All-time weather records — Lyman, UT

Record high
109.9°F
July 20, 1903
Record low
-36.9°F
February 8, 1929
Wettest day
3.07 in
December 23, 2015

Climate change signal in Lyman

17.2%

of Lyman's all-time daily heat records were set in the last decade (63 of 366 records since 2015).

0.8%

of all-time daily cold records were set in the last decade (3 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 #
1890s
34
57
1900s
55
142
1910s
·
1
1920s
38
24
1930s
49
28
1940s
24
23
1950s
28
21
1960s
19
28
1970s
17
20
1980s
19
11
1990s
7
4
2000s
8
3
2010s
19
3
2020s
49
1

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 1893, the latest in 2026. Period of observation: 1893-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 75.9°F — Jan 18, 1896 -33.0°F — Jan 22, 1937 2.05 in — Jan 27, 2013
February 70.0°F — Feb 24, 1904 -36.9°F — Feb 8, 1929 1.30 in — Feb 10, 1905
March 84.9°F — Mar 26, 2026 -15.0°F — Mar 1, 1903 2.00 in — Mar 16, 1906
April 81.0°F — Apr 12, 2025 -5.1°F — Apr 10, 1894 2.00 in — Apr 6, 1906
May 91.9°F — May 28, 1896 10.0°F — May 3, 1953 1.30 in — May 10, 1922
June 98.1°F — Jun 27, 1903 19.0°F — Jun 14, 1901 1.55 in — Jun 25, 1937
July 109.9°F — Jul 20, 1903 19.0°F — Jul 2, 1902 1.59 in — Jul 14, 1896
August 100.0°F — Aug 4, 1903 21.0°F — Aug 13, 1993 1.55 in — Aug 26, 1988
September 93.0°F — Sep 7, 2020 10.0°F — Sep 28, 1900 1.25 in — Sep 6, 1939
October 86.0°F — Oct 18, 2025 -9.0°F — Oct 30, 1971 1.30 in — Oct 2, 1933
November 75.9°F — Nov 24, 1899 -18.0°F — Nov 17, 1964 1.00 in — Nov 30, 1933
December 66.9°F — Dec 12, 1921 -27.9°F — Dec 23, 1924 3.07 in — Dec 23, 2015

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