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

Herrvik Threshold Days by Year (SWE00138088)

8 fixed thresholds counted per year at Herrvik (SWE00138088): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Herrvik Thresholds

  • Herrvik: days with 10 mm (0.39 in) or more of precipitation in 31 years, most in 1984 with 18.
  • Herrvik: nights with a minimum temperature at or below 0 C (32 F) in 27 years, most in 1985 with 144.
  • Herrvik: days with a maximum temperature at or below 0 C (32 F) in 26 years, most in 1969 with 62.
  • Herrvik: nights with a minimum temperature at or below -10 C (14 F) in 21 years, most in 1987 with 26.
  • 8 fixed thresholds have at least one qualifying day at Herrvik.
3 years with a qualifying day
Days at or above 30 C (86 F) per year at Herrvik Days per year at Herrvik with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 2 in 1975. 011221970: 11975: 21995: 1197019751995
Days per year at Herrvik with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 2 in 1975.
Days at or above 30 C (86 F) per year at Herrvik
YearDaysDecade average
197011.5
197521.5
199511
First to last qualifying date each year at Herrvik For each year, a bar from the first to the last day at Herrvik meeting 30 C (86 F). 1970: 20 June 1970 to 20 June 19701975: 7 August 1975 to 8 August 19751995: 19 August 1995 to 19 August 1995197019751995JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Herrvik meeting 30 C (86 F).
First to last qualifying date each year at Herrvik
YearFirst dateLast date
19701970-06-201970-06-20
19751975-08-071975-08-08
19951995-08-191995-08-19

Every Fixed Threshold

Fixed thresholds at Herrvik
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3219751
0 C (32 F): Ice days (max2662196915
0 C (32 F): Frost days (min271441985104
-10 C (14 F): Days with min212619876
20 C (68 F): Tropical nights (min4219751
10 mm (0.39 in): Days with 10 mm or more rain3118198415
25 mm (0.98 in): Days with 25 mm or more rain20419952
50 mm (1.97 in): Days with 50 mm or more rain1120091

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1970.

Download the Data

  • Data for Herrvik 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).