All-time weather records — Boonsboro, MD

Record high
100.9°F
July 30, 2011
Record low
-6.0°F
February 20, 2015
Wettest day
4.56 in
October 30, 2012

Climate change signal in Boonsboro

27%

of Boonsboro's all-time daily heat records were set in the last decade (99 of 366 records since 2015).

24%

of all-time daily cold records were set in the last decade (88 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
46
33
2000s
153
178
2010s
133
134
2020s
34
21

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 2022. Period of observation: 1998-2022.

Records by month

Month Hottest day Coldest day Wettest day
January 73.0°F — Jan 30, 2002 -2.9°F — Jan 25, 2004 2.17 in — Jan 31, 2013
February 80.1°F — Feb 26, 2000 -6.0°F — Feb 20, 2015 2.43 in — Feb 17, 2003
March 84.9°F — Mar 9, 2000 -4.0°F — Mar 6, 2015 2.91 in — Mar 22, 2019
April 93.9°F — Apr 18, 2002 19.0°F — Apr 4, 2013 3.52 in — Apr 17, 2011
May 95.0°F — May 31, 2006 28.9°F — May 1, 2018 3.97 in — May 16, 2014
June 99.0°F — Jun 30, 2012 36.0°F — Jun 1, 2001 3.20 in — Jun 26, 2006
July 100.9°F — Jul 30, 2011 46.0°F — Jul 8, 2000 4.24 in — Jul 22, 2018
August 99.0°F — Aug 1, 1999 46.0°F — Aug 20, 1998 3.13 in — Aug 27, 2012
September 98.1°F — Sep 2, 2010 33.1°F — Sep 20, 2020 3.79 in — Sep 18, 2004
October 93.0°F — Oct 3, 2019 24.1°F — Oct 9, 2001 4.56 in — Oct 30, 2012
November 84.0°F — Nov 4, 2003 12.0°F — Nov 19, 2014 1.91 in — Nov 12, 2020
December 80.1°F — Dec 6, 2001 0.0°F — Dec 23, 2000 2.41 in — Dec 16, 2018

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