All-time weather records — Hartville, WY

Record high
105.1°F
July 5, 2016
Record low
-29.9°F
January 19, 1963
Wettest day
3.50 in
June 12, 1970

Climate change signal in Hartville

62%

of Hartville's all-time daily heat records were set in the last decade (227 of 366 records since 2015).

54.6%

of all-time daily cold records were set in the last decade (200 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
37
55
1970s
48
61
1980s
·
1
1990s
·
·
2010s
130
159
2020s
151
90

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 1962, the latest in 2026. Period of observation: 1962-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 66.9°F — Jan 16, 1974 -29.9°F — Jan 19, 1963 0.46 in — Jan 9, 2023
February 70.0°F — Feb 5, 2015 -20.9°F — Feb 9, 2017 0.75 in — Feb 4, 2015
March 82.9°F — Mar 20, 2017 -13.0°F — Mar 4, 2019 1.42 in — Mar 6, 1990
April 86.0°F — Apr 30, 2020 6.1°F — Apr 1, 2013 2.21 in — Apr 26, 2016
May 93.9°F — May 14, 2013 25.0°F — May 6, 2013 2.50 in — May 16, 1991
June 102.0°F — Jun 15, 2021 30.0°F — Jun 2, 2016 3.50 in — Jun 12, 1970
July 105.1°F — Jul 5, 2016 46.0°F — Jul 1, 2018 2.53 in — Jul 23, 1983
August 104.0°F — Aug 5, 1979 37.9°F — Aug 25, 2015 1.34 in — Aug 31, 1963
September 102.0°F — Sep 5, 2020 30.0°F — Sep 9, 1962 1.64 in — Sep 1, 1963
October 90.0°F — Oct 2, 2012 -2.9°F — Oct 30, 2019 1.17 in — Oct 7, 1970
November 79.0°F — Nov 3, 2020 -14.1°F — Nov 13, 2014 0.71 in — Nov 8, 1983
December 71.1°F — Dec 2, 2021 -24.0°F — Dec 19, 2016 0.57 in — Dec 27, 1987

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