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

Overkalix-Svartbyn Threshold Days by Year (SWE00140694)

10 fixed thresholds counted per year at Overkalix-Svartbyn (SWE00140694): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Overkalix-Svartbyn Thresholds

  • Overkalix-Svartbyn: days with 10 mm (0.39 in) or more of precipitation in 28 years, most in 1966 with 17.
  • Overkalix-Svartbyn: days with a maximum temperature at or below 0 C (32 F) in 27 years, most in 1980 with 149.
  • Overkalix-Svartbyn: nights with a minimum temperature at or below 0 C (32 F) in 27 years, most in 1968 with 241.
  • Overkalix-Svartbyn: nights with a minimum temperature at or below -10 C (14 F) in 27 years, most in 1980 with 133.
  • 10 fixed thresholds have at least one qualifying day at Overkalix-Svartbyn.
8 years with a qualifying day
Days at or above 30 C (86 F) per year at Overkalix-Svartbyn Days per year at Overkalix-Svartbyn with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 4 in 1972. 012341963: 11966: 21968: 11969: 11970: 21971: 21972: 41980: 119631966196819691970197119721980
Days per year at Overkalix-Svartbyn with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 4 in 1972.
Days at or above 30 C (86 F) per year at Overkalix-Svartbyn
YearDaysDecade average
196311.3
196621.3
196811.3
196911.3
197022.7
197122.7
197242.7
198011
First to last qualifying date each year at Overkalix-Svartbyn For each year, a bar from the first to the last day at Overkalix-Svartbyn meeting 30 C (86 F). 1963: 31 July 1963 to 31 July 19631966: 19 June 1966 to 20 June 19661968: 3 July 1968 to 3 July 19681969: 27 June 1969 to 27 June 19691970: 5 June 1970 to 20 July 19701971: 31 May 1971 to 1 June 19711972: 29 June 1972 to 4 July 19721980: 31 July 1980 to 31 July 198019631966196819691970197119721980JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Overkalix-Svartbyn meeting 30 C (86 F).
First to last qualifying date each year at Overkalix-Svartbyn
YearFirst dateLast date
19631963-07-311963-07-31
19661966-06-191966-06-20
19681968-07-031968-07-03
19691969-06-271969-06-27
19701970-06-051970-07-20
19711971-05-311971-06-01
19721972-06-291972-07-04
19801980-07-311980-07-31

Every Fixed Threshold

Fixed thresholds at Overkalix-Svartbyn
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days8419721
90 F (32.2 C): Days2119661
0 C (32 F): Ice days (max271491980114
0 C (32 F): Frost days (min272411968210
-10 C (14 F): Days with min27133198094
-20 C (-4 F): Days with min2787198543
-30 C (-22 F): Days with min253819858
-40 C (-40 F): Days with min1219662
10 mm (0.39 in): Days with 10 mm or more rain2817196612
25 mm (0.98 in): Days with 25 mm or more rain15219681

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1963.

Download the Data

  • Data for Overkalix-Svartbyn 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).