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

Sitala Threshold Days by Year

9 fixed thresholds counted per year at Sitala (MXN00007389): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sitala Thresholds

  • Sitala: days with 10 mm (0.39 in) or more of precipitation in 24 years, most in 1985 with 78.
  • Sitala: days with 25 mm (0.98 in) or more of precipitation in 24 years, most in 2008 with 33.
  • Sitala: days with 50 mm (1.97 in) or more of precipitation in 22 years, most in 1990 with 7.
  • Sitala: days with a maximum temperature at or above 30 C (86 F) in 20 years, most in 1991 with 272.
  • 9 fixed thresholds have at least one qualifying day at Sitala.
20 years with a qualifying day
Days at or above 30 C (86 F) per year at Sitala Days per year at Sitala with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 272 in 1991. 01002003001985: 151986: 431987: 641988: 421989: 231990: 641991: 2721992: 2051999: 562000: 202001: 272003: 1122004: 912005: 1092006: 972007: 942008: 822009: 1252011: 602012: 431985198719891991199920012004200620082011
Days per year at Sitala with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 272 in 1991.
Days at or above 30 C (86 F) per year at Sitala
YearDaysDecade average
19851537.4
19864337.4
19876437.4
19884237.4
19892337.4
199064149.3
1991272149.3
1992205149.3
199956149.3
20002084.1
20012784.1
200311284.1
20049184.1
200510984.1
20069784.1
20079484.1
20088284.1
200912584.1
20116051.5
20124351.5
First to last qualifying date each year at Sitala For each year, a bar from the first to the last day at Sitala meeting 30 C (86 F). 1985: 20 March 1985 to 18 May 19851986: 10 March 1986 to 13 October 19861987: 15 February 1987 to 17 December 19871988: 3 March 1988 to 28 November 19881989: 1 March 1989 to 26 September 19891990: 1 January 1990 to 31 December 19901991: 10 January 1991 to 17 December 19911992: 13 January 1992 to 31 December 19921999: 2 January 1999 to 27 June 19992000: 15 March 2000 to 4 August 20002001: 2 March 2001 to 28 November 20012003: 6 February 2003 to 21 December 20032004: 26 January 2004 to 23 December 20042005: 13 January 2005 to 31 December 20052006: 1 January 2006 to 30 December 20062007: 1 February 2007 to 18 December 20072008: 2 January 2008 to 10 December 20082009: 20 January 2009 to 24 December 20092011: 1 January 2011 to 22 December 20112012: 14 February 2012 to 28 December 20121985198819912000200420072011JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Sitala meeting 30 C (86 F).
First to last qualifying date each year at Sitala
YearFirst dateLast date
19851985-03-201985-05-18
19861986-03-101986-10-13
19871987-02-151987-12-17
19881988-03-031988-11-28
19891989-03-011989-09-26
19901990-01-011990-12-31
19911991-01-101991-12-17
19921992-01-131992-12-31
19991999-01-021999-06-27
20002000-03-152000-08-04
20012001-03-022001-11-28
20032003-02-062003-12-21
20042004-01-262004-12-23
20052005-01-132005-12-31
20062006-01-012006-12-30
20072007-02-012007-12-18
20082008-01-022008-12-10
20092009-01-202009-12-24
20112011-01-012011-12-22
20122012-02-142012-12-28

Every Fixed Threshold

Fixed thresholds at Sitala
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days20272199143
35 C (95 F): Days123719913
90 F (32.2 C): Days1811619912
100 F (37.8 C): Days1119911
20 C (68 F): Tropical nights (min51019871
10 mm (0.39 in): Days with 10 mm or more rain2478198546
25 mm (0.98 in): Days with 25 mm or more rain2433200816
50 mm (1.97 in): Days with 50 mm or more rain22719906
100 mm (3.94 in): Days with 100 mm or more rain4219991

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1985.

Download the Data

  • Data for Sitala 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).