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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Dayton Wright Brothers AP Threshold Days by Year (USW00053859)

13 fixed thresholds counted per year at Dayton Wright Brothers AP (USW00053859): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Dayton Wright Brothers AP Thresholds

  • Dayton Wright Brothers AP: days with a maximum temperature at or above 30 C (86 F) in 28 years, most in 2019 with 79.
  • Dayton Wright Brothers AP: days with a maximum temperature at or below 0 C (32 F) in 28 years, most in 2010 with 52.
  • Dayton Wright Brothers AP: nights with a minimum temperature at or below 0 C (32 F) in 28 years, most in 2013 with 128.
  • Dayton Wright Brothers AP: nights with a minimum temperature at or above 20 C (68 F) in 28 years, most in 2018 with 70.
  • 13 fixed thresholds have at least one qualifying day at Dayton Wright Brothers AP.
28 years with a qualifying day
Days at or above 30 C (86 F) per year at Dayton Wright Brothers AP Days per year at Dayton Wright Brothers AP with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 79 in 2019. 0204060801998: 451999: 532000: 132001: 272002: 522003: 202004: 202005: 452006: 322007: 652008: 362009: 142010: 592011: 552012: 602013: 262014: 222015: 282016: 592017: 352018: 742019: 792020: 572021: 422022: 442023: 432024: 682025: 481998200120042007201020132016201920222025
Days per year at Dayton Wright Brothers AP with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 79 in 2019.
Days at or above 30 C (86 F) per year at Dayton Wright Brothers AP
YearDaysDecade average
19984549
19995349
20001332.4
20012732.4
20025232.4
20032032.4
20042032.4
20054532.4
20063232.4
20076532.4
20083632.4
20091432.4
20105949.7
20115549.7
20126049.7
20132649.7
20142249.7
20152849.7
20165949.7
20173549.7
20187449.7
20197949.7
20205750.3
20214250.3
20224450.3
20234350.3
20246850.3
20254850.3
First to last qualifying date each year at Dayton Wright Brothers AP For each year, a bar from the first to the last day at Dayton Wright Brothers AP meeting 30 C (86 F). 1998: 14 May 1998 to 27 September 19981999: 5 June 1999 to 28 September 19992000: 1 June 2000 to 2 September 20002001: 11 June 2001 to 7 September 20012002: 31 May 2002 to 19 September 20022003: 24 June 2003 to 29 August 20032004: 8 June 2004 to 23 September 20042005: 5 June 2005 to 28 August 20052006: 28 May 2006 to 26 August 20062007: 23 May 2007 to 8 October 20072008: 5 June 2008 to 14 September 20082009: 23 May 2009 to 27 August 20092010: 26 May 2010 to 10 October 20102011: 29 May 2011 to 13 September 20112012: 25 May 2012 to 7 September 20122013: 15 May 2013 to 11 September 20132014: 13 May 2014 to 5 September 20142015: 7 May 2015 to 8 September 20152016: 27 May 2016 to 23 September 20162017: 20 May 2017 to 27 September 20172018: 11 May 2018 to 8 October 20182019: 18 May 2019 to 3 October 20192020: 24 May 2020 to 12 September 20202021: 20 May 2021 to 19 September 20212022: 11 May 2022 to 21 September 20222023: 29 May 2023 to 3 October 20232024: 2 May 2024 to 22 September 20242025: 3 June 2025 to 29 September 20251998200220062010201420182022JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Dayton Wright Brothers AP meeting 30 C (86 F).
First to last qualifying date each year at Dayton Wright Brothers AP
YearFirst dateLast date
19981998-05-141998-09-27
19991999-06-051999-09-28
20002000-06-012000-09-02
20012001-06-112001-09-07
20022002-05-312002-09-19
20032003-06-242003-08-29
20042004-06-082004-09-23
20052005-06-052005-08-28
20062006-05-282006-08-26
20072007-05-232007-10-08
20082008-06-052008-09-14
20092009-05-232009-08-27
20102010-05-262010-10-10
20112011-05-292011-09-13
20122012-05-252012-09-07
20132013-05-152013-09-11
20142014-05-132014-09-05
20152015-05-072015-09-08
20162016-05-272016-09-23
20172017-05-202017-09-27
20182018-05-112018-10-08
20192019-05-182019-10-03
20202020-05-242020-09-12
20212021-05-202021-09-19
20222022-05-112022-09-21
20232023-05-292023-10-03
20242024-05-022024-09-22
20252025-06-032025-09-29

Every Fixed Threshold

Fixed thresholds at Dayton Wright Brothers AP
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2879201948
35 C (95 F): Days101120123
90 F (32.2 C): Days2643201920
100 F (37.8 C): Days1320123
0 C (32 F): Ice days (max2852201032
0 C (32 F): Frost days (min281282013100
-10 C (14 F): Days with min2732201421
-20 C (-4 F): Days with min10420001
20 C (68 F): Tropical nights (min2870201850
25 C (77 F): Days with min6119991
10 mm (0.39 in): Days with 10 mm or more rain2755201133
25 mm (0.98 in): Days with 25 mm or more rain2715201311
50 mm (1.97 in): Days with 50 mm or more rain16320001

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1998.

Download the Data

  • Data for Dayton Wright Brothers AP 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 (2025-12-31).