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

Claremont Threshold Days by Year

3 fixed thresholds counted per year at Claremont (ASN00009079): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Claremont Thresholds

  • Claremont: days with 10 mm (0.39 in) or more of precipitation in 12 years, most in 1917 with 38.
  • Claremont: days with 25 mm (0.98 in) or more of precipitation in 12 years, most in 1917 with 8.
  • Claremont: days with 50 mm (1.97 in) or more of precipitation in 9 years, most in 1915 with 2.
  • 3 fixed thresholds have at least one qualifying day at Claremont.
12 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Claremont Days per year at Claremont with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 38 in 1917. 0102030401913: 261915: 331916: 271917: 381918: 301919: 251920: 341921: 331922: 181924: 251925: 231926: 36191319161918192019221925
Days per year at Claremont with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 38 in 1917.
Days with 10 mm (0.39 in) or more of precipitation per year at Claremont
YearDaysDecade average
19132629.8
19153329.8
19162729.8
19173829.8
19183029.8
19192529.8
19203428.2
19213328.2
19221828.2
19242528.2
19252328.2
19263628.2
First to last qualifying date each year at Claremont For each year, a bar from the first to the last day at Claremont meeting 10 mm (0.39 in). 1913: 11 April 1913 to 25 October 19131915: 26 February 1915 to 21 October 19151916: 15 February 1916 to 24 November 19161917: 7 April 1917 to 20 December 19171918: 17 February 1918 to 28 October 19181919: 29 March 1919 to 10 December 19191920: 29 March 1920 to 10 October 19201921: 20 February 1921 to 13 October 19211922: 27 April 1922 to 25 September 19221924: 14 May 1924 to 16 November 19241925: 24 January 1925 to 8 December 19251926: 11 March 1926 to 19 November 1926191319161918192019221925JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Claremont meeting 10 mm (0.39 in).
First to last qualifying date each year at Claremont
YearFirst dateLast date
19131913-04-111913-10-25
19151915-02-261915-10-21
19161916-02-151916-11-24
19171917-04-071917-12-20
19181918-02-171918-10-28
19191919-03-291919-12-10
19201920-03-291920-10-10
19211921-02-201921-10-13
19221922-04-271922-09-25
19241924-05-141924-11-16
19251925-01-241925-12-08
19261926-03-111926-11-19

Every Fixed Threshold

Fixed thresholds at Claremont
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain1238191736
25 mm (0.98 in): Days with 25 mm or more rain12819175
50 mm (1.97 in): Days with 50 mm or more rain9219151

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1913.

Download the Data

  • Data for Claremont 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).