Connecticut has warm, humid summers and cold, snowy winters: NOAA's 1991–2020 normals for Hartford Bradley International Airport give highs of 83.3–85.2°F in July and August and 35.3°F in January, with 14.8 inches of snow in February. The coast is milder (Bridgeport's January high is 38.4°F). Choose by activity; we have no verified dataset for crowds, fall color or prices.
Month-by-month climate table
| Month | Normal high | Normal low | Normal precipitation | Normal snowfall | Verified schedule notes |
|---|---|---|---|---|---|
| January | 35.3°F | 18.8°F | 3.28 in | 14.2 in | — |
| February | 38.5°F | 20.7°F | 3.13 in | 14.8 in | — |
| March | 47.3°F | 28.2°F | 3.81 in | 9.4 in | — |
| April | 60.5°F | 38.4°F | 3.88 in | 1.1 in | — |
| May | 71.7°F | 48.4°F | 3.79 in | 0.0 in | — |
| June | 79.9°F | 57.8°F | 4.28 in | 0.0 in | — |
| July | 85.2°F | 63.4°F | 4.17 in | 0.0 in | — |
| August | 83.3°F | 61.7°F | 4.21 in | 0.0 in | — |
| September | 75.7°F | 53.8°F | 4.39 in | 0.0 in | Mystic Seaport early-fall schedule began Sep 8 (daily 10-5) |
| October | 63.5°F | 42.4°F | 4.52 in | 0.7 in | — |
| November | 51.5°F | 33.0°F | 3.51 in | 1.4 in | Mystic Seaport reduced late-fall hours from Nov 2 |
| December | 40.6°F | 24.6°F | 4.08 in | 10.1 in | — |
Source: NOAA NCEI U.S. Climate Normals 1991–2020, Hartford Bradley International Airport (USW00014740), retrieved October 19, 2026. Normals are 30-year averages; actual weather varies. Schedule notes are from Mystic Seaport Museum.
Coastal contrasts
| Station | January high / low | July high / low | Snowfall |
|---|---|---|---|
| Hartford Bradley | 35.3°F / 18.8°F | 85.2°F / 63.4°F | up to 14.8 in a month |
| Bridgeport Sikorsky | 38.4°F / 24.4°F | 83.4°F / 67.9°F | up to 10.7 in a month |
| New Haven Tweed | 38.1°F / 23.0°F | 82.1°F / 65.7°F | not reported |
How to choose your month
- Warmest: June–August (Hartford highs 79.9–85.2°F).
- Coldest and snowiest: December–February (Hartford highs 35.3–40.6°F; 10.1–14.8 inches of snow).
- Wettest: October (4.52 inches), September (4.39) and June (4.28).
Limits of this guide
Normals describe typical conditions, not forecasts, and we have no verified dataset for fall foliage, crowds or prices by month, so this page makes no such claims. Use the National Weather Service for forecasts.