Navigation

UK Last 24hrs

High Temp
29C
Heathrow
 
Low Temp
6.8C
Altnaharra No 2
 
Precipitation
18.6mm
Tiree
 
Sunniest
9.3 hours
Exeter Airport No 2

© Crown Copyright 2026 Met Office

Cloudbase

Length of Day

14 hrs 27 min 53 sec
of Daylight Today
Which is
3 min 38 sec Shorter
Than Yesterday
(Noon)
Day-Night Graphic
(Midnight)

Moon Phase


Links

Weather Underground PWS IESSEXCH11
spacer
Updated: @ 18/08/2026 11:10 - next update at 01:00  
Summary / Temperature Wind Rain WeatherCam
Cloudy, Dry Cloudy, Dry
Currently: 21.3, Max: 21.6, Min: 18.0 21.3°C
Warmer 0.1°C than last hour.

---

Feels like: 22.4°C

24-hr difference
0.6°CWarmer 0.6°C than yesterday at this time.
  Today Yesterday
High: 21.6°C
02:31 		24.4°C
16:21
Low: 18°C
05:25 		16.6°C
07:03
Wind from SW SW
8
Gust:
 8 mph
2 Bft - Gentle Breeze
Today: 15 mph 11:02
Gust Month: 22.5 mph August 4
Rain Today: 0.254 mm
Rain Rate (/hr): 0 mm
Rain Yesterday: 0.5 mm
Storm Rain: 0 mm
This Month: 0.77 mm
Season Total: 433.5 mm
1 rain day in August.
Humidity & Barometer Almanac WebCam
Humidity: 76 %  
Dew Point: 16.9°C Increased 0.1°C since last hour.
Barometer: 1010.8 hPa  
Baro Trend: Steady
Sunrise: 05:47
Sunset: 20:15
Moonrise: 13:05
Moonset: 21:42
UV Index Forecast Solar Radiation
18/08/2026
5.7     Medium 
241 W/m2 (34 %)
High: 263 @  11:08
No Chelmsford Weather Station records broken today as of 18.08.2026 11:10
 WXSIM Weather Forecast  - Outlook: Today & Tonight
Today

Mostly Cloudy
Mostly Cloudy
High: 26°		 WXSIM forecast: Cloudy in the morning, becoming mostly cloudy in the afternoon. A chance of rain. Warm. High 26°. UV index up to 4. Wind west around 11 mph, gusting to 20 mph. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
 
Tonight

Cloudy
Cloudy
Low: 16°		 WXSIM forecast: Cloudy in the evening, becoming dense overcast after midnight. A slight chance of rain in the evening, then a chance of rain after midnight. Low 16°. Wind west-northwest around 6 mph, gusting to 16 mph. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
 WXSIM Short Term Weather Forecast
Wednesday

Chance rain
Chance rain
High: 24° 		Wednesday
night
Partly Cloudy
Partly Cloudy
Low: 14° 		Thursday

Thunder storm
Thunder storm
High: 23° 		Thursday
night
Mostly Cloudy
Mostly Cloudy
Low: 15° 		Friday

Chance rain
Chance rain
High: 18° 		Friday
night
Mostly Cloudy
Mostly Cloudy
Low: 12° 		Saturday

Partly Cloudy
Partly Cloudy
High: 22°
  WXSIM 5 Day Meteogram for Chelmsford
  UK Cloud Satellite / UK Rain Radar / UK Temperatures
Countdown to Autumn
 Autumn Equinox begins September 23rd at 1:05am   BST