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Built 2026-10-19 (19 October 2026)

Blue Mountain Spring Threshold Days by Year (USS0018E16S)

12 fixed thresholds counted per year at Blue Mountain Spring (USS0018E16S): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Blue Mountain Spring Thresholds

  • Blue Mountain Spring: days with 10 mm (0.39 in) or more of precipitation in 48 years, most in 1979 with 49.
  • Blue Mountain Spring: days with 25 mm (0.98 in) or more of precipitation in 48 years, most in 2012 with 9.
  • Blue Mountain Spring: days with a maximum temperature at or below 0 C (32 F) in 38 years, most in 1994 with 45.
  • Blue Mountain Spring: nights with a minimum temperature at or below 0 C (32 F) in 36 years, most in 1999 with 234.
  • 12 fixed thresholds have at least one qualifying day at Blue Mountain Spring.
34 years with a qualifying day
Days at or above 30 C (86 F) per year at Blue Mountain Spring Days per year at Blue Mountain Spring with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 23 in 2003. 01020301989: 21990: 121991: 31992: 141994: 141996: 151997: 11998: 181999: 112000: 142001: 152002: 152003: 232004: 122005: 62006: 62007: 172008: 42009: 92012: 82013: 62014: 32015: 92016: 42017: 132018: 32019: 12020: 72021: 192022: 142023: 42024: 112025: 12026: 7198919941999200320072013201720212025
Days per year at Blue Mountain Spring with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 23 in 2003.
Days at or above 30 C (86 F) per year at Blue Mountain Spring
YearDaysDecade average
198922
19901211
1991311
19921411
19941411
19961511
1997111
19981811
19991111
20001412.1
20011512.1
20021512.1
20032312.1
20041212.1
2005612.1
2006612.1
20071712.1
2008412.1
2009912.1
201285.9
201365.9
201435.9
201595.9
201645.9
2017135.9
201835.9
201915.9
202079
2021199
2022149
202349
2024119
202519
202679
First to last qualifying date each year at Blue Mountain Spring For each year, a bar from the first to the last day at Blue Mountain Spring meeting 30 C (86 F). 1989: 14 July 1989 to 6 August 19891990: 10 July 1990 to 14 August 19901991: 3 July 1991 to 18 August 19911992: 22 June 1992 to 19 August 19921994: 17 July 1994 to 14 August 19941996: 13 July 1996 to 10 September 19961997: 4 August 1997 to 4 August 19971998: 16 July 1998 to 5 September 19981999: 10 July 1999 to 27 August 19992000: 12 July 2000 to 14 September 20002001: 21 June 2001 to 26 August 20012002: 25 June 2002 to 14 August 20022003: 29 June 2003 to 3 September 20032004: 14 July 2004 to 13 August 20042005: 15 July 2005 to 21 August 20052006: 20 July 2006 to 27 July 20062007: 4 July 2007 to 15 August 20072008: 29 June 2008 to 17 August 20082009: 18 July 2009 to 27 August 20092012: 9 July 2012 to 14 August 20122013: 30 June 2013 to 26 July 20132014: 13 July 2014 to 11 August 20142015: 26 June 2015 to 2 August 20152016: 25 July 2016 to 17 August 20162017: 7 July 2017 to 5 September 20172018: 8 August 2018 to 10 August 20182019: 28 August 2019 to 28 August 20192020: 30 July 2020 to 5 September 20202021: 27 June 2021 to 15 August 20212022: 12 July 2022 to 6 September 20222023: 16 July 2023 to 16 August 20232024: 8 July 2024 to 2 August 20242025: 12 August 2025 to 12 August 20252026: 18 July 2026 to 21 August 20261989199620012006201320182023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Blue Mountain Spring meeting 30 C (86 F).
First to last qualifying date each year at Blue Mountain Spring
YearFirst dateLast date
19891989-07-141989-08-06
19901990-07-101990-08-14
19911991-07-031991-08-18
19921992-06-221992-08-19
19941994-07-171994-08-14
19961996-07-131996-09-10
19971997-08-041997-08-04
19981998-07-161998-09-05
19991999-07-101999-08-27
20002000-07-122000-09-14
20012001-06-212001-08-26
20022002-06-252002-08-14
20032003-06-292003-09-03
20042004-07-142004-08-13
20052005-07-152005-08-21
20062006-07-202006-07-27
20072007-07-042007-08-15
20082008-06-292008-08-17
20092009-07-182009-08-27
20122012-07-092012-08-14
20132013-06-302013-07-26
20142014-07-132014-08-11
20152015-06-262015-08-02
20162016-07-252016-08-17
20172017-07-072017-09-05
20182018-08-082018-08-10
20192019-08-282019-08-28
20202020-07-302020-09-05
20212021-06-272021-08-15
20222022-07-122022-09-06
20232023-07-162023-08-16
20242024-07-082024-08-02
20252025-08-122025-08-12
20262026-07-182026-08-21

Every Fixed Threshold

Fixed thresholds at Blue Mountain Spring
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days342320037
35 C (95 F): Days3320023
90 F (32.2 C): Days23820031
0 C (32 F): Ice days (max384519948
0 C (32 F): Frost days (min36234199997
-10 C (14 F): Days with min365820016
-20 C (-4 F): Days with min14819901
-30 C (-22 F): Days with min1319903
10 mm (0.39 in): Days with 10 mm or more rain4849197912
25 mm (0.98 in): Days with 25 mm or more rain48920121
50 mm (1.97 in): Days with 50 mm or more rain9220101
100 mm (3.94 in): Days with 100 mm or more rain1119961

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 Blue Mountain Spring 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).