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Built 2026-10-19 (19 October 2026)

Black Rock Arizona Threshold Days by Year (USR0000ABRK)

7 fixed thresholds counted per year at Black Rock Arizona (USR0000ABRK): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Black Rock Arizona Thresholds

  • Black Rock Arizona: days with a maximum temperature at or above 30 C (86 F) in 33 years, most in 2002 with 36.
  • Black Rock Arizona: days with a maximum temperature at or below 0 C (32 F) in 33 years, most in 2001 with 32.
  • Black Rock Arizona: nights with a minimum temperature at or below 0 C (32 F) in 32 years, most in 2011 with 138.
  • Black Rock Arizona: nights with a minimum temperature at or below -10 C (14 F) in 32 years, most in 2004 with 18.
  • 7 fixed thresholds have at least one qualifying day at Black Rock Arizona.
33 years with a qualifying day
Days at or above 30 C (86 F) per year at Black Rock Arizona Days per year at Black Rock Arizona with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 36 in 2002. 0102030401993: 41994: 291995: 101996: 261997: 61998: 141999: 52000: 192001: 172002: 362003: 292004: 142005: 152006: 202007: 262008: 182009: 262010: 192011: 182013: 162014: 52015: 112016: 172017: 212018: 222019: 92020: 332021: 262022: 172023: 172024: 292025: 222026: 30199319972001200520092014201820222026
Days per year at Black Rock Arizona with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 36 in 2002.
Days at or above 30 C (86 F) per year at Black Rock Arizona
YearDaysDecade average
1993413.4
19942913.4
19951013.4
19962613.4
1997613.4
19981413.4
1999513.4
20001922
20011722
20023622
20032922
20041422
20051522
20062022
20072622
20081822
20092622
20101915.3
20111815.3
20131615.3
2014515.3
20151115.3
20161715.3
20172115.3
20182215.3
2019915.3
20203324.9
20212624.9
20221724.9
20231724.9
20242924.9
20252224.9
20263024.9
First to last qualifying date each year at Black Rock Arizona For each year, a bar from the first to the last day at Black Rock Arizona meeting 30 C (86 F). 1993: 31 July 1993 to 3 August 19931994: 24 June 1994 to 16 August 19941995: 25 July 1995 to 31 August 19951996: 4 June 1996 to 31 August 19961997: 14 July 1997 to 7 August 19971998: 12 July 1998 to 29 August 19981999: 29 June 1999 to 6 July 19992000: 14 June 2000 to 12 August 20002001: 29 June 2001 to 23 September 20012002: 30 May 2002 to 18 August 20022003: 27 May 2003 to 18 August 20032004: 5 June 2004 to 1 September 20042005: 1 July 2005 to 28 August 20052006: 6 June 2006 to 22 August 20062007: 14 June 2007 to 30 August 20072008: 20 June 2008 to 29 August 20082009: 24 June 2009 to 29 August 20092010: 27 June 2010 to 28 September 20102011: 22 June 2011 to 4 September 20112013: 7 June 2013 to 16 August 20132014: 30 June 2014 to 23 July 20142015: 20 June 2015 to 19 August 20152016: 4 June 2016 to 14 August 20162017: 17 June 2017 to 4 September 20172018: 21 June 2018 to 9 August 20182019: 28 July 2019 to 4 September 20192020: 22 June 2020 to 7 September 20202021: 3 June 2021 to 8 September 20212022: 9 July 2022 to 7 September 20222023: 2 July 2023 to 29 July 20232024: 6 June 2024 to 7 August 20242025: 15 June 2025 to 23 August 20252026: 12 June 2026 to 10 September 20261993199820032008201420192024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Black Rock Arizona meeting 30 C (86 F).
First to last qualifying date each year at Black Rock Arizona
YearFirst dateLast date
19931993-07-311993-08-03
19941994-06-241994-08-16
19951995-07-251995-08-31
19961996-06-041996-08-31
19971997-07-141997-08-07
19981998-07-121998-08-29
19991999-06-291999-07-06
20002000-06-142000-08-12
20012001-06-292001-09-23
20022002-05-302002-08-18
20032003-05-272003-08-18
20042004-06-052004-09-01
20052005-07-012005-08-28
20062006-06-062006-08-22
20072007-06-142007-08-30
20082008-06-202008-08-29
20092009-06-242009-08-29
20102010-06-272010-09-28
20112011-06-222011-09-04
20132013-06-072013-08-16
20142014-06-302014-07-23
20152015-06-202015-08-19
20162016-06-042016-08-14
20172017-06-172017-09-04
20182018-06-212018-08-09
20192019-07-282019-09-04
20202020-06-222020-09-07
20212021-06-032021-09-08
20222022-07-092022-09-07
20232023-07-022023-07-29
20242024-06-062024-08-07
20252025-06-152025-08-23
20262026-06-122026-09-10

Every Fixed Threshold

Fixed thresholds at Black Rock Arizona
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3336200230
35 C (95 F): Days10420213
90 F (32.2 C): Days301520208
0 C (32 F): Ice days (max333220017
0 C (32 F): Frost days (min32138201136
-10 C (14 F): Days with min321820043
20 C (68 F): Tropical nights (min3231202029

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1993.

Download the Data

  • Data for Black Rock Arizona 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).