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Built 2026-10-19 (19 October 2026)

Deadwood Summit Threshold Days by Year (USS0015E04S)

11 fixed thresholds counted per year at Deadwood Summit (USS0015E04S): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Deadwood Summit Thresholds

  • Deadwood Summit: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 1982 with 85.
  • Deadwood Summit: days with 25 mm (0.98 in) or more of precipitation in 46 years, most in 1996 with 31.
  • Deadwood Summit: days with a maximum temperature at or below 0 C (32 F) in 37 years, most in 2011 with 106.
  • Deadwood Summit: days with 50 mm (1.97 in) or more of precipitation in 34 years, most in 1996 with 8.
  • 11 fixed thresholds have at least one qualifying day at Deadwood Summit.
30 years with a qualifying day
Days at or above 30 C (86 F) per year at Deadwood Summit Days per year at Deadwood Summit with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 18 in 2007. 051015201990: 11996: 41997: 11998: 91999: 22000: 102001: 92002: 92003: 172004: 32005: 12006: 92007: 182008: 102009: 62011: 22012: 52013: 102014: 32015: 82016: 12017: 102018: 62019: 12020: 72021: 122022: 92023: 72024: 112026: 21990199820012004200720112014201720202023
Days per year at Deadwood Summit with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 18 in 2007.
Days at or above 30 C (86 F) per year at Deadwood Summit
YearDaysDecade average
199013.4
199643.4
199713.4
199893.4
199923.4
2000109.2
200199.2
200299.2
2003179.2
200439.2
200519.2
200699.2
2007189.2
2008109.2
200969.2
201125.1
201255.1
2013105.1
201435.1
201585.1
201615.1
2017105.1
201865.1
201915.1
202078
2021128
202298
202378
2024118
202628
First to last qualifying date each year at Deadwood Summit For each year, a bar from the first to the last day at Deadwood Summit meeting 30 C (86 F). 1990: 6 August 1990 to 6 August 19901996: 26 July 1996 to 10 August 19961997: 3 August 1997 to 3 August 19971998: 16 July 1998 to 4 September 19981999: 27 July 1999 to 28 July 19992000: 12 July 2000 to 23 August 20002001: 3 July 2001 to 27 August 20012002: 25 June 2002 to 17 July 20022003: 10 July 2003 to 19 August 20032004: 14 July 2004 to 1 August 20042005: 21 July 2005 to 21 July 20052006: 4 July 2006 to 28 July 20062007: 4 July 2007 to 3 September 20072008: 29 June 2008 to 24 August 20082009: 18 July 2009 to 27 August 20092011: 24 July 2011 to 21 August 20112012: 9 July 2012 to 7 August 20122013: 28 June 2013 to 15 August 20132014: 13 July 2014 to 27 July 20142015: 26 June 2015 to 26 August 20152016: 29 June 2016 to 29 June 20162017: 5 July 2017 to 3 September 20172018: 9 July 2018 to 11 August 20182019: 22 July 2019 to 22 July 20192020: 30 July 2020 to 5 September 20202021: 28 June 2021 to 13 August 20212022: 12 July 2022 to 6 September 20222023: 16 July 2023 to 17 August 20232024: 9 July 2024 to 3 August 20242026: 31 July 2026 to 21 August 202619901999200320072012201620202024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Deadwood Summit meeting 30 C (86 F).
First to last qualifying date each year at Deadwood Summit
YearFirst dateLast date
19901990-08-061990-08-06
19961996-07-261996-08-10
19971997-08-031997-08-03
19981998-07-161998-09-04
19991999-07-271999-07-28
20002000-07-122000-08-23
20012001-07-032001-08-27
20022002-06-252002-07-17
20032003-07-102003-08-19
20042004-07-142004-08-01
20052005-07-212005-07-21
20062006-07-042006-07-28
20072007-07-042007-09-03
20082008-06-292008-08-24
20092009-07-182009-08-27
20112011-07-242011-08-21
20122012-07-092012-08-07
20132013-06-282013-08-15
20142014-07-132014-07-27
20152015-06-262015-08-26
20162016-06-292016-06-29
20172017-07-052017-09-03
20182018-07-092018-08-11
20192019-07-222019-07-22
20202020-07-302020-09-05
20212021-06-282021-08-13
20222022-07-122022-09-06
20232023-07-162023-08-17
20242024-07-092024-08-03
20262026-07-312026-08-21

Every Fixed Threshold

Fixed thresholds at Deadwood Summit
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days301820072
35 C (95 F): Days1220022
90 F (32.2 C): Days13920031
0 C (32 F): Ice days (max37106201129
0 C (32 F): Frost days (min333001999175
-10 C (14 F): Days with min33128201147
-20 C (-4 F): Days with min333720134
-30 C (-22 F): Days with min19420132
10 mm (0.39 in): Days with 10 mm or more rain4685198235
25 mm (0.98 in): Days with 25 mm or more rain463119969
50 mm (1.97 in): Days with 50 mm or more rain34819961

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1990.

Download the Data

  • Data for Deadwood Summit 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).