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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Presa San Ildefonso Threshold Days by Year (MXN00015190)

8 fixed thresholds counted per year at Presa San Ildefonso (MXN00015190): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Presa San Ildefonso Thresholds

  • Presa San Ildefonso: days with 10 mm (0.39 in) or more of precipitation in 58 years, most in 1958 with 44.
  • Presa San Ildefonso: days with 25 mm (0.98 in) or more of precipitation in 58 years, most in 1958 with 15.
  • Presa San Ildefonso: nights with a minimum temperature at or below 0 C (32 F) in 55 years, most in 2004 with 23.
  • Presa San Ildefonso: days with a maximum temperature at or above 30 C (86 F) in 50 years, most in 1998 with 71.
  • 8 fixed thresholds have at least one qualifying day at Presa San Ildefonso.
50 years with a qualifying day
Days at or above 30 C (86 F) per year at Presa San Ildefonso Days per year at Presa San Ildefonso with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 71 in 1998. 0204060801952: 21953: 41954: 31956: 51957: 61958: 41960: 111961: 91962: 101963: 71964: 171965: 31966: 61967: 71968: 11969: 211970: 241971: 121972: 111973: 171974: 71975: 141977: 31978: 71979: 31980: 21981: 31982: 211983: 161984: 131985: 31986: 111987: 21988: 161990: 51991: 381994: 121995: 281996: 121998: 711999: 232000: 122001: 172002: 192003: 362004: 32005: 332006: 162007: 202008: 291952195819641969197419801985199119992004
Days per year at Presa San Ildefonso with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 71 in 1998.
Days at or above 30 C (86 F) per year at Presa San Ildefonso
YearDaysDecade average
195224
195344
195434
195654
195764
195844
1960119.2
196199.2
1962109.2
196379.2
1964179.2
196539.2
196669.2
196779.2
196819.2
1969219.2
19702410.9
19711210.9
19721110.9
19731710.9
1974710.9
19751410.9
1977310.9
1978710.9
1979310.9
198029.7
198139.7
1982219.7
1983169.7
1984139.7
198539.7
1986119.7
198729.7
1988169.7
1990527
19913827
19941227
19952827
19961227
19987127
19992327
20001220.6
20011720.6
20021920.6
20033620.6
2004320.6
20053320.6
20061620.6
20072020.6
20082920.6
First to last qualifying date each year at Presa San Ildefonso For each year, a bar from the first to the last day at Presa San Ildefonso meeting 30 C (86 F). 1952: 10 May 1952 to 23 May 19521953: 1 May 1953 to 18 May 19531954: 21 March 1954 to 8 May 19541956: 31 March 1956 to 18 April 19561957: 25 April 1957 to 24 May 19571958: 29 March 1958 to 30 April 19581960: 28 March 1960 to 5 June 19601961: 14 April 1961 to 14 May 19611962: 26 February 1962 to 8 June 19621963: 11 April 1963 to 27 April 19631964: 5 April 1964 to 8 May 19641965: 8 May 1965 to 26 May 19651966: 12 May 1966 to 18 May 19661967: 24 April 1967 to 13 May 19671968: 8 June 1968 to 8 June 19681969: 10 April 1969 to 19 June 19691970: 31 March 1970 to 30 May 19701971: 22 April 1971 to 23 May 19711972: 7 April 1972 to 24 May 19721973: 11 March 1973 to 4 June 19731974: 8 May 1974 to 16 May 19741975: 1 April 1975 to 7 May 19751977: 17 March 1977 to 1 April 19771978: 18 April 1978 to 12 May 19781979: 2 May 1979 to 22 May 19791980: 11 March 1980 to 10 May 19801981: 31 March 1981 to 10 June 19811982: 31 March 1982 to 20 June 19821983: 19 April 1983 to 13 June 19831984: 29 March 1984 to 8 May 19841985: 12 May 1985 to 14 May 19851986: 3 April 1986 to 17 May 19861987: 18 April 1987 to 27 May 19871988: 21 April 1988 to 31 May 19881990: 2 May 1990 to 31 May 19901991: 2 January 1991 to 4 June 19911994: 21 March 1994 to 9 May 19941995: 24 March 1995 to 9 June 19951996: 2 May 1996 to 30 May 19961998: 5 March 1998 to 19 June 19981999: 2 April 1999 to 5 June 19992000: 31 March 2000 to 19 May 20002001: 14 March 2001 to 22 May 20012002: 21 March 2002 to 18 June 20022003: 5 March 2003 to 23 May 20032004: 22 April 2004 to 27 May 20042005: 27 March 2005 to 19 June 20052006: 13 March 2006 to 18 June 20062007: 19 April 2007 to 9 June 20072008: 30 March 2008 to 6 June 200819521961196819751983199120012008JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Presa San Ildefonso meeting 30 C (86 F).
First to last qualifying date each year at Presa San Ildefonso
YearFirst dateLast date
19521952-05-101952-05-23
19531953-05-011953-05-18
19541954-03-211954-05-08
19561956-03-311956-04-18
19571957-04-251957-05-24
19581958-03-291958-04-30
19601960-03-281960-06-05
19611961-04-141961-05-14
19621962-02-261962-06-08
19631963-04-111963-04-27
19641964-04-051964-05-08
19651965-05-081965-05-26
19661966-05-121966-05-18
19671967-04-241967-05-13
19681968-06-081968-06-08
19691969-04-101969-06-19
19701970-03-311970-05-30
19711971-04-221971-05-23
19721972-04-071972-05-24
19731973-03-111973-06-04
19741974-05-081974-05-16
19751975-04-011975-05-07
19771977-03-171977-04-01
19781978-04-181978-05-12
19791979-05-021979-05-22
19801980-03-111980-05-10
19811981-03-311981-06-10
19821982-03-311982-06-20
19831983-04-191983-06-13
19841984-03-291984-05-08
19851985-05-121985-05-14
19861986-04-031986-05-17
19871987-04-181987-05-27
19881988-04-211988-05-31
19901990-05-021990-05-31
19911991-01-021991-06-04
19941994-03-211994-05-09
19951995-03-241995-06-09
19961996-05-021996-05-30
19981998-03-051998-06-19
19991999-04-021999-06-05
20002000-03-312000-05-19
20012001-03-142001-05-22
20022002-03-212002-06-18
20032003-03-052003-05-23
20042004-04-222004-05-27
20052005-03-272005-06-19
20062006-03-132006-06-18
20072007-04-192007-06-09
20082008-03-302008-06-06

Every Fixed Threshold

Fixed thresholds at Presa San Ildefonso
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days5071199829
35 C (95 F): Days1219982
90 F (32.2 C): Days132219982
0 C (32 F): Frost days (min5523200414
10 mm (0.39 in): Days with 10 mm or more rain5844195828
25 mm (0.98 in): Days with 25 mm or more rain581519585
50 mm (1.97 in): Days with 50 mm or more rain40519711
100 mm (3.94 in): Days with 100 mm or more rain1119831

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1952.

Download the Data

  • Data for Presa San Ildefonso 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 . Last revised (2025-12-31).