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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Riverton (River) Threshold Days by Year (USC00117318)

6 fixed thresholds counted per year at Riverton (River) (USC00117318): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Riverton (River) Thresholds

  • Riverton (River): days with 10 mm (0.39 in) or more of precipitation in 8 years, most in 1981 with 36.
  • Riverton (River): days with 25 mm (0.98 in) or more of precipitation in 8 years, most in 1979 with 12.
  • Riverton (River): days with 50 mm (1.97 in) or more of precipitation in 6 years, most in 2008 with 5.
  • Riverton (River): days with 100 mm (3.94 in) or more of precipitation in 2 years, most in 1981 with 1.
  • 6 fixed thresholds have at least one qualifying day at Riverton (River).
8 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Riverton (River) Days per year at Riverton (River) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 36 in 1981. 0102030401979: 211980: 191981: 362003: 232004: 342005: 282006: 322008: 3019791980198120032004200520062008
Days per year at Riverton (River) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 36 in 1981.
Days with 10 mm (0.39 in) or more of precipitation per year at Riverton (River)
YearDaysDecade average
19792121
19801927.5
19813627.5
20032329.4
20043429.4
20052829.4
20063229.4
20083029.4
First to last qualifying date each year at Riverton (River) For each year, a bar from the first to the last day at Riverton (River) meeting 10 mm (0.39 in). 1979: 13 January 1979 to 24 December 19791980: 15 February 1980 to 8 December 19801981: 10 February 1981 to 20 November 19812003: 16 February 2003 to 23 December 20032004: 5 January 2004 to 7 December 20042005: 3 January 2005 to 28 November 20052006: 29 January 2006 to 31 December 20062008: 8 January 2008 to 29 December 200819791980198120032004200520062008JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Riverton (River) meeting 10 mm (0.39 in).
First to last qualifying date each year at Riverton (River)
YearFirst dateLast date
19791979-01-131979-12-24
19801980-02-151980-12-08
19811981-02-101981-11-20
20032003-02-162003-12-23
20042004-01-052004-12-07
20052005-01-032005-11-28
20062006-01-292006-12-31
20082008-01-082008-12-29

Every Fixed Threshold

Fixed thresholds at Riverton (River)
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain836198130
25 mm (0.98 in): Days with 25 mm or more rain812197912
50 mm (1.97 in): Days with 50 mm or more rain6520085
100 mm (3.94 in): Days with 100 mm or more rain2119811
10 cm (3.9 in): Days with 10 cm or more snowfall2219991
25 cm (9.8 in): Days with 25 cm or more snowfall1119991

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1979.

Download the Data

  • Data for Riverton (River) 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).