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Data as of 2026-10-17
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Built 2026-10-19 (19 October 2026)

Eureka River Threshold Days by Year (CA003072475)

13 fixed thresholds counted per year at Eureka River (CA003072475): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Eureka River Thresholds

  • Eureka River: days with 10 mm (0.39 in) or more of precipitation in 20 years, most in 1973 with 16.
  • Eureka River: nights with a minimum temperature at or below 0 C (32 F) in 18 years, most in 1975 with 249.
  • Eureka River: nights with a minimum temperature at or below -10 C (14 F) in 18 years, most in 1966 with 150.
  • Eureka River: nights with a minimum temperature at or below -20 C (-4 F) in 18 years, most in 1966 with 96.
  • 13 fixed thresholds have at least one qualifying day at Eureka River.
12 years with a qualifying day
Days at or above 30 C (86 F) per year at Eureka River Days per year at Eureka River with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 10 in 1981. 0358101965: 51967: 41968: 11969: 21970: 11973: 11975: 21978: 31979: 11981: 101982: 41983: 2196519681970197519791982
Days per year at Eureka River with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 10 in 1981.
Days at or above 30 C (86 F) per year at Eureka River
YearDaysDecade average
196553
196743
196813
196923
197011.6
197311.6
197521.6
197831.6
197911.6
1981105.3
198245.3
198325.3
First to last qualifying date each year at Eureka River For each year, a bar from the first to the last day at Eureka River meeting 30 C (86 F). 1965: 30 July 1965 to 3 August 19651967: 10 August 1967 to 31 August 19671968: 4 July 1968 to 4 July 19681969: 16 June 1969 to 17 June 19691970: 3 June 1970 to 3 June 19701973: 14 May 1973 to 14 May 19731975: 11 July 1975 to 12 July 19751978: 3 June 1978 to 9 August 19781979: 18 July 1979 to 18 July 19791981: 12 July 1981 to 25 August 19811982: 12 June 1982 to 29 July 19821983: 29 May 1983 to 30 May 1983196519681970197519791982JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Eureka River meeting 30 C (86 F).
First to last qualifying date each year at Eureka River
YearFirst dateLast date
19651965-07-301965-08-03
19671967-08-101967-08-31
19681968-07-041968-07-04
19691969-06-161969-06-17
19701970-06-031970-06-03
19731973-05-141973-05-14
19751975-07-111975-07-12
19781978-06-031978-08-09
19791979-07-181979-07-18
19811981-07-121981-08-25
19821982-06-121982-07-29
19831983-05-291983-05-30

Every Fixed Threshold

Fixed thresholds at Eureka River
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days121019812
90 F (32.2 C): Days3219812
0 C (32 F): Ice days (max171351982127
0 C (32 F): Frost days (min182491975226
-10 C (14 F): Days with min181501966132
-20 C (-4 F): Days with min1896196667
-30 C (-22 F): Days with min1838198220
-40 C (-40 F): Days with min182019692
10 mm (0.39 in): Days with 10 mm or more rain2016197312
25 mm (0.98 in): Days with 25 mm or more rain13319733
50 mm (1.97 in): Days with 50 mm or more rain2119631
10 cm (3.9 in): Days with 10 cm or more snowfall18519632
25 cm (9.8 in): Days with 25 cm or more snowfall2119661

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 Eureka 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 (2026-10-17).