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Data as of 2025-12-31
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Built 2026-10-17 (17 October 2026)

Opawa Threshold Days by Year

3 fixed thresholds counted per year at Opawa (ASN00008161): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Opawa Thresholds

  • Opawa: days with 10 mm (0.39 in) or more of precipitation in 24 years, most in 1917 with 18.
  • Opawa: days with 25 mm (0.98 in) or more of precipitation in 19 years, most in 1917 with 7.
  • Opawa: days with 50 mm (1.97 in) or more of precipitation in 2 years, most in 1916 with 1.
  • 3 fixed thresholds have at least one qualifying day at Opawa.
24 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Opawa Days per year at Opawa with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 18 in 1917. 051015201907: 141911: 61912: 61913: 91914: 41915: 121916: 101917: 181918: 131919: 91920: 111921: 151922: 71923: 131924: 91925: 101926: 61927: 91932: 111933: 111934: 101935: 81939: 141944: 1119071913191619191922192519321935
Days per year at Opawa with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 18 in 1917.
Days with 10 mm (0.39 in) or more of precipitation per year at Opawa
YearDaysDecade average
19071414
191169.7
191269.7
191399.7
191449.7
1915129.7
1916109.7
1917189.7
1918139.7
191999.7
19201110
19211510
1922710
19231310
1924910
19251010
1926610
1927910
19321110.8
19331110.8
19341010.8
1935810.8
19391410.8
19441111
First to last qualifying date each year at Opawa For each year, a bar from the first to the last day at Opawa meeting 10 mm (0.39 in). 1907: 17 May 1907 to 23 September 19071911: 23 May 1911 to 30 August 19111912: 20 January 1912 to 27 October 19121913: 4 January 1913 to 22 September 19131914: 27 July 1914 to 12 November 19141915: 20 February 1915 to 21 December 19151916: 21 January 1916 to 5 October 19161917: 18 March 1917 to 9 December 19171918: 24 February 1918 to 16 September 19181919: 16 April 1919 to 3 August 19191920: 12 March 1920 to 7 August 19201921: 22 March 1921 to 17 September 19211922: 1 March 1922 to 25 September 19221923: 13 February 1923 to 8 August 19231924: 12 May 1924 to 22 August 19241925: 23 January 1925 to 30 December 19251926: 16 April 1926 to 19 November 19261927: 14 March 1927 to 14 August 19271932: 29 January 1932 to 29 October 19321933: 6 March 1933 to 30 November 19331934: 16 January 1934 to 23 August 19341935: 6 January 1935 to 5 August 19351939: 13 February 1939 to 27 August 19391944: 14 March 1944 to 27 August 194419071913191619191922192519321935JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Opawa meeting 10 mm (0.39 in).
First to last qualifying date each year at Opawa
YearFirst dateLast date
19071907-05-171907-09-23
19111911-05-231911-08-30
19121912-01-201912-10-27
19131913-01-041913-09-22
19141914-07-271914-11-12
19151915-02-201915-12-21
19161916-01-211916-10-05
19171917-03-181917-12-09
19181918-02-241918-09-16
19191919-04-161919-08-03
19201920-03-121920-08-07
19211921-03-221921-09-17
19221922-03-011922-09-25
19231923-02-131923-08-08
19241924-05-121924-08-22
19251925-01-231925-12-30
19261926-04-161926-11-19
19271927-03-141927-08-14
19321932-01-291932-10-29
19331933-03-061933-11-30
19341934-01-161934-08-23
19351935-01-061935-08-05
19391939-02-131939-08-27
19441944-03-141944-08-27

Every Fixed Threshold

Fixed thresholds at Opawa
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2418191711
25 mm (0.98 in): Days with 25 mm or more rain19719171
50 mm (1.97 in): Days with 50 mm or more rain2119161

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1907.

Download the Data

  • Data for Opawa 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 (2025-12-31).