All-time weather records — Idaho Falls, ID

Record high
104.0°F
July 12, 2002
Record low
-34.1°F
February 1, 1985
Wettest day
1.97 in
May 23, 2023

Climate change signal in Idaho Falls

12.3%

of Idaho Falls's all-time daily heat records were set in the last decade (45 of 366 records since 2015).

6%

of all-time daily cold records were set in the last decade (22 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 #
1950s
29
78
1960s
63
67
1970s
31
69
1980s
50
65
1990s
67
35
2000s
61
24
2010s
36
18
2020s
29
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 1952, the latest in 2026. Period of observation: 1952-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 57.0°F — Jan 31, 2003 -29.0°F — Jan 12, 1963 1.60 in — Jan 1, 1986
February 63.0°F — Feb 6, 1963 -34.1°F — Feb 1, 1985 1.35 in — Feb 15, 1986
March 78.1°F — Mar 20, 2026 -15.0°F — Mar 1, 1960 1.49 in — Mar 11, 1995
April 84.9°F — Apr 23, 2012 9.0°F — Apr 2, 1953 1.30 in — Apr 4, 1998
May 95.0°F — May 28, 2003 19.9°F — May 1, 1967 1.97 in — May 23, 2023
June 100.0°F — Jun 25, 2002 28.0°F — Jun 7, 1995 1.68 in — Jun 1, 2005
July 104.0°F — Jul 12, 2002 34.0°F — Jul 8, 1981 1.14 in — Jul 15, 1954
August 100.0°F — Aug 4, 1961 30.9°F — Aug 26, 1992 1.45 in — Aug 29, 1971
September 98.1°F — Sep 3, 2022 18.0°F — Sep 29, 1985 1.73 in — Sep 12, 1998
October 87.1°F — Oct 1, 1992 1.9°F — Oct 30, 2019 1.36 in — Oct 6, 2007
November 73.0°F — Nov 1, 1965 -11.9°F — Nov 26, 1993 0.90 in — Nov 30, 1970
December 60.1°F — Dec 1, 1995 -29.0°F — Dec 10, 1972 1.10 in — Dec 7, 1997

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