Connecticut weather in May: Statewide normals and every place, NOAA 1991-2020
In May, Connecticut's statewide normal high is 69°F and normal low 47°F; normal highs run from 65°F in Groton to 72°F in Stamford (NOAA 1991-2020 normals).
- Statewide normal high
- 69°FMay, 1991-2020
- Statewide normal low
- 47°FMay, 1991-2020
- Statewide normal precipitation
- 3.77 inMay
- Warmest place
- 72°Fnormal high, Stamford
- Coolest place
- 65°Fnormal high, Groton
Where is Connecticut warmest and wettest in May?
Stamford has the warmest May afternoons (72°F) and Groton the coolest (65°F). Norfolk gets the most precipitation (4.13 in) and Groton the least (3.31 in).
Statewide, May averaged 57.8°F in 2021, 60.7°F in 2022, 56.9°F in 2023, 60.9°F in 2024, 59.0°F in 2025, 57.7°F in 2026, against a 1991-2020 normal of 58.0°F.
| Place | High | Low | Precip. | Snow |
|---|---|---|---|---|
| Bridgeport | 68°F | 52°F | 3.58 | 0.0 |
| Stamford | 72°F | 50°F | 4.12 | 0.0 |
| New Haven | 68°F | 49°F | 3.54 | – |
| Hartford | 72°F | 48°F | 3.79 | 0.0 |
| Danbury | 69°F | 46°F | 3.78 | – |
| Meriden | 70°F | 48°F | 3.48 | – |
| Norwich | 70°F | 49°F | 3.64 | 0.0 |
| Ansonia | 69°F | 47°F | 4.04 | – |
| Willimantic | 70°F | 47°F | 3.40 | – |
| Storrs | 68°F | 48°F | 3.73 | 0.0 |
| Groton | 65°F | 49°F | 3.31 | – |
| Norfolk | 65°F | 45°F | 4.13 | 0.0 |
| Falls Village | 72°F | 44°F | 3.87 | – |
| Bakersville | 69°F | 44°F | 4.14 | 0.0 |
| Barkhamsted | 70°F | 45°F | 3.96 | 0.0 |
| Burlington | 70°F | 47°F | 4.19 | 0.0 |
| Hampton | 68°F | 45°F | 3.74 | – |
| Mount Carmel | 71°F | 48°F | 3.68 | – |
| Staffordville | 68°F | 43°F | 3.78 | – |
| West Thompson Lake | 69°F | 45°F | 3.43 | 0.0 |
Source: NOAA NCEI nClimDiv statewide normals; NOAA NCEI 1991-2020 monthly normals for each station.