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Has the climate in East Hampton changed?

East Hampton has warmed about 2.5°F since 1971.

About 0.5°F per decade, measured from East Hampton's official daily weather records, 1971–2025. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? East Hampton's warming is broadly in line with other cities in United States — neither unusually fast nor unusually slow.

What has actually changed

Each card compares the 1970s (the first ten years of the record) with recent years (the last ten) — the same span the headline and the chart use.

Freezing nights
23 fewer nights
1970s
74 / yr
Recent
51 / yr
Milder winters — fewer frosts
Average temperature
+1.9°F
1970s
60.0°F
Recent
61.9°F
A steady upward drift
Hot days above 90°F
11 fewer days
1970s
56 / yr
Recent
45 / yr
Slightly fewer hot days
Rainy days
about the same
1970s
109 / yr
Recent
108 / yr
Rainfall pattern about the same

East Hampton's temperature, year by year

Average temperature for each year from 1971 to 2025.

56°58°60°62°64°66°1971: 60.1°F1972: 59.8°F1973: 61.6°F1974: 61.3°F1975: 60.8°F1976: 60.7°F1977: 61.3°F1978: 60.6°F1979: 59.5°F1980: 60.1°F1981: 58.6°F1982: 58.9°F1983: 59.7°F1984: 57.1°F1985: 59.5°F1986: 63.0°F1987: 59.9°F1988: 57.3°F1989: 59.1°F1990: 61.8°F1991: 64.6°F1992: 60.2°F1993: 60.6°F1994: 60.5°F1995: 60.7°F1996: 60.0°F1997: 60.7°F1998: 63.3°F1999: 61.2°F2000: 60.3°F2001: 61.7°F2002: 62.7°F2003: 60.7°F2004: 61.8°F2005: 62.8°F2006: 62.7°F2007: 62.8°F2008: 62.4°F2009: 61.4°F2010: 62.2°F2011: 63.2°F2012: 63.1°F2013: 61.2°F2014: 61.2°F2015: 61.9°F2016: 62.5°F2017: 61.2°F2018: 60.8°F2019: 62.9°F2020: 59.9°F2021: 63.8°F2022: 62.6°F2023: 61.4°F2024: 62.7°F2025: 60.2°Flong-term trend1971198019902000201020202025
a warmer-than-average year a cooler-than-average year

Each bar is one year. Most recent years sit above the older ones. Some recent years still came in cool — warming is a slope, not a straight climb.

In day-to-day terms, that long-term shift shows up as about 15 fewer freezing nights a year and about 6 fewer days above 90°F compared with the 1970s.

When in the year the change shows up

How much warmer each month is now than in the 1970s. Useful if you garden or care about a particular season — otherwise the headline above already has the answer.

-0.5°0.0°+0.5°+1.0°+1.5°January: +1.3°F+1.3JFebruary: +1.3°F+1.3FMarch: -0.1°F-0.1MApril: +1.0°F+1.0AMay: +0.7°F+0.7MJune: +0.7°F+0.7JJuly: +0.5°F+0.5JAugust: +0.4°F+0.4ASeptember: +0.3°F+0.3SOctober: +0.9°F+0.9ONovember: -0.2°F-0.2NDecember: +0.6°F+0.6D

January has warmed the most — about 1.3°F. The warming runs across the whole year, not just one season.

Methodology & sources

Temperature — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Hopewell (NOAA GHCN station USC00444101), about 89 km from the city centre.

How we build these numbers →