point:
13.8°C
15.3°C
10:04
8.1°C
06:41
 
14.2°C
14:08
10.3°C
05:09
 
19.9°C
10-09
8.1°C
22-09
 
31.5°C
06-09
-15.7°C
20-03
 
31.5°C
06/09/2021
-15.7°C
20/03/2021
Wind: W
wind Maximum
Avg Wind Speed:
Avg Wind Gust:
Maximum
Wind Gust:
Wind
Run:
0.0 mph
4.8 mph
10:41
0.1 mph
9.2 mph
10:40
1.40
Miles
 
4.2 mph
13:10
---
8.5 mph 11:49
1.73
Miles
 
10.4 mph
08-09
---
16.1 mph
08-09
434.49
Miles
 
23.0 mph
11-03
---
36.1 mph
06-08
10671.21
Miles
 
36.8 mph
01/03/2013
---
42.6 mph
09/02/2020
---
 
Barometer:  Falling 0.6 °C/hr( hPa)
Barometer Maximum
Barometer:
Minimum
Barometer:
1027.5
1029.4
00:08
1027.3
11:16
 
1030.3
11:21
1026.9
00:04
 
1030.7
01-09
1006.2
09-09
 
1042.7
27-02
973.1
21-01
 
1048.3
20/01/2020
970.5
04/12/2020
Measurement: Current: Yesterday Month / MTD Year / YTD Station Record
Version 3.02 - 31-Dec-2011 - Script by: WebsterWeatherLIVE.com
1Estimated amount of water needed to replace the water used by plants and evaporation from the past week.
(Negative numbers mean amount of water needed, positive numbers mean excess water is present.)
2Rain season: Jan 1st to Dec 31st.   5From this station's records based on complete years data for rain/snow season. Does not include current year/season

Φ = Average Reading