Average annual temperature is 20.1 °C
Absolute maximum temperature: 39.7 °C
Absolute minimum temperature: -2.4 °C
Number of sunny days: 183 days
Number of rainy days: 182 days
Look at detailed online map of Needham
* Weather data for Needham 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) | 25.5 | 28.0 | 30.0 | 30.9 | 35.2 | 38.3 | 38.2 | 39.7 | 35.3 | 31.8 | 27.5 | 24.9 |
| Average daytime temperature (°C) | 17.7 | 20.9 | 22.7 | 24.8 | 30.0 | 33.1 | 34.5 | 37.0 | 32.5 | 26.3 | 19.7 | 16.6 |
| Average temperature (°C) | 12.5 | 14.8 | 16.4 | 18.5 | 23.0 | 26.5 | 28.2 | 30.1 | 26.1 | 20.1 | 14.0 | 10.9 |
| Average night temperature (°C) | 8.7 | 10.6 | 11.6 | 13.5 | 17.6 | 21.3 | 23.6 | 24.8 | 21.0 | 15.0 | 9.6 | 6.4 |
| Absolute minimum temperature (°C) | -0.6 | -0.4 | -2.4 | 8.3 | 10.7 | 19.3 | 21.0 | 20.4 | 17.0 | 7.9 | 1.0 | 0.6 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.3 | 11.0 | 12.0 | 13.0 | 13.8 | 14.2 | 14.0 | 13.3 | 12.4 | 11.4 | 10.5 | 10.1 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 6.5 | 7.3 | 8.5 | 9.3 | 10.9 | 11.5 | 11.0 | 11.5 | 10.9 | 9.1 | 6.8 | 7.8 |
| Precipitation (mm) | 152 | 177 | 130 | 158 | 98 | 136 | 113 | 44 | 41 | 54 | 71 | 83 |
| Sunny days | 15 | 9 | 16 | 14 | 11 | 7 | 9 | 17 | 19 | 26 | 19 | 21 |
| Rainy days | 16 | 19 | 15 | 16 | 20 | 23 | 22 | 14 | 11 | 5 | 11 | 10 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Needham is at