Daily records
Page built 2026-10-19
Data as of 2026-10-17
Search
Built 2026-10-19 (19 October 2026)

Flagstaff Arizona Threshold Days by Year (USR0000AFLG)

9 fixed thresholds counted per year at Flagstaff Arizona (USR0000AFLG): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Flagstaff Arizona Thresholds

  • Flagstaff Arizona: days with a maximum temperature at or above 30 C (86 F) in 32 years, most in 2020 with 46.
  • Flagstaff Arizona: days with a maximum temperature at or below 0 C (32 F) in 32 years, most in 1990 with 19.
  • Flagstaff Arizona: nights with a minimum temperature at or below 0 C (32 F) in 32 years, most in 1990 with 222.
  • Flagstaff Arizona: nights with a minimum temperature at or below -10 C (14 F) in 32 years, most in 1990 with 60.
  • 9 fixed thresholds have at least one qualifying day at Flagstaff Arizona.
32 years with a qualifying day
Days at or above 30 C (86 F) per year at Flagstaff Arizona Days per year at Flagstaff Arizona with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 46 in 2020. 02040601988: 61990: 151991: 71992: 31993: 81994: 251995: 232002: 332003: 222004: 52005: 112006: 162007: 182008: 132009: 222010: 92011: 142012: 122013: 122014: 82015: 142016: 212017: 222018: 232019: 262020: 462021: 232022: 252023: 272024: 392025: 392026: 4219881993200320072011201520192023
Days per year at Flagstaff Arizona with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 46 in 2020.
Days at or above 30 C (86 F) per year at Flagstaff Arizona
YearDaysDecade average
198866
19901513.5
1991713.5
1992313.5
1993813.5
19942513.5
19952313.5
20023317.5
20032217.5
2004517.5
20051117.5
20061617.5
20071817.5
20081317.5
20092217.5
2010916.1
20111416.1
20121216.1
20131216.1
2014816.1
20151416.1
20162116.1
20172216.1
20182316.1
20192616.1
20204634.4
20212334.4
20222534.4
20232734.4
20243934.4
20253934.4
20264234.4
First to last qualifying date each year at Flagstaff Arizona For each year, a bar from the first to the last day at Flagstaff Arizona meeting 30 C (86 F). 1988: 22 June 1988 to 23 July 19881990: 4 June 1990 to 13 September 19901991: 1 July 1991 to 21 August 19911992: 5 July 1992 to 2 August 19921993: 14 June 1993 to 3 August 19931994: 10 June 1994 to 10 August 19941995: 6 July 1995 to 2 September 19952002: 30 May 2002 to 18 August 20022003: 29 June 2003 to 13 August 20032004: 5 June 2004 to 9 August 20042005: 20 June 2005 to 21 July 20052006: 4 June 2006 to 25 July 20062007: 15 June 2007 to 21 August 20072008: 19 June 2008 to 3 August 20082009: 28 June 2009 to 30 August 20092010: 5 June 2010 to 15 August 20102011: 21 June 2011 to 27 August 20112012: 1 June 2012 to 11 August 20122013: 7 June 2013 to 10 July 20132014: 28 June 2014 to 26 July 20142015: 17 June 2015 to 16 August 20152016: 3 June 2016 to 29 July 20162017: 16 June 2017 to 4 September 20172018: 12 June 2018 to 19 August 20182019: 29 June 2019 to 6 September 20192020: 29 May 2020 to 7 September 20202021: 12 June 2021 to 8 September 20212022: 8 June 2022 to 8 September 20222023: 2 July 2023 to 30 August 20232024: 5 June 2024 to 28 September 20242025: 9 June 2025 to 24 August 20252026: 19 March 2026 to 10 September 202619881993200320072011201520192023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Flagstaff Arizona meeting 30 C (86 F).
First to last qualifying date each year at Flagstaff Arizona
YearFirst dateLast date
19881988-06-221988-07-23
19901990-06-041990-09-13
19911991-07-011991-08-21
19921992-07-051992-08-02
19931993-06-141993-08-03
19941994-06-101994-08-10
19951995-07-061995-09-02
20022002-05-302002-08-18
20032003-06-292003-08-13
20042004-06-052004-08-09
20052005-06-202005-07-21
20062006-06-042006-07-25
20072007-06-152007-08-21
20082008-06-192008-08-03
20092009-06-282009-08-30
20102010-06-052010-08-15
20112011-06-212011-08-27
20122012-06-012012-08-11
20132013-06-072013-07-10
20142014-06-282014-07-26
20152015-06-172015-08-16
20162016-06-032016-07-29
20172017-06-162017-09-04
20182018-06-122018-08-19
20192019-06-292019-09-06
20202020-05-292020-09-07
20212021-06-122021-09-08
20222022-06-082022-09-08
20232023-07-022023-08-30
20242024-06-052024-09-28
20252025-06-092025-08-24
20262026-03-192026-09-10

Every Fixed Threshold

Fixed thresholds at Flagstaff Arizona
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3246202042
35 C (95 F): Days6220161
90 F (32.2 C): Days2617202013
0 C (32 F): Ice days (max321919903
0 C (32 F): Frost days (min322221990110
-10 C (14 F): Days with min3260199010
-20 C (-4 F): Days with min191319902
-30 C (-22 F): Days with min1119901
20 C (68 F): Tropical nights (min1120021

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1988.

Download the Data

  • Data for Flagstaff 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).