Tlacotepec Threshold Days by Year (MXN00012089)

9 fixed thresholds counted per year at Tlacotepec (MXN00012089): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Tlacotepec Thresholds

Tlacotepec: days with 10 mm (0.39 in) or more of precipitation in 39 years, most in 1954 with 75.
Tlacotepec: days with 25 mm (0.98 in) or more of precipitation in 30 years, most in 1973 with 21.
Tlacotepec: days with a maximum temperature at or above 30 C (86 F) in 28 years, most in 1969 with 140.
Tlacotepec: days with a maximum temperature at or above 90 F (32.2 C) in 25 years, most in 1973 with 73.
9 fixed thresholds have at least one qualifying day at Tlacotepec.

Days at or above 30 C (86 F)

28 years with a qualifying day

Days per year at Tlacotepec with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 140 in 1969.

Days at or above 30 C (86 F) per year at Tlacotepec
Year	Days	Decade average
1969	140	140
1970	107	89.7
1971	114	89.7
1972	100	89.7
1973	102	89.7
1974	85	89.7
1975	78	89.7
1976	94	89.7
1977	65	89.7
1978	77	89.7
1979	75	89.7
1980	74	68.9
1981	89	68.9
1982	64	68.9
1983	66	68.9
1984	55	68.9
1985	70	68.9
1986	70	68.9
1987	63	68.9
1994	47	47
2002	30	54
2003	47	54
2004	73	54
2005	85	54
2006	35	54
2010	11	9
2011	12	9
2012	4	9

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

First to last qualifying date each year at Tlacotepec
Year	First date	Last date
1969	1969-01-29	1969-11-18
1970	1970-01-29	1970-10-25
1971	1971-01-18	1971-10-23
1972	1972-02-13	1972-12-30
1973	1973-02-05	1973-06-14
1974	1974-03-03	1974-06-07
1975	1975-02-28	1975-06-07
1976	1976-03-02	1976-06-21
1977	1977-03-11	1977-06-01
1978	1978-02-27	1978-06-13
1979	1979-03-14	1979-06-26
1980	1980-03-08	1980-06-18
1981	1981-02-11	1981-06-06
1982	1982-03-15	1982-06-18
1983	1983-03-04	1983-06-15
1984	1984-04-01	1984-08-13
1985	1985-03-17	1985-06-12
1986	1986-03-03	1986-06-08
1987	1987-02-15	1987-06-08
1994	1994-03-08	1994-06-02
2002	2002-04-19	2002-06-01
2003	2003-04-17	2003-06-02
2004	2004-03-06	2004-05-30
2005	2005-03-11	2005-06-18
2006	2006-04-04	2006-05-27
2010	2010-05-12	2010-06-09
2011	2011-04-28	2011-05-30
2012	2012-06-01	2012-06-11

Every Fixed Threshold

Fixed thresholds at Tlacotepec
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	28	140	1969	4
35 C (95 F): Days	14	39	1970	12
90 F (32.2 C): Days	25	73	1973	11
100 F (37.8 C): Days	3	1	1974	1
20 C (68 F): Tropical nights (min	12	8	1987	8
10 mm (0.39 in): Days with 10 mm or more rain	39	75	1954	46
25 mm (0.98 in): Days with 25 mm or more rain	30	21	1973	13
50 mm (1.97 in): Days with 50 mm or more rain	24	4	1978	1
100 mm (3.94 in): Days with 100 mm or more rain	4	2	1970	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1969.

Download the Data

Data for Tlacotepec 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).

Tlacotepec Threshold Days by Year (MXN00012089)

Key Facts for Tlacotepec Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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