All-time weather records — Fountain Hills, AZ

Record high
125.1°F
July 29, 1995
Record low
23.0°F
January 14, 2007
Wettest day
3.02 in
September 24, 2019

Climate change signal in Fountain Hills

11.5%

of Fountain Hills's all-time daily heat records were set in the last decade (42 of 366 records since 2015).

3.3%

of all-time daily cold records were set in the last decade (12 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 #
1970s
3
5
1980s
148
144
1990s
139
163
2000s
24
25
2010s
18
25
2020s
34
4

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 1979, the latest in 2026. Period of observation: 1979-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 82.0°F — Jan 12, 1990 23.0°F — Jan 14, 2007 2.00 in — Jan 27, 2008
February 91.0°F — Feb 26, 1986 25.0°F — Feb 2, 1985 2.01 in — Feb 25, 1987
March 102.9°F — Mar 20, 2026 30.0°F — Mar 4, 1985 2.05 in — Mar 5, 2004
April 107.1°F — Apr 21, 1989 36.0°F — Apr 4, 1983 1.00 in — Apr 5, 2001
May 114.1°F — May 29, 1984 39.0°F — May 30, 1990 0.60 in — May 18, 2015
June 120.9°F — Jun 27, 1990 48.9°F — Jun 7, 1993 0.70 in — Jun 26, 1986
July 125.1°F — Jul 29, 1995 55.0°F — Jul 10, 2015 1.26 in — Jul 28, 1989
August 118.0°F — Aug 2, 1993 57.9°F — Aug 22, 2014 2.15 in — Aug 12, 2021
September 115.0°F — Sep 1, 1995 51.1°F — Sep 24, 1986 3.02 in — Sep 24, 2019
October 109.0°F — Oct 2, 2024 34.0°F — Oct 21, 2006 1.65 in — Oct 28, 1991
November 95.0°F — Nov 1, 1988 28.9°F — Nov 27, 1984 2.24 in — Nov 15, 1993
December 84.0°F — Dec 2, 1995 24.1°F — Dec 23, 1990 2.30 in — Dec 1, 2007

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