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Built 2026-10-17 (17 October 2026)

Portland (Cashmore Airport) Threshold Days by Year

11 fixed thresholds counted per year at Portland (Cashmore Airport) (ASN00090171): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Portland (Cashmore Airport) Thresholds

  • Portland (Cashmore Airport): days with a maximum temperature at or above 30 C (86 F) in 44 years, most in 2013 with 22.
  • Portland (Cashmore Airport): days with a maximum temperature at or above 90 F (32.2 C) in 44 years, most in 2000 with 14.
  • Portland (Cashmore Airport): days with 10 mm (0.39 in) or more of precipitation in 44 years, most in 2004 with 35.
  • Portland (Cashmore Airport): days with 25 mm (0.98 in) or more of precipitation in 43 years, most in 2003 with 7.
  • 11 fixed thresholds have at least one qualifying day at Portland (Cashmore Airport).
44 years with a qualifying day
Days at or above 30 C (86 F) per year at Portland (Cashmore Airport) Days per year at Portland (Cashmore Airport) with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 22 in 2013. 01020301983: 151984: 61985: 121986: 101987: 161988: 101989: 161990: 131991: 61992: 91993: 121994: 91995: 91996: 81997: 161998: 101999: 142000: 192001: 182002: 112003: 102004: 102005: 142006: 132007: 152008: 142009: 212010: 92011: 52012: 182013: 222014: 172015: 162016: 92017: 192018: 182019: 162020: 122021: 82022: 102023: 92024: 152025: 182026: 6198319881993199820032008201320182023
Days per year at Portland (Cashmore Airport) with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 22 in 2013.
Days at or above 30 C (86 F) per year at Portland (Cashmore Airport)
YearDaysDecade average
19831512.1
1984612.1
19851212.1
19861012.1
19871612.1
19881012.1
19891612.1
19901310.6
1991610.6
1992910.6
19931210.6
1994910.6
1995910.6
1996810.6
19971610.6
19981010.6
19991410.6
20001914.5
20011814.5
20021114.5
20031014.5
20041014.5
20051414.5
20061314.5
20071514.5
20081414.5
20092114.5
2010914.9
2011514.9
20121814.9
20132214.9
20141714.9
20151614.9
2016914.9
20171914.9
20181814.9
20191614.9
20201211.1
2021811.1
20221011.1
2023911.1
20241511.1
20251811.1
2026611.1
First to last qualifying date each year at Portland (Cashmore Airport) For each year, a bar from the first to the last day at Portland (Cashmore Airport) meeting 30 C (86 F). 1983: 22 January 1983 to 29 December 19831984: 5 January 1984 to 26 November 19841985: 13 January 1985 to 11 April 19851986: 14 January 1986 to 30 December 19861987: 24 January 1987 to 31 December 19871988: 7 January 1988 to 16 December 19881989: 2 January 1989 to 31 December 19891990: 10 January 1990 to 31 December 19901991: 2 January 1991 to 6 March 19911992: 20 January 1992 to 4 April 19921993: 15 January 1993 to 10 December 19931994: 25 January 1994 to 12 December 19941995: 10 January 1995 to 17 November 19951996: 14 January 1996 to 21 December 19961997: 4 January 1997 to 26 November 19971998: 12 January 1998 to 10 December 19981999: 2 January 1999 to 15 December 19992000: 12 January 2000 to 21 December 20002001: 1 January 2001 to 9 March 20012002: 10 January 2002 to 30 December 20022003: 12 January 2003 to 29 December 20032004: 14 February 2004 to 31 December 20042005: 11 January 2005 to 27 December 20052006: 19 January 2006 to 21 December 20062007: 2 January 2007 to 14 December 20072008: 4 January 2008 to 18 October 20082009: 13 January 2009 to 31 December 20092010: 8 January 2010 to 31 December 20102011: 7 January 2011 to 5 November 20112012: 3 January 2012 to 23 December 20122013: 3 January 2013 to 19 December 20132014: 10 January 2014 to 13 December 20142015: 2 January 2015 to 31 December 20152016: 13 January 2016 to 12 December 20162017: 6 January 2017 to 27 December 20172018: 5 January 2018 to 27 December 20182019: 11 January 2019 to 30 December 20192020: 30 January 2020 to 14 December 20202021: 11 January 2021 to 17 December 20212022: 21 January 2022 to 4 December 20222023: 7 January 2023 to 8 December 20232024: 16 January 2024 to 26 December 20242025: 4 January 2025 to 29 December 20252026: 7 January 2026 to 31 March 202619831989199520012007201320192025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Portland (Cashmore Airport) meeting 30 C (86 F).
First to last qualifying date each year at Portland (Cashmore Airport)
YearFirst dateLast date
19831983-01-221983-12-29
19841984-01-051984-11-26
19851985-01-131985-04-11
19861986-01-141986-12-30
19871987-01-241987-12-31
19881988-01-071988-12-16
19891989-01-021989-12-31
19901990-01-101990-12-31
19911991-01-021991-03-06
19921992-01-201992-04-04
19931993-01-151993-12-10
19941994-01-251994-12-12
19951995-01-101995-11-17
19961996-01-141996-12-21
19971997-01-041997-11-26
19981998-01-121998-12-10
19991999-01-021999-12-15
20002000-01-122000-12-21
20012001-01-012001-03-09
20022002-01-102002-12-30
20032003-01-122003-12-29
20042004-02-142004-12-31
20052005-01-112005-12-27
20062006-01-192006-12-21
20072007-01-022007-12-14
20082008-01-042008-10-18
20092009-01-132009-12-31
20102010-01-082010-12-31
20112011-01-072011-11-05
20122012-01-032012-12-23
20132013-01-032013-12-19
20142014-01-102014-12-13
20152015-01-022015-12-31
20162016-01-132016-12-12
20172017-01-062017-12-27
20182018-01-052018-12-27
20192019-01-112019-12-30
20202020-01-302020-12-14
20212021-01-112021-12-17
20222022-01-212022-12-04
20232023-01-072023-12-08
20242024-01-162024-12-26
20252025-01-042025-12-29
20262026-01-072026-03-31

Every Fixed Threshold

Fixed thresholds at Portland (Cashmore Airport)
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days442220136
35 C (95 F): Days42920014
40 C (104 F): Days9220061
90 F (32.2 C): Days441420004
100 F (37.8 C): Days31419831
0 C (32 F): Frost days (min20520062
20 C (68 F): Tropical nights (min16319931
25 C (77 F): Days with min1220072
10 mm (0.39 in): Days with 10 mm or more rain4435200410
25 mm (0.98 in): Days with 25 mm or more rain43720032
50 mm (1.97 in): Days with 50 mm or more rain14220111

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1983.

Download the Data

  • Data for Portland (Cashmore Airport) 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).