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

Siljansfors Threshold Days by Year (SWE00139490)

11 fixed thresholds counted per year at Siljansfors (SWE00139490): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Siljansfors Thresholds

  • Siljansfors: days with 10 mm (0.39 in) or more of precipitation in 68 years, most in 1944 with 36.
  • Siljansfors: days with 25 mm (0.98 in) or more of precipitation in 62 years, most in 1944 with 9.
  • Siljansfors: nights with a minimum temperature at or below 0 C (32 F) in 47 years, most in 1985 with 218.
  • Siljansfors: nights with a minimum temperature at or below -10 C (14 F) in 47 years, most in 1985 with 102.
  • 11 fixed thresholds have at least one qualifying day at Siljansfors.
9 years with a qualifying day
Days at or above 30 C (86 F) per year at Siljansfors Days per year at Siljansfors with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 7 in 1982. 024681958: 11968: 11970: 21975: 51977: 11982: 71983: 21986: 21988: 1195819681970197519771982198319861988
Days per year at Siljansfors with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 7 in 1982.
Days at or above 30 C (86 F) per year at Siljansfors
YearDaysDecade average
195811
196811
197022.7
197552.7
197712.7
198273
198323
198623
198813
First to last qualifying date each year at Siljansfors For each year, a bar from the first to the last day at Siljansfors meeting 30 C (86 F). 1958: 3 July 1958 to 3 July 19581968: 2 July 1968 to 2 July 19681970: 19 June 1970 to 20 June 19701975: 5 August 1975 to 10 August 19751977: 15 June 1977 to 15 June 19771982: 31 July 1982 to 6 August 19821983: 10 July 1983 to 11 July 19831986: 25 June 1986 to 26 June 19861988: 27 June 1988 to 27 June 198819581970197719831988JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Siljansfors meeting 30 C (86 F).
First to last qualifying date each year at Siljansfors
YearFirst dateLast date
19581958-07-031958-07-03
19681968-07-021968-07-02
19701970-06-191970-06-20
19751975-08-051975-08-10
19771977-06-151977-06-15
19821982-07-311982-08-06
19831983-07-101983-07-11
19861986-06-251986-06-26
19881988-06-271988-06-27

Every Fixed Threshold

Fixed thresholds at Siljansfors
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days9719821
90 F (32.2 C): Days3319823
0 C (32 F): Ice days (max34107196837
0 C (32 F): Frost days (min472181985181
-10 C (14 F): Days with min47102198531
-20 C (-4 F): Days with min474819691
-30 C (-22 F): Days with min28919479
-40 C (-40 F): Days with min1119871
10 mm (0.39 in): Days with 10 mm or more rain6836194421
25 mm (0.98 in): Days with 25 mm or more rain62919444
50 mm (1.97 in): Days with 50 mm or more rain15219391

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1958.

Download the Data

  • Data for Siljansfors 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).