Calacoaya Threshold Days by Year (MXN00015013)

10 fixed thresholds counted per year at Calacoaya (MXN00015013): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Calacoaya Thresholds

Calacoaya: days with 10 mm (0.39 in) or more of precipitation in 42 years, most in 1976 with 37.
Calacoaya: days with 25 mm (0.98 in) or more of precipitation in 42 years, most in 2000 with 12.
Calacoaya: days with a maximum temperature at or above 30 C (86 F) in 39 years, most in 1998 with 85.
Calacoaya: nights with a minimum temperature at or below 0 C (32 F) in 34 years, most in 1965 with 28.
10 fixed thresholds have at least one qualifying day at Calacoaya.

Days at or above 30 C (86 F)

39 years with a qualifying day

Days per year at Calacoaya with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 85 in 1998.

Days at or above 30 C (86 F) per year at Calacoaya
Year	Days	Decade average
1961	16	13.7
1962	11	13.7
1963	16	13.7
1964	23	13.7
1965	5	13.7
1966	15	13.7
1967	14	13.7
1968	4	13.7
1969	19	13.7
1970	22	13.1
1971	18	13.1
1972	9	13.1
1973	25	13.1
1974	7	13.1
1975	10	13.1
1977	12	13.1
1978	14	13.1
1979	1	13.1
1980	6	13
1981	2	13
1982	16	13
1983	34	13
1984	18	13
1985	3	13
1986	10	13
1988	15	13
1997	10	47.5
1998	85	47.5
2000	13	31.2
2001	19	31.2
2002	39	31.2
2003	50	31.2
2004	9	31.2
2005	53	31.2
2007	17	31.2
2008	30	31.2
2009	51	31.2
2011	67	52.5
2012	38	52.5

For each year, a bar from the first to the last day at Calacoaya meeting 30 C (86 F).

First to last qualifying date each year at Calacoaya
Year	First date	Last date
1961	1961-04-13	1961-05-16
1962	1962-05-21	1962-06-16
1963	1963-04-11	1963-06-08
1964	1964-03-10	1964-05-09
1965	1965-05-26	1965-06-04
1966	1966-05-11	1966-09-30
1967	1967-04-22	1967-05-13
1968	1968-05-27	1968-05-31
1969	1969-03-23	1969-06-13
1970	1970-03-24	1970-05-01
1971	1971-04-21	1971-05-27
1972	1972-04-07	1972-05-23
1973	1973-03-11	1973-06-06
1974	1974-04-21	1974-05-15
1975	1975-03-29	1975-04-26
1977	1977-03-17	1977-06-06
1978	1978-04-17	1978-05-12
1979	1979-04-12	1979-04-12
1980	1980-03-10	1980-06-16
1981	1981-04-03	1981-05-09
1982	1982-03-31	1982-06-18
1983	1983-04-05	1983-06-13
1984	1984-03-28	1984-05-07
1985	1985-05-12	1985-05-14
1986	1986-04-03	1986-05-16
1988	1988-04-21	1988-06-03
1997	1997-03-01	1997-06-17
1998	1998-03-06	1998-07-14
2000	2000-03-28	2000-05-26
2001	2001-04-02	2001-05-28
2002	2002-03-16	2002-06-17
2003	2003-02-27	2003-06-13
2004	2004-04-18	2004-05-30
2005	2005-03-22	2005-06-18
2007	2007-02-27	2007-06-13
2008	2008-03-17	2008-06-04
2009	2009-03-30	2009-08-02
2011	2011-03-25	2011-08-18
2012	2012-04-02	2012-06-14

Every Fixed Threshold

Fixed thresholds at Calacoaya
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	39	85	1998	38
35 C (95 F): Days	5	18	2011	1
40 C (104 F): Days	1	9	2011	9
90 F (32.2 C): Days	19	29	1998	8
100 F (37.8 C): Days	1	13	2011	13
110 F (43.3 C): Days	1	2	2011	2
0 C (32 F): Frost days (min	34	28	1965	1
10 mm (0.39 in): Days with 10 mm or more rain	42	37	1976	26
25 mm (0.98 in): Days with 25 mm or more rain	42	12	2000	5
50 mm (1.97 in): Days with 50 mm or more rain	22	2	1969	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1961.

Download the Data

Data for Calacoaya 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Calacoaya Threshold Days by Year (MXN00015013)

Key Facts for Calacoaya Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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