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Built 2026-10-19 (19 October 2026)

Sullivan 3S Threshold Days by Year (USC00118389)

16 fixed thresholds counted per year at Sullivan 3S (USC00118389): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sullivan 3S Thresholds

  • Sullivan 3S: days with 10 mm (0.39 in) or more of precipitation in 28 years, most in 2009 with 49.
  • Sullivan 3S: days with 25 mm (0.98 in) or more of precipitation in 27 years, most in 2008 with 20.
  • Sullivan 3S: days with 50 mm (1.97 in) or more of precipitation in 25 years, most in 1949 with 5.
  • Sullivan 3S: days with a maximum temperature at or above 30 C (86 F) in 18 years, most in 2018 with 89.
  • 16 fixed thresholds have at least one qualifying day at Sullivan 3S.
18 years with a qualifying day
Days at or above 30 C (86 F) per year at Sullivan 3S Days per year at Sullivan 3S with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 89 in 2018. 02550751002001: 472002: 642003: 372004: 242005: 742006: 482007: 612008: 302009: 192010: 612011: 582016: 672017: 502018: 892019: 702020: 692021: 642022: 49200120032005200720092011201720192021
Days per year at Sullivan 3S with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 89 in 2018.
Days at or above 30 C (86 F) per year at Sullivan 3S
YearDaysDecade average
20014744.9
20026444.9
20033744.9
20042444.9
20057444.9
20064844.9
20076144.9
20083044.9
20091944.9
20106165.8
20115865.8
20166765.8
20175065.8
20188965.8
20197065.8
20206960.7
20216460.7
20224960.7
First to last qualifying date each year at Sullivan 3S For each year, a bar from the first to the last day at Sullivan 3S meeting 30 C (86 F). 2001: 15 May 2001 to 13 September 20012002: 31 May 2002 to 3 October 20022003: 18 June 2003 to 29 August 20032004: 21 May 2004 to 13 September 20042005: 11 May 2005 to 5 October 20052006: 27 May 2006 to 5 October 20062007: 1 May 2007 to 9 October 20072008: 3 June 2008 to 4 September 20082009: 2 June 2009 to 18 August 20092010: 24 May 2010 to 24 September 20102011: 12 May 2011 to 14 September 20112016: 29 May 2016 to 26 September 20162017: 19 May 2017 to 27 September 20172018: 3 May 2018 to 10 October 20182019: 17 May 2019 to 3 October 20192020: 25 May 2020 to 8 October 20202021: 24 May 2021 to 11 October 20212022: 11 May 2022 to 22 September 2022200120042007201020172020JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Sullivan 3S meeting 30 C (86 F).
First to last qualifying date each year at Sullivan 3S
YearFirst dateLast date
20012001-05-152001-09-13
20022002-05-312002-10-03
20032003-06-182003-08-29
20042004-05-212004-09-13
20052005-05-112005-10-05
20062006-05-272006-10-05
20072007-05-012007-10-09
20082008-06-032008-09-04
20092009-06-022009-08-18
20102010-05-242010-09-24
20112011-05-122011-09-14
20162016-05-292016-09-26
20172017-05-192017-09-27
20182018-05-032018-10-10
20192019-05-172019-10-03
20202020-05-252020-10-08
20212021-05-242021-10-11
20222022-05-112022-09-22

Every Fixed Threshold

Fixed thresholds at Sullivan 3S
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days1889201849
35 C (95 F): Days14720115
90 F (32.2 C): Days1844201825
100 F (37.8 C): Days1120031
0 C (32 F): Ice days (max1841200837
0 C (32 F): Frost days (min171372018111
-10 C (14 F): Days with min1746202246
-20 C (-4 F): Days with min13920189
20 C (68 F): Tropical nights (min1753201833
25 C (77 F): Days with min8320102
10 mm (0.39 in): Days with 10 mm or more rain284920091
25 mm (0.98 in): Days with 25 mm or more rain272020084
50 mm (1.97 in): Days with 50 mm or more rain25519491
100 mm (3.94 in): Days with 100 mm or more rain2120031
10 cm (3.9 in): Days with 10 cm or more snowfall14319821
25 cm (9.8 in): Days with 25 cm or more snowfall1119821

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2001.

Download the Data

  • Data for Sullivan 3S 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).