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Built 2026-10-15 (15 October 2026)

Barstow Threshold Days by Year

16 fixed thresholds counted per year at Barstow (USC00040521): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Barstow Thresholds

  • Barstow: nights with a minimum temperature at or below 0 C (32 F) in 41 years, most in 1984 with 56.
  • Barstow: nights with a minimum temperature at or above 20 C (68 F) in 41 years, most in 2003 with 91.
  • Barstow: days with 10 mm (0.39 in) or more of precipitation in 41 years, most in 2010 with 12.
  • Barstow: days with a maximum temperature at or above 30 C (86 F) in 37 years, most in 2020 with 172.
  • 16 fixed thresholds have at least one qualifying day at Barstow.
37 years with a qualifying day
Days at or above 30 C (86 F) per year at Barstow Days per year at Barstow with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 172 in 2020. 0501001502001981: 1461982: 1191983: 1291984: 1501986: 1361987: 1591988: 1651989: 1621995: 1581996: 1601997: 1701999: 1552002: 1542003: 1632004: 1412005: 1332006: 1422007: 1522008: 1442009: 1442010: 1362011: 1412012: 1642013: 1482014: 1582015: 1492016: 1452017: 1462018: 1482019: 1372020: 1722021: 1502022: 1592023: 1442024: 1602025: 1492026: 1631981198619952002200620102014201820222026
Days per year at Barstow with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 172 in 2020.
Days at or above 30 C (86 F) per year at Barstow
YearDaysDecade average
1981146145.8
1982119145.8
1983129145.8
1984150145.8
1986136145.8
1987159145.8
1988165145.8
1989162145.8
1995158160.8
1996160160.8
1997170160.8
1999155160.8
2002154146.6
2003163146.6
2004141146.6
2005133146.6
2006142146.6
2007152146.6
2008144146.6
2009144146.6
2010136147.2
2011141147.2
2012164147.2
2013148147.2
2014158147.2
2015149147.2
2016145147.2
2017146147.2
2018148147.2
2019137147.2
2020172156.7
2021150156.7
2022159156.7
2023144156.7
2024160156.7
2025149156.7
2026163156.7
First to last qualifying date each year at Barstow For each year, a bar from the first to the last day at Barstow meeting 30 C (86 F). 1981: 15 April 1981 to 30 September 19811982: 28 April 1982 to 4 October 19821983: 19 May 1983 to 23 October 19831984: 13 April 1984 to 13 October 19841986: 26 February 1986 to 27 October 19861987: 10 April 1987 to 18 October 19871988: 25 March 1988 to 31 October 19881989: 8 March 1989 to 4 November 19891995: 27 April 1995 to 12 December 19951996: 19 March 1996 to 18 October 19961997: 11 March 1997 to 1 November 19971999: 17 April 1999 to 23 October 19992002: 30 March 2002 to 10 October 20022003: 12 May 2003 to 28 October 20032004: 18 March 2004 to 15 October 20042005: 4 May 2005 to 14 October 20052006: 13 April 2006 to 8 November 20062007: 13 March 2007 to 19 October 20072008: 13 April 2008 to 29 October 20082009: 19 April 2009 to 24 October 20092010: 26 April 2010 to 17 October 20102011: 1 April 2011 to 25 October 20112012: 19 April 2012 to 20 October 20122013: 15 March 2013 to 9 October 20132014: 9 April 2014 to 26 October 20142015: 28 March 2015 to 2 November 20152016: 3 March 2016 to 23 October 20162017: 15 March 2017 to 30 October 20172018: 31 March 2018 to 28 October 20182019: 9 April 2019 to 10 October 20192020: 24 April 2020 to 28 October 20202021: 8 April 2021 to 5 October 20212022: 25 March 2022 to 15 October 20222023: 11 April 2023 to 22 October 20232024: 12 April 2024 to 28 October 20242025: 26 March 2025 to 2 November 20252026: 14 March 2026 to 10 October 202619811987199720052010201520202025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Barstow meeting 30 C (86 F).
First to last qualifying date each year at Barstow
YearFirst dateLast date
19811981-04-151981-09-30
19821982-04-281982-10-04
19831983-05-191983-10-23
19841984-04-131984-10-13
19861986-02-261986-10-27
19871987-04-101987-10-18
19881988-03-251988-10-31
19891989-03-081989-11-04
19951995-04-271995-12-12
19961996-03-191996-10-18
19971997-03-111997-11-01
19991999-04-171999-10-23
20022002-03-302002-10-10
20032003-05-122003-10-28
20042004-03-182004-10-15
20052005-05-042005-10-14
20062006-04-132006-11-08
20072007-03-132007-10-19
20082008-04-132008-10-29
20092009-04-192009-10-24
20102010-04-262010-10-17
20112011-04-012011-10-25
20122012-04-192012-10-20
20132013-03-152013-10-09
20142014-04-092014-10-26
20152015-03-282015-11-02
20162016-03-032016-10-23
20172017-03-152017-10-30
20182018-03-312018-10-28
20192019-04-092019-10-10
20202020-04-242020-10-28
20212021-04-082021-10-05
20222022-03-252022-10-15
20232023-04-112023-10-22
20242024-04-122024-10-28
20252025-03-262025-11-02
20262026-03-142026-10-10

Every Fixed Threshold

Fixed thresholds at Barstow
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days371722020163
35 C (95 F): Days371202024103
40 C (104 F): Days3760202148
45 C (113 F): Days10920249
90 F (32.2 C): Days371472012148
100 F (37.8 C): Days3792202477
110 F (43.3 C): Days3013202410
120 F (48.9 C): Days1119961
0 C (32 F): Frost days (min415619849
-10 C (14 F): Days with min2120071
20 C (68 F): Tropical nights (min4191200376
25 C (77 F): Days with min3731202216
10 mm (0.39 in): Days with 10 mm or more rain411220102
25 mm (0.98 in): Days with 25 mm or more rain17920101
50 mm (1.97 in): Days with 50 mm or more rain1119971
10 cm (3.9 in): Days with 10 cm or more snowfall1120081

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1981.

Download the Data

  • Data for Barstow 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-14).