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

Clarkia Threshold Days by Year (USC00101831)

15 fixed thresholds counted per year at Clarkia (USC00101831): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Clarkia Thresholds

  • Clarkia: days with a maximum temperature at or above 30 C (86 F) in 9 years, most in 1967 with 50.
  • Clarkia: days with a maximum temperature at or above 90 F (32.2 C) in 9 years, most in 1967 with 28.
  • Clarkia: days with a maximum temperature at or below 0 C (32 F) in 9 years, most in 1972 with 55.
  • Clarkia: nights with a minimum temperature at or below 0 C (32 F) in 9 years, most in 1972 with 225.
  • 15 fixed thresholds have at least one qualifying day at Clarkia.
9 years with a qualifying day
Days at or above 30 C (86 F) per year at Clarkia Days per year at Clarkia with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 50 in 1967. 02040601965: 261966: 371967: 501968: 211969: 291970: 271971: 391972: 81974: 31196519661967196819691970197119721974
Days per year at Clarkia with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 50 in 1967.
Days at or above 30 C (86 F) per year at Clarkia
YearDaysDecade average
19652632.6
19663732.6
19675032.6
19682132.6
19692932.6
19702726.3
19713926.3
1972826.3
19743126.3
First to last qualifying date each year at Clarkia For each year, a bar from the first to the last day at Clarkia meeting 30 C (86 F). 1965: 10 June 1965 to 19 August 19651966: 3 May 1966 to 22 September 19661967: 19 June 1967 to 28 September 19671968: 3 July 1968 to 9 August 19681969: 4 June 1969 to 11 September 19691970: 2 June 1970 to 2 September 19701971: 21 June 1971 to 30 August 19711972: 29 May 1972 to 30 July 19721974: 13 June 1974 to 18 September 197419651967196919711974JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Clarkia meeting 30 C (86 F).
First to last qualifying date each year at Clarkia
YearFirst dateLast date
19651965-06-101965-08-19
19661966-05-031966-09-22
19671967-06-191967-09-28
19681968-07-031968-08-09
19691969-06-041969-09-11
19701970-06-021970-09-02
19711971-06-211971-08-30
19721972-05-291972-07-30
19741974-06-131974-09-18

Every Fixed Threshold

Fixed thresholds at Clarkia
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days950196731
35 C (95 F): Days71219671
90 F (32.2 C): Days928196710
100 F (37.8 C): Days1119691
0 C (32 F): Ice days (max955197225
0 C (32 F): Frost days (min92251972214
-10 C (14 F): Days with min951196925
-20 C (-4 F): Days with min91919726
-30 C (-22 F): Days with min2519725
-40 C (-40 F): Days with min1119681
10 mm (0.39 in): Days with 10 mm or more rain942197130
25 mm (0.98 in): Days with 25 mm or more rain9819681
50 mm (1.97 in): Days with 50 mm or more rain2219681
10 cm (3.9 in): Days with 10 cm or more snowfall91319656
25 cm (9.8 in): Days with 25 cm or more snowfall4219661

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1965.

Download the Data

  • Data for Clarkia 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).