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Data as of 2026-10-12
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Built 2026-10-19 (19 October 2026)

Rainbow Threshold Days by Year (USC00417388)

17 fixed thresholds counted per year at Rainbow (USC00417388): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rainbow Thresholds

  • Rainbow: days with 10 mm (0.39 in) or more of precipitation in 84 years, most in 2007 with 39.
  • Rainbow: days with 25 mm (0.98 in) or more of precipitation in 84 years, most in 2007 with 21.
  • Rainbow: days with 50 mm (1.97 in) or more of precipitation in 76 years, most in 1961 with 6.
  • Rainbow: days with a maximum temperature at or above 30 C (86 F) in 25 years, most in 2011 with 170.
  • 17 fixed thresholds have at least one qualifying day at Rainbow.
25 years with a qualifying day
Days at or above 30 C (86 F) per year at Rainbow Days per year at Rainbow with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 170 in 2011. 0501001502002001: 1272002: 1442003: 1322004: 1182005: 1442006: 1642007: 1252008: 1392009: 1272010: 1322011: 1702012: 1512013: 1422014: 1482016: 1262017: 1462018: 1372019: 1402020: 1352021: 1092022: 1492023: 1442024: 1422025: 1452026: 87200120042007201020132017202020232026
Days per year at Rainbow with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 170 in 2011.
Days at or above 30 C (86 F) per year at Rainbow
YearDaysDecade average
2001127135.6
2002144135.6
2003132135.6
2004118135.6
2005144135.6
2006164135.6
2007125135.6
2008139135.6
2009127135.6
2010132143.6
2011170143.6
2012151143.6
2013142143.6
2014148143.6
2016126143.6
2017146143.6
2018137143.6
2019140143.6
2020135130.1
2021109130.1
2022149130.1
2023144130.1
2024142130.1
2025145130.1
202687130.1
First to last qualifying date each year at Rainbow For each year, a bar from the first to the last day at Rainbow meeting 30 C (86 F). 2001: 9 April 2001 to 24 October 20012002: 14 March 2002 to 10 November 20022003: 7 April 2003 to 1 November 20032004: 13 May 2004 to 30 October 20042005: 13 March 2005 to 4 December 20052006: 2 January 2006 to 19 October 20062007: 11 March 2007 to 22 October 20072008: 26 February 2008 to 27 October 20082009: 27 February 2009 to 15 October 20092010: 1 April 2010 to 22 December 20102011: 9 March 2011 to 27 October 20112012: 1 April 2012 to 3 November 20122013: 5 March 2013 to 18 November 20132014: 12 March 2014 to 26 October 20142016: 15 March 2016 to 2 November 20162017: 12 February 2017 to 6 November 20172018: 11 March 2018 to 7 October 20182019: 5 April 2019 to 21 October 20192020: 26 March 2020 to 22 October 20202021: 10 April 2021 to 11 December 20212022: 27 March 2022 to 23 October 20222023: 12 January 2023 to 8 November 20232024: 26 February 2024 to 31 October 20242025: 4 February 2025 to 27 December 20252026: 10 February 2026 to 8 October 20262001200520092013201820222026JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Rainbow meeting 30 C (86 F).
First to last qualifying date each year at Rainbow
YearFirst dateLast date
20012001-04-092001-10-24
20022002-03-142002-11-10
20032003-04-072003-11-01
20042004-05-132004-10-30
20052005-03-132005-12-04
20062006-01-022006-10-19
20072007-03-112007-10-22
20082008-02-262008-10-27
20092009-02-272009-10-15
20102010-04-012010-12-22
20112011-03-092011-10-27
20122012-04-012012-11-03
20132013-03-052013-11-18
20142014-03-122014-10-26
20162016-03-152016-11-02
20172017-02-122017-11-06
20182018-03-112018-10-07
20192019-04-052019-10-21
20202020-03-262020-10-22
20212021-04-102021-12-11
20222022-03-272022-10-23
20232023-01-122023-11-08
20242024-02-262024-10-31
20252025-02-042025-12-27
20262026-02-102026-10-08

Every Fixed Threshold

Fixed thresholds at Rainbow
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days25170201187
35 C (95 F): Days25115201147
40 C (104 F): Days175420112
90 F (32.2 C): Days25141201170
100 F (37.8 C): Days2586201117
110 F (43.3 C): Days2220111
0 C (32 F): Ice days (max21720212
0 C (32 F): Frost days (min2177200830
-10 C (14 F): Days with min12720142
20 C (68 F): Tropical nights (min21115202274
25 C (77 F): Days with min1950201114
10 mm (0.39 in): Days with 10 mm or more rain8439200718
25 mm (0.98 in): Days with 25 mm or more rain842120076
50 mm (1.97 in): Days with 50 mm or more rain76619611
100 mm (3.94 in): Days with 100 mm or more rain22219862
10 cm (3.9 in): Days with 10 cm or more snowfall2119611
25 cm (9.8 in): Days with 25 cm or more snowfall1119641

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2001.

Download the Data

  • Data for Rainbow 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 (2026-10-12).