Tonalapa del Sur Threshold Days by Year (MXN00012092)

11 fixed thresholds counted per year at Tonalapa del Sur (MXN00012092): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Tonalapa del Sur Thresholds

Tonalapa del Sur: days with 10 mm (0.39 in) or more of precipitation in 26 years, most in 1967 with 58.
Tonalapa del Sur: days with a maximum temperature at or above 30 C (86 F) in 24 years, most in 1977 with 363.
Tonalapa del Sur: days with a maximum temperature at or above 35 C (95 F) in 24 years, most in 1977 with 263.
Tonalapa del Sur: days with a maximum temperature at or above 90 F (32.2 C) in 24 years, most in 1976 with 337.
11 fixed thresholds have at least one qualifying day at Tonalapa del Sur.

Days at or above 30 C (86 F)

24 years with a qualifying day

Days per year at Tonalapa del Sur with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 363 in 1977.

Days at or above 30 C (86 F) per year at Tonalapa del Sur
Year	Days	Decade average
1973	338	340.9
1974	360	340.9
1975	361	340.9
1976	360	340.9
1977	363	340.9
1978	295	340.9
1979	309	340.9
1980	297	316.6
1981	340	316.6
1982	359	316.6
1983	352	316.6
1984	302	316.6
1985	326	316.6
1986	226	316.6
1987	331	316.6
1990	328	330
1997	332	330
2000	344	333
2002	350	333
2006	314	333
2007	350	333
2009	307	333
2010	337	336
2012	335	336

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

First to last qualifying date each year at Tonalapa del Sur
Year	First date	Last date
1973	1973-01-01	1973-12-31
1974	1974-01-01	1974-12-31
1975	1975-01-01	1975-12-31
1976	1976-01-01	1976-12-31
1977	1977-01-01	1977-12-31
1978	1978-01-01	1978-12-31
1979	1979-01-01	1979-12-31
1980	1980-01-01	1980-12-31
1981	1981-01-01	1981-12-31
1982	1982-01-01	1982-12-31
1983	1983-01-01	1983-12-31
1984	1984-01-01	1984-12-31
1985	1985-01-01	1985-12-31
1986	1986-01-01	1986-12-31
1987	1987-01-01	1987-12-31
1990	1990-01-01	1990-12-30
1997	1997-01-01	1997-12-21
2000	2000-01-04	2000-12-31
2002	2002-01-02	2002-12-31
2006	2006-01-01	2006-11-14
2007	2007-01-01	2007-12-27
2009	2009-01-01	2009-12-31
2010	2010-01-01	2010-12-31
2012	2012-01-01	2012-11-30

Every Fixed Threshold

Fixed thresholds at Tonalapa del Sur
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	24	363	1977	335
35 C (95 F): Days	24	263	1977	63
40 C (104 F): Days	11	48	1976	2
90 F (32.2 C): Days	24	337	1976	245
100 F (37.8 C): Days	19	102	1977	2
110 F (43.3 C): Days	2	2	1976	2
20 C (68 F): Tropical nights (min	23	195	1987	82
25 C (77 F): Days with min	6	6	1978	1
10 mm (0.39 in): Days with 10 mm or more rain	26	58	1967	5
25 mm (0.98 in): Days with 25 mm or more rain	24	23	1967	2
50 mm (1.97 in): Days with 50 mm or more rain	13	5	1974	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1973.

Download the Data

Data for Tonalapa del Sur 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).

Tonalapa del Sur Threshold Days by Year (MXN00012092)

Key Facts for Tonalapa del Sur Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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