Built 2026-10-19 (19 October 2026)

Atzalan Threshold Days by Year (MXN00030012)

11 fixed thresholds counted per year at Atzalan (MXN00030012): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Atzalan Thresholds

  • Atzalan: days with 10 mm (0.39 in) or more of precipitation in 76 years, most in 1931 with 88.
  • Atzalan: days with 25 mm (0.98 in) or more of precipitation in 76 years, most in 1941 with 41.
  • Atzalan: days with 50 mm (1.97 in) or more of precipitation in 75 years, most in 2006 with 14.
  • Atzalan: days with a maximum temperature at or above 30 C (86 F) in 68 years, most in 1998 with 50.
  • 11 fixed thresholds have at least one qualifying day at Atzalan.
68 years with a qualifying day
Days at or above 30 C (86 F) per year at Atzalan Days per year at Atzalan with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 50 in 1998. 02040601928: 131931: 51932: 61933: 171934: 41935: 61936: 51940: 141941: 31942: 151943: 221944: 141945: 131946: 41947: 81948: 71949: 71950: 31951: 11952: 61953: 171954: 11955: 101956: 11957: 41958: 21960: 101961: 101964: 111965: 71966: 11967: 131968: 31969: 91970: 161971: 91972: 51973: 241974: 151976: 171977: 281978: 281979: 311980: 311981: 151982: 241983: 361984: 231987: 141988: 271989: 321990: 141991: 471992: 61993: 301994: 331995: 401996: 361997: 161998: 501999: 272005: 32006: 22007: 42008: 72009: 132010: 92011: 81928194019471954196419711979198819952007
Days per year at Atzalan with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 50 in 1998.
Days at or above 30 C (86 F) per year at Atzalan
YearDaysDecade average
19281313
193157.2
193267.2
1933177.2
193447.2
193567.2
193657.2
19401410.7
1941310.7
19421510.7
19432210.7
19441410.7
19451310.7
1946410.7
1947810.7
1948710.7
1949710.7
195035
195115
195265
1953175
195415
1955105
195615
195745
195825
1960108
1961108
1964118
196578
196618
1967138
196838
196998
19701619.2
1971919.2
1972519.2
19732419.2
19741519.2
19761719.2
19772819.2
19782819.2
19793119.2
19803125.3
19811525.3
19822425.3
19833625.3
19842325.3
19871425.3
19882725.3
19893225.3
19901429.9
19914729.9
1992629.9
19933029.9
19943329.9
19954029.9
19963629.9
19971629.9
19985029.9
19992729.9
200535.8
200625.8
200745.8
200875.8
2009135.8
201098.5
201188.5
First to last qualifying date each year at Atzalan For each year, a bar from the first to the last day at Atzalan meeting 30 C (86 F). 1928: 17 February 1928 to 19 June 19281931: 28 March 1931 to 20 May 19311932: 22 March 1932 to 30 April 19321933: 10 April 1933 to 13 May 19331934: 14 April 1934 to 17 April 19341935: 27 March 1935 to 19 May 19351936: 21 March 1936 to 5 April 19361940: 1 April 1940 to 5 August 19401941: 16 April 1941 to 10 June 19411942: 14 March 1942 to 29 October 19421943: 12 March 1943 to 29 June 19431944: 18 March 1944 to 23 May 19441945: 3 March 1945 to 12 June 19451946: 15 May 1946 to 20 May 19461947: 18 March 1947 to 29 May 19471948: 26 March 1948 to 11 May 19481949: 25 March 1949 to 24 June 19491950: 30 April 1950 to 2 May 19501951: 10 June 1951 to 10 June 19511952: 2 March 1952 to 10 May 19521953: 3 March 1953 to 18 May 19531954: 23 March 1954 to 23 March 19541955: 6 April 1955 to 28 May 19551956: 15 April 1956 to 15 April 19561957: 23 March 1957 to 23 May 19571958: 8 April 1958 to 9 April 19581960: 11 February 1960 to 19 May 19601961: 30 March 1961 to 11 September 19611964: 7 April 1964 to 6 May 19641965: 11 March 1965 to 15 April 19651966: 12 April 1966 to 12 April 19661967: 13 April 1967 to 1 June 19671968: 3 April 1968 to 23 April 19681969: 15 March 1969 to 24 June 19691970: 29 March 1970 to 12 June 19701971: 22 April 1971 to 24 May 19711972: 7 April 1972 to 25 May 19721973: 10 March 1973 to 28 May 19731974: 23 March 1974 