Average annual temperature is 10.8 °C
Absolute maximum temperature: 33.1 °C
Absolute minimum temperature: -13.4 °C
Number of sunny days: 157 days
Number of rainy days: 181 days
Number of snow days: 27 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) | 12.8 | 12.4 | 19.0 | 27.0 | 32.3 | 32.3 | 32.5 | 33.1 | 31.6 | 29.2 | 17.3 | 14.1 |
| Average daytime temperature (°C) | 3.4 | 4.6 | 7.0 | 15.6 | 21.3 | 26.1 | 27.1 | 26.1 | 23.6 | 16.2 | 9.3 | 6.7 |
| Average temperature (°C) | 0.5 | 0.1 | 2.2 | 9.3 | 14.9 | 19.8 | 22.0 | 21.0 | 18.5 | 12.3 | 5.0 | 3.8 |
| Average night temperature (°C) | -1.8 | -3.4 | -1.3 | 4.2 | 9.3 | 14.3 | 17.6 | 16.8 | 14.5 | 9.2 | 1.7 | 1.6 |
| Absolute minimum temperature (°C) | -13.4 | -13.2 | -9.2 | -5.2 | 1.7 | 9.1 | 13.2 | 10.6 | 8.2 | -0.2 | -8.5 | -2.8 |
| 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 | 15.2 | 14.9 | 13.9 | 12.5 | 11.1 | 9.8 | 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) | 2.5 | 6.5 | 6.4 | 8.9 | 10.4 | 11.7 | 11.8 | 10.3 | 9.0 | 5.7 | 6.0 | 3.3 |
| Precipitation (mm) | 76 | 106 | 115 | 85 | 48 | 38 | 97 | 192 | 74 | 162 | 49 | 67 |
| Sunny days | 8 | 13 | 9 | 13 | 20 | 17 | 8 | 14 | 17 | 8 | 18 | 12 |
| Rainy days | 13 | 10 | 15 | 16 | 11 | 13 | 23 | 17 | 13 | 22 | 10 | 18 |
| Snow days | 10 | 5 | 7 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 1 |
The best time to visit Hartford during the most sunny months:
The largest precipitation sum in Hartford is at