All-time weather records — Challis, ID

Record high
102.9°F
July 12, 2002
Record low
-31.9°F
January 15, 2017
Wettest day
1.09 in
September 9, 2010

Climate change signal in Challis

51.9%

of Challis's all-time daily heat records were set in the last decade (190 of 366 records since 2015).

34.4%

of all-time daily cold records were set in the last decade (126 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 #
1990s
13
20
2000s
131
145
2010s
102
146
2020s
120
55

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 1999, the latest in 2026. Period of observation: 1998-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 73.0°F — Jan 14, 2000 -31.9°F — Jan 15, 2017 0.54 in — Jan 11, 2000
February 61.0°F — Feb 6, 2015 -17.9°F — Feb 12, 2025 0.37 in — Feb 6, 2024
March 75.0°F — Mar 19, 2026 -2.0°F — Mar 2, 2002 0.71 in — Mar 17, 2012
April 82.9°F — Apr 22, 2012 11.1°F — Apr 1, 2008 0.65 in — Apr 20, 2001
May 96.1°F — May 28, 2003 19.9°F — May 8, 2002 0.97 in — May 3, 2022
June 100.0°F — Jun 28, 2015 29.1°F — Jun 7, 2012 0.95 in — Jun 17, 2020
July 102.9°F — Jul 12, 2002 36.0°F — Jul 5, 1999 0.66 in — Jul 12, 2011
August 102.0°F — Aug 10, 2018 33.1°F — Aug 31, 2006 1.04 in — Aug 20, 2023
September 99.0°F — Sep 3, 2022 19.0°F — Sep 28, 1999 1.09 in — Sep 9, 2010
October 84.0°F — Oct 3, 2010 -4.0°F — Oct 31, 2002 1.08 in — Oct 28, 2004
November 72.0°F — Nov 7, 2006 -11.7°F — Nov 16, 2014 0.84 in — Nov 21, 2006
December 63.0°F — Dec 2, 2021 -22.9°F — Dec 18, 2016 0.47 in — Dec 2, 2012

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