Daily records
Page built 2026-10-17
Data as of 2026-10-15
Search
Built 2026-10-17 (17 October 2026)

Humboldt Threshold Days by Year

12 fixed thresholds counted per year at Humboldt (CA004013401): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Humboldt Thresholds

  • Humboldt: days with a maximum temperature at or above 30 C (86 F) in 7 years, most in 1979 with 16.
  • Humboldt: days with a maximum temperature at or below 0 C (32 F) in 7 years, most in 1979 with 147.
  • Humboldt: nights with a minimum temperature at or below 0 C (32 F) in 7 years, most in 1979 with 213.
  • Humboldt: nights with a minimum temperature at or below -10 C (14 F) in 7 years, most in 1975 with 133.
  • 12 fixed thresholds have at least one qualifying day at Humboldt.
7 years with a qualifying day
Days at or above 30 C (86 F) per year at Humboldt Days per year at Humboldt with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 16 in 1979. 051015201975: 41978: 61979: 161980: 141981: 161982: 41983: 121975197819791980198119821983
Days per year at Humboldt with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 16 in 1979.
Days at or above 30 C (86 F) per year at Humboldt
YearDaysDecade average
197548.7
197868.7
1979168.7
19801411.5
19811611.5
1982411.5
19831211.5
First to last qualifying date each year at Humboldt For each year, a bar from the first to the last day at Humboldt meeting 30 C (86 F). 1975: 6 July 1975 to 29 July 19751978: 22 May 1978 to 4 September 19781979: 12 June 1979 to 16 September 19791980: 21 May 1980 to 7 September 19801981: 20 May 1981 to 11 September 19811982: 22 June 1982 to 3 September 19821983: 10 June 1983 to 1 September 19831975197819791980198119821983JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Humboldt meeting 30 C (86 F).
First to last qualifying date each year at Humboldt
YearFirst dateLast date
19751975-07-061975-07-29
19781978-05-221978-09-04
19791979-06-121979-09-16
19801980-05-211980-09-07
19811981-05-201981-09-11
19821982-06-221982-09-03
19831983-06-101983-09-01

Every Fixed Threshold

Fixed thresholds at Humboldt
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days716197912
35 C (95 F): Days4219802
90 F (32.2 C): Days6719813
0 C (32 F): Ice days (max71471979127
0 C (32 F): Frost days (min72131979192
-10 C (14 F): Days with min71331975105
-20 C (-4 F): Days with min784197852
-30 C (-22 F): Days with min737198215
-40 C (-40 F): Days with min4419791
10 mm (0.39 in): Days with 10 mm or more rain713198313
25 mm (0.98 in): Days with 25 mm or more rain4319811
10 cm (3.9 in): Days with 10 cm or more snowfall3119751

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1975.

Download the Data

  • Data for Humboldt 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 (2026-10-15).