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Built 2026-10-19 (19 October 2026)

Fountain Hills Threshold Days by Year (USC00023190)

15 fixed thresholds counted per year at Fountain Hills (USC00023190): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Fountain Hills Thresholds

  • Fountain Hills: days with 10 mm (0.39 in) or more of precipitation in 40 years, most in 1992 with 21.
  • Fountain Hills: days with a maximum temperature at or above 30 C (86 F) in 39 years, most in 1989 with 227.
  • Fountain Hills: days with a maximum temperature at or above 35 C (95 F) in 39 years, most in 1989 with 171.
  • Fountain Hills: days with a maximum temperature at or above 40 C (104 F) in 39 years, most in 1994 with 107.
  • 15 fixed thresholds have at least one qualifying day at Fountain Hills.
39 years with a qualifying day
Days at or above 30 C (86 F) per year at Fountain Hills Days per year at Fountain Hills with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 227 in 1989. 01002003001980: 1691981: 1881982: 1821983: 1801984: 1801985: 1861986: 2001987: 2011988: 2091989: 2271990: 2131991: 1851992: 2031993: 1981994: 1991995: 2041996: 2101997: 2061998: 1611999: 1912001: 2022002: 1802003: 1812004: 2022005: 1872007: 1922009: 1822010: 1732011: 1702012: 1922013: 1672014: 1742020: 1872021: 1712022: 1702023: 1862024: 1822025: 1722026: 1811980198419881992199620012005201120202024
Days per year at Fountain Hills with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 227 in 1989.
Days at or above 30 C (86 F) per year at Fountain Hills
YearDaysDecade average
1980169192.2
1981188192.2
1982182192.2
1983180192.2
1984180192.2
1985186192.2
1986200192.2
1987201192.2
1988209192.2
1989227192.2
1990213197
1991185197
1992203197
1993198197
1994199197
1995204197
1996210197
1997206197
1998161197
1999191197
2001202189.4
2002180189.4
2003181189.4
2004202189.4
2005187189.4
2007192189.4
2009182189.4
2010173175.2
2011170175.2
2012192175.2
2013167175.2
2014174175.2
2020187178.4
2021171178.4
2022170178.4
2023186178.4
2024182178.4
2025172178.4
2026181178.4
First to last qualifying date each year at Fountain Hills For each year, a bar from the first to the last day at Fountain Hills meeting 30 C (86 F). 1980: 28 February 1980 to 11 November 19801981: 20 February 1981 to 25 November 19811982: 23 February 1982 to 27 October 19821983: 10 March 1983 to 7 November 19831984: 13 March 1984 to 13 November 19841985: 10 March 1985 to 4 November 19851986: 25 February 1986 to 1 November 19861987: 2 April 1987 to 30 October 19871988: 29 February 1988 to 8 November 19881989: 24 February 1989 to 21 November 19891990: 27 February 1990 to 19 November 19901991: 23 February 1991 to 9 November 19911992: 26 March 1992 to 16 November 19921993: 8 March 1993 to 5 November 19931994: 4 March 1994 to 2 November 19941995: 11 March 1995 to 26 November 19951996: 9 February 1996 to 22 November 19961997: 9 March 1997 to 7 November 19971998: 24 March 1998 to 22 October 19981999: 21 March 1999 to 16 November 19992001: 21 March 2001 to 8 November 20012002: 21 March 2002 to 17 October 20022003: 1 April 2003 to 30 October 20032004: 9 March 2004 to 17 October 20042005: 4 April 2005 to 11 November 20052007: 9 March 2007 to 30 October 20072009: 21 March 2009 to 11 November 20092010: 11 April 2010 to 7 November 20102011: 11 March 2011 to 1 November 20112012: 25 March 2012 to 8 November 20122013: 15 March 2013 to 12 November 20132014: 25 March 2014 to 9 November 20142020: 23 April 2020 to 21 November 20202021: 8 March 2021 to 16 November 20212022: 26 March 2022 to 22 October 20222023: 10 April 2023 to 8 November 20232024: 12 April 2024 to 29 October 20242025: 25 March 2025 to 6 November 20252026: 27 February 2026 to 9 October 202619801985199019952001200720132023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Fountain Hills meeting 30 C (86 F).
First to last qualifying date each year at Fountain Hills
YearFirst dateLast date
19801980-02-281980-11-11
19811981-02-201981-11-25
19821982-02-231982-10-27
19831983-03-101983-11-07
19841984-03-131984-11-13
19851985-03-101985-11-04
19861986-02-251986-11-01
19871987-04-021987-10-30
19881988-02-291988-11-08
19891989-02-241989-11-21
19901990-02-271990-11-19
19911991-02-231991-11-09
19921992-03-261992-11-16
19931993-03-081993-11-05
19941994-03-041994-11-02
19951995-03-111995-11-26
19961996-02-091996-11-22
19971997-03-091997-11-07
19981998-03-241998-10-22
19991999-03-211999-11-16
20012001-03-212001-11-08
20022002-03-212002-10-17
20032003-04-012003-10-30
20042004-03-092004-10-17
20052005-04-042005-11-11
20072007-03-092007-10-30
20092009-03-212009-11-11
20102010-04-112010-11-07
20112011-03-112011-11-01
20122012-03-252012-11-08
20132013-03-152013-11-12
20142014-03-252014-11-09
20202020-04-232020-11-21
20212021-03-082021-11-16
20222022-03-262022-10-22
20232023-04-102023-11-08
20242024-04-122024-10-29
20252025-03-252025-11-06
20262026-02-272026-10-09

Every Fixed Threshold

Fixed thresholds at Fountain Hills
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days392271989181
35 C (95 F): Days391711989128
40 C (104 F): Days39107199456
45 C (113 F): Days303419952
50 C (122 F): Days1219952
90 F (32.2 C): Days391951989160
100 F (37.8 C): Days39140198994
110 F (43.3 C): Days3950199615
120 F (48.9 C): Days3319953
0 C (32 F): Frost days (min302119851
20 C (68 F): Tropical nights (min381472003117
25 C (77 F): Days with min3886202461
10 mm (0.39 in): Days with 10 mm or more rain402119924
25 mm (0.98 in): Days with 25 mm or more rain32519931
50 mm (1.97 in): Days with 50 mm or more rain6220212

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1980.

Download the Data

  • Data for Fountain Hills threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-17).