Average annual temperature is 9.6 °C
Absolute maximum temperature: 35.4 °C
Absolute minimum temperature: -25.4 °C
Number of sunny days: 185 days
Number of rainy days: 149 days
Number of snow days: 31 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) | 6.9 | 10.6 | 16.9 | 25.5 | 30.2 | 31.3 | 32.5 | 35.4 | 33.2 | 28.2 | 17.8 | 12.3 |
| Average daytime temperature (°C) | 0.7 | 2.3 | 5.4 | 14.0 | 21.2 | 26.2 | 27.8 | 26.5 | 23.3 | 15.3 | 7.5 | 4.8 |
| Average temperature (°C) | -2.8 | -2.9 | 0.3 | 8.2 | 14.5 | 19.9 | 22.1 | 21.1 | 18.4 | 11.3 | 3.2 | 1.5 |
| Average night temperature (°C) | -5.3 | -7.3 | -3.8 | 3.2 | 9.1 | 14.4 | 17.2 | 16.9 | 15.0 | 7.9 | 0.0 | -1.0 |
| Absolute minimum temperature (°C) | -25.4 | -23.9 | -13.1 | -3.1 | -0.4 | 6.4 | 11.9 | 10.5 | 9.2 | -3.0 | -12.6 | -8.4 |
| 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) | 9.4 | 10.5 | 11.9 | 13.4 | 14.7 | 15.3 | 15.0 | 13.9 | 12.5 | 11.0 | 9.7 | 9.0 |
| 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 | 8.0 |
| Sunshine mean duration (h) | 3.5 | 6.8 | 6.4 | 8.0 | 10.6 | 12.3 | 12.6 | 11.3 | 8.6 | 6.5 | 6.6 | 3.9 |
| Precipitation (mm) | 44 | 84 | 83 | 93 | 47 | 53 | 79 | 123 | 84 | 107 | 36 | 50 |
| Sunny days | 11 | 15 | 10 | 16 | 19 | 22 | 13 | 16 | 14 | 12 | 22 | 15 |
| Rainy days | 9 | 10 | 13 | 14 | 12 | 8 | 18 | 15 | 16 | 17 | 6 | 11 |
| Snow days | 11 | 3 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 5 |
The best time to visit Hartford during the most sunny months:
Months with the longest average daylight duration in Hartford:
The largest precipitation sum in Hartford is at