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

Chalco -San Lucas- Threshold Days by Year (MXN00015020)

8 fixed thresholds counted per year at Chalco -San Lucas- (MXN00015020): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Chalco -San Lucas- Thresholds

  • Chalco -San Lucas-: days with 10 mm (0.39 in) or more of precipitation in 41 years, most in 1965 with 27.
  • Chalco -San Lucas-: days with 25 mm (0.98 in) or more of precipitation in 37 years, most in 1986 with 7.
  • Chalco -San Lucas-: nights with a minimum temperature at or below 0 C (32 F) in 33 years, most in 1973 with 81.
  • Chalco -San Lucas-: days with a maximum temperature at or above 30 C (86 F) in 17 years, most in 1983 with 36.
  • 8 fixed thresholds have at least one qualifying day at Chalco -San Lucas-.
17 years with a qualifying day
Days at or above 30 C (86 F) per year at Chalco -San Lucas- Days per year at Chalco -San Lucas- with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 36 in 1983. 0102030401969: 81970: 21971: 31972: 191973: 211974: 131975: 181976: 31978: 81981: 41982: 331983: 361984: 81985: 71986: 81987: 21988: 2196919711973197519781982198419861988
Days per year at Chalco -San Lucas- with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 36 in 1983.
Days at or above 30 C (86 F) per year at Chalco -San Lucas-
YearDaysDecade average
196988
1970210.9
1971310.9
19721910.9
19732110.9
19741310.9
19751810.9
1976310.9
1978810.9
1981412.5
19823312.5
19833612.5
1984812.5
1985712.5
1986812.5
1987212.5
1988212.5
First to last qualifying date each year at Chalco -San Lucas- For each year, a bar from the first to the last day at Chalco -San Lucas- meeting 30 C (86 F). 1969: 8 June 1969 to 18 June 19691970: 23 April 1970 to 24 April 19701971: 26 April 1971 to 19 May 19711972: 7 April 1972 to 23 May 19721973: 26 March 1973 to 5 June 19731974: 28 March 1974 to 30 May 19741975: 22 March 1975 to 9 May 19751976: 24 May 1976 to 26 May 19761978: 17 April 1978 to 13 May 19781981: 5 April 1981 to 18 May 19811982: 29 March 1982 to 20 June 19821983: 18 April 1983 to 14 June 19831984: 4 April 1984 to 3 May 19841985: 11 March 1985 to 31 May 19851986: 10 April 1986 to 16 May 19861987: 22 March 1987 to 19 April 19871988: 26 April 1988 to 10 May 1988196919721975198119841987JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Chalco -San Lucas- meeting 30 C (86 F).
First to last qualifying date each year at Chalco -San Lucas-
YearFirst dateLast date
19691969-06-081969-06-18
19701970-04-231970-04-24
19711971-04-261971-05-19
19721972-04-071972-05-23
19731973-03-261973-06-05
19741974-03-281974-05-30
19751975-03-221975-05-09
19761976-05-241976-05-26
19781978-04-171978-05-13
19811981-04-051981-05-18
19821982-03-291982-06-20
19831983-04-181983-06-14
19841984-04-041984-05-03
19851985-03-111985-05-31
19861986-04-101986-05-16
19871987-03-221987-04-19
19881988-04-261988-05-10

Every Fixed Threshold

Fixed thresholds at Chalco -San Lucas-
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days173619832
35 C (95 F): Days1419854
90 F (32.2 C): Days6419734
0 C (32 F): Frost days (min3381197311
-10 C (14 F): Days with min1119731
10 mm (0.39 in): Days with 10 mm or more rain412719658
25 mm (0.98 in): Days with 25 mm or more rain37719861
50 mm (1.97 in): Days with 50 mm or more rain5119721

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1969.

Download the Data

  • Data for Chalco -San Lucas- 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).