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Data as of 2025-12-31
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Built 2026-10-18 (18 October 2026)

Rainbow Threshold Days by Year

4 fixed thresholds counted per year at Rainbow (ASN00077083): 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 23 years, most in 1973 with 18.
  • Rainbow: days with 25 mm (0.98 in) or more of precipitation in 13 years, most in 1973 with 4.
  • Rainbow: days with 50 mm (1.97 in) or more of precipitation in 5 years, most in 1969 with 1.
  • Rainbow: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 2003 with 1.
  • 4 fixed thresholds have at least one qualifying day at Rainbow.
23 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Rainbow Days per year at Rainbow with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 18 in 1973. 051015201969: 111970: 81971: 81972: 51973: 181974: 131976: 61982: 11983: 111984: 81985: 91986: 111987: 71994: 41995: 111997: 71998: 41999: 72000: 102001: 52002: 32003: 62004: 419691972197619841987199720002003
Days per year at Rainbow with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 18 in 1973.
Days with 10 mm (0.39 in) or more of precipitation per year at Rainbow
YearDaysDecade average
19691111
197089.7
197189.7
197259.7
1973189.7
1974139.7
197669.7
198217.8
1983117.8
198487.8
198597.8
1986117.8
198777.8
199446.6
1995116.6
199776.6
199846.6
199976.6
2000105.6
200155.6
200235.6
200365.6
200445.6
First to last qualifying date each year at Rainbow For each year, a bar from the first to the last day at Rainbow meeting 10 mm (0.39 in). 1969: 31 January 1969 to 1 December 19691970: 3 January 1970 to 15 November 19701971: 17 April 1971 to 10 December 19711972: 18 January 1972 to 7 September 19721973: 31 January 1973 to 28 November 19731974: 14 January 1974 to 5 October 19741976: 4 October 1976 to 24 December 19761982: 23 March 1982 to 23 March 19821983: 3 March 1983 to 31 December 19831984: 15 January 1984 to 2 November 19841985: 3 April 1985 to 15 November 19851986: 17 April 1986 to 17 December 19861987: 25 January 1987 to 2 December 19871994: 11 February 1994 to 3 October 19941995: 6 February 1995 to 23 October 19951997: 22 January 1997 to 14 November 19971998: 13 January 1998 to 12 November 19981999: 28 January 1999 to 27 August 19992000: 22 February 2000 to 22 December 20002001: 21 March 2001 to 24 October 20012002: 19 May 2002 to 31 December 20022003: 21 February 2003 to 2 October 20032004: 8 September 2004 to 8 December 200419691972197619841987199720002003JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Rainbow meeting 10 mm (0.39 in).
First to last qualifying date each year at Rainbow
YearFirst dateLast date
19691969-01-311969-12-01
19701970-01-031970-11-15
19711971-04-171971-12-10
19721972-01-181972-09-07
19731973-01-311973-11-28
19741974-01-141974-10-05
19761976-10-041976-12-24
19821982-03-231982-03-23
19831983-03-031983-12-31
19841984-01-151984-11-02
19851985-04-031985-11-15
19861986-04-171986-12-17
19871987-01-251987-12-02
19941994-02-111994-10-03
19951995-02-061995-10-23
19971997-01-221997-11-14
19981998-01-131998-11-12
19991999-01-281999-08-27
20002000-02-222000-12-22
20012001-03-212001-10-24
20022002-05-192002-12-31
20032003-02-212003-10-02
20042004-09-082004-12-08

Every Fixed Threshold

Fixed thresholds at Rainbow
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain231819734
25 mm (0.98 in): Days with 25 mm or more rain13419732
50 mm (1.97 in): Days with 50 mm or more rain5119691
100 mm (3.94 in): Days with 100 mm or more rain1120031

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1969.

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 (2025-12-31).