All-time weather records — Jamestown, CO

Record high
117.0°F
June 30, 2006
Record low
-53.9°F
February 11, 1990
Wettest day
3.00 in
April 2, 1986

Climate change signal in Jamestown

13.9%

of Jamestown's all-time daily heat records were set in the last decade (51 of 366 records since 2015).

19.1%

of all-time daily cold records were set in the last decade (70 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 #
1980s
1
2
1990s
46
130
2000s
255
131
2010s
32
58
2020s
32
45

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 1989, the latest in 2026. Period of observation: 1980-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 84.7°F — Jan 22, 2007 -23.8°F — Jan 6, 2017 1.30 in — Jan 30, 2005
February 85.6°F — Feb 21, 2007 -53.9°F — Feb 11, 1990 0.90 in — Feb 9, 2014
March 95.2°F — Mar 30, 2006 -11.6°F — Mar 20, 2010 2.80 in — Mar 18, 2003
April 95.9°F — Apr 15, 2006 -8.7°F — Apr 13, 1997 3.00 in — Apr 2, 1986
May 96.1°F — May 5, 2006 -0.4°F — May 2, 2013 2.40 in — May 12, 1982
June 117.0°F — Jun 30, 2006 16.3°F — Jun 26, 2006 1.80 in — Jun 3, 1981
July 113.5°F — Jul 17, 2006 28.8°F — Jul 18, 1993 2.80 in — Jul 6, 2012
August 113.5°F — Aug 7, 2005 18.7°F — Aug 29, 2005 1.70 in — Aug 4, 1999
September 108.5°F — Sep 13, 2006 7.5°F — Sep 22, 1995 2.30 in — Sep 12, 2013
October 103.1°F — Oct 1, 2005 -11.0°F — Oct 29, 2019 1.50 in — Oct 3, 1984
November 95.2°F — Nov 2, 2006 -15.7°F — Nov 12, 2014 1.00 in — Nov 5, 1988
December 85.1°F — Dec 8, 2005 -24.3°F — Dec 7, 2005 2.00 in — Dec 20, 2006

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