All-time weather records — Swan Valley, ID

Record high
102.9°F
September 4, 2022
Record low
-43.1°F
January 19, 1963
Wettest day
2.30 in
June 10, 2004

Climate change signal in Swan Valley

33.3%

of Swan Valley's all-time daily heat records were set in the last decade (122 of 366 records since 2015).

5.7%

of all-time daily cold records were set in the last decade (21 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 #
1960s
28
90
1970s
26
116
1980s
60
68
1990s
58
39
2000s
54
17
2010s
39
24
2020s
101
12

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 1960, the latest in 2026. Period of observation: 1960-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 55.0°F — Jan 16, 1974 -43.1°F — Jan 19, 1963 1.40 in — Jan 23, 1982
February 60.1°F — Feb 5, 1963 -36.0°F — Feb 5, 1982 0.85 in — Feb 20, 1968
March 81.0°F — Mar 21, 2026 -25.1°F — Mar 2, 1971 1.86 in — Mar 2, 2024
April 82.9°F — Apr 29, 1992 -2.9°F — Apr 1, 1975 0.90 in — Apr 27, 2014
May 93.0°F — May 20, 2005 12.0°F — May 1, 1990 1.82 in — May 7, 1988
June 100.9°F — Jun 25, 1988 19.9°F — Jun 1, 1979 2.30 in — Jun 10, 2004
July 100.9°F — Jul 20, 1989 26.1°F — Jul 8, 1981 1.83 in — Jul 23, 1985
August 102.0°F — Aug 14, 2025 23.0°F — Aug 31, 1962 1.34 in — Aug 7, 2022
September 102.9°F — Sep 4, 2022 8.1°F — Sep 19, 1983 1.87 in — Sep 22, 2006
October 89.1°F — Oct 5, 2024 -5.1°F — Oct 30, 2019 1.66 in — Oct 16, 2012
November 72.0°F — Nov 4, 2020 -20.9°F — Nov 30, 1975 1.50 in — Nov 27, 2012
December 57.9°F — Dec 1, 1995 -43.1°F — Dec 22, 1990 1.20 in — Dec 23, 1964

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