to 9 June 19741976: 12 March 1976 to 26 September 19761977: 23 February 1977 to 7 November 19771978: 27 February 1978 to 28 August 19781979: 2 March 1979 to 20 October 19791980: 21 February 1980 to 9 August 19801981: 22 March 1981 to 30 August 19811982: 13 March 1982 to 4 June 19821983: 3 March 1983 to 31 May 19831984: 18 March 1984 to 7 May 19841987: 14 February 1987 to 17 September 19871988: 18 February 1988 to 26 November 19881989: 27 February 1989 to 8 November 19891990: 2 February 1990 to 31 May 19901991: 18 February 1991 to 31 July 19911992: 9 March 1992 to 30 October 19921993: 15 February 1993 to 10 December 19931994: 27 January 1994 to 27 November 19941995: 10 February 1995 to 5 October 19951996: 18 January 1996 to 22 October 19961997: 1 March 1997 to 9 December 19971998: 16 February 1998 to 17 June 19981999: 5 March 1999 to 29 May 19992005: 26 March 2005 to 30 April 20052006: 10 May 2006 to 17 October 20062007: 1 March 2007 to 20 December 20072008: 3 May 2008 to 13 September 20082009: 27 February 2009 to 3 May 20092010: 10 March 2010 to 1 July 20102011: 26 March 2011 to 21 May 201119281942195119611972198219932007JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Atzalan meeting 30 C (86 F).
First to last qualifying date each year at Atzalan
YearFirst dateLast date
19281928-02-171928-06-19
19311931-03-281931-05-20
19321932-03-221932-04-30
19331933-04-101933-05-13
19341934-04-141934-04-17
19351935-03-271935-05-19
19361936-03-211936-04-05
19401940-04-011940-08-05
19411941-04-161941-06-10
19421942-03-141942-10-29
19431943-03-121943-06-29
19441944-03-181944-05-23
19451945-03-031945-06-12
19461946-05-151946-05-20
19471947-03-181947-05-29
19481948-03-261948-05-11
19491949-03-251949-06-24
19501950-04-301950-05-02
19511951-06-101951-06-10
19521952-03-021952-05-10
19531953-03-031953-05-18
19541954-03-231954-03-23
19551955-04-061955-05-28
19561956-04-151956-04-15
19571957-03-231957-05-23
19581958-04-081958-04-09
19601960-02-111960-05-19
19611961-03-301961-09-11
19641964-04-071964-05-06
19651965-03-111965-04-15
19661966-04-121966-04-12
19671967-04-131967-06-01
19681968-04-031968-04-23
19691969-03-151969-06-24
19701970-03-291970-06-12
19711971-04-221971-05-24
19721972-04-071972-05-25
19731973-03-101973-05-28
19741974-03-231974-06-09
19761976-03-121976-09-26
19771977-02-231977-11-07
19781978-02-271978-08-28
19791979-03-021979-10-20
19801980-02-211980-08-09
19811981-03-221981-08-30
19821982-03-131982-06-04
19831983-03-031983-05-31
19841984-03-181984-05-07
19871987-02-141987-09-17
19881988-02-181988-11-26
19891989-02-271989-11-08
19901990-02-021990-05-31
19911991-02-181991-07-31
19921992-03-091992-10-30
19931993-02-151993-12-10
19941994-01-271994-11-27
19951995-02-101995-10-05
19961996-01-181996-10-22
19971997-03-011997-12-09
19981998-02-161998-06-17
19991999-03-051999-05-29
20052005-03-262005-04-30
20062006-05-102006-10-17
20072007-03-012007-12-20
20082008-05-032008-09-13
20092009-02-272009-05-03
20102010-03-102010-07-01
20112011-03-262011-05-21

Every Fixed Threshold

Fixed thresholds at Atzalan
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days685019988
35 C (95 F): Days131019981
90 F (32.2 C): Days412119981
100 F (37.8 C): Days1319983
0 C (32 F): Frost days (min4922201014
20 C (68 F): Tropical nights (min6319911
10 mm (0.39 in): Days with 10 mm or more rain7688193162
25 mm (0.98 in): Days with 25 mm or more rain7641194124
50 mm (1.97 in): Days with 50 mm or more rain751420068
100 mm (3.94 in): Days with 100 mm or more rain59719442
200 mm (7.87 in): Days with 200 mm or more rain12319441

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1928.

Download the Data

  • Data for Atzalan 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).