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 | -7.9°F (-22°C) | January 19, 1948 |
| Lowest High | 5°F (-15°C) | January 15, 1957 |
| 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 | -0.5°F (-18°C) | January 15, 1957 |
| Precipitation | ||
| Max in One Calendar Day | 5.24" (133.1 mm) | June 19, 1972 |
| Max in One Month | 14.61" (371.1 mm) | October 2005 |
| Least in One Month | 0.12" (3.1 mm) | June 1949 |
| Max in One Year | 57.25" (1454.2 mm) | 1972 |
| Least in One Year | 22.44" (569.9 mm) | 2015 |
| Snowfall | ||
| Max in One Calendar Day | 16.1" (40.9 cm) | February 16, 1958 |
| Max in One Month | 28.1" (71.5 cm) | January 1948 |
| Max in One Season | 60.5" (153.6 cm) | 1966-67 |
| Max in One Year | 72.6" (184.4 cm) | 1948 |
| Earliest Snow | 0.3" (0.8 cm) | October 19, 1972 |
| Earliest Measurable Snow | 0.3" (0.8 cm) | October 19, 1972 |
| Latest Snow | 4.8" (12.2 cm) | April 14, 1950 |
| Latest Measurable Snow | 4.8" (12.2 cm) | April 14, 1950 |
| Period of Record | ||
| Temperature | January 1, 1948 – February 5, 2025 | |
| Precipitation | January 1, 1948 – February 5, 2025 | |
| Snowfall | January 1, 1948 – 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 -7.9°F (-22°C), set on January 19, 1948.
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 5.24 inches, on June 19, 1972.
What is the biggest snowfall ever recorded in New Haven, CT?
The most snow recorded in one calendar day near New Haven, CT is 16.1 inches, on February 16, 1958.
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