Piedras Blancas Threshold Days by Year (MXN00016039)

13 fixed thresholds counted per year at Piedras Blancas (MXN00016039): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Piedras Blancas Thresholds

Piedras Blancas: days with a maximum temperature at or above 30 C (86 F) in 48 years, most in 1987 with 364.
Piedras Blancas: days with a maximum temperature at or above 35 C (95 F) in 48 years, most in 2005 with 332.
Piedras Blancas: days with a maximum temperature at or above 40 C (104 F) in 48 years, most in 2002 with 99.
Piedras Blancas: days with a maximum temperature at or above 90 F (32.2 C) in 48 years, most in 2003 with 356.
13 fixed thresholds have at least one qualifying day at Piedras Blancas.

Days at or above 30 C (86 F)

48 years with a qualifying day

Days per year at Piedras Blancas with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 364 in 1987.

Days at or above 30 C (86 F) per year at Piedras Blancas
Year	Days	Decade average
1961	359	351.6
1962	357	351.6
1963	358	351.6
1964	329	351.6
1965	354	351.6
1966	355	351.6
1967	348	351.6
1968	348	351.6
1969	356	351.6
1970	359	343.2
1972	361	343.2
1973	353	343.2
1974	359	343.2
1975	318	343.2
1976	295	343.2
1977	345	343.2
1978	343	343.2
1979	356	343.2
1980	363	353.3
1981	347	353.3
1982	331	353.3
1983	350	353.3
1985	360	353.3
1986	353	353.3
1987	364	353.3
1988	355	353.3
1989	357	353.3
1990	359	353
1991	357	353
1992	334	353
1993	358	353
1994	332	353
1996	355	353
1997	359	353
1998	361	353
1999	362	353
2000	363	358.6
2001	362	358.6
2002	351	358.6
2003	361	358.6
2004	350	358.6
2005	360	358.6
2006	360	358.6
2007	357	358.6
2008	363	358.6
2009	359	358.6
2010	354	357.5
2011	361	357.5

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

First to last qualifying date each year at Piedras Blancas
Year	First date	Last date
1961	1961-01-01	1961-12-31
1962	1962-01-01	1962-12-31
1963	1963-01-01	1963-12-31
1964	1964-01-01	1964-12-31
1965	1965-01-01	1965-12-31
1966	1966-01-01	1966-12-31
1967	1967-01-01	1967-12-31
1968	1968-01-01	1968-12-31
1969	1969-01-01	1969-12-30
1970	1970-01-01	1970-12-31
1972	1972-01-01	1972-12-31
1973	1973-01-01	1973-12-31
1974	1974-01-01	1974-12-31
1975	1975-02-01	1975-12-31
1976	1976-01-01	1976-12-31
1977	1977-01-02	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	1982-02-01	1982-12-31
1983	1983-01-02	1983-12-31
1985	1985-01-01	1985-12-31
1986	1986-01-01	1986-12-31
1987	1987-01-01	1987-12-31
1988	1988-01-01	1988-12-31
1989	1989-01-01	1989-12-31
1990	1990-01-01	1990-12-31
1991	1991-01-01	1991-12-31
1992	1992-01-01	1992-12-31
1993	1993-01-01	1993-12-31
1994	1994-02-01	1994-12-31
1996	1996-01-01	1996-12-31
1997	1997-01-01	1997-12-31
1998	1998-01-01	1998-12-31
1999	1999-01-01	1999-12-31
2000	2000-01-01	2000-12-31
2001	2001-01-01	2001-12-31
2002	2002-01-01	2002-12-31
2003	2003-01-01	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
2008	2008-01-01	2008-12-31
2009	2009-01-01	2009-12-31
2010	2010-01-01	2010-12-31
2011	2011-01-01	2011-12-31

Every Fixed Threshold

Fixed thresholds at Piedras Blancas
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	48	364	1987	361
35 C (95 F): Days	48	332	2005	309
40 C (104 F): Days	48	99	2002	80
45 C (113 F): Days	2	3	1987	3
90 F (32.2 C): Days	48	356	2003	348
100 F (37.8 C): Days	48	213	2005	137
110 F (43.3 C): Days	21	7	1987	2
20 C (68 F): Tropical nights (min	48	282	1965	182
25 C (77 F): Days with min	39	40	1982	3
10 mm (0.39 in): Days with 10 mm or more rain	48	49	1991	13
25 mm (0.98 in): Days with 25 mm or more rain	48	11	1976	8
50 mm (1.97 in): Days with 50 mm or more rain	35	6	1976	2
100 mm (3.94 in): Days with 100 mm or more rain	4	1	1968	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1961.

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Data for Piedras Blancas 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).

Piedras Blancas Threshold Days by Year (MXN00016039)

Key Facts for Piedras Blancas Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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