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Built 2026-10-19 (19 October 2026)

Sullivan 3 SE - WFO Mkx Threshold Days by Year (USC00478316)

18 fixed thresholds counted per year at Sullivan 3 SE - WFO Mkx (USC00478316): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sullivan 3 SE - WFO Mkx Thresholds

  • Sullivan 3 SE - WFO Mkx: days with 10 mm (0.39 in) or more of precipitation in 31 years, most in 2018 with 42.
  • Sullivan 3 SE - WFO Mkx: days with 25 mm (0.98 in) or more of precipitation in 31 years, most in 2008 with 12.
  • Sullivan 3 SE - WFO Mkx: days with a maximum temperature at or above 30 C (86 F) in 30 years, most in 1998 with 60.
  • Sullivan 3 SE - WFO Mkx: days with a maximum temperature at or above 90 F (32.2 C) in 30 years, most in 1995 with 25.
  • 18 fixed thresholds have at least one qualifying day at Sullivan 3 SE - WFO Mkx.
30 years with a qualifying day
Days at or above 30 C (86 F) per year at Sullivan 3 SE - WFO Mkx Days per year at Sullivan 3 SE - WFO Mkx with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 60 in 1998. 02040601995: 571996: 381997: 341998: 601999: 312000: 142001: 382002: 412003: 292004: 72005: 462006: 232007: 372008: 152009: 112010: 282011: 392014: 142015: 142016: 272017: 192018: 252019: 142020: 222021: 442022: 252023: 232024: 232025: 232026: 241995199820012004200720102015201820212024
Days per year at Sullivan 3 SE - WFO Mkx with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 60 in 1998.
Days at or above 30 C (86 F) per year at Sullivan 3 SE - WFO Mkx
YearDaysDecade average
19955744
19963844
19973444
19986044
19993144
20001426.1
20013826.1
20024126.1
20032926.1
2004726.1
20054626.1
20062326.1
20073726.1
20081526.1
20091126.1
20102822.5
20113922.5
20141422.5
20151422.5
20162722.5
20171922.5
20182522.5
20191422.5
20202226.3
20214426.3
20222526.3
20232326.3
20242326.3
20252326.3
20262426.3
First to last qualifying date each year at Sullivan 3 SE - WFO Mkx For each year, a bar from the first to the last day at Sullivan 3 SE - WFO Mkx meeting 30 C (86 F). 1995: 6 June 1995 to 13 October 19951996: 18 May 1996 to 11 September 19961997: 11 June 1997 to 9 October 19971998: 15 May 1998 to 27 September 19981999: 30 May 1999 to 6 September 19992000: 2 June 2000 to 13 September 20002001: 16 May 2001 to 4 September 20012002: 16 April 2002 to 10 September 20022003: 16 April 2003 to 10 September 20032004: 8 June 2004 to 13 September 20042005: 8 June 2005 to 5 October 20052006: 29 May 2006 to 24 August 20062007: 15 May 2007 to 8 October 20072008: 8 June 2008 to 3 September 20082009: 23 June 2009 to 16 August 20092010: 24 May 2010 to 10 October 20102011: 23 May 2011 to 13 September 20112014: 8 May 2014 to 31 August 20142015: 13 July 2015 to 6 September 20152016: 10 June 2016 to 6 September 20162017: 10 June 2017 to 26 September 20172018: 24 May 2018 to 17 September 20182019: 27 June 2019 to 5 August 20192020: 2 June 2020 to 28 August 20202021: 1 May 2021 to 1 October 20212022: 10 May 2022 to 1 September 20222023: 30 May 2023 to 5 September 20232024: 12 June 2024 to 21 September 20242025: 16 May 2025 to 4 October 20252026: 27 May 2026 to 13 October 202619951999200320072011201720212025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Sullivan 3 SE - WFO Mkx meeting 30 C (86 F).
First to last qualifying date each year at Sullivan 3 SE - WFO Mkx
YearFirst dateLast date
19951995-06-061995-10-13
19961996-05-181996-09-11
19971997-06-111997-10-09
19981998-05-151998-09-27
19991999-05-301999-09-06
20002000-06-022000-09-13
20012001-05-162001-09-04
20022002-04-162002-09-10
20032003-04-162003-09-10
20042004-06-082004-09-13
20052005-06-082005-10-05
20062006-05-292006-08-24
20072007-05-152007-10-08
20082008-06-082008-09-03
20092009-06-232009-08-16
20102010-05-242010-10-10
20112011-05-232011-09-13
20142014-05-082014-08-31
20152015-07-132015-09-06
20162016-06-102016-09-06
20172017-06-102017-09-26
20182018-05-242018-09-17
20192019-06-272019-08-05
20202020-06-022020-08-28
20212021-05-012021-10-01
20222022-05-102022-09-01
20232023-05-302023-09-05
20242024-06-122024-09-21
20252025-05-162025-10-04
20262026-05-272026-10-13

Every Fixed Threshold

Fixed thresholds at Sullivan 3 SE - WFO Mkx
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3060199824
35 C (95 F): Days141119952
40 C (104 F): Days1119951
90 F (32.2 C): Days302519959
100 F (37.8 C): Days1319953
0 C (32 F): Ice days (max3086201437
0 C (32 F): Frost days (min30170201891
-10 C (14 F): Days with min3081201435
-20 C (-4 F): Days with min2928201412
-30 C (-22 F): Days with min3519962
20 C (68 F): Tropical nights (min3028199510
25 C (77 F): Days with min2219951
10 mm (0.39 in): Days with 10 mm or more rain3142201828
25 mm (0.98 in): Days with 25 mm or more rain311220086
50 mm (1.97 in): Days with 50 mm or more rain27620081
100 mm (3.94 in): Days with 100 mm or more rain4120071
10 cm (3.9 in): Days with 10 cm or more snowfall23720072
25 cm (9.8 in): Days with 25 cm or more snowfall7220081

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1995.

Download the Data

  • Data for Sullivan 3 SE - WFO Mkx 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 (2026-10-17).