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

Saint Helens Rfd Threshold Days by Year (USC00357466)

14 fixed thresholds counted per year at Saint Helens Rfd (USC00357466): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Saint Helens Rfd Thresholds

  • Saint Helens Rfd: days with 10 mm (0.39 in) or more of precipitation in 24 years, most in 1983 with 52.
  • Saint Helens Rfd: days with 25 mm (0.98 in) or more of precipitation in 24 years, most in 1996 with 13.
  • Saint Helens Rfd: nights with a minimum temperature at or below 0 C (32 F) in 13 years, most in 2011 with 60.
  • Saint Helens Rfd: nights with a minimum temperature at or below -10 C (14 F) in 10 years, most in 1990 with 7.
  • 14 fixed thresholds have at least one qualifying day at Saint Helens Rfd.
9 years with a qualifying day
Days at or above 30 C (86 F) per year at Saint Helens Rfd Days per year at Saint Helens Rfd with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 39 in 1996. 0102030401977: 241978: 231982: 211983: 91984: 221990: 261996: 392007: 172011: 9197719781982198319841990199620072011
Days per year at Saint Helens Rfd with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 39 in 1996.
Days at or above 30 C (86 F) per year at Saint Helens Rfd
YearDaysDecade average
19772423.5
19782323.5
19822117.3
1983917.3
19842217.3
19902632.5
19963932.5
20071717
201199
First to last qualifying date each year at Saint Helens Rfd For each year, a bar from the first to the last day at Saint Helens Rfd meeting 30 C (86 F). 1977: 5 June 1977 to 18 August 19771978: 2 June 1978 to 29 August 19781982: 9 June 1982 to 2 September 19821983: 23 May 1983 to 14 August 19831984: 28 May 1984 to 26 August 19841990: 4 May 1990 to 22 September 19901996: 2 June 1996 to 10 September 19962007: 15 May 2007 to 22 October 20072011: 20 August 2011 to 10 September 201119771982198419962011JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Saint Helens Rfd meeting 30 C (86 F).
First to last qualifying date each year at Saint Helens Rfd
YearFirst dateLast date
19771977-06-051977-08-18
19781978-06-021978-08-29
19821982-06-091982-09-02
19831983-05-231983-08-14
19841984-05-281984-08-26
19901990-05-041990-09-22
19961996-06-021996-09-10
20072007-05-152007-10-22
20112011-08-202011-09-10

Every Fixed Threshold

Fixed thresholds at Saint Helens Rfd
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days93919969
35 C (95 F): Days81819964
40 C (104 F): Days2119771
90 F (32.2 C): Days92919963
100 F (37.8 C): Days6519773
0 C (32 F): Ice days (max9819902
0 C (32 F): Frost days (min1360201160
-10 C (14 F): Days with min10719901
20 C (68 F): Tropical nights (min6219841
10 mm (0.39 in): Days with 10 mm or more rain2452198337
25 mm (0.98 in): Days with 25 mm or more rain241319968
50 mm (1.97 in): Days with 50 mm or more rain9219771
10 cm (3.9 in): Days with 10 cm or more snowfall5119772
25 cm (9.8 in): Days with 25 cm or more snowfall10n/a1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1977.

Download the Data

  • Data for Saint Helens Rfd 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).