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

Ruhnu Threshold Days by Year (LG000026227)

10 fixed thresholds counted per year at Ruhnu (LG000026227): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ruhnu Thresholds

  • Ruhnu: days with 10 mm (0.39 in) or more of precipitation in 104 years, most in 2010 with 28.
  • Ruhnu: days with 25 mm (0.98 in) or more of precipitation in 69 years, most in 1913 with 4.
  • Ruhnu: days with a maximum temperature at or below 0 C (32 F) in 19 years, most in 2010 with 86.
  • Ruhnu: nights with a minimum temperature at or below 0 C (32 F) in 19 years, most in 2010 with 125.
  • 10 fixed thresholds have at least one qualifying day at Ruhnu.
19 years with a qualifying day
Nights at or below 0 C (32 F) per year at Ruhnu Days per year at Ruhnu with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 125 in 2010. 0501001502007: 662008: 562009: 952010: 1252011: 952012: 1122013: 1102014: 732015: 552016: 892017: 942018: 1052019: 782020: 392021: 1042022: 1082023: 942024: 792026: 332007200920112013201520172019202120232026
Days per year at Ruhnu with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 125 in 2010.
Nights at or below 0 C (32 F) per year at Ruhnu
YearDaysDecade average
20076672.3
20085672.3
20099572.3
201012593.6
20119593.6
201211293.6
201311093.6
20147393.6
20155593.6
20168993.6
20179493.6
201810593.6
20197893.6
20203976.2
202110476.2
202210876.2
20239476.2
20247976.2
20263376.2
First to last qualifying date each year at Ruhnu For each year, a bar from the first to the last day at Ruhnu meeting 0 C (32 F). 2007: 20 January 2007 to 27 December 20072008: 2 January 2008 to 29 December 20082009: 1 January 2009 to 31 December 20092010: 1 January 2010 to 31 December 20102011: 1 January 2011 to 24 December 20112012: 1 January 2012 to 30 December 20122013: 5 January 2013 to 14 December 20132014: 12 January 2014 to 31 December 20142015: 5 January 2015 to 31 December 20152016: 1 January 2016 to 29 December 20162017: 2 January 2017 to 25 December 20172018: 6 January 2018 to 30 December 20182019: 2 January 2019 to 29 December 20192020: 5 January 2020 to 27 December 20202021: 1 January 2021 to 31 December 20212022: 1 January 2022 to 27 December 20222023: 1 January 2023 to 31 December 20232024: 1 January 2024 to 31 December 20242026: 4 January 2026 to 30 April 20262007201020132016201920222026JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Ruhnu meeting 0 C (32 F).
First to last qualifying date each year at Ruhnu
YearFirst dateLast date
20072007-01-202007-12-27
20082008-01-022008-12-29
20092009-01-012009-12-31
20102010-01-012010-12-31
20112011-01-012011-12-24
20122012-01-012012-12-30
20132013-01-052013-12-14
20142014-01-122014-12-31
20152015-01-052015-12-31
20162016-01-012016-12-29
20172017-01-022017-12-25
20182018-01-062018-12-30
20192019-01-022019-12-29
20202020-01-052020-12-27
20212021-01-012021-12-31
20222022-01-012022-12-27
20232023-01-012023-12-31
20242024-01-012024-12-31
20262026-01-042026-04-30

Every Fixed Threshold

Fixed thresholds at Ruhnu
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days1320183
0 C (32 F): Ice days (max1986201016
0 C (32 F): Frost days (min19125201033
-10 C (14 F): Days with min132320103
-20 C (-4 F): Days with min1120111
20 C (68 F): Tropical nights (min91020188
10 mm (0.39 in): Days with 10 mm or more rain10428201028
25 mm (0.98 in): Days with 25 mm or more rain694191315
50 mm (1.97 in): Days with 50 mm or more rain8119124
100 mm (3.94 in): Days with 100 mm or more rain10n/a1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2018.

Download the Data

  • Data for Ruhnu 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).