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

Presa Ansaldo Threshold Days by Year (MXN00009037)

6 fixed thresholds counted per year at Presa Ansaldo (MXN00009037): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Presa Ansaldo Thresholds

  • Presa Ansaldo: days with 10 mm (0.39 in) or more of precipitation in 35 years, most in 1965 with 41.
  • Presa Ansaldo: days with 25 mm (0.98 in) or more of precipitation in 35 years, most in 1981 with 16.
  • Presa Ansaldo: nights with a minimum temperature at or below 0 C (32 F) in 30 years, most in 1966 with 17.
  • Presa Ansaldo: days with a maximum temperature at or above 30 C (86 F) in 25 years, most in 1954 with 20.
  • 6 fixed thresholds have at least one qualifying day at Presa Ansaldo.
25 years with a qualifying day
Days at or above 30 C (86 F) per year at Presa Ansaldo Days per year at Presa Ansaldo with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 20 in 1954. 051015201954: 201955: 161956: 41957: 31958: 111960: 91961: 191962: 151963: 21964: 91965: 11966: 21967: 81969: 101970: 91971: 101973: 21977: 11978: 161979: 51980: 61981: 11982: 141986: 41988: 7195419571961196419671971197819811988
Days per year at Presa Ansaldo with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 20 in 1954.
Days at or above 30 C (86 F) per year at Presa Ansaldo
YearDaysDecade average
19542010.8
19551610.8
1956410.8
1957310.8
19581110.8
196098.3
1961198.3
1962158.3
196328.3
196498.3
196518.3
196628.3
196788.3
1969108.3
197097.2
1971107.2
197327.2
197717.2
1978167.2
197957.2
198066.4
198116.4
1982146.4
198646.4
198876.4
First to last qualifying date each year at Presa Ansaldo For each year, a bar from the first to the last day at Presa Ansaldo meeting 30 C (86 F). 1954: 20 March 1954 to 2 June 19541955: 17 March 1955 to 28 May 19551956: 4 April 1956 to 16 April 19561957: 18 May 1957 to 25 May 19571958: 29 March 1958 to 1 May 19581960: 28 March 1960 to 6 June 19601961: 11 April 1961 to 26 May 19611962: 26 February 1962 to 8 June 19621963: 23 April 1963 to 6 June 19631964: 6 April 1964 to 7 May 19641965: 26 May 1965 to 26 May 19651966: 16 May 1966 to 17 May 19661967: 23 April 1967 to 12 May 19671969: 23 March 1969 to 14 June 19691970: 1 April 1970 to 30 April 19701971: 22 April 1971 to 22 May 19711973: 26 May 1973 to 27 May 19731977: 18 March 1977 to 18 March 19771978: 17 April 1978 to 13 May 19781979: 23 March 1979 to 22 May 19791980: 10 March 1980 to 16 May 19801981: 3 April 1981 to 3 April 19811982: 31 March 1982 to 5 June 19821986: 13 April 1986 to 16 May 19861988: 22 April 1988 to 9 May 19881954195819631967197319801988JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Presa Ansaldo meeting 30 C (86 F).
First to last qualifying date each year at Presa Ansaldo
YearFirst dateLast date
19541954-03-201954-06-02
19551955-03-171955-05-28
19561956-04-041956-04-16
19571957-05-181957-05-25
19581958-03-291958-05-01
19601960-03-281960-06-06
19611961-04-111961-05-26
19621962-02-261962-06-08
19631963-04-231963-06-06
19641964-04-061964-05-07
19651965-05-261965-05-26
19661966-05-161966-05-17
19671967-04-231967-05-12
19691969-03-231969-06-14
19701970-04-011970-04-30
19711971-04-221971-05-22
19731973-05-261973-05-27
19771977-03-181977-03-18
19781978-04-171978-05-13
19791979-03-231979-05-22
19801980-03-101980-05-16
19811981-04-031981-04-03
19821982-03-311982-06-05
19861986-04-131986-05-16
19881988-04-221988-05-09

Every Fixed Threshold

Fixed thresholds at Presa Ansaldo
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days252019547
90 F (32.2 C): Days2219611
0 C (32 F): Frost days (min301719664
10 mm (0.39 in): Days with 10 mm or more rain3541196522
25 mm (0.98 in): Days with 25 mm or more rain351619815
50 mm (1.97 in): Days with 50 mm or more rain13419841

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1954.

Download the Data

  • Data for Presa Ansaldo 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).