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Built 2026-10-19 (19 October 2026)

Grantsburg Threshold Days by Year (USW00014995)

19 fixed thresholds counted per year at Grantsburg (USW00014995): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Grantsburg Thresholds

  • Grantsburg: days with a maximum temperature at or below 0 C (32 F) in 70 years, most in 1955 with 121.
  • Grantsburg: days with a maximum temperature at or above 30 C (86 F) in 69 years, most in 2007 with 52.
  • Grantsburg: days with 10 mm (0.39 in) or more of precipitation in 68 years, most in 1968 with 35.
  • Grantsburg: days with 25 mm (0.98 in) or more of precipitation in 68 years, most in 2014 with 13.
  • 19 fixed thresholds have at least one qualifying day at Grantsburg.
69 years with a qualifying day
Days at or above 30 C (86 F) per year at Grantsburg Days per year at Grantsburg with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 52 in 2007. 02040601951: 81952: 261953: 281954: 111955: 351956: 121957: 171958: 131959: 351960: 251961: 291963: 331964: 301965: 111966: 331967: 121968: 221969: 331970: 421971: 101972: 71975: 81976: 421977: 211978: 191979: 81980: 201981: 61982: 71983: 161984: 81985: 21988: 391989: 301990: 151991: 211992: 101993: 111994: 111995: 241996: 71997: 181998: 241999: 272000: 232001: 382002: 312003: 322004: 122005: 322006: 382007: 522008: 172009: 152010: 292011: 282012: 502013: 332014: 142015: 222016: 232018: 262019: 132020: 132021: 322022: 112023: 252024: 82025: 141951195819661975198219911998200520122020
Days per year at Grantsburg with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 52 in 2007.
Days at or above 30 C (86 F) per year at Grantsburg
YearDaysDecade average
1951820.6
19522620.6
19532820.6
19541120.6
19553520.6
19561220.6
19571720.6
19581320.6
19593520.6
19602525.3
19612925.3
19633325.3
19643025.3
19651125.3
19663325.3
19671225.3
19682225.3
19693325.3
19704219.6
19711019.6
1972719.6
1975819.6
19764219.6
19772119.6
19781919.6
1979819.6
19802016
1981616
1982716
19831616
1984816
1985216
19883916
19893016
19901516.8
19912116.8
19921016.8
19931116.8
19941116.8
19952416.8
1996716.8
19971816.8
19982416.8
19992716.8
20002329
20013829
20023129
20033229
20041229
20053229
20063829
20075229
20081729
20091529
20102926.4
20112826.4
20125026.4
20133326.4
20141426.4
20152226.4
20162326.4
20182626.4
20191326.4
20201317.2
20213217.2
20221117.2
20232517.2
2024817.2
20251417.2
First to last qualifying date each year at Grantsburg For each year, a bar from the first to the last day at Grantsburg meeting 30 C (86 F). 1951: 7 July 1951 to 29 July 19511952: 27 April 1952 to 13 September 19521953: 7 May 1953 to 2 October 19531954: 9 June 1954 to 1 September 19541955: 2 May 1955 to 18 September 19551956: 9 June 1956 to 28 August 19561957: 20 June 1957 to 31 August 19571958: 29 May 1958 to 29 August 19581959: 1 May 1959 to 8 September 19591960: 27 June 1960 to 6 September 19601961: 5 June 1961 to 9 September 19611963: 3 June 1963 to 10 August 19631964: 18 May 1964 to 27 August 19641965: 27 June 1965 to 14 August 19651966: 20 June 1966 to 1 September 19661967: 9 July 1967 to 15 August 19671968: 4 June 1968 to 24 August 19681969: 27 May 1969 to 12 September 19691970: 29 April 1970 to 6 September 19701971: 12 June 1971 to 2 September 19711972: 21 July 1972 to 30 August 19721975: 21 May 1975 to 1 August 19751976: 7 June 1976 to 13 September 19761977: 11 April 1977 to 25 July 19771978: 26 May 1978 to 9 September 19781979: 18 May 1979 to 22 July 19791980: 22 April 1980 to 7 August 19801981: 5 July 1981 to 14 August 19811982: 5 July 1982 to 7 August 19821983: 26 June 1983 to 3 September 19831984: 27 June 1984 to 29 August 19841985: 9 June 1985 to 8 July 19851988: 1 June 1988 to 17 August 19881989: 17 May 1989 to 12 August 19891990: 24 April 1990 to 2 September 19901991: 7 April 1991 to 31 August 19911992: 2 May 1992 to 3 October 19921993: 12 June 1993 to 27 August 19931994: 20 May 1994 to 26 August 19941995: 17 June 1995 to 4 September 19951996: 