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Built 2026-10-19 (19 October 2026)

Ameca la Vieja Threshold Days by Year (MXN00032103)

11 fixed thresholds counted per year at Ameca la Vieja (MXN00032103): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ameca la Vieja Thresholds

  • Ameca la Vieja: days with 10 mm (0.39 in) or more of precipitation in 22 years, most in 1984 with 26.
  • Ameca la Vieja: days with 25 mm (0.98 in) or more of precipitation in 22 years, most in 2000 with 7.
  • Ameca la Vieja: days with a maximum temperature at or above 30 C (86 F) in 21 years, most in 2011 with 166.
  • Ameca la Vieja: days with a maximum temperature at or above 90 F (32.2 C) in 21 years, most in 2011 with 67.
  • 11 fixed thresholds have at least one qualifying day at Ameca la Vieja.
21 years with a qualifying day
Days at or above 30 C (86 F) per year at Ameca la Vieja Days per year at Ameca la Vieja with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 166 in 2011. 0501001502001977: 701978: 881982: 1001983: 661984: 561985: 481988: 681991: 1301995: 1251996: 981997: 1001998: 1051999: 982000: 982001: 802006: 982007: 732009: 1032010: 812011: 1662012: 1071977198319881996199920062010
Days per year at Ameca la Vieja with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 166 in 2011.
Days at or above 30 C (86 F) per year at Ameca la Vieja
YearDaysDecade average
19777079
19788879
198210067.6
19836667.6
19845667.6
19854867.6
19886867.6
1991130109.3
1995125109.3
199698109.3
1997100109.3
1998105109.3
199998109.3
20009890.4
20018090.4
20069890.4
20077390.4
200910390.4
201081118
2011166118
2012107118
First to last qualifying date each year at Ameca la Vieja For each year, a bar from the first to the last day at Ameca la Vieja meeting 30 C (86 F). 1977: 15 March 1977 to 29 October 19771978: 30 March 1978 to 12 December 19781982: 23 February 1982 to 27 October 19821983: 16 April 1983 to 11 October 19831984: 14 March 1984 to 15 November 19841985: 27 April 1985 to 15 November 19851988: 27 February 1988 to 7 November 19881991: 12 February 1991 to 5 November 19911995: 21 March 1995 to 8 December 19951996: 20 February 1996 to 7 November 19961997: 17 March 1997 to 3 November 19971998: 23 February 1998 to 29 October 19981999: 9 February 1999 to 1 November 19992000: 25 January 2000 to 5 October 20002001: 18 February 2001 to 20 October 20012006: 17 February 2006 to 21 October 20062007: 16 March 2007 to 18 October 20072009: 23 February 2009 to 16 October 20092010: 5 April 2010 to 2 November 20102011: 15 February 2011 to 1 November 20112012: 3 March 2012 to 29 October 20121977198319881996199920062010JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Ameca la Vieja meeting 30 C (86 F).
First to last qualifying date each year at Ameca la Vieja
YearFirst dateLast date
19771977-03-151977-10-29
19781978-03-301978-12-12
19821982-02-231982-10-27
19831983-04-161983-10-11
19841984-03-141984-11-15
19851985-04-271985-11-15
19881988-02-271988-11-07
19911991-02-121991-11-05
19951995-03-211995-12-08
19961996-02-201996-11-07
19971997-03-171997-11-03
19981998-02-231998-10-29
19991999-02-091999-11-01
20002000-01-252000-10-05
20012001-02-182001-10-20
20062006-02-172006-10-21
20072007-03-162007-10-18
20092009-02-232009-10-16
20102010-04-052010-11-02
20112011-02-152011-11-01
20122012-03-032012-10-29

Every Fixed Threshold

Fixed thresholds at Ameca la Vieja
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days211662011107
35 C (95 F): Days1955199115
40 C (104 F): Days1119881
90 F (32.2 C): Days2167201141
100 F (37.8 C): Days31719911
0 C (32 F): Frost days (min216220109
-10 C (14 F): Days with min1119971
20 C (68 F): Tropical nights (min4519914
10 mm (0.39 in): Days with 10 mm or more rain2226198414
25 mm (0.98 in): Days with 25 mm or more rain22720003
50 mm (1.97 in): Days with 50 mm or more rain6119841

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1977.

Download the Data

  • Data for Ameca la Vieja 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).