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

Slettnes Fyr Threshold Days by Year (NOE00109777)

8 fixed thresholds counted per year at Slettnes Fyr (NOE00109777): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Slettnes Fyr Thresholds

  • Slettnes Fyr: days with a maximum temperature at or below 0 C (32 F) in 70 years, most in 1966 with 139.
  • Slettnes Fyr: nights with a minimum temperature at or below 0 C (32 F) in 70 years, most in 1968 with 238.
  • Slettnes Fyr: nights with a minimum temperature at or below -10 C (14 F) in 70 years, most in 1978 with 59.
  • Slettnes Fyr: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 1999 with 15.
  • 8 fixed thresholds have at least one qualifying day at Slettnes Fyr.
4 years with a qualifying day
Days at or above 30 C (86 F) per year at Slettnes Fyr Days per year at Slettnes Fyr with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 1 in 1960. 001111960: 11972: 12018: 12025: 11960197220182025
Days per year at Slettnes Fyr with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 1 in 1960.
Days at or above 30 C (86 F) per year at Slettnes Fyr
YearDaysDecade average
196011
197211
201811
202511
First to last qualifying date each year at Slettnes Fyr For each year, a bar from the first to the last day at Slettnes Fyr meeting 30 C (86 F). 1960: 29 July 1960 to 29 July 19601972: 9 July 1972 to 9 July 19722018: 19 July 2018 to 19 July 20182025: 2 August 2025 to 2 August 20251960197220182025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Slettnes Fyr meeting 30 C (86 F).
First to last qualifying date each year at Slettnes Fyr
YearFirst dateLast date
19601960-07-291960-07-29
19721972-07-091972-07-09
20182018-07-192018-07-19
20252025-08-022025-08-02

Every Fixed Threshold

Fixed thresholds at Slettnes Fyr
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days4119601
90 F (32.2 C): Days1119721
0 C (32 F): Ice days (max70139196643
0 C (32 F): Frost days (min702381968100
-10 C (14 F): Days with min7059197816
-20 C (-4 F): Days with min6319803
10 mm (0.39 in): Days with 10 mm or more rain4615199910
25 mm (0.98 in): Days with 25 mm or more rain4219691

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1960.

Download the Data

  • Data for Slettnes Fyr 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).