Average annual temperature is 12.3 °C
Absolute maximum temperature: 36.6 °C
Absolute minimum temperature: -17.1 °C
Number of sunny days: 214 days
Number of rainy days: 135 days
Number of snow days: 16 days
Look at detailed online map of Hartford
* Weather data for Hartford 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) | 13.2 | 15.5 | 20.9 | 28.2 | 31.1 | 32.6 | 36.1 | 36.6 | 33.5 | 31.7 | 20.3 | 14.5 |
| Average daytime temperature (°C) | 3.9 | 7.6 | 8.9 | 18.0 | 25.4 | 29.4 | 29.4 | 28.5 | 27.1 | 18.8 | 11.6 | 7.3 |
| Average temperature (°C) | -0.7 | 0.8 | 3.4 | 11.0 | 18.5 | 23.0 | 23.7 | 23.3 | 20.7 | 13.7 | 6.0 | 3.4 |
| Average night temperature (°C) | -3.9 | -4.3 | -0.8 | 5.3 | 12.0 | 16.9 | 18.7 | 19.1 | 15.4 | 9.6 | 1.7 | 0.3 |
| Absolute minimum temperature (°C) | -14.3 | -17.1 | -12.5 | -3.1 | 3.1 | 8.6 | 14.2 | 12.6 | 9.7 | -3.3 | -8.6 | -6.4 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 9.3 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.3 | 7.6 | 7.1 | 9.8 | 11.7 | 12.2 | 11.8 | 10.7 | 10.7 | 7.5 | 7.2 | 4.8 |
| Precipitation (mm) | 43 | 93 | 87 | 29 | 78 | 44 | 110 | 122 | 11 | 63 | 19 | 84 |
| Sunny days | 16 | 19 | 13 | 17 | 21 | 16 | 16 | 14 | 24 | 18 | 25 | 15 |
| Rainy days | 9 | 6 | 15 | 12 | 10 | 14 | 15 | 17 | 6 | 13 | 4 | 14 |
| Snow days | 6 | 3 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
The best time to visit Hartford during the most sunny months:
The largest precipitation sum in Hartford is at