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Built 2026-10-19 (19 October 2026)

Illinois Valley Airport Oregon Threshold Days by Year (USR0000OILL)

12 fixed thresholds counted per year at Illinois Valley Airport Oregon (USR0000OILL): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Illinois Valley Airport Oregon Thresholds

  • Illinois Valley Airport Oregon: days with a maximum temperature at or above 30 C (86 F) in 41 years, most in 2014 with 101.
  • Illinois Valley Airport Oregon: days with a maximum temperature at or above 35 C (95 F) in 41 years, most in 2014 with 53.
  • Illinois Valley Airport Oregon: days with a maximum temperature at or above 90 F (32.2 C) in 41 years, most in 2014 with 77.
  • Illinois Valley Airport Oregon: days with a maximum temperature at or above 100 F (37.8 C) in 41 years, most in 1996 with 24.
  • 12 fixed thresholds have at least one qualifying day at Illinois Valley Airport Oregon.
41 years with a qualifying day
Days at or above 30 C (86 F) per year at Illinois Valley Airport Oregon Days per year at Illinois Valley Airport Oregon with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 101 in 2014. 0501001501986: 771987: 701988: 771989: 731990: 611991: 811992: 911993: 501994: 851995: 721996: 811997: 631998: 841999: 792000: 872001: 922002: 842003: 932004: 812005: 722006: 902007: 732008: 912009: 832010: 742011: 742012: 932013: 812014: 1012015: 902016: 822017: 912018: 822019: 792020: 872021: 982022: 922023: 972024: 902025: 932026: 94198619911996200120062011201620212026
Days per year at Illinois Valley Airport Oregon with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 101 in 2014.
Days at or above 30 C (86 F) per year at Illinois Valley Airport Oregon
YearDaysDecade average
19867774.3
19877074.3
19887774.3
19897374.3
19906174.7
19918174.7
19929174.7
19935074.7
19948574.7
19957274.7
19968174.7
19976374.7
19988474.7
19997974.7
20008784.6
20019284.6
20028484.6
20039384.6
20048184.6
20057284.6
20069084.6
20077384.6
20089184.6
20098384.6
20107484.7
20117484.7
20129384.7
20138184.7
201410184.7
20159084.7
20168284.7
20179184.7
20188284.7
20197984.7
20208793
20219893
20229293
20239793
20249093
20259393
20269493
First to last qualifying date each year at Illinois Valley Airport Oregon For each year, a bar from the first to the last day at Illinois Valley Airport Oregon meeting 30 C (86 F). 1986: 20 April 1986 to 6 October 19861987: 27 April 1987 to 7 October 19871988: 11 May 1988 to 17 October 19881989: 6 April 1989 to 9 October 19891990: 4 May 1990 to 4 October 19901991: 9 June 1991 to 15 October 19911992: 3 May 1992 to 12 October 19921993: 13 June 1993 to 3 October 19931994: 9 May 1994 to 8 October 19941995: 25 May 1995 to 23 September 19951996: 11 May 1996 to 9 October 19961997: 10 May 1997 to 29 September 19971998: 28 April 1998 to 30 September 19981999: 15 April 1999 to 2 October 19992000: 20 May 2000 to 7 October 20002001: 25 April 2001 to 5 October 20012002: 24 May 2002 to 16 October 20022003: 22 May 2003 to 27 October 20032004: 25 April 2004 to 14 October 20042005: 25 May 2005 to 30 September 20052006: 28 April 2006 to 13 October 20062007: 14 May 2007 to 27 September 20072008: 15 May 2008 to 30 September 20082009: 19 April 2009 to 27 September 20092010: 13 June 2010 to 13 October 20102011: 9 June 2011 to 29 September 20112012: 21 April 2012 to 7 October 20122013: 26 April 2013 to 19 September 20132014: 30 April 2014 to 10 October 20142015: 27 April 2015 to 16 October 20152016: 6 April 2016 to 28 September 20162017: 3 May 2017 to 28 September 20172018: 25 April 2018 to 28 September 20182019: 18 April 2019 to 26 September 20192020: 8 May 2020 to 4 October 20202021: 18 April 2021 to 25 September 20212022: 7 April 2022 to 15 October 20222023: 27 April 2023 to 8 October 20232024: 10 May 2024 to 8 October 20242025: 1 May 2025 to 7 October 20252026: 17 March 2026 to 8 October 20261986199219982004201020162022JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Illinois Valley Airport Oregon meeting 30 C (86 F).
First to last qualifying date each year at Illinois Valley Airport Oregon
YearFirst dateLast date
19861986-04-201986-10-06
19871987-04-271987-10-07
19881988-05-111988-10-17
19891989-04-061989-10-09
19901990-05-041990-10-04
19911991-06-091991-10-15
19921992-05-031992-10-12
19931993-06-131993-10-03
19941994-05-091994-10-08
19951995-05-251995-09-23
19961996-05-111996-10-09
19971997-05-101997-09-29
19981998-04-281998-09-30
19991999-04-151999-10-02
20002000-05-202000-10-07
20012001-04-252001-10-05
20022002-05-242002-10-16
20032003-05-222003-10-27
20042004-04-252004-10-14
20052005-05-252005-09-30
20062006-04-282006-10-13
20072007-05-142007-09-27
20082008-05-152008-09-30
20092009-04-192009-09-27
20102010-06-132010-10-13
20112011-06-092011-09-29
20122012-04-212012-10-07
20132013-04-262013-09-19
20142014-04-302014-10-10
20152015-04-272015-10-16
20162016-04-062016-09-28
20172017-05-032017-09-28
20182018-04-252018-09-28
20192019-04-182019-09-26
20202020-05-082020-10-04
20212021-04-182021-09-25
20222022-04-072022-10-15
20232023-04-272023-10-08
20242024-05-102024-10-08
20252025-05-012025-10-07
20262026-03-172026-10-08

Every Fixed Threshold

Fixed thresholds at Illinois Valley Airport Oregon
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days41101201494
35 C (95 F): Days4153201434
40 C (104 F): Days341119962
45 C (113 F): Days1120241
90 F (32.2 C): Days4177201465
100 F (37.8 C): Days412419968
110 F (43.3 C): Days8320063
0 C (32 F): Ice days (max9319891
0 C (32 F): Frost days (min41136201356
-10 C (14 F): Days with min121019901
-20 C (-4 F): Days with min1119891
20 C (68 F): Tropical nights (min12220242

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1986.

Download the Data

  • Data for Illinois Valley Airport Oregon 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).