Calderones Threshold Days by Year

9 fixed thresholds counted per year at Calderones (MXN00011007): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Calderones Thresholds

Calderones: days with 10 mm (0.39 in) or more of precipitation in 61 years, most in 1973 with 43.
Calderones: days with 25 mm (0.98 in) or more of precipitation in 60 years, most in 2004 with 17.
Calderones: days with a maximum temperature at or above 30 C (86 F) in 43 years, most in 1963 with 197.
Calderones: days with 50 mm (1.97 in) or more of precipitation in 38 years, most in 2000 with 6.
9 fixed thresholds have at least one qualifying day at Calderones.

Days at or above 30 C (86 F)

43 years with a qualifying day

Days per year at Calderones with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 197 in 1963.

Days at or above 30 C (86 F) per year at Calderones
Year	Days	Decade average
1962	165	136.1
1963	197	136.1
1964	160	136.1
1965	132	136.1
1966	122	136.1
1967	93	136.1
1968	92	136.1
1969	128	136.1
1970	135	30.5
1971	41	30.5
1972	2	30.5
1973	12	30.5
1975	2	30.5
1977	2	30.5
1978	47	30.5
1979	3	30.5
1980	103	24.8
1981	59	24.8
1982	13	24.8
1983	32	24.8
1984	3	24.8
1985	2	24.8
1986	10	24.8
1987	5	24.8
1988	15	24.8
1989	6	24.8
1990	4	9
1994	1	9
1998	24	9
1999	7	9
2000	1	14.2
2001	10	14.2
2002	24	14.2
2003	26	14.2
2004	14	14.2
2005	19	14.2
2006	13	14.2
2007	3	14.2
2008	16	14.2
2009	16	14.2
2010	18	16
2011	23	16
2012	7	16

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

First to last qualifying date each year at Calderones
Year	First date	Last date
1962	1962-01-17	1962-10-29
1963	1963-01-07	1963-12-01
1964	1964-03-05	1964-12-31
1965	1965-01-09	1965-12-30
1966	1966-01-02	1966-12-30
1967	1967-01-01	1967-12-17
1968	1968-02-05	1968-09-24
1969	1969-02-09	1969-12-26
1970	1970-02-24	1970-12-31
1971	1971-01-05	1971-05-23
1972	1972-04-23	1972-04-24
1973	1973-05-02	1973-06-05
1975	1975-04-16	1975-04-17
1977	1977-03-15	1977-09-03
1978	1978-04-19	1978-08-28
1979	1979-04-05	1979-04-07
1980	1980-03-08	1980-10-20
1981	1981-03-30	1981-07-04
1982	1982-03-31	1982-06-18
1983	1983-04-30	1983-10-08
1984	1984-04-30	1984-05-07
1985	1985-05-14	1985-06-01
1986	1986-04-05	1986-05-27
1987	1987-06-08	1987-06-26
1988	1988-04-16	1988-06-03
1989	1989-05-19	1989-06-09
1990	1990-05-28	1990-06-26
1994	1994-07-20	1994-07-20
1998	1998-04-15	1998-06-17
1999	1999-04-06	1999-04-24
2000	2000-04-20	2000-04-20
2001	2001-04-09	2001-07-12
2002	2002-05-01	2002-08-31
2003	2003-04-17	2003-05-20
2004	2004-04-20	2004-06-30
2005	2005-04-06	2005-06-13
2006	2006-03-13	2006-05-10
2007	2007-04-23	2007-06-03
2008	2008-04-01	2008-06-04
2009	2009-04-05	2009-06-15
2010	2010-05-06	2010-06-11
2011	2011-04-09	2011-06-15
2012	2012-05-01	2012-10-31

Every Fixed Threshold

Fixed thresholds at Calderones
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	43	197	1963	7
35 C (95 F): Days	13	50	1962	4
90 F (32.2 C): Days	23	86	1962	3
100 F (37.8 C): Days	3	14	1962	1
0 C (32 F): Frost days (min	10	4	1998	3
10 mm (0.39 in): Days with 10 mm or more rain	61	43	1973	22
25 mm (0.98 in): Days with 25 mm or more rain	60	17	2004	3
50 mm (1.97 in): Days with 50 mm or more rain	38	6	2000	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1956	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1962.

Download the Data

Data for Calderones 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Calderones Threshold Days by Year

Key Facts for Calderones Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related