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Get the Hartford CT weather forecast without ads, cookies, or tracking. Open-Meteo data, 10-day forecast, hourly conditions, and radar — all free. click here to hide this
July is the hottest month in Hartford CT, with an average high of 85°F / 30°C; January is the coldest (35°F / 2°C). October is the wettest month, averaging 4.5 in / 115 mm of precipitation.
| Month | High °F / °C | Low °F / °C | Precip in / mm | Wet days |
|---|---|---|---|---|
| Jan | 35 / 2 | 19 / -7 | 3.3 / 83 | 8 |
| Feb | 39 / 4 | 21 / -6 | 3.1 / 79 | 8 |
| Mar | 47 / 9 | 28 / -2 | 3.8 / 97 | 9 |
| Apr | 61 / 16 | 38 / 4 | 3.9 / 98 | 9 |
| May | 72 / 22 | 48 / 9 | 3.8 / 96 | 10 |
| Jun | 80 / 27 | 58 / 14 | 4.3 / 109 | 9 |
| Jul | 85 / 30 | 64 / 18 | 4.2 / 106 | 9 |
| Aug | 83 / 29 | 62 / 17 | 4.2 / 107 | 8 |
| Sep | 76 / 24 | 54 / 12 | 4.4 / 111 | 7 |
| Oct | 64 / 18 | 42 / 6 | 4.5 / 115 | 8 |
| Nov | 52 / 11 | 33 / 1 | 3.5 / 89 | 8 |
| Dec | 41 / 5 | 25 / -4 | 4.1 / 104 | 9 |
Extremes since 1942: highest 103°F / 39°C (July 22, 2011), lowest -26°F / -32°C (January 22, 1961).
Daylight lasts about 15.0 hours in June and 9.0 hours in December.
Data: Meteostat — Bradley International Airport, 1991–2020 averages.
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