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Data as of 2025-12-31
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Built 2026-10-16 (16 October 2026)

Al Ahsa Threshold Days by Year

12 fixed thresholds counted per year at Al Ahsa (SAM00040420): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Al Ahsa Thresholds

  • Al Ahsa: days with a maximum temperature at or above 30 C (86 F) in 23 years, most in 2010 with 264.
  • Al Ahsa: days with a maximum temperature at or above 35 C (95 F) in 23 years, most in 2010 with 213.
  • Al Ahsa: days with a maximum temperature at or above 40 C (104 F) in 23 years, most in 2002 with 163.
  • Al Ahsa: days with a maximum temperature at or above 45 C (113 F) in 23 years, most in 2010 with 94.
  • 12 fixed thresholds have at least one qualifying day at Al Ahsa.
23 years with a qualifying day
Days at or above 30 C (86 F) per year at Al Ahsa Days per year at Al Ahsa with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 264 in 2010. 01002003001983: 2181984: 2141993: 2291994: 2281995: 2251996: 2151997: 2061999: 2342000: 2222001: 2542002: 2352003: 2402004: 2452005: 2302007: 2312008: 2312009: 2392010: 2642011: 2302016: 2272017: 2182018: 2342025: 10419831994199720012004200820112018
Days per year at Al Ahsa with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 264 in 2010.
Days at or above 30 C (86 F) per year at Al Ahsa
YearDaysDecade average
1983218216
1984214216
1993229222.8
1994228222.8
1995225222.8
1996215222.8
1997206222.8
1999234222.8
2000222236.3
2001254236.3
2002235236.3
2003240236.3
2004245236.3
2005230236.3
2007231236.3
2008231236.3
2009239236.3
2010264234.6
2011230234.6
2016227234.6
2017218234.6
2018234234.6
2025104104
First to last qualifying date each year at Al Ahsa For each year, a bar from the first to the last day at Al Ahsa meeting 30 C (86 F). 1983: 17 February 1983 to 23 November 19831984: 8 February 1984 to 24 November 19841993: 30 January 1993 to 3 December 19931994: 2 January 1994 to 19 December 19941995: 13 January 1995 to 4 December 19951996: 10 February 1996 to 8 November 19961997: 19 February 1997 to 11 November 19971999: 5 February 1999 to 26 November 19992000: 24 February 2000 to 2 December 20002001: 3 March 2001 to 20 December 20012002: 24 February 2002 to 21 December 20022003: 9 January 2003 to 28 November 20032004: 13 February 2004 to 27 November 20042005: 21 February 2005 to 23 December 20052007: 25 February 2007 to 8 December 20072008: 12 February 2008 to 23 November 20082009: 1 February 2009 to 7 December 20092010: 31 January 2010 to 13 December 20102011: 16 February 2011 to 20 November 20112016: 21 February 2016 to 31 December 20162017: 1 January 2017 to 25 December 20172018: 26 January 2018 to 24 November 20182025: 22 February 2025 to 24 August 202519831994199720012004200820112018JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Al Ahsa meeting 30 C (86 F).
First to last qualifying date each year at Al Ahsa
YearFirst dateLast date
19831983-02-171983-11-23
19841984-02-081984-11-24
19931993-01-301993-12-03
19941994-01-021994-12-19
19951995-01-131995-12-04
19961996-02-101996-11-08
19971997-02-191997-11-11
19991999-02-051999-11-26
20002000-02-242000-12-02
20012001-03-032001-12-20
20022002-02-242002-12-21
20032003-01-092003-11-28
20042004-02-132004-11-27
20052005-02-212005-12-23
20072007-02-252007-12-08
20082008-02-122008-11-23
20092009-02-012009-12-07
20102010-01-312010-12-13
20112011-02-162011-11-20
20162016-02-212016-12-31
20172017-01-012017-12-25
20182018-01-262018-11-24
20252025-02-222025-08-24

Every Fixed Threshold

Fixed thresholds at Al Ahsa
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days232642010104
35 C (95 F): Days23213201094
40 C (104 F): Days23163200284
45 C (113 F): Days2394201054
50 C (122 F): Days7420101
90 F (32.2 C): Days232342010100
100 F (37.8 C): Days23183199991
110 F (43.3 C): Days23117201064
120 F (48.9 C): Days1914201012
0 C (32 F): Frost days (min10n/a4
20 C (68 F): Tropical nights (min30n/a113
25 C (77 F): Days with min30n/a79

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 Al Ahsa 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).