All-time weather records — Byron, WY

Record high
111.0°F
June 29, 1919
Record low
-47.9°F
February 5, 1899
Wettest day
1.78 in
May 9, 1926

Climate change signal in Byron

6.8%

of Byron's all-time daily heat records were set in the last decade (25 of 366 records since 2015).

6.3%

of all-time daily cold records were set in the last decade (23 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
9
38
1900s
11
16
1910s
46
67
1920s
25
45
1930s
51
29
1940s
17
21
1950s
31
21
1960s
39
16
1970s
28
36
1980s
47
25
1990s
18
15
2000s
12
7
2010s
14
20
2020s
18
10

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 1897, the latest in 2026. Period of observation: 1897-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 63.0°F — Jan 13, 1953 -42.0°F — Jan 1, 1924 1.10 in — Jan 25, 1899
February 71.1°F — Feb 22, 1982 -47.9°F — Feb 5, 1899 0.61 in — Feb 17, 1928
March 79.0°F — Mar 28, 1925 -27.9°F — Mar 4, 2019 1.05 in — Mar 21, 1946
April 90.0°F — Apr 30, 1939 -9.9°F — Apr 5, 1936 1.30 in — Apr 28, 1978
May 99.0°F — May 10, 1898 18.0°F — May 1, 1954 1.78 in — May 9, 1926
June 111.0°F — Jun 29, 1919 28.0°F — Jun 11, 2012 1.75 in — Jun 25, 1969
July 107.1°F — Jul 11, 1939 33.1°F — Jul 17, 1897 1.35 in — Jul 10, 1951
August 105.1°F — Aug 6, 1979 28.0°F — Aug 26, 1910 1.75 in — Aug 2, 1976
September 99.0°F — Sep 2, 1983 14.0°F — Sep 25, 1926 1.32 in — Sep 2, 2008
October 89.1°F — Oct 1, 1938 -8.0°F — Oct 30, 1991 1.40 in — Oct 8, 1997
November 75.0°F — Nov 25, 1937 -27.0°F — Nov 16, 1959 0.52 in — Nov 28, 1928
December 66.0°F — Dec 2, 1995 -43.1°F — Dec 13, 1919 0.64 in — Dec 4, 1971

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