New Haven, CT All-Time Weather Extremes
The most extreme temperature, precipitation, and snowfall ever recorded in New Haven, from NOAA daily weather observations.
| Temperature | ||
|---|---|---|
| Record High | 100.9°F (38°C) | July 22, 2011 |
| Record Low | -5.8°F (-21°C) | February 14, 2016 |
| Lowest High | 10.9°F (-12°C) | January 23, 1976 |
| Highest Low | 78.9°F (26°C) | August 7, 2022 and August 8, 2022 |
| Highest Mean | 88.4°F (31°C) | July 22, 2011 |
| Lowest Mean | 3.2°F (-16°C) | February 14, 2016 |
| Precipitation | ||
| Max in One Calendar Day | 4.59" (116.6 mm) | July 19, 1971 |
| Max in One Month | 14.61" (371.1 mm) | October 2005 |
| Least in One Month | 0.25" (6.4 mm) | January 1970 |
| Max in One Year | 52.35" (1329.6 mm) | 2011 |
| Least in One Year | 22.37" (568.1 mm) | 2015 |
| Snowfall | ||
| Max in One Calendar Day | 6.5" (16.5 cm) | February 12, 1975 and February 5, 1977 |
| Max in One Month | 15.5" (39.4 cm) | January 1976 |
| Max in One Season | 35.0" (89.0 cm) | 1975-76 |
| Max in One Year | 33.7" (85.6 cm) | 1976 |
| Earliest Snow | 0.3" (0.8 cm) | November 15, 1972 |
| Earliest Measurable Snow | 0.3" (0.8 cm) | November 15, 1972 |
| Latest Snow | 0.2" (0.5 cm) | April 10, 1974 |
| Latest Measurable Snow | 0.2" (0.5 cm) | April 10, 1974 |
| Period of Record | ||
| Temperature | January 1, 1970 – July 31, 2026 | |
| Precipitation | January 1, 1970 – July 17, 2026 | |
| Snowfall | January 1, 1970 – October 31, 1977 | |
Note: Records compiled from NOAA GHCN-Daily observations at NEW HAVEN TWEED AP (4 mi from New Haven, CT). Quality-flagged readings are excluded. Monthly and annual totals require substantially complete reporting for “least” records.
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Frequently Asked Questions
What is the hottest temperature ever recorded in New Haven, CT?
The all-time record high in New Haven, CT is 100.9°F (38°C), set on July 22, 2011.
What is the coldest temperature ever recorded in New Haven, CT?
The all-time record low in New Haven, CT is -5.8°F (-21°C), set on February 14, 2016.
What is the most rain New Haven, CT has ever had in one day?
The most precipitation recorded in one calendar day near New Haven, CT is 4.59 inches, on July 19, 1971.
What is the biggest snowfall ever recorded in New Haven, CT?
The most snow recorded in one calendar day near New Haven, CT is 6.5 inches, on February 12, 1975 and February 5, 1977.
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