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Built 2026-10-19 (19 October 2026)

Hemlock Butte Threshold Days by Year (USS0015C06S)

10 fixed thresholds counted per year at Hemlock Butte (USS0015C06S): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hemlock Butte Thresholds

  • Hemlock Butte: days with 10 mm (0.39 in) or more of precipitation in 43 years, most in 1997 with 95.
  • Hemlock Butte: days with 25 mm (0.98 in) or more of precipitation in 43 years, most in 1997 with 28.
  • Hemlock Butte: days with a maximum temperature at or below 0 C (32 F) in 41 years, most in 1985 with 141.
  • Hemlock Butte: nights with a minimum temperature at or below 0 C (32 F) in 34 years, most in 1996 with 209.
  • 10 fixed thresholds have at least one qualifying day at Hemlock Butte.
30 years with a qualifying day
Days at or above 30 C (86 F) per year at Hemlock Butte Days per year at Hemlock Butte with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 6 in 2007. 02461984: 21985: 11986: 11988: 41992: 21994: 21996: 11997: 11998: 31999: 22000: 12001: 22002: 42003: 32005: 12006: 32007: 62008: 62009: 12012: 22013: 12014: 12015: 52017: 22018: 22019: 12020: 12021: 42022: 12024: 31984198819961999200220062009201420182021
Days per year at Hemlock Butte with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 6 in 2007.
Days at or above 30 C (86 F) per year at Hemlock Butte
YearDaysDecade average
198422
198512
198612
198842
199221.8
199421.8
199611.8
199711.8
199831.8
199921.8
200013
200123
200243
200333
200513
200633
200763
200863
200913
201222
201312
201412
201552
201722
201822
201912
202012.3
202142.3
202212.3
202432.3
First to last qualifying date each year at Hemlock Butte For each year, a bar from the first to the last day at Hemlock Butte meeting 30 C (86 F). 1984: 28 June 1984 to 9 August 19841985: 9 July 1985 to 9 July 19851986: 28 August 1986 to 28 August 19861988: 24 August 1988 to 4 September 19881992: 13 August 1992 to 14 August 19921994: 13 August 1994 to 14 August 19941996: 10 August 1996 to 10 August 19961997: 3 August 1997 to 3 August 19971998: 17 July 1998 to 5 August 19981999: 27 July 1999 to 18 August 19992000: 9 August 2000 to 9 August 20002001: 3 July 2001 to 12 August 20012002: 10 July 2002 to 13 July 20022003: 18 July 2003 to 15 August 20032005: 21 August 2005 to 21 August 20052006: 21 July 2006 to 23 July 20062007: 5 July 2007 to 15 August 20072008: 29 June 2008 to 18 August 20082009: 1 August 2009 to 1 August 20092012: 8 July 2012 to 7 August 20122013: 1 July 2013 to 1 July 20132014: 11 August 2014 to 11 August 20142015: 27 June 2015 to 13 August 20152017: 29 August 2017 to 6 September 20172018: 9 August 2018 to 10 August 20182019: 5 August 2019 to 5 August 20192020: 31 July 2020 to 31 July 20202021: 28 June 2021 to 31 July 20212022: 31 August 2022 to 31 August 20222024: 10 July 2024 to 2 August 202419841992199820022007201320182022JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Hemlock Butte meeting 30 C (86 F).
First to last qualifying date each year at Hemlock Butte
YearFirst dateLast date
19841984-06-281984-08-09
19851985-07-091985-07-09
19861986-08-281986-08-28
19881988-08-241988-09-04
19921992-08-131992-08-14
19941994-08-131994-08-14
19961996-08-101996-08-10
19971997-08-031997-08-03
19981998-07-171998-08-05
19991999-07-271999-08-18
20002000-08-092000-08-09
20012001-07-032001-08-12
20022002-07-102002-07-13
20032003-07-182003-08-15
20052005-08-212005-08-21
20062006-07-212006-07-23
20072007-07-052007-08-15
20082008-06-292008-08-18
20092009-08-012009-08-01
20122012-07-082012-08-07
20132013-07-012013-07-01
20142014-08-112014-08-11
20152015-06-272015-08-13
20172017-08-292017-09-06
20182018-08-092018-08-10
20192019-08-052019-08-05
20202020-07-312020-07-31
20212021-06-282021-07-31
20222022-08-312022-08-31
20242024-07-102024-08-02

Every Fixed Threshold

Fixed thresholds at Hemlock Butte
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days30620073
90 F (32.2 C): Days8220021
0 C (32 F): Ice days (max41141198541
0 C (32 F): Frost days (min342091996102
-10 C (14 F): Days with min343819967
-20 C (-4 F): Days with min17519982
20 C (68 F): Tropical nights (min20720221
10 mm (0.39 in): Days with 10 mm or more rain4395199737
25 mm (0.98 in): Days with 25 mm or more rain432819978
50 mm (1.97 in): Days with 50 mm or more rain34519971

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1984.

Download the Data

  • Data for Hemlock Butte 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).