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Built 2026-10-19 (19 October 2026)

Siikajoki Revonlahti Threshold Days by Year (FIE00145627)

12 fixed thresholds counted per year at Siikajoki Revonlahti (FIE00145627): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Siikajoki Revonlahti Thresholds

  • Siikajoki Revonlahti: nights with a minimum temperature at or below 0 C (32 F) in 68 years, most in 1976 with 227.
  • Siikajoki Revonlahti: nights with a minimum temperature at or below -10 C (14 F) in 68 years, most in 1985 with 110.
  • Siikajoki Revonlahti: nights with a minimum temperature at or below -20 C (-4 F) in 68 years, most in 1985 with 61.
  • Siikajoki Revonlahti: days with 10 mm (0.39 in) or more of precipitation in 68 years, most in 2020 with 18.
  • 12 fixed thresholds have at least one qualifying day at Siikajoki Revonlahti.
18 years with a qualifying day
Days at or above 30 C (86 F) per year at Siikajoki Revonlahti Days per year at Siikajoki Revonlahti with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 6 in 2018. 02461960: 11963: 11970: 11972: 11988: 11994: 21999: 12000: 22003: 32006: 12010: 22011: 32014: 12018: 62019: 22021: 32022: 22025: 1196019701988199920032010201420192022
Days per year at Siikajoki Revonlahti with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 6 in 2018.
Days at or above 30 C (86 F) per year at Siikajoki Revonlahti
YearDaysDecade average
196011
196311
197011
197211
198811
199421.5
199911.5
200022
200332
200612
201022.8
201132.8
201412.8
201862.8
201922.8
202132
202222
202512
First to last qualifying date each year at Siikajoki Revonlahti For each year, a bar from the first to the last day at Siikajoki Revonlahti meeting 30 C (86 F). 1960: 28 July 1960 to 28 July 19601963: 2 August 1963 to 2 August 19631970: 20 July 1970 to 20 July 19701972: 2 July 1972 to 2 July 19721988: 19 July 1988 to 19 July 19881994: 27 July 1994 to 28 July 19941999: 15 July 1999 to 15 July 19992000: 29 June 2000 to 30 June 20002003: 17 July 2003 to 1 August 20032006: 13 June 2006 to 13 June 20062010: 13 July 2010 to 29 July 20102011: 8 June 2011 to 10 June 20112014: 14 July 2014 to 14 July 20142018: 17 July 2018 to 1 August 20182019: 7 June 2019 to 26 July 20192021: 4 July 2021 to 11 July 20212022: 30 June 2022 to 1 July 20222025: 31 July 2025 to 31 July 2025196019721999200620142021JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Siikajoki Revonlahti meeting 30 C (86 F).
First to last qualifying date each year at Siikajoki Revonlahti
YearFirst dateLast date
19601960-07-281960-07-28
19631963-08-021963-08-02
19701970-07-201970-07-20
19721972-07-021972-07-02
19881988-07-191988-07-19
19941994-07-271994-07-28
19991999-07-151999-07-15
20002000-06-292000-06-30
20032003-07-172003-08-01
20062006-06-132006-06-13
20102010-07-132010-07-29
20112011-06-082011-06-10
20142014-07-142014-07-14
20182018-07-172018-08-01
20192019-06-072019-07-26
20212021-07-042021-07-11
20222022-06-302022-07-01
20252025-07-312025-07-31

Every Fixed Threshold

Fixed thresholds at Siikajoki Revonlahti
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days18620181
90 F (32.2 C): Days1120101
0 C (32 F): Ice days (max67135201058
0 C (32 F): Frost days (min682271976112
-10 C (14 F): Days with min68110198553
-20 C (-4 F): Days with min6861198527
-30 C (-22 F): Days with min4122198511
-40 C (-40 F): Days with min1219662
20 C (68 F): Tropical nights (min3120101
10 mm (0.39 in): Days with 10 mm or more rain6818202014
25 mm (0.98 in): Days with 25 mm or more rain38419922
50 mm (1.97 in): Days with 50 mm or more rain4120121

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 Siikajoki Revonlahti 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).