Built 2026-10-19 (19 October 2026)

Grums Threshold Days by Year (SWE00138888)

3 fixed thresholds counted per year at Grums (SWE00138888): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Grums Thresholds

  • Grums: days with 10 mm (0.39 in) or more of precipitation in 32 years, most in 1999 with 34.
  • Grums: days with 25 mm (0.98 in) or more of precipitation in 28 years, most in 2000 with 6.
  • Grums: days with 50 mm (1.97 in) or more of precipitation in 3 years, most in 2010 with 1.
  • 3 fixed thresholds have at least one qualifying day at Grums.
32 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Grums Days per year at Grums with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 34 in 1999. 0102030401988: 261989: 111990: 211991: 141992: 161993: 171994: 191995: 231996: 181997: 201998: 211999: 342000: 312001: 212002: 242003: 202004: 222005: 122006: 182007: 192008: 242009: 272010: 232011: 242012: 262013: 182014: 282015: 242016: 162017: 192018: 182019: 2319881992199620002004200820122016
Days per year at Grums with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 34 in 1999.
Days with 10 mm (0.39 in) or more of precipitation per year at Grums
YearDaysDecade average
19882618.5
19891118.5
19902120.3
19911420.3
19921620.3
19931720.3
19941920.3
19952320.3
19961820.3
19972020.3
19982120.3
19993420.3
20003121.8
20012121.8
20022421.8
20032021.8
20042221.8
20051221.8
20061821.8
20071921.8
20082421.8
20092721.8
20102321.9
20112421.9
20122621.9
20131821.9
20142821.9
20152421.9
20161621.9
20171921.9
20181821.9
20192321.9
First to last qualifying date each year at Grums For each year, a bar from the first to the last day at Grums meeting 10 mm (0.39 in). 1988: 2 January 1988 to 23 December 19881989: 13 March 1989 to 17 December 19891990: 28 January 1990 to 24 November 19901991: 9 January 1991 to 3 November 19911992: 1 April 1992 to 25 November 19921993: 23 January 1993 to 23 December 19931994: 4 January 1994 to 16 December 19941995: 31 January 1995 to 8 November 19951996: 16 February 1996 to 2 December 19961997: 18 February 1997 to 1 December 19971998: 19 January 1998 to 4 December 19981999: 25 January 1999 to 24 December 19992000: 16 April 2000 to 28 December 20002001: 5 January 2001 to 1 December 20012002: 24 January 2002 to 28 December 20022003: 11 April 2003 to 27 December 20032004: 6 January 2004 to 25 December 20042005: 7 April 2005 to 29 December 20052006: 28 February 2006 to 5 December 20062007: 20 January 2007 to 1 December 20072008: 5 January 2008 to 2 December 20082009: 18 January 2009 to 25 December 20092010: 2 February 2010 to 11 November 20102011: 8 January 2011 to 31 December 20112012: 1 January 2012 to 24 December 20122013: 12 April 2013 to 23 December 20132014: 2 January 2014 to 23 November 20142015: 10 January 2015 to 27 December 20152016: 9 January 2016 to 20 November 20162017: 27 February 2017 to 25 December 20172018: 15 January 2018 to 6 December 20182019: 16 January 2019 to 6 December 201919881992199620002004200820122016JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Grums meeting 10 mm (0.39 in).
First to last qualifying date each year at Grums
YearFirst dateLast date
19881988-01-021988-12-23
19891989-03-131989-12-17
19901990-01-281990-11-24
19911991-01-091991-11-03
19921992-04-011992-11-25
19931993-01-231993-12-23
19941994-01-041994-12-16
19951995-01-311995-11-08
19961996-02-161996-12-02
19971997-02-181997-12-01
19981998-01-191998-12-04
19991999-01-251999-12-24
20002000-04-162000-12-28
20012001-01-052001-12-01
20022002-01-242002-12-28
20032003-04-112003-12-27
20042004-01-062004-12-25
20052005-04-072005-12-29
20062006-02-282006-12-05
20072007-01-202007-12-01
20082008-01-052008-12-02
20092009-01-182009-12-25
20102010-02-022010-11-11
20112011-01-082011-12-31
20122012-01-012012-12-24
20132013-04-122013-12-23
20142014-01-022014-11-23
20152015-01-102015-12-27
20162016-01-092016-11-20
20172017-02-272017-12-25
20182018-01-152018-12-06
20192019-01-162019-12-06

Every Fixed Threshold

Fixed thresholds at Grums
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3234199923
25 mm (0.98 in): Days with 25 mm or more rain28620001
50 mm (1.97 in): Days with 50 mm or more rain3120101

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1988.

Download the Data

  • Data for Grums 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).