All-time weather records — West Yellowstone, MT

Record high
97.2°F
August 14, 2003
Record low
-49.0°F
December 22, 2022
Wettest day
2.00 in
June 12, 2022

Climate change signal in West Yellowstone

46.4%

of West Yellowstone's all-time daily heat records were set in the last decade (170 of 366 records since 2015).

32.2%

of all-time daily cold records were set in the last decade (118 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
15
25
2000s
120
159
2010s
135
117
2020s
96
65

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 1998, the latest in 2026. Period of observation: 1966-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 49.6°F — Jan 30, 2024 -45.2°F — Jan 30, 2023 1.00 in — Jan 19, 2018
February 53.8°F — Feb 14, 2015 -47.7°F — Feb 6, 2014 1.10 in — Feb 25, 2019
March 66.4°F — Mar 27, 2022 -34.1°F — Mar 10, 2022 0.90 in — Mar 16, 2012
April 77.4°F — Apr 23, 2012 -15.9°F — Apr 13, 2022 1.30 in — Apr 16, 2026
May 84.9°F — May 28, 2003 7.2°F — May 10, 2022 1.50 in — May 15, 2001
June 94.3°F — Jun 27, 2015 20.1°F — Jun 19, 2024 2.00 in — Jun 12, 2022
July 96.8°F — Jul 13, 2002 25.2°F — Jul 12, 2008 1.30 in — Jul 10, 2005
August 97.2°F — Aug 14, 2003 21.7°F — Aug 31, 2005 2.00 in — Aug 2, 2022
September 92.5°F — Sep 3, 2022 5.0°F — Sep 28, 1999 1.00 in — Sep 27, 2014
October 96.4°F — Oct 2, 2003 -22.7°F — Oct 26, 2020 1.60 in — Oct 22, 2022
November 65.5°F — Nov 7, 1999 -27.9°F — Nov 19, 2022 1.10 in — Nov 3, 2015
December 51.8°F — Dec 12, 2014 -49.0°F — Dec 22, 2022 1.20 in — Dec 22, 2025

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