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Built 2026-10-19 (19 October 2026)

Surprise Threshold Days by Year (USC00258328)

18 fixed thresholds counted per year at Surprise (USC00258328): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Surprise Thresholds

  • Surprise: days with 10 mm (0.39 in) or more of precipitation in 45 years, most in 1982 with 36.
  • Surprise: days with 25 mm (0.98 in) or more of precipitation in 45 years, most in 1984 with 12.
  • Surprise: days with a maximum temperature at or above 30 C (86 F) in 38 years, most in 2012 with 93.
  • Surprise: days with a maximum temperature at or above 90 F (32.2 C) in 38 years, most in 2012 with 66.
  • 18 fixed thresholds have at least one qualifying day at Surprise.
38 years with a qualifying day
Days at or above 30 C (86 F) per year at Surprise Days per year at Surprise with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 93 in 2012. 02550751001987: 701988: 761989: 541990: 591991: 641992: 181993: 201995: 641996: 391997: 611998: 711999: 502000: 692001: 622002: 792003: 742004: 572005: 842006: 732007: 652008: 482009: 352010: 742011: 552012: 932013: 572014: 392015: 452016: 592017: 502018: 532019: 542020: 582021: 552022: 642023: 562024: 542026: 661987199119962000200420082012201620202024
Days per year at Surprise with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 93 in 2012.
Days at or above 30 C (86 F) per year at Surprise
YearDaysDecade average
19877066.7
19887666.7
19895466.7
19905949.6
19916449.6
19921849.6
19932049.6
19956449.6
19963949.6
19976149.6
19987149.6
19995049.6
20006964.6
20016264.6
20027964.6
20037464.6
20045764.6
20058464.6
20067364.6
20076564.6
20084864.6
20093564.6
20107457.9
20115557.9
20129357.9
20135757.9
20143957.9
20154557.9
20165957.9
20175057.9
20185357.9
20195457.9
20205858.8
20215558.8
20226458.8
20235658.8
20245458.8
20266658.8
First to last qualifying date each year at Surprise For each year, a bar from the first to the last day at Surprise meeting 30 C (86 F). 1987: 20 April 1987 to 2 October 19871988: 9 April 1988 to 27 September 19881989: 21 April 1989 to 14 October 19891990: 23 April 1990 to 6 October 19901991: 6 April 1991 to 9 October 19911992: 15 April 1992 to 3 October 19921993: 15 May 1993 to 13 September 19931995: 7 June 1995 to 13 October 19951996: 12 April 1996 to 11 September 19961997: 17 May 1997 to 6 October 19971998: 14 May 1998 to 30 September 19981999: 28 May 1999 to 24 September 19992000: 6 April 2000 to 2 October 20002001: 27 April 2001 to 3 October 20012002: 15 April 2002 to 2 October 20022003: 2 April 2003 to 23 October 20032004: 17 April 2004 to 21 September 20042005: 11 May 2005 to 19 October 20052006: 14 April 2006 to 8 October 20062007: 30 April 2007 to 7 October 20072008: 26 May 2008 to 28 September 20082009: 24 April 2009 to 25 August 20092010: 23 May 2010 to 9 October 20102011: 10 April 2011 to 5 October 20112012: 1 April 2012 to 26 September 20122013: 14 May 2013 to 3 October 20132014: 8 May 2014 to 20 September 20142015: 17 March 2015 to 12 October 20152016: 6 May 2016 to 24 September 20162017: 8 May 2017 to 25 September 20172018: 6 May 2018 to 4 October 20182019: 21 April 2019 to 1 October 20192020: 2 May 2020 to 10 October 20202021: 5 April 2021 to 29 September 20212022: 13 April 2022 to 24 October 20222023: 13 April 2023 to 21 October 20232024: 15 April 2024 to 11 October 20242026: 21 March 2026 to 19 September 202619871992199820032008201320182023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Surprise meeting 30 C (86 F).
First to last qualifying date each year at Surprise
YearFirst dateLast date
19871987-04-201987-10-02
19881988-04-091988-09-27
19891989-04-211989-10-14
19901990-04-231990-10-06
19911991-04-061991-10-09
19921992-04-151992-10-03
19931993-05-151993-09-13
19951995-06-071995-10-13
19961996-04-121996-09-11
19971997-05-171997-10-06
19981998-05-141998-09-30
19991999-05-281999-09-24
20002000-04-062000-10-02
20012001-04-272001-10-03
20022002-04-152002-10-02
20032003-04-022003-10-23
20042004-04-172004-09-21
20052005-05-112005-10-19
20062006-04-142006-10-08
20072007-04-302007-10-07
20082008-05-262008-09-28
20092009-04-242009-08-25
20102010-05-232010-10-09
20112011-04-102011-10-05
20122012-04-012012-09-26
20132013-05-142013-10-03
20142014-05-082014-09-20
20152015-03-172015-10-12
20162016-05-062016-09-24
20172017-05-082017-09-25
20182018-05-062018-10-04
20192019-04-212019-10-01
20202020-05-022020-10-10
20212021-04-052021-09-29
20222022-04-132022-10-24
20232023-04-132023-10-21
20242024-04-152024-10-11
20262026-03-212026-09-19

Every Fixed Threshold

Fixed thresholds at Surprise
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3893201266
35 C (95 F): Days363220127
40 C (104 F): Days3219901
90 F (32.2 C): Days3866201228
100 F (37.8 C): Days15620121
0 C (32 F): Ice days (max3873199318
0 C (32 F): Frost days (min38179201385
-10 C (14 F): Days with min3877202229
-20 C (-4 F): Days with min352320148
-30 C (-22 F): Days with min4520211
20 C (68 F): Tropical nights (min3849200728
25 C (77 F): Days with min5119901
10 mm (0.39 in): Days with 10 mm or more rain4536198222
25 mm (0.98 in): Days with 25 mm or more rain451219845
50 mm (1.97 in): Days with 50 mm or more rain36419852
100 mm (3.94 in): Days with 100 mm or more rain6119851
10 cm (3.9 in): Days with 10 cm or more snowfall38519822
25 cm (9.8 in): Days with 25 cm or more snowfall4119831

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1987.

Download the Data

  • Data for Surprise 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).