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Built 2026-10-19 (19 October 2026)

Ontonagon 6 SE Threshold Days by Year (USC00206220)

18 fixed thresholds counted per year at Ontonagon 6 SE (USC00206220): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ontonagon 6 SE Thresholds

  • Ontonagon 6 SE: nights with a minimum temperature at or below 0 C (32 F) in 36 years, most in 1997 with 195.
  • Ontonagon 6 SE: nights with a minimum temperature at or below -10 C (14 F) in 36 years, most in 1978 with 99.
  • Ontonagon 6 SE: nights with a minimum temperature at or below -20 C (-4 F) in 36 years, most in 1979 with 34.
  • Ontonagon 6 SE: days with 10 mm (0.39 in) or more of precipitation in 36 years, most in 1985 with 34.
  • 18 fixed thresholds have at least one qualifying day at Ontonagon 6 SE.
35 years with a qualifying day
Days at or above 30 C (86 F) per year at Ontonagon 6 SE Days per year at Ontonagon 6 SE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 41 in 1988. 02040601978: 131979: 41980: 81981: 51982: 41983: 321984: 81985: 51986: 121987: 201988: 411989: 191990: 101991: 191992: 61993: 61995: 261996: 61997: 81998: 181999: 202000: 102001: 202002: 182003: 122004: 112005: 282006: 182007: 332008: 122009: 82010: 252011: 222012: 292013: 15197819821986199019951999200320072011
Days per year at Ontonagon 6 SE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 41 in 1988.
Days at or above 30 C (86 F) per year at Ontonagon 6 SE
YearDaysDecade average
1978138.5
197948.5
1980815.4
1981515.4
1982415.4
19833215.4
1984815.4
1985515.4
19861215.4
19872015.4
19884115.4
19891915.4
19901013.2
19911913.2
1992613.2
1993613.2
19952613.2
1996613.2
1997813.2
19981813.2
19992013.2
20001017
20012017
20021817
20031217
20041117
20052817
20061817
20073317
20081217
2009817
20102522.8
20112222.8
20122922.8
20131522.8
First to last qualifying date each year at Ontonagon 6 SE For each year, a bar from the first to the last day at Ontonagon 6 SE meeting 30 C (86 F). 1978: 26 May 1978 to 6 September 19781979: 11 July 1979 to 23 July 19791980: 22 April 1980 to 14 July 19801981: 6 July 1981 to 11 July 19811982: 5 July 1982 to 11 September 19821983: 11 June 1983 to 8 September 19831984: 6 June 1984 to 28 August 19841985: 26 June 1985 to 19 September 19851986: 29 May 1986 to 16 August 19861987: 18 April 1987 to 27 September 19871988: 28 May 1988 to 16 August 19881989: 20 June 1989 to 12 August 19891990: 24 April 1990 to 13 September 19901991: 15 May 1991 to 30 August 19911992: 10 May 1992 to 23 August 19921993: 9 May 1993 to 26 August 19931995: 15 June 1995 to 12 October 19951996: 27 June 1996 to 6 September 19961997: 22 June 1997 to 24 July 19971998: 14 May 1998 to 10 September 19981999: 29 May 1999 to 5 September 19992000: 5 May 2000 to 18 September 20002001: 14 June 2001 to 6 September 20012002: 16 April 2002 to 9 August 20022003: 21 June 2003 to 11 September 20032004: 12 May 2004 to 13 September 20042005: 10 June 2005 to 11 September 20052006: 27 May 2006 to 16 August 20062007: 10 May 2007 to 7 October 20072008: 25 June 2008 to 3 September 20082009: 20 May 2009 to 15 August 20092010: 23 May 2010 to 31 August 20102011: 3 June 2011 to 8 October 20112012: 19 May 2012 to 5 September 20122013: 30 May 2013 to 25 August 20131978198319881993199920042009JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Ontonagon 6 SE meeting 30 C (86 F).
First to last qualifying date each year at Ontonagon 6 SE
YearFirst dateLast date
19781978-05-261978-09-06
19791979-07-111979-07-23
19801980-04-221980-07-14
19811981-07-061981-07-11
19821982-07-051982-09-11
19831983-06-111983-09-08
19841984-06-061984-08-28
19851985-06-261985-09-19
19861986-05-291986-08-16
19871987-04-181987-09-27
19881988-05-281988-08-16
19891989-06-201989-08-12
19901990-04-241990-09-13
19911991-05-151991-08-30
19921992-05-101992-08-23
19931993-05-091993-08-26
19951995-06-151995-10-12
19961996-06-271996-09-06
19971997-06-221997-07-24
19981998-05-141998-09-10
19991999-05-291999-09-05
20002000-05-052000-09-18
20012001-06-142001-09-06
20022002-04-162002-08-09
20032003-06-212003-09-11
20042004-05-122004-09-13
20052005-06-102005-09-11
20062006-05-272006-08-16
20072007-05-102007-10-07
20082008-06-252008-09-03
20092009-05-202009-08-15
20102010-05-232010-08-31
20112011-06-032011-10-08
20122012-05-192012-09-05
20132013-05-302013-08-25

Every Fixed Threshold

Fixed thresholds at Ontonagon 6 SE
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3541198815
35 C (95 F): Days13619881
90 F (32.2 C): Days322119886
100 F (37.8 C): Days2219881
0 C (32 F): Ice days (max35102199690
0 C (32 F): Frost days (min361951997183
-10 C (14 F): Days with min3699197883
-20 C (-4 F): Days with min3634197920
-30 C (-22 F): Days with min18919961
-40 C (-40 F): Days with min2119791
20 C (68 F): Tropical nights (min311120107
25 C (77 F): Days with min3119971
10 mm (0.39 in): Days with 10 mm or more rain3634198533
25 mm (0.98 in): Days with 25 mm or more rain36819823
50 mm (1.97 in): Days with 50 mm or more rain12219911
10 cm (3.9 in): Days with 10 cm or more snowfall3339198511
25 cm (9.8 in): Days with 25 cm or more snowfall21420021
50 cm (19.7 in): Days with 50 cm or more snowfall1119961

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1978.

Download the Data

  • Data for Ontonagon 6 SE 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).