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Built 2026-10-19 (19 October 2026)

Banner Summit Threshold Days by Year (USS0015E11S)

10 fixed thresholds counted per year at Banner Summit (USS0015E11S): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Banner Summit Thresholds

  • Banner Summit: days with 10 mm (0.39 in) or more of precipitation in 45 years, most in 2017 with 64.
  • Banner Summit: days with 25 mm (0.98 in) or more of precipitation in 45 years, most in 1996 with 20.
  • Banner Summit: days with a maximum temperature at or below 0 C (32 F) in 38 years, most in 1990 with 77.
  • Banner Summit: days with a maximum temperature at or above 30 C (86 F) in 37 years, most in 2007 with 20.
  • 10 fixed thresholds have at least one qualifying day at Banner Summit.
37 years with a qualifying day
Days at or above 30 C (86 F) per year at Banner Summit Days per year at Banner Summit with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 20 in 2007. 051015201989: 61990: 51991: 31992: 31994: 101995: 11996: 61997: 11998: 71999: 32000: 72001: 82002: 62003: 172004: 72005: 82006: 132007: 202008: 92009: 32010: 12011: 32012: 52013: 72014: 52015: 82016: 12017: 122018: 52019: 42020: 72021: 162022: 72023: 72024: 62025: 12026: 51989199419982002200620102014201820222026
Days per year at Banner Summit with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 20 in 2007.
Days at or above 30 C (86 F) per year at Banner Summit
YearDaysDecade average
198966
199054.3
199134.3
199234.3
1994104.3
199514.3
199664.3
199714.3
199874.3
199934.3
200079.8
200189.8
200269.8
2003179.8
200479.8
200589.8
2006139.8
2007209.8
200899.8
200939.8
201015.1
201135.1
201255.1
201375.1
201455.1
201585.1
201615.1
2017125.1
201855.1
201945.1
202077
2021167
202277
202377
202467
202517
202657
First to last qualifying date each year at Banner Summit For each year, a bar from the first to the last day at Banner Summit meeting 30 C (86 F). 1989: 7 July 1989 to 7 August 19891990: 5 August 1990 to 9 August 19901991: 8 August 1991 to 22 August 19911992: 31 July 1992 to 19 August 19921994: 21 July 1994 to 13 August 19941995: 1 September 1995 to 1 September 19951996: 2 July 1996 to 26 August 19961997: 3 August 1997 to 3 August 19971998: 17 July 1998 to 4 September 19981999: 27 July 1999 to 26 August 19992000: 22 July 2000 to 9 August 20002001: 3 July 2001 to 27 August 20012002: 26 June 2002 to 14 July 20022003: 10 July 2003 to 19 August 20032004: 14 July 2004 to 14 August 20042005: 12 July 2005 to 21 August 20052006: 4 July 2006 to 21 August 20062007: 4 July 2007 to 3 September 20072008: 29 June 2008 to 24 August 20082009: 18 July 2009 to 21 August 20092010: 5 August 2010 to 5 August 20102011: 21 August 2011 to 26 August 20112012: 9 July 2012 to 7 August 20122013: 28 June 2013 to 15 August 20132014: 8 July 2014 to 27 July 20142015: 26 June 2015 to 26 August 20152016: 29 June 2016 to 29 June 20162017: 5 July 2017 to 4 September 20172018: 1 August 2018 to 11 August 20182019: 22 July 2019 to 21 August 20192020: 30 July 2020 to 5 September 20202021: 3 June 2021 to 16 August 20212022: 17 August 2022 to 7 September 20222023: 16 July 2023 to 17 August 20232024: 10 July 2024 to 3 August 20242025: 19 August 2025 to 19 August 20252026: 16 July 2026 to 21 August 202619891995200020052010201520202025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Banner Summit meeting 30 C (86 F).
First to last qualifying date each year at Banner Summit
YearFirst dateLast date
19891989-07-071989-08-07
19901990-08-051990-08-09
19911991-08-081991-08-22
19921992-07-311992-08-19
19941994-07-211994-08-13
19951995-09-011995-09-01
19961996-07-021996-08-26
19971997-08-031997-08-03
19981998-07-171998-09-04
19991999-07-271999-08-26
20002000-07-222000-08-09
20012001-07-032001-08-27
20022002-06-262002-07-14
20032003-07-102003-08-19
20042004-07-142004-08-14
20052005-07-122005-08-21
20062006-07-042006-08-21
20072007-07-042007-09-03
20082008-06-292008-08-24
20092009-07-182009-08-21
20102010-08-052010-08-05
20112011-08-212011-08-26
20122012-07-092012-08-07
20132013-06-282013-08-15
20142014-07-082014-07-27
20152015-06-262015-08-26
20162016-06-292016-06-29
20172017-07-052017-09-04
20182018-08-012018-08-11
20192019-07-222019-08-21
20202020-07-302020-09-05
20212021-06-032021-08-16
20222022-08-172022-09-07
20232023-07-162023-08-17
20242024-07-102024-08-03
20252025-08-192025-08-19
20262026-07-162026-08-21

Every Fixed Threshold

Fixed thresholds at Banner Summit
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days372020075
90 F (32.2 C): Days19720071
0 C (32 F): Ice days (max3877199023
0 C (32 F): Frost days (min332812005160
-10 C (14 F): Days with min33136201146
-20 C (-4 F): Days with min332520093
-30 C (-22 F): Days with min4119981
10 mm (0.39 in): Days with 10 mm or more rain4564201731
25 mm (0.98 in): Days with 25 mm or more rain452019963
50 mm (1.97 in): Days with 50 mm or more rain12419961

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1989.

Download the Data

  • Data for Banner 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).