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Built 2026-10-18 (18 October 2026)

Flattop Mountain - Cleveland 1 Threshold Days by Year

11 fixed thresholds counted per year at Flattop Mountain - Cleveland 1 (USR0000FTOP): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Flattop Mountain - Cleveland 1 Thresholds

  • Flattop Mountain - Cleveland 1: days with a maximum temperature at or above 30 C (86 F) in 39 years, most in 2001 with 91.
  • Flattop Mountain - Cleveland 1: days with a maximum temperature at or above 35 C (95 F) in 39 years, most in 2003 with 38.
  • Flattop Mountain - Cleveland 1: days with a maximum temperature at or above 90 F (32.2 C) in 39 years, most in 2021 with 66.
  • Flattop Mountain - Cleveland 1: nights with a minimum temperature at or below 0 C (32 F) in 39 years, most in 2011 with 158.
  • 11 fixed thresholds have at least one qualifying day at Flattop Mountain - Cleveland 1.
39 years with a qualifying day
Days at or above 30 C (86 F) per year at Flattop Mountain - Cleveland 1 Days per year at Flattop Mountain - Cleveland 1 with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 91 in 2001. 02550751001988: 781989: 561990: 681991: 561992: 511993: 471994: 851995: 601996: 881997: 511998: 611999: 512000: 812001: 912002: 832003: 892004: 652005: 642006: 872007: 852008: 822009: 702010: 792011: 642012: 792013: 582014: 552015: 632016: 712017: 812018: 862019: 702020: 862021: 802022: 792023: 592024: 822025: 742026: 771988199219962000200420082012201620202024
Days per year at Flattop Mountain - Cleveland 1 with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 91 in 2001.
Days at or above 30 C (86 F) per year at Flattop Mountain - Cleveland 1
YearDaysDecade average
19887867
19895667
19906861.8
19915661.8
19925161.8
19934761.8
19948561.8
19956061.8
19968861.8
19975161.8
19986161.8
19995161.8
20008179.7
20019179.7
20028379.7
20038979.7
20046579.7
20056479.7
20068779.7
20078579.7
20088279.7
20097079.7
20107970.6
20116470.6
20127970.6
20135870.6
20145570.6
20156370.6
20167170.6
20178170.6
20188670.6
20197070.6
20208676.7
20218076.7
20227976.7
20235976.7
20248276.7
20257476.7
20267776.7
First to last qualifying date each year at Flattop Mountain - Cleveland 1 For each year, a bar from the first to the last day at Flattop Mountain - Cleveland 1 meeting 30 C (86 F). 1988: 3 June 1988 to 9 September 19881989: 7 May 1989 to 29 September 19891990: 4 June 1990 to 15 September 19901991: 8 June 1991 to 27 September 19911992: 18 May 1992 to 10 September 19921993: 13 June 1993 to 11 September 19931994: 30 May 1994 to 28 September 19941995: 12 June 1995 to 16 September 19951996: 12 May 1996 to 10 September 19961997: 16 May 1997 to 30 August 19971998: 2 June 1998 to 17 September 19981999: 13 June 1999 to 6 September 19992000: 3 May 2000 to 17 September 20002001: 23 May 2001 to 29 September 20012002: 18 May 2002 to 5 September 20022003: 22 May 2003 to 1 October 20032004: 2 June 2004 to 17 September 20042005: 19 May 2005 to 20 September 20052006: 16 May 2006 to 13 September 20062007: 4 June 2007 to 15 September 20072008: 18 May 2008 to 1 October 20082009: 17 May 2009 to 27 September 20092010: 4 June 2010 to 2 October 20102011: 5 June 2011 to 29 September 20112012: 23 April 2012 to 6 September 20122013: 7 June 2013 to 7 September 20132014: 27 May 2014 to 20 September 20142015: 1 June 2015 to 28 September 20152016: 4 June 2016 to 19 September 20162017: 4 June 2017 to 12 September 20172018: 9 May 2018 to 18 September 20182019: 12 June 2019 to 7 September 20192020: 28 May 2020 to 25 September 20202021: 2 June 2021 to 15 September 20212022: 16 May 2022 to 12 September 20222023: 19 June 2023 to 9 September 20232024: 5 June 2024 to 30 September 20242025: 30 May 2025 to 3 September 20252026: 11 May 2026 to 13 September 202619881993199820032008201320182023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Flattop Mountain - Cleveland 1 meeting 30 C (86 F).
First to last qualifying date each year at Flattop Mountain - Cleveland 1
YearFirst dateLast date
19881988-06-031988-09-09
19891989-05-071989-09-29
19901990-06-041990-09-15
19911991-06-081991-09-27
19921992-05-181992-09-10
19931993-06-131993-09-11
19941994-05-301994-09-28
19951995-06-121995-09-16
19961996-05-121996-09-10
19971997-05-161997-08-30
19981998-06-021998-09-17
19991999-06-131999-09-06
20002000-05-032000-09-17
20012001-05-232001-09-29
20022002-05-182002-09-05
20032003-05-222003-10-01
20042004-06-022004-09-17
20052005-05-192005-09-20
20062006-05-162006-09-13
20072007-06-042007-09-15
20082008-05-182008-10-01
20092009-05-172009-09-27
20102010-06-042010-10-02
20112011-06-052011-09-29
20122012-04-232012-09-06
20132013-06-072013-09-07
20142014-05-272014-09-20
20152015-06-012015-09-28
20162016-06-042016-09-19
20172017-06-042017-09-12
20182018-05-092018-09-18
20192019-06-122019-09-07
20202020-05-282020-09-25
20212021-06-022021-09-15
20222022-05-162022-09-12
20232023-06-192023-09-09
20242024-06-052024-09-30
20252025-05-302025-09-03
20262026-05-112026-09-13

Every Fixed Threshold

Fixed thresholds at Flattop Mountain - Cleveland 1
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3991200177
35 C (95 F): Days3938200327
40 C (104 F): Days2220021
90 F (32.2 C): Days3966202157
100 F (37.8 C): Days231020025
0 C (32 F): Ice days (max383020137
0 C (32 F): Frost days (min39158201145
-10 C (14 F): Days with min382819881
-20 C (-4 F): Days with min3419901
20 C (68 F): Tropical nights (min3940202036
25 C (77 F): Days with min6220032

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 Flattop Mountain - Cleveland 1 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-16).