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Built 2026-10-19 (19 October 2026)

Siho Chac Threshold Days by Year (MXN00004072)

12 fixed thresholds counted per year at Siho Chac (MXN00004072): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Siho Chac Thresholds

  • Siho Chac: days with a maximum temperature at or above 30 C (86 F) in 29 years, most in 1993 with 365.
  • Siho Chac: days with a maximum temperature at or above 35 C (95 F) in 29 years, most in 1992 with 267.
  • Siho Chac: days with a maximum temperature at or above 90 F (32.2 C) in 29 years, most in 1994 with 359.
  • Siho Chac: days with a maximum temperature at or above 100 F (37.8 C) in 29 years, most in 1997 with 125.
  • 12 fixed thresholds have at least one qualifying day at Siho Chac.
29 years with a qualifying day
Days at or above 30 C (86 F) per year at Siho Chac Days per year at Siho Chac with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 365 in 1993. 01002003004001983: 2981984: 3521985: 3561986: 3461987: 3431988: 3411989: 3471990: 3641991: 3611992: 3641993: 3651994: 3651995: 3531996: 3461997: 3351998: 3121999: 3362000: 3472001: 3192002: 2942003: 3162004: 3442005: 3272006: 3292007: 3272008: 3182009: 3212010: 3002011: 2791983198619891992199519982001200420072010
Days per year at Siho Chac with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 365 in 1993.
Days at or above 30 C (86 F) per year at Siho Chac
YearDaysDecade average
1983298340.4
1984352340.4
1985356340.4
1986346340.4
1987343340.4
1988341340.4
1989347340.4
1990364350.1
1991361350.1
1992364350.1
1993365350.1
1994365350.1
1995353350.1
1996346350.1
1997335350.1
1998312350.1
1999336350.1
2000347324.2
2001319324.2
2002294324.2
2003316324.2
2004344324.2
2005327324.2
2006329324.2
2007327324.2
2008318324.2
2009321324.2
2010300289.5
2011279289.5
First to last qualifying date each year at Siho Chac For each year, a bar from the first to the last day at Siho Chac meeting 30 C (86 F). 1983: 1 January 1983 to 29 December 19831984: 5 January 1984 to 31 December 19841985: 1 January 1985 to 31 December 19851986: 1 January 1986 to 31 December 19861987: 1 January 1987 to 31 December 19871988: 1 January 1988 to 31 December 19881989: 1 January 1989 to 31 December 19891990: 1 January 1990 to 31 December 19901991: 1 January 1991 to 31 December 19911992: 1 January 1992 to 31 December 19921993: 1 January 1993 to 31 December 19931994: 1 January 1994 to 31 December 19941995: 1 January 1995 to 31 December 19951996: 1 January 1996 to 31 December 19961997: 1 January 1997 to 27 December 19971998: 1 January 1998 to 10 December 19981999: 1 January 1999 to 31 December 19992000: 1 January 2000 to 27 December 20002001: 1 January 2001 to 31 December 20012002: 16 January 2002 to 31 December 20022003: 1 January 2003 to 29 December 20032004: 1 January 2004 to 31 December 20042005: 1 January 2005 to 31 December 20052006: 2 January 2006 to 31 December 20062007: 1 January 2007 to 31 December 20072008: 1 January 2008 to 31 December 20082009: 1 January 2009 to 31 December 20092010: 1 January 2010 to 31 December 20102011: 1 February 2011 to 30 December 201119831987199119951999200320072011JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Siho Chac meeting 30 C (86 F).
First to last qualifying date each year at Siho Chac
YearFirst dateLast date
19831983-01-011983-12-29
19841984-01-051984-12-31
19851985-01-011985-12-31
19861986-01-011986-12-31
19871987-01-011987-12-31
19881988-01-011988-12-31
19891989-01-011989-12-31
19901990-01-011990-12-31
19911991-01-011991-12-31
19921992-01-011992-12-31
19931993-01-011993-12-31
19941994-01-011994-12-31
19951995-01-011995-12-31
19961996-01-011996-12-31
19971997-01-011997-12-27
19981998-01-011998-12-10
19991999-01-011999-12-31
20002000-01-012000-12-27
20012001-01-012001-12-31
20022002-01-162002-12-31
20032003-01-012003-12-29
20042004-01-012004-12-31
20052005-01-012005-12-31
20062006-01-022006-12-31
20072007-01-012007-12-31
20082008-01-012008-12-31
20092009-01-012009-12-31
20102010-01-012010-12-31
20112011-02-012011-12-30

Every Fixed Threshold

Fixed thresholds at Siho Chac
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days293651993279
35 C (95 F): Days292671992112
40 C (104 F): Days2660199716
90 F (32.2 C): Days293591994204
100 F (37.8 C): Days29125199746
110 F (43.3 C): Days51019912
20 C (68 F): Tropical nights (min293232007270
25 C (77 F): Days with min22130200423
10 mm (0.39 in): Days with 10 mm or more rain2949199540
25 mm (0.98 in): Days with 25 mm or more rain2925199713
50 mm (1.97 in): Days with 50 mm or more rain26820087
100 mm (3.94 in): Days with 100 mm or more rain12520023

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 Siho Chac 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).