Average annual temperature is 12.1 °C
Absolute maximum temperature: 33.2 °C
Absolute minimum temperature: -11.9 °C
Number of sunny days: 172 days
Number of rainy days: 181 days
Number of snow days: 12 days
Look at detailed online map of Hartford (historical)
* Weather data for Hartford (historical) 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) | 17.3 | 19.2 | 19.4 | 26.5 | 30.9 | 33.2 | 32.8 | 32.8 | 32.4 | 29.2 | 21.5 | 16.5 |
| Average daytime temperature (°C) | 5.1 | 9.5 | 9.7 | 17.5 | 22.3 | 26.8 | 28.9 | 27.1 | 25.2 | 18.0 | 11.4 | 8.6 |
| Average temperature (°C) | 1.7 | 3.0 | 4.0 | 10.8 | 15.8 | 20.6 | 23.6 | 21.8 | 19.6 | 13.3 | 5.8 | 4.7 |
| Average night temperature (°C) | -1.1 | -1.5 | -0.2 | 5.2 | 9.9 | 14.6 | 18.8 | 16.9 | 14.7 | 9.3 | 1.9 | 2.0 |
| Absolute minimum temperature (°C) | -11.2 | -11.9 | -7.9 | -1.3 | 1.9 | 10.1 | 14.1 | 10.4 | 8.9 | -3.2 | -8.1 | -4.4 |
| 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) | 9.6 | 10.7 | 11.9 | 13.3 | 14.5 | 15.0 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 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) | 2.9 | 7.2 | 7.1 | 9.0 | 10.4 | 10.6 | 12.0 | 10.6 | 9.4 | 6.8 | 7.4 | 4.0 |
| Precipitation (mm) | 108 | 81 | 110 | 62 | 48 | 120 | 86 | 90 | 20 | 60 | 24 | 39 |
| Sunny days | 10 | 16 | 11 | 12 | 18 | 16 | 8 | 15 | 21 | 13 | 20 | 12 |
| Rainy days | 17 | 11 | 15 | 18 | 13 | 14 | 23 | 16 | 9 | 17 | 10 | 18 |
| Snow days | 4 | 1 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
The best time to visit Hartford (historical) during the most sunny months:
The largest precipitation sum in Hartford (historical) is at