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

Oulu Vihreasaari Threshold Days by Year (FIE00145661)

8 fixed thresholds counted per year at Oulu Vihreasaari (FIE00145661): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Oulu Vihreasaari Thresholds

  • Oulu Vihreasaari: days with a maximum temperature at or below 0 C (32 F) in 29 years, most in 2010 with 135.
  • Oulu Vihreasaari: nights with a minimum temperature at or below 0 C (32 F) in 29 years, most in 2023 with 193.
  • Oulu Vihreasaari: nights with a minimum temperature at or below -10 C (14 F) in 29 years, most in 2010 with 99.
  • Oulu Vihreasaari: nights with a minimum temperature at or below -20 C (-4 F) in 28 years, most in 2010 with 37.
  • 8 fixed thresholds have at least one qualifying day at Oulu Vihreasaari.
6 years with a qualifying day
Days at or above 30 C (86 F) per year at Oulu Vihreasaari Days per year at Oulu Vihreasaari with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 3 in 2018. 01232000: 22010: 22011: 12014: 12018: 32025: 1200020102011201420182025
Days per year at Oulu Vihreasaari with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 3 in 2018.
Days at or above 30 C (86 F) per year at Oulu Vihreasaari
YearDaysDecade average
200022
201021.8
201111.8
201411.8
201831.8
202511
First to last qualifying date each year at Oulu Vihreasaari For each year, a bar from the first to the last day at Oulu Vihreasaari meeting 30 C (86 F). 2000: 29 June 2000 to 30 June 20002010: 29 July 2010 to 30 July 20102011: 10 June 2011 to 10 June 20112014: 14 July 2014 to 14 July 20142018: 17 July 2018 to 30 July 20182025: 31 July 2025 to 31 July 2025200020102011201420182025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Oulu Vihreasaari meeting 30 C (86 F).
First to last qualifying date each year at Oulu Vihreasaari
YearFirst dateLast date
20002000-06-292000-06-30
20102010-07-292010-07-30
20112011-06-102011-06-10
20142014-07-142014-07-14
20182018-07-172018-07-30
20252025-07-312025-07-31

Every Fixed Threshold

Fixed thresholds at Oulu Vihreasaari
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days6320181
90 F (32.2 C): Days1120101
0 C (32 F): Ice days (max29135201063
0 C (32 F): Frost days (min291932023146
-10 C (14 F): Days with min2999201034
-20 C (-4 F): Days with min283720104
-30 C (-22 F): Days with min8620111
20 C (68 F): Tropical nights (min13720257

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2000.

Download the Data

  • Data for Oulu Vihreasaari 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).