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

Riverview Threshold Days by Year

5 fixed thresholds counted per year at Riverview (ASN00040294): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Riverview Thresholds

  • Riverview: days with 10 mm (0.39 in) or more of precipitation in 27 years, most in 1921 with 35.
  • Riverview: days with 25 mm (0.98 in) or more of precipitation in 27 years, most in 1921 with 18.
  • Riverview: days with 50 mm (1.97 in) or more of precipitation in 26 years, most in 1921 with 5.
  • Riverview: days with 100 mm (3.94 in) or more of precipitation in 8 years, most in 1910 with 2.
  • 5 fixed thresholds have at least one qualifying day at Riverview.
27 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Riverview Days per year at Riverview with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 35 in 1921. 0102030401900: 221901: 291904: 271905: 191906: 311907: 291908: 241909: 251910: 311911: 261912: 241913: 191914: 271915: 171916: 301917: 251918: 121919: 151920: 281921: 351922: 241923: 181924: 321935: 171936: 201937: 131938: 20190019051908191119141917192019231936
Days per year at Riverview with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 35 in 1921.
Days with 10 mm (0.39 in) or more of precipitation per year at Riverview
YearDaysDecade average
19002225.8
19012925.8
19042725.8
19051925.8
19063125.8
19072925.8
19082425.8
19092525.8
19103122.6
19112622.6
19122422.6
19131922.6
19142722.6
19151722.6
19163022.6
19172522.6
19181222.6
19191522.6
19202827.4
19213527.4
19222427.4
19231827.4
19243227.4
19351717.5
19362017.5
19371317.5
19382017.5
First to last qualifying date each year at Riverview For each year, a bar from the first to the last day at Riverview meeting 10 mm (0.39 in). 1900: 7 January 1900 to 17 November 19001901: 14 January 1901 to 17 December 19011904: 26 February 1904 to 20 December 19041905: 15 January 1905 to 24 December 19051906: 1 January 1906 to 24 December 19061907: 3 January 1907 to 28 December 19071908: 7 January 1908 to 9 November 19081909: 18 January 1909 to 29 December 19091910: 10 January 1910 to 24 December 19101911: 3 January 1911 to 3 December 19111912: 6 January 1912 to 21 December 19121913: 5 January 1913 to 27 December 19131914: 11 January 1914 to 23 December 19141915: 2 January 1915 to 17 December 19151916: 16 January 1916 to 3 December 19161917: 6 January 1917 to 30 December 19171918: 11 January 1918 to 18 December 19181919: 24 February 1919 to 31 December 19191920: 3 January 1920 to 9 December 19201921: 8 January 1921 to 31 December 19211922: 2 January 1922 to 18 December 19221923: 3 January 1923 to 27 December 19231924: 7 January 1924 to 17 December 19241935: 3 January 1935 to 7 December 19351936: 7 January 1936 to 30 December 19361937: 1 February 1937 to 22 November 19371938: 7 January 1938 to 10 November 19381900190619101914191819221936JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Riverview meeting 10 mm (0.39 in).
First to last qualifying date each year at Riverview
YearFirst dateLast date
19001900-01-071900-11-17
19011901-01-141901-12-17
19041904-02-261904-12-20
19051905-01-151905-12-24
19061906-01-011906-12-24
19071907-01-031907-12-28
19081908-01-071908-11-09
19091909-01-181909-12-29
19101910-01-101910-12-24
19111911-01-031911-12-03
19121912-01-061912-12-21
19131913-01-051913-12-27
19141914-01-111914-12-23
19151915-01-021915-12-17
19161916-01-161916-12-03
19171917-01-061917-12-30
19181918-01-111918-12-18
19191919-02-241919-12-31
19201920-01-031920-12-09
19211921-01-081921-12-31
19221922-01-021922-12-18
19231923-01-031923-12-27
19241924-01-071924-12-17
19351935-01-031935-12-07
19361936-01-071936-12-30
19371937-02-011937-11-22
19381938-01-071938-11-10

Every Fixed Threshold

Fixed thresholds at Riverview
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2735192120
25 mm (0.98 in): Days with 25 mm or more rain271819216
50 mm (1.97 in): Days with 50 mm or more rain26519212
100 mm (3.94 in): Days with 100 mm or more rain8219101
200 mm (7.87 in): Days with 200 mm or more rain1119081

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1900.

Download the Data

  • Data for Riverview 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).