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Built 2026-10-17 (17 October 2026)

Salt River Summit Threshold Days by Year

10 fixed thresholds counted per year at Salt River Summit (USS0010G08S): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Salt River Summit Thresholds

  • Salt River Summit: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 2016 with 35.
  • Salt River Summit: days with a maximum temperature at or below 0 C (32 F) in 38 years, most in 1997 with 105.
  • Salt River Summit: nights with a minimum temperature at or below 0 C (32 F) in 37 years, most in 2011 with 229.
  • Salt River Summit: nights with a minimum temperature at or below -10 C (14 F) in 37 years, most in 2008 with 91.
  • 10 fixed thresholds have at least one qualifying day at Salt River Summit.
35 years with a qualifying day
Days at or above 30 C (86 F) per year at Salt River Summit Days per year at Salt River Summit with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 23 in 2003. 01020301989: 111990: 181991: 91992: 31994: 41995: 11996: 31998: 22000: 172001: 182002: 132003: 232004: 12005: 92006: 152007: 232008: 82009: 32010: 42011: 42012: 152013: 52014: 32015: 32016: 42017: 42018: 72019: 72020: 62021: 162022: 152023: 72024: 152025: 12026: 12198919942000200420082012201620202024
Days per year at Salt River Summit with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 23 in 2003.
Days at or above 30 C (86 F) per year at Salt River Summit
YearDaysDecade average
19891111
1990185.7
199195.7
199235.7
199445.7
199515.7
199635.7
199825.7
20001713
20011813
20021313
20032313
2004113
2005913
20061513
20072313
2008813
2009313
201045.6
201145.6
2012155.6
201355.6
201435.6
201535.6
201645.6
201745.6
201875.6
201975.6
2020610.3
20211610.3
20221510.3
2023710.3
20241510.3
2025110.3
20261210.3
First to last qualifying date each year at Salt River Summit For each year, a bar from the first to the last day at Salt River Summit meeting 30 C (86 F). 1989: 3 July 1989 to 31 July 19891990: 23 June 1990 to 14 September 19901991: 5 July 1991 to 10 August 19911992: 2 August 1992 to 13 August 19921994: 30 July 1994 to 7 August 19941995: 28 July 1995 to 28 July 19951996: 11 August 1996 to 13 August 19961998: 18 July 1998 to 19 July 19982000: 13 July 2000 to 15 August 20002001: 30 June 2001 to 4 September 20012002: 25 June 2002 to 24 July 20022003: 29 May 2003 to 14 August 20032004: 17 July 2004 to 17 July 20042005: 12 July 2005 to 22 July 20052006: 14 July 2006 to 22 August 20062007: 28 June 2007 to 3 September 20072008: 20 July 2008 to 25 August 20082009: 23 July 2009 to 22 August 20092010: 16 July 2010 to 26 August 20102011: 3 July 2011 to 26 August 20112012: 1 July 2012 to 28 August 20122013: 28 June 2013 to 18 August 20132014: 14 July 2014 to 27 July 20142015: 27 June 2015 to 25 August 20152016: 21 July 2016 to 26 July 20162017: 5 July 2017 to 1 August 20172018: 6 July 2018 to 11 August 20182019: 21 July 2019 to 1 September 20192020: 31 July 2020 to 22 August 20202021: 13 June 2021 to 14 August 20212022: 8 July 2022 to 7 September 20222023: 16 July 2023 to 17 August 20232024: 23 June 2024 to 1 September 20242025: 20 August 2025 to 20 August 20252026: 11 July 2026 to 21 August 20261989199520022007201220172022JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Salt River Summit meeting 30 C (86 F).
First to last qualifying date each year at Salt River Summit
YearFirst dateLast date
19891989-07-031989-07-31
19901990-06-231990-09-14
19911991-07-051991-08-10
19921992-08-021992-08-13
19941994-07-301994-08-07
19951995-07-281995-07-28
19961996-08-111996-08-13
19981998-07-181998-07-19
20002000-07-132000-08-15
20012001-06-302001-09-04
20022002-06-252002-07-24
20032003-05-292003-08-14
20042004-07-172004-07-17
20052005-07-122005-07-22
20062006-07-142006-08-22
20072007-06-282007-09-03
20082008-07-202008-08-25
20092009-07-232009-08-22
20102010-07-162010-08-26
20112011-07-032011-08-26
20122012-07-012012-08-28
20132013-06-282013-08-18
20142014-07-142014-07-27
20152015-06-272015-08-25
20162016-07-212016-07-26
20172017-07-052017-08-01
20182018-07-062018-08-11
20192019-07-212019-09-01
20202020-07-312020-08-22
20212021-06-132021-08-14
20222022-07-082022-09-07
20232023-07-162023-08-17
20242024-06-232024-09-01
20252025-08-202025-08-20
20262026-07-112026-08-21

Every Fixed Threshold

Fixed thresholds at Salt River Summit
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3523200312
90 F (32.2 C): Days18720031
0 C (32 F): Ice days (max38105199733
0 C (32 F): Frost days (min372292011113
-10 C (14 F): Days with min3791200820
-20 C (-4 F): Days with min311019906
-30 C (-22 F): Days with min1519905
10 mm (0.39 in): Days with 10 mm or more rain463520166
25 mm (0.98 in): Days with 25 mm or more rain31619861
50 mm (1.97 in): Days with 50 mm or more rain1119861

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1989.

Download the Data

  • Data for Salt River Summit 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-15).