All-time weather records — Williamsville, NY

Record high
99.0°F
August 27, 1948
Record low
-20.0°F
February 2, 1961
Wettest day
5.01 in
June 22, 1987

Climate change signal in Williamsville

14.8%

of Williamsville's all-time daily heat records were set in the last decade (54 of 366 records since 2015).

4.9%

of all-time daily cold records were set in the last decade (18 of 366 records since 2015).

If records were spread evenly across the station's history, you'd expect roughly 5% per decade. Decade-by-decade, here's where each record-breaking day was set:

Decade Heat records set # Cold records set #
1930s
7
15
1940s
67
72
1950s
62
33
1960s
32
94
1970s
23
49
1980s
37
41
1990s
34
26
2000s
31
12
2010s
45
19
2020s
28
5

Records are the all-time daily extremes that are still standing — each daily record can only be held by one year. The station's earliest hot record was set in 1938, the latest in 2025. Period of observation: 1938-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 72.0°F — Jan 25, 1950 -16.1°F — Jan 17, 1982 1.83 in — Jan 11, 1982
February 71.1°F — Feb 24, 2017 -20.0°F — Feb 2, 1961 2.08 in — Feb 16, 1954
March 82.0°F — Mar 21, 2012 -7.1°F — Mar 8, 1984 2.05 in — Mar 29, 1954
April 93.9°F — Apr 28, 1990 12.0°F — Apr 3, 1954 1.97 in — Apr 5, 1941
May 93.0°F — May 26, 2020 26.1°F — May 10, 1947 3.41 in — May 19, 1986
June 96.1°F — Jun 25, 1988 0.0°F — Jun 3, 1946 5.01 in — Jun 22, 1987
July 98.1°F — Jul 9, 2020 43.0°F — Jul 11, 1945 3.38 in — Jul 29, 1963
August 99.0°F — Aug 27, 1948 37.9°F — Aug 29, 1982 3.88 in — Aug 7, 1963
September 98.1°F — Sep 3, 1953 30.9°F — Sep 29, 1942 4.89 in — Sep 14, 1979
October 87.1°F — Oct 4, 1951 19.9°F — Oct 29, 1965 3.00 in — Oct 1, 1945
November 80.1°F — Nov 3, 1961 7.0°F — Nov 30, 1958 2.31 in — Nov 20, 2000
December 73.9°F — Dec 3, 1982 -9.9°F — Dec 25, 1980 1.98 in — Dec 23, 2022

Click a month to see every daily record for that month in Williamsville.