Historical Weather in New Haven, CT
See 55+ years of weather history for any date in New Haven going back to 1970.
Part of Connecticut weather history
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Today in New Haven Weather HistorySee records, averages, and 55+ years of data for today's date
→Monthly Climate Averages
Historical temperature and precipitation averages for New Haven, CT, based on 55+ years of weather data.
Warmest MonthJulyAvg High: 84°F / Low: 65°F
Coldest MonthJanuaryAvg High: 38°F / Low: 22°F
Jan
38°/ 22°
💧 9.0"
❄️ 2.0"
Feb
41°/ 24°
💧 9.2"
❄️ 2.3"
Mar
48°/ 31°
💧 10.4"
❄️ 2.1"
Apr
59°/ 40°
💧 12.0"
❄️ 2.3"
May
70°/ 50°
💧 9.4"
Jun
78°/ 59°
💧 10.3"
Jul
84°/ 65°
💧 10.8"
Aug
83°/ 64°
💧 11.1"
Sep
75°/ 56°
💧 12.5"
Oct
64°/ 45°
💧 12.6"
❄️ 0.9"
Nov
53°/ 36°
💧 10.6"
❄️ 2.0"
Dec
43°/ 27°
💧 9.9"
❄️ 1.7"
Temperatures in Fahrenheit. Precipitation and snowfall in inches.
New Haven Temperature Records
- Record High: The hottest temperature ever recorded in New Haven, CT is 103°F, set on July 15, 1995.
- Record Low: The coldest temperature ever recorded in New Haven, CT is -15°F, set on January 12, 1981.
- Data Coverage: Based on 57 years of data from NOAA weather station: NEW HAVEN TWEED AP.
All-Time Record High
103°F
July 15, 1995
All-Time Record Low
-15°F
January 12, 1981
Monthly Temperature Records in New Haven
| Month | Record High | Record Low |
|---|---|---|
| January | 74°F(2020) | -15°F(1981) |
| February | 73°F(2018) | -13°F(1979) |
| March | 84°F(1990) | -1°F(2003) |
| April | 95°F(2002) | 14°F(1970) |
| May | 97°F(1996) | 28°F(1974) |
| June | 101°F(2025) | 36°F(1972) |
| July | 103°F(1995) | 42°F(1988) |
| August | 102°F(2001) | 39°F(1976) |
| September | 97°F(2015) | 31°F(1974) |
| October | 89°F(2019) | 20°F(1972) |
| November | 82°F(2024) | 6°F(1989) |
| December | 76°F(1998) | -13°F(1980) |
New Haven Snow RecordsSee the top 10 snowiest days ever recorded
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