All-time weather records — Rock Springs, WY

Record high
98.1°F
July 17, 2023
Record low
-33.0°F
January 6, 2017
Wettest day
1.84 in
May 7, 2016

Climate change signal in Rock Springs

53.6%

of Rock Springs's all-time daily heat records were set in the last decade (196 of 366 records since 2015).

44%

of all-time daily cold records were set in the last decade (161 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 #
2000s
101
121
2010s
142
165
2020s
123
80

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 2003, the latest in 2026. Period of observation: 2003-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 61.0°F — Jan 26, 2015 -33.0°F — Jan 6, 2017 0.47 in — Jan 26, 2009
February 60.1°F — Feb 1, 2003 -24.0°F — Feb 2, 2011 0.77 in — Feb 23, 2017
March 80.1°F — Mar 25, 2026 -11.9°F — Mar 10, 2022 0.79 in — Mar 3, 2026
April 81.0°F — Apr 23, 2012 3.9°F — Apr 7, 2023 1.56 in — Apr 26, 2016
May 88.0°F — May 28, 2003 18.0°F — May 3, 2013 1.84 in — May 7, 2016
June 95.0°F — Jun 15, 2021 19.9°F — Jun 19, 2009 0.98 in — Jun 24, 2003
July 98.1°F — Jul 17, 2023 39.0°F — Jul 1, 2020 1.60 in — Jul 7, 2015
August 95.0°F — Aug 3, 2020 34.0°F — Aug 31, 2005 0.73 in — Aug 18, 2005
September 93.9°F — Sep 7, 2022 24.1°F — Sep 8, 2020 1.35 in — Sep 28, 2014
October 84.9°F — Oct 1, 2010 -7.1°F — Oct 30, 2019 1.10 in — Oct 4, 2018
November 70.0°F — Nov 6, 2010 -9.9°F — Nov 13, 2014 0.83 in — Nov 1, 2011
December 61.0°F — Dec 2, 2021 -26.0°F — Dec 31, 2014 1.00 in — Dec 4, 2011

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