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Built 2026-10-19 (19 October 2026)

Silacayoapam (Smn) Threshold Days by Year (MXN00020141)

13 fixed thresholds counted per year at Silacayoapam (Smn) (MXN00020141): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Silacayoapam (Smn) Thresholds

  • Silacayoapam (Smn): days with 10 mm (0.39 in) or more of precipitation in 45 years, most in 1977 with 49.
  • Silacayoapam (Smn): days with 25 mm (0.98 in) or more of precipitation in 44 years, most in 1998 with 18.
  • Silacayoapam (Smn): days with a maximum temperature at or above 30 C (86 F) in 37 years, most in 1979 with 335.
  • Silacayoapam (Smn): days with a maximum temperature at or above 90 F (32.2 C) in 35 years, most in 1978 with 277.
  • 13 fixed thresholds have at least one qualifying day at Silacayoapam (Smn).
37 years with a qualifying day
Days at or above 30 C (86 F) per year at Silacayoapam (Smn) Days per year at Silacayoapam (Smn) with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 335 in 1979. 01002003004001958: 2681959: 1641960: 2231961: 2281962: 2631963: 2111964: 2021965: 2531966: 2421967: 2061968: 2041969: 2301970: 1991971: 1771972: 2431973: 1681974: 1071975: 1011976: 1251977: 1161978: 3141979: 3351980: 3121981: 2721982: 2711983: 2171984: 1481985: 1631986: 1291987: 1501988: 2181995: 961996: 291997: 151998: 1261999: 722000: 501958196219661970197419781982198619962000
Days per year at Silacayoapam (Smn) with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 335 in 1979.
Days at or above 30 C (86 F) per year at Silacayoapam (Smn)
YearDaysDecade average
1958268216
1959164216
1960223226.2
1961228226.2
1962263226.2
1963211226.2
1964202226.2
1965253226.2
1966242226.2
1967206226.2
1968204226.2
1969230226.2
1970199188.5
1971177188.5
1972243188.5
1973168188.5
1974107188.5
1975101188.5
1976125188.5
1977116188.5
1978314188.5
1979335188.5
1980312208.9
1981272208.9
1982271208.9
1983217208.9
1984148208.9
1985163208.9
1986129208.9
1987150208.9
1988218208.9
19959667.6
19962967.6
19971567.6
199812667.6
19997267.6
20005050
First to last qualifying date each year at Silacayoapam (Smn) For each year, a bar from the first to the last day at Silacayoapam (Smn) meeting 30 C (86 F). 1958: 14 January 1958 to 23 November 19581959: 1 March 1959 to 31 December 19591960: 1 January 1960 to 31 December 19601961: 1 January 1961 to 31 December 19611962: 1 January 1962 to 31 December 19621963: 1 January 1963 to 30 November 19631964: 1 January 1964 to 31 December 19641965: 1 January 1965 to 31 December 19651966: 1 January 1966 to 31 December 19661967: 1 January 1967 to 14 December 19671968: 22 January 1968 to 18 December 19681969: 2 January 1969 to 14 December 19691970: 27 January 1970 to 30 December 19701971: 3 January 1971 to 30 December 19711972: 2 January 1972 to 11 December 19721973: 5 January 1973 to 22 September 19731974: 17 February 1974 to 6 November 19741975: 31 January 1975 to 19 June 19751976: 18 February 1976 to 18 September 19761977: 30 January 1977 to 25 August 19771978: 11 February 1978 to 31 December 19781979: 1 January 1979 to 31 December 19791980: 2 January 1980 to 29 December 19801981: 5 January 1981 to 29 December 19811982: 5 January 1982 to 8 December 19821983: 6 January 1983 to 10 December 19831984: 16 February 1984 to 20 October 19841985: 23 February 1985 to 12 October 19851986: 9 February 1986 to 22 November 19861987: 21 January 1987 to 22 December 19871988: 31 January 1988 to 22 December 19881995: 26 January 1995 to 9 June 19951996: 5 April 1996 to 2 June 19961997: 29 March 1997 to 17 June 19971998: 18 February 1998 to 14 August 19981999: 9 March 1999 to 21 June 19992000: 8 March 2000 to 6 June 200019581963196819731978198319881999JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Silacayoapam (Smn) meeting 30 C (86 F).
First to last qualifying date each year at Silacayoapam (Smn)
YearFirst dateLast date
19581958-01-141958-11-23
19591959-03-011959-12-31
19601960-01-011960-12-31
19611961-01-011961-12-31
19621962-01-011962-12-31
19631963-01-011963-11-30
19641964-01-011964-12-31
19651965-01-011965-12-31
19661966-01-011966-12-31
19671967-01-011967-12-14
19681968-01-221968-12-18
19691969-01-021969-12-14
19701970-01-271970-12-30
19711971-01-031971-12-30
19721972-01-021972-12-11
19731973-01-051973-09-22
19741974-02-171974-11-06
19751975-01-311975-06-19
19761976-02-181976-09-18
19771977-01-301977-08-25
19781978-02-111978-12-31
19791979-01-011979-12-31
19801980-01-021980-12-29
19811981-01-051981-12-29
19821982-01-051982-12-08
19831983-01-061983-12-10
19841984-02-161984-10-20
19851985-02-231985-10-12
19861986-02-091986-11-22
19871987-01-211987-12-22
19881988-01-311988-12-22
19951995-01-261995-06-09
19961996-04-051996-06-02
19971997-03-291997-06-17
19981998-02-181998-08-14
19991999-03-091999-06-21
20002000-03-082000-06-06

Every Fixed Threshold

Fixed thresholds at Silacayoapam (Smn)
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days37335197950
35 C (95 F): Days3420819781
40 C (104 F): Days78519784
45 C (113 F): Days2919785
90 F (32.2 C): Days35277197815
100 F (37.8 C): Days1412919781
110 F (43.3 C): Days222197817
0 C (32 F): Frost days (min2219872
20 C (68 F): Tropical nights (min41319956
10 mm (0.39 in): Days with 10 mm or more rain4549197730
25 mm (0.98 in): Days with 25 mm or more rain441819984
50 mm (1.97 in): Days with 50 mm or more rain16519872
100 mm (3.94 in): Days with 100 mm or more rain1119721

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1958.

Download the Data

  • Data for Silacayoapam (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).