Tlacotepec Threshold Days by Year (MXN00017020)

9 fixed thresholds counted per year at Tlacotepec (MXN00017020): 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 52 years, most in 1990 with 44.
Tlacotepec: days with 25 mm (0.98 in) or more of precipitation in 52 years, most in 2009 with 18.
Tlacotepec: days with a maximum temperature at or above 30 C (86 F) in 51 years, most in 2012 with 217.
Tlacotepec: days with a maximum temperature at or above 90 F (32.2 C) in 48 years, most in 1998 with 91.
9 fixed thresholds have at least one qualifying day at Tlacotepec.

Days at or above 30 C (86 F)

51 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 217 in 2012.

Days at or above 30 C (86 F) per year at Tlacotepec
Year	Days	Decade average
1956	13	44
1957	59	44
1958	60	44
1961	57	48.4
1962	63	48.4
1963	21	48.4
1965	54	48.4
1966	28	48.4
1967	51	48.4
1968	47	48.4
1969	66	48.4
1970	69	75.2
1971	71	75.2
1972	79	75.2
1973	90	75.2
1975	82	75.2
1976	115	75.2
1977	59	75.2
1978	63	75.2
1979	49	75.2
1980	65	66.9
1981	51	66.9
1982	51	66.9
1983	78	66.9
1984	56	66.9
1987	81	66.9
1988	86	66.9
1989	67	66.9
1990	64	123.5
1991	110	123.5
1992	47	123.5
1993	96	123.5
1994	117	123.5
1995	173	123.5
1996	161	123.5
1997	192	123.5
1998	158	123.5
1999	117	123.5
2000	124	111.4
2001	126	111.4
2002	111	111.4
2003	119	111.4
2004	94	111.4
2005	125	111.4
2006	94	111.4
2007	92	111.4
2008	104	111.4
2009	125	111.4
2010	102	147
2011	122	147
2012	217	147

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
1956	1956-03-30	1956-05-01
1957	1957-03-18	1957-07-10
1958	1958-03-04	1958-10-07
1961	1961-03-06	1961-06-01
1962	1962-02-21	1962-08-04
1963	1963-03-05	1963-11-19
1965	1965-03-09	1965-06-05
1966	1966-02-28	1966-06-16
1967	1967-03-04	1967-11-26
1968	1968-02-26	1968-08-12
1969	1969-02-24	1969-06-19
1970	1970-02-25	1970-06-07
1971	1971-01-24	1971-07-30
1972	1972-01-25	1972-10-20
1973	1973-02-05	1973-06-07
1975	1975-02-12	1975-12-16
1976	1976-02-09	1976-08-11
1977	1977-03-04	1977-06-29
1978	1978-03-02	1978-06-02
1979	1979-03-13	1979-05-19
1980	1980-03-07	1980-07-16
1981	1981-03-01	1981-06-05
1982	1982-02-09	1982-09-02
1983	1983-03-03	1983-06-20
1984	1984-02-24	1984-06-01
1987	1987-02-22	1987-11-09
1988	1988-02-04	1988-06-14
1989	1989-01-14	1989-06-23
1990	1990-01-14	1990-08-22
1991	1991-01-19	1991-07-31
1992	1992-03-06	1992-10-28
1993	1993-01-21	1993-11-24
1994	1994-02-12	1994-12-31
1995	1995-01-01	1995-12-18
1996	1996-01-24	1996-12-29
1997	1997-01-05	1997-12-11
1998	1998-02-17	1998-11-19
1999	1999-01-30	1999-08-14
2000	2000-01-26	2000-11-29
2001	2001-01-14	2001-12-31
2002	2002-01-27	2002-08-31
2003	2003-01-10	2003-08-11
2004	2004-02-11	2004-07-30
2005	2005-01-03	2005-12-14
2006	2006-02-01	2006-07-12
2007	2007-02-02	2007-12-28
2008	2008-01-23	2008-12-28
2009	2009-01-24	2009-10-08
2010	2010-03-06	2010-11-22
2011	2011-01-04	2011-11-22
2012	2012-01-17	2012-11-30

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	51	217	2012	217
35 C (95 F): Days	31	62	1998	2
90 F (32.2 C): Days	48	91	1998	63
100 F (37.8 C): Days	3	11	1998	1
20 C (68 F): Tropical nights (min	3	1	1995	1
10 mm (0.39 in): Days with 10 mm or more rain	52	44	1990	34
25 mm (0.98 in): Days with 25 mm or more rain	52	18	2009	13
50 mm (1.97 in): Days with 50 mm or more rain	40	5	2003	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	2011	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1956.

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 (MXN00017020)

Key Facts for Tlacotepec Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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