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Built 2026-10-19 (19 October 2026)

Jeffrey City Threshold Days by Year (USC00484925)

16 fixed thresholds counted per year at Jeffrey City (USC00484925): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Jeffrey City Thresholds

  • Jeffrey City: days with 10 cm (3.9 in) or more of snowfall in 44 years, most in 2009 with 10.
  • Jeffrey City: days with a maximum temperature at or above 30 C (86 F) in 40 years, most in 2020 with 63.
  • Jeffrey City: days with a maximum temperature at or above 90 F (32.2 C) in 40 years, most in 2022 with 33.
  • Jeffrey City: days with a maximum temperature at or below 0 C (32 F) in 40 years, most in 1993 with 89.
  • 16 fixed thresholds have at least one qualifying day at Jeffrey City.
40 years with a qualifying day
Days at or above 30 C (86 F) per year at Jeffrey City Days per year at Jeffrey City with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 63 in 2020. 0204060801979: 271980: 231989: 271990: 301991: 271992: 221993: 101994: 391995: 361996: 401997: 301998: 281999: 292000: 472001: 512002: 422003: 502004: 172005: 342006: 422007: 512008: 312009: 182010: 242011: 292012: 542013: 492014: 232015: 302016: 442017: 342018: 462019: 382020: 632021: 552022: 592023: 382024: 502025: 612026: 611979199119951999200320072011201520192023
Days per year at Jeffrey City with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 63 in 2020.
Days at or above 30 C (86 F) per year at Jeffrey City
YearDaysDecade average
19792727
19802325
19892725
19903029.1
19912729.1
19922229.1
19931029.1
19943929.1
19953629.1
19964029.1
19973029.1
19982829.1
19992929.1
20004738.3
20015138.3
20024238.3
20035038.3
20041738.3
20053438.3
20064238.3
20075138.3
20083138.3
20091838.3
20102437.1
20112937.1
20125437.1
20134937.1
20142337.1
20153037.1
20164437.1
20173437.1
20184637.1
20193837.1
20206355.3
20215555.3
20225955.3
20233855.3
20245055.3
20256155.3
20266155.3
First to last qualifying date each year at Jeffrey City For each year, a bar from the first to the last day at Jeffrey City meeting 30 C (86 F). 1979: 14 June 1979 to 10 September 19791980: 26 June 1980 to 7 September 19801989: 16 June 1989 to 31 August 19891990: 24 June 1990 to 15 September 19901991: 5 July 1991 to 3 September 19911992: 23 June 1992 to 22 August 19921993: 28 June 1993 to 26 August 19931994: 18 June 1994 to 27 August 19941995: 7 July 1995 to 5 September 19951996: 10 June 1996 to 11 September 19961997: 23 June 1997 to 11 September 19971998: 2 July 1998 to 8 September 19981999: 21 June 1999 to 31 August 19992000: 6 June 2000 to 17 September 20002001: 10 June 2001 to 5 September 20012002: 31 May 2002 to 5 September 20022003: 29 May 2003 to 27 August 20032004: 8 July 2004 to 2 September 20042005: 18 June 2005 to 9 September 20052006: 3 June 2006 to 31 August 20062007: 17 June 2007 to 5 September 20072008: 26 June 2008 to 31 August 20082009: 26 June 2009 to 23 August 20092010: 25 June 2010 to 29 September 20102011: 29 June 2011 to 1 September 20112012: 5 June 2012 to 30 August 20122013: 10 June 2013 to 8 September 20132014: 29 May 2014 to 13 August 20142015: 19 June 2015 to 26 September 20152016: 7 June 2016 to 2 September 20162017: 5 June 2017 to 13 September 20172018: 6 June 2018 to 16 September 20182019: 29 June 2019 to 6 September 20192020: 30 May 2020 to 7 September 20202021: 4 June 2021 to 11 September 20212022: 11 June 2022 to 9 September 20222023: 3 July 2023 to 31 August 20232024: 6 June 2024 to 1 October 20242025: 1 June 2025 to 8 September 20252026: 12 May 2026 to 31 August 202619791992199720022007201220172022JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Jeffrey City meeting 30 C (86 F).
First to last qualifying date each year at Jeffrey City
YearFirst dateLast date
19791979-06-141979-09-10
19801980-06-261980-09-07
19891989-06-161989-08-31
19901990-06-241990-09-15
19911991-07-051991-09-03
19921992-06-231992-08-22
19931993-06-281993-08-26
19941994-06-181994-08-27
19951995-07-071995-09-05
19961996-06-101996-09-11
19971997-06-231997-09-11
19981998-07-021998-09-08
19991999-06-211999-08-31
20002000-06-062000-09-17
20012001-06-102001-09-05
20022002-05-312002-09-05
20032003-05-292003-08-27
20042004-07-082004-09-02
20052005-06-182005-09-09
20062006-06-032006-08-31
20072007-06-172007-09-05
20082008-06-262008-08-31
20092009-06-262009-08-23
20102010-06-252010-09-29
20112011-06-292011-09-01
20122012-06-052012-08-30
20132013-06-102013-09-08
20142014-05-292014-08-13
20152015-06-192015-09-26
20162016-06-072016-09-02
20172017-06-052017-09-13
20182018-06-062018-09-16
20192019-06-292019-09-06
20202020-05-302020-09-07
20212021-06-042021-09-11
20222022-06-112022-09-09
20232023-07-032023-08-31
20242024-06-062024-10-01
20252025-06-012025-09-08
20262026-05-122026-08-31

Every Fixed Threshold

Fixed thresholds at Jeffrey City
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days4063202061
35 C (95 F): Days237202118
90 F (32.2 C): Days4033202240
100 F (37.8 C): Days10n/a2
0 C (32 F): Ice days (max408919939
0 C (32 F): Frost days (min402282014115
-10 C (14 F): Days with min40101202340
-20 C (-4 F): Days with min403520196
-30 C (-22 F): Days with min281020132
-40 C (-40 F): Days with min4219902
20 C (68 F): Tropical nights (min10n/a1
10 mm (0.39 in): Days with 10 mm or more rain381119924
25 mm (0.98 in): Days with 25 mm or more rain20420231
50 mm (1.97 in): Days with 50 mm or more rain2120221
10 cm (3.9 in): Days with 10 cm or more snowfall441020093
25 cm (9.8 in): Days with 25 cm or more snowfall16320231

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1979.

Download the Data

  • Data for Jeffrey City 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).