Average annual temperature is 10.7 °C
Absolute maximum temperature: 33.1 °C
Absolute minimum temperature: -25.3 °C
Number of sunny days: 162 days
Number of rainy days: 192 days
Number of snow days: 11 days
Look at detailed online map of West Chelmsford
* Weather data for West Chelmsford United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 12.1 | 15.3 | 16.3 | 31.2 | 30.7 | 32.3 | 32.0 | 28.4 | 33.1 | 28.0 | 18.4 | 16.3 |
| Average daytime temperature (°C) | 5.3 | 5.4 | 7.6 | 15.6 | 21.1 | 23.5 | 28.0 | 25.4 | 22.9 | 18.6 | 8.9 | 7.7 |
| Average temperature (°C) | 1.4 | -0.3 | 2.6 | 9.6 | 14.4 | 17.8 | 23.0 | 20.5 | 18.2 | 13.5 | 3.8 | 3.1 |
| Average night temperature (°C) | -2.2 | -5.1 | -1.7 | 5.1 | 8.8 | 13.5 | 19.0 | 16.6 | 14.7 | 9.6 | 0.1 | -0.1 |
| Absolute minimum temperature (°C) | -11.2 | -25.3 | -6.2 | -3.4 | 2.1 | 7.0 | 13.8 | 12.3 | 7.1 | 1.3 | -5.4 | -7.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.5 | 10.6 | 11.9 | 13.4 | 14.6 | 15.3 | 15.0 | 13.9 | 12.5 | 11.1 | 9.8 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.2 | 6.1 | 7.3 | 8.3 | 11.2 | 8.9 | 10.3 | 9.5 | 7.2 | 7.4 | 7.0 | 5.4 |
| Precipitation (mm) | 179 | 50 | 145 | 84 | 80 | 151 | 180 | 112 | 225 | 85 | 40 | 145 |
| Sunny days | 8 | 12 | 14 | 17 | 19 | 7 | 7 | 11 | 11 | 18 | 20 | 18 |
| Rainy days | 19 | 12 | 15 | 13 | 12 | 23 | 24 | 20 | 19 | 13 | 9 | 13 |
| Snow days | 4 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
The best time to visit West Chelmsford during the most sunny months:
Months with the longest average daylight duration in West Chelmsford:
The largest precipitation sum in West Chelmsford is at