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

Valla Threshold Days by Year (SWE00138726)

9 fixed thresholds counted per year at Valla (SWE00138726): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Valla Thresholds

  • Valla: days with 10 mm (0.39 in) or more of precipitation in 40 years, most in 2012 with 25.
  • Valla: days with a maximum temperature at or below 0 C (32 F) in 34 years, most in 2010 with 98.
  • Valla: nights with a minimum temperature at or below 0 C (32 F) in 34 years, most in 1985 with 173.
  • Valla: nights with a minimum temperature at or below -10 C (14 F) in 34 years, most in 1985 with 57.
  • 9 fixed thresholds have at least one qualifying day at Valla.
15 years with a qualifying day
Days at or above 30 C (86 F) per year at Valla Days per year at Valla with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 12 in 1994. 0510151982: 71983: 41986: 11989: 41991: 31994: 121995: 21999: 62001: 42005: 32006: 42007: 32008: 32009: 12010: 519821986199119952001200620082010
Days per year at Valla with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 12 in 1994.
Days at or above 30 C (86 F) per year at Valla
YearDaysDecade average
198274
198344
198614
198944
199135.8
1994125.8
199525.8
199965.8
200143
200533
200643
200733
200833
200913
201055
First to last qualifying date each year at Valla For each year, a bar from the first to the last day at Valla meeting 30 C (86 F). 1982: 5 June 1982 to 8 August 19821983: 9 July 1983 to 9 August 19831986: 26 June 1986 to 26 June 19861989: 5 July 1989 to 24 July 19891991: 6 July 1991 to 8 July 19911994: 12 July 1994 to 5 August 19941995: 13 August 1995 to 18 August 19951999: 10 July 1999 to 4 August 19992001: 4 July 2001 to 7 July 20012005: 8 July 2005 to 12 July 20052006: 12 June 2006 to 7 August 20062007: 8 June 2007 to 10 June 20072008: 26 July 2008 to 28 July 20082009: 2 July 2009 to 2 July 20092010: 3 July 2010 to 13 July 201019821986199119952001200620082010JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Valla meeting 30 C (86 F).
First to last qualifying date each year at Valla
YearFirst dateLast date
19821982-06-051982-08-08
19831983-07-091983-08-09
19861986-06-261986-06-26
19891989-07-051989-07-24
19911991-07-061991-07-08
19941994-07-121994-08-05
19951995-08-131995-08-18
19991999-07-101999-08-04
20012001-07-042001-07-07
20052005-07-082005-07-12
20062006-06-122006-08-07
20072007-06-082007-06-10
20082008-07-262008-07-28
20092009-07-022009-07-02
20102010-07-032010-07-13

Every Fixed Threshold

Fixed thresholds at Valla
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days151219945
90 F (32.2 C): Days4419941
0 C (32 F): Ice days (max3498201042
0 C (32 F): Frost days (min341731985141
-10 C (14 F): Days with min3457198525
-20 C (-4 F): Days with min212019851
10 mm (0.39 in): Days with 10 mm or more rain4025201211
25 mm (0.98 in): Days with 25 mm or more rain29319782
50 mm (1.97 in): Days with 50 mm or more rain3119901

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1982.

Download the Data

  • Data for Valla 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).