United States
Weather in Hartford through the year
The average of the weather stations Norfolk (50 km), Kingston (100 km) and Blue Hill Coop (139 km); nearer ones count more.
| Month | Average high | Coolest to warmest day |
|---|---|---|
| January | 0.3 °C | -0.3 °C – 1.2 °C |
| February | 1.5 °C | 0.1 °C – 3.3 °C |
| March | 6.3 °C | 3.5 °C – 9.2 °C |
| April | 13.0 °C | 9.5 °C – 15.9 °C |
| May | 19.0 °C | 16.1 °C – 21.7 °C |
| June | 23.8 °C | 21.8 °C – 25.9 °C |
| July | 26.6 °C | 26.1 °C – 26.9 °C |
| August | 25.5 °C | 24.1 °C – 26.5 °C |
| September | 21.5 °C | 18.6 °C – 24.0 °C |
| October | 15.4 °C | 12.4 °C – 18.4 °C |
| November | 8.5 °C | 5.4 °C – 12.2 °C |
| December | 2.7 °C | 1.4 °C – 5.1 °C |