Average annual temperature is 11.8 °C
Absolute maximum temperature: 35.2 °C
Absolute minimum temperature: -21.6 °C
Number of sunny days: 170 days
Number of rainy days: 184 days
Number of snow days: 11 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) | 14.6 | 18.0 | 15.7 | 32.4 | 28.8 | 33.6 | 32.8 | 30.1 | 35.2 | 28.0 | 19.2 | 17.3 |
| Average daytime temperature (°C) | 7.1 | 6.8 | 9.5 | 18.0 | 21.5 | 25.4 | 29.5 | 26.6 | 23.9 | 19.0 | 10.1 | 8.4 |
| Average temperature (°C) | 3.1 | 1.6 | 4.0 | 11.3 | 14.9 | 19.2 | 24.0 | 21.5 | 18.8 | 13.8 | 4.7 | 3.9 |
| Average night temperature (°C) | -0.4 | -2.8 | -0.7 | 6.0 | 8.6 | 14.1 | 19.5 | 17.2 | 15.1 | 9.7 | 0.6 | 0.5 |
| Absolute minimum temperature (°C) | -5.8 | -21.6 | -9.2 | -3.1 | 3.1 | 8.3 | 14.6 | 12.9 | 7.0 | 3.9 | -4.8 | -6.4 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 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) | 9.5 | 10.6 | 11.9 | 13.3 | 14.5 | 15.2 | 14.9 | 13.8 | 12.5 | 11.1 | 9.9 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 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 | 6.3 | 7.3 | 8.5 | 12.0 | 10.6 | 10.8 | 9.7 | 7.5 | 7.6 | 7.1 | 5.0 |
| Precipitation (mm) | 139 | 51 | 119 | 105 | 70 | 64 | 185 | 115 | 243 | 70 | 43 | 200 |
| Sunny days | 9 | 15 | 14 | 15 | 21 | 7 | 10 | 11 | 14 | 16 | 21 | 17 |
| Rainy days | 16 | 10 | 15 | 15 | 10 | 23 | 21 | 20 | 16 | 15 | 9 | 14 |
| Snow days | 6 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Hartford during the most sunny months:
The largest precipitation sum in Hartford is at