Dzan Threshold Days by Year (MXN00031009)

11 fixed thresholds counted per year at Dzan (MXN00031009): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Dzan Thresholds

Dzan: days with 10 mm (0.39 in) or more of precipitation in 40 years, most in 1995 with 57.
Dzan: days with 25 mm (0.98 in) or more of precipitation in 40 years, most in 1994 with 32.
Dzan: days with 50 mm (1.97 in) or more of precipitation in 40 years, most in 1992 with 15.
Dzan: nights with a minimum temperature at or above 20 C (68 F) in 35 years, most in 2000 with 288.
11 fixed thresholds have at least one qualifying day at Dzan.

Days at or above 30 C (86 F)

33 years with a qualifying day

Days per year at Dzan with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 364 in 1991.

Days at or above 30 C (86 F) per year at Dzan
Year	Days	Decade average
1967	312	301.5
1968	291	301.5
1970	307	311.6
1971	329	311.6
1972	340	311.6
1973	318	311.6
1974	301	311.6
1975	283	311.6
1976	297	311.6
1977	298	311.6
1978	330	311.6
1979	313	311.6
1980	262	315.3
1981	264	315.3
1982	337	315.3
1983	308	315.3
1984	321	315.3
1985	330	315.3
1986	324	315.3
1987	332	315.3
1988	329	315.3
1989	346	315.3
1990	356	351.7
1991	364	351.7
1992	335	351.7
2000	360	293.4
2001	353	293.4
2002	241	293.4
2003	266	293.4
2004	217	293.4
2005	315	293.4
2006	292	293.4
2007	303	293.4

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

First to last qualifying date each year at Dzan
Year	First date	Last date
1967	1967-01-01	1967-12-31
1968	1968-01-01	1968-12-31
1970	1970-01-02	1970-12-31
1971	1971-01-01	1971-12-31
1972	1972-01-01	1972-12-31
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	1979-12-30
1980	1980-01-08	1980-11-23
1981	1981-01-09	1981-12-31
1982	1982-01-01	1982-12-31
1983	1983-01-01	1983-12-29
1984	1984-01-08	1984-12-31
1985	1985-01-01	1985-12-31
1986	1986-01-01	1986-12-31
1987	1987-01-04	1987-12-31
1988	1988-01-01	1988-12-31
1989	1989-01-01	1989-12-30
1990	1990-01-01	1990-12-31
1991	1991-01-01	1991-12-31
1992	1992-01-01	1992-12-31
2000	2000-01-01	2000-12-31
2001	2001-01-01	2001-12-31
2002	2002-01-01	2002-09-01
2003	2003-02-02	2003-12-31
2004	2004-01-01	2004-12-31
2005	2005-01-01	2005-12-31
2006	2006-01-01	2006-12-31
2007	2007-01-01	2007-12-31

Every Fixed Threshold

Fixed thresholds at Dzan
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	33	364	1991	303
35 C (95 F): Days	33	279	1991	149
40 C (104 F): Days	20	25	1987	5
90 F (32.2 C): Days	33	349	1991	231
100 F (37.8 C): Days	29	68	1982	44
20 C (68 F): Tropical nights (min	35	288	2000	228
25 C (77 F): Days with min	18	35	2001	2
10 mm (0.39 in): Days with 10 mm or more rain	40	57	1995	39
25 mm (0.98 in): Days with 25 mm or more rain	40	32	1994	21
50 mm (1.97 in): Days with 50 mm or more rain	40	15	1992	4
100 mm (3.94 in): Days with 100 mm or more rain	11	2	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 1967.

Download the Data

Data for Dzan 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).

Dzan Threshold Days by Year (MXN00031009)

Key Facts for Dzan Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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