Hartford, CT
Climate overview — based on NOAA 1991-2020 normals from HARTFORD BRAINARD FLD, CT US.
Year-round temperatures (°F)
Climate summary
Hartford has an annual average temperature of 52°F with about 42.8 inches of precipitation per year. The warmest month is July (average high 84.6°F), and the coldest is January (average low 20.3°F). October is typically the wettest month (4.20 in) and February the driest (2.57 in).
Best time to visit Hartford
Full guide →Climate change signal
All-time records →59 of 366 (16.1%) of Hartford's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1920s | 22 | |
| 1930s | 31 | |
| 1940s | 38 | |
| 1950s | 32 | |
| 1960s | 24 | |
| 1970s | 32 | |
| 1980s | 31 | |
| 1990s | 42 | |
| 2000s | 35 | |
| 2010s | 43 | |
| 2020s | 36 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 36.8°F | 20.3°F | 28.6°F | 2.94 in | — | 10 |
| February | 39.5°F | 22.1°F | 30.8°F | 2.57 in | — | 9 |
| March | 47.6°F | 29.6°F | 38.6°F | 3.51 in | — | 11 |
| April | 60.1°F | 40.0°F | 50.0°F | 3.79 in | — | 11 |
| May | 70.9°F | 50.1°F | 60.5°F | 3.43 in | — | 13 |
| June | 79.6°F | 59.8°F | 69.7°F | 3.88 in | — | 11 |
| July | 84.6°F | 65.7°F | 75.2°F | 3.87 in | — | 11 |
| August | 83.0°F | 64.2°F | 73.6°F | 3.48 in | — | 10 |
| September | 75.6°F | 56.0°F | 65.8°F | 3.97 in | — | 10 |
| October | 63.7°F | 44.3°F | 54.0°F | 4.20 in | — | 11 |
| November | 52.1°F | 34.6°F | 43.3°F | 3.44 in | — | 10 |
| December | 41.7°F | 25.9°F | 33.8°F | 3.75 in | — | 11 |
Climate twins of Hartford
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).