13 June 1996 to 7 August 19961997: 1 June 1997 to 3 August 19971998: 15 May 1998 to 20 September 19981999: 29 May 1999 to 4 September 19992000: 5 May 2000 to 19 September 20002001: 16 May 2001 to 3 September 20012002: 16 April 2002 to 9 September 20022003: 15 April 2003 to 10 September 20032004: 8 June 2004 to 5 September 20042005: 19 June 2005 to 12 September 20052006: 28 May 2006 to 6 September 20062007: 30 April 2007 to 7 October 20072008: 25 June 2008 to 2 September 20082009: 21 May 2009 to 16 September 20092010: 25 May 2010 to 1 September 20102011: 7 June 2011 to 6 October 20112012: 15 May 2012 to 12 September 20122013: 15 May 2013 to 8 September 20132014: 27 May 2014 to 25 August 20142015: 29 May 2015 to 6 September 20152016: 7 May 2016 to 30 August 20162018: 17 May 2018 to 17 September 20182019: 7 June 2019 to 5 August 20192020: 1 July 2020 to 25 July 20202021: 1 May 2021 to 19 September 20212022: 14 June 2022 to 5 August 20222023: 31 May 2023 to 1 October 20232024: 14 July 2024 to 27 August 20242025: 11 May 2025 to 4 October 202519511960197019811992200120102020JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Grantsburg meeting 30 C (86 F).
First to last qualifying date each year at Grantsburg
YearFirst dateLast date
19511951-07-071951-07-29
19521952-04-271952-09-13
19531953-05-071953-10-02
19541954-06-091954-09-01
19551955-05-021955-09-18
19561956-06-091956-08-28
19571957-06-201957-08-31
19581958-05-291958-08-29
19591959-05-011959-09-08
19601960-06-271960-09-06
19611961-06-051961-09-09
19631963-06-031963-08-10
19641964-05-181964-08-27
19651965-06-271965-08-14
19661966-06-201966-09-01
19671967-07-091967-08-15
19681968-06-041968-08-24
19691969-05-271969-09-12
19701970-04-291970-09-06
19711971-06-121971-09-02
19721972-07-211972-08-30
19751975-05-211975-08-01
19761976-06-071976-09-13
19771977-04-111977-07-25
19781978-05-261978-09-09
19791979-05-181979-07-22
19801980-04-221980-08-07
19811981-07-051981-08-14
19821982-07-051982-08-07
19831983-06-261983-09-03
19841984-06-271984-08-29
19851985-06-091985-07-08
19881988-06-011988-08-17
19891989-05-171989-08-12
19901990-04-241990-09-02
19911991-04-071991-08-31
19921992-05-021992-10-03
19931993-06-121993-08-27
19941994-05-201994-08-26
19951995-06-171995-09-04
19961996-06-131996-08-07
19971997-06-011997-08-03
19981998-05-151998-09-20
19991999-05-291999-09-04
20002000-05-052000-09-19
20012001-05-162001-09-03
20022002-04-162002-09-09
20032003-04-152003-09-10
20042004-06-082004-09-05
20052005-06-192005-09-12
20062006-05-282006-09-06
20072007-04-302007-10-07
20082008-06-252008-09-02
20092009-05-212009-09-16
20102010-05-252010-09-01
20112011-06-072011-10-06
20122012-05-152012-09-12
20132013-05-152013-09-08
20142014-05-272014-08-25
20152015-05-292015-09-06
20162016-05-072016-08-30
20182018-05-172018-09-17
20192019-06-072019-08-05
20202020-07-012020-07-25
20212021-05-012021-09-19
20222022-06-142022-08-05
20232023-05-312023-10-01
20242024-07-142024-08-27
20252025-05-112025-10-04

Every Fixed Threshold

Fixed thresholds at Grantsburg
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days6952200714
35 C (95 F): Days32919641
40 C (104 F): Days1120061
90 F (32.2 C): Days633120075
100 F (37.8 C): Days4219881
0 C (32 F): Ice days (max70121195540
0 C (32 F): Frost days (min64196197685
-10 C (14 F): Days with min64114195547
-20 C (-4 F): Days with min6457195516
-30 C (-22 F): Days with min552019792
-40 C (-40 F): Days with min4219962
20 C (68 F): Tropical nights (min551420018
25 C (77 F): Days with min5119641
10 mm (0.39 in): Days with 10 mm or more rain6835196811
25 mm (0.98 in): Days with 25 mm or more rain681320141
50 mm (1.97 in): Days with 50 mm or more rain50419682
100 mm (3.94 in): Days with 100 mm or more rain6220051
10 cm (3.9 in): Days with 10 cm or more snowfall57719691
25 cm (9.8 in): Days with 25 cm or more snowfall11219821

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1951.

Download the Data

  • Data for Grantsburg 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 (2026-10-12).