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Built 2026-10-19 (19 October 2026)

Apan (Smn) Threshold Days by Year (MXN00013045)

7 fixed thresholds counted per year at Apan (Smn) (MXN00013045): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Apan (Smn) Thresholds

  • Apan (Smn): nights with a minimum temperature at or below 0 C (32 F) in 30 years, most in 1955 with 85.
  • Apan (Smn): days with 10 mm (0.39 in) or more of precipitation in 30 years, most in 1959 with 26.
  • Apan (Smn): days with 25 mm (0.98 in) or more of precipitation in 28 years, most in 1959 with 8.
  • Apan (Smn): days with a maximum temperature at or above 30 C (86 F) in 25 years, most in 1956 with 30.
  • 7 fixed thresholds have at least one qualifying day at Apan (Smn).
25 years with a qualifying day
Days at or above 30 C (86 F) per year at Apan (Smn) Days per year at Apan (Smn) with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 30 in 1956. 01020301955: 171956: 301957: 11958: 211959: 21960: 171961: 101962: 101963: 71964: 71965: 11966: 11967: 41969: 41971: 81972: 31973: 61975: 111977: 61978: 61980: 31982: 41983: 301984: 41985: 4195519581961196419671972197719821985
Days per year at Apan (Smn) with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 30 in 1956.
Days at or above 30 C (86 F) per year at Apan (Smn)
YearDaysDecade average
19551714.2
19563014.2
1957114.2
19582114.2
1959214.2
1960176.8
1961106.8
1962106.8
196376.8
196476.8
196516.8
196616.8
196746.8
196946.8
197186.7
197236.7
197366.7
1975116.7
197766.7
197866.7
198039
198249
1983309
198449
198549
First to last qualifying date each year at Apan (Smn) For each year, a bar from the first to the last day at Apan (Smn) meeting 30 C (86 F). 1955: 6 April 1955 to 23 May 19551956: 9 May 1956 to 16 September 19561957: 23 May 1957 to 23 May 19571958: 28 March 1958 to 3 June 19581959: 26 March 1959 to 20 April 19591960: 29 March 1960 to 29 June 19601961: 17 April 1961 to 30 May 19611962: 23 May 1962 to 8 June 19621963: 20 March 1963 to 7 June 19631964: 6 April 1964 to 5 May 19641965: 24 March 1965 to 24 March 19651966: 15 May 1966 to 15 May 19661967: 10 May 1967 to 13 May 19671969: 8 May 1969 to 19 June 19691971: 24 April 1971 to 22 May 19711972: 7 April 1972 to 15 April 19721973: 21 April 1973 to 4 June 19731975: 22 March 1975 to 9 May 19751977: 15 March 1977 to 7 July 19771978: 18 April 1978 to 10 May 19781980: 11 March 1980 to 31 May 19801982: 1 April 1982 to 6 April 19821983: 21 April 1983 to 12 June 19831984: 27 April 1984 to 2 May 19841985: 13 May 1985 to 16 May 19851955195919631967197319801985JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Apan (Smn) meeting 30 C (86 F).
First to last qualifying date each year at Apan (Smn)
YearFirst dateLast date
19551955-04-061955-05-23
19561956-05-091956-09-16
19571957-05-231957-05-23
19581958-03-281958-06-03
19591959-03-261959-04-20
19601960-03-291960-06-29
19611961-04-171961-05-30
19621962-05-231962-06-08
19631963-03-201963-06-07
19641964-04-061964-05-05
19651965-03-241965-03-24
19661966-05-151966-05-15
19671967-05-101967-05-13
19691969-05-081969-06-19
19711971-04-241971-05-22
19721972-04-071972-04-15
19731973-04-211973-06-04
19751975-03-221975-05-09
19771977-03-151977-07-07
19781978-04-181978-05-10
19801980-03-111980-05-31
19821982-04-011982-04-06
19831983-04-211983-06-12
19841984-04-271984-05-02
19851985-05-131985-05-16

Every Fixed Threshold

Fixed thresholds at Apan (Smn)
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days253019564
90 F (32.2 C): Days2219832
0 C (32 F): Frost days (min3085195583
-10 C (14 F): Days with min3319562
10 mm (0.39 in): Days with 10 mm or more rain3026195916
25 mm (0.98 in): Days with 25 mm or more rain28819592
50 mm (1.97 in): Days with 50 mm or more rain6119551

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1955.

Download the Data

  • Data for Apan (Smn) 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).