Summer temperatures · Connecticut
How hot does Hartford get in summer?
In a typical summer, June to August, Hartford averages highs around 83°F and lows around 61°F.
About 20 days a year reach 90°F or hotter, and a day at 100°F comes along less than once a year. About 86 days a year get to 80°F or warmer. That makes it the 47th coolest summer of the 129 US cities we track.
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The hottest high in the forecast for the next 48 hours is about 45°F.
Hartford averages about 20 days a year at 90°F or hotter, which is more than people expect from New England and more than Hartford would like.
Live 48-hour forecast from OpenWeatherMap, refreshed about every half hour. Alerts from the National Weather Service.
Summer at a glance
| Average summer high | 83°F |
|---|---|
| Average summer low | 61°F |
| Days a year at 80°F or warmer | 86 |
| Days a year at 90°F or hotter | 20 |
| Days a year at 100°F or hotter | fewer than one |
| Average winter high, for comparison | 38°F |
Summer here is June to August. Counts are averages a year.
Cities with about the same summer
- Minneapolis, Minnesota: highs around 81°F, lows around 63°F
- Providence, Rhode Island: highs around 81°F, lows around 63°F
- Rockford, Illinois: highs around 82°F, lows around 62°F
More about the weather here
Source: NOAA U.S. Climate Normals, 1991 to 2020, station USW00014740.