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Built 2026-10-19 (19 October 2026)

San Francisco de Los Romo (Sm Threshold Days by Year (MXN00001025)

11 fixed thresholds counted per year at San Francisco de Los Romo (Sm (MXN00001025): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for San Francisco de Los Romo (Sm Thresholds

  • San Francisco de Los Romo (Sm: days with 10 mm (0.39 in) or more of precipitation in 45 years, most in 1965 with 25.
  • San Francisco de Los Romo (Sm: days with a maximum temperature at or above 30 C (86 F) in 41 years, most in 1977 with 288.
  • San Francisco de Los Romo (Sm: days with a maximum temperature at or above 90 F (32.2 C) in 41 years, most in 1979 with 194.
  • San Francisco de Los Romo (Sm: nights with a minimum temperature at or below 0 C (32 F) in 41 years, most in 1929 with 78.
  • 11 fixed thresholds have at least one qualifying day at San Francisco de Los Romo (Sm.
41 years with a qualifying day
Days at or above 30 C (86 F) per year at San Francisco de Los Romo (Sm Days per year at San Francisco de Los Romo (Sm with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 288 in 1977. 01002003001927: 1231928: 1361929: 1591930: 1291931: 1751945: 1391946: 1291947: 1061948: 1131949: 1141950: 1201951: 1431952: 1281953: 1431954: 1391955: 1451956: 1501957: 1671959: 751960: 1251961: 911962: 961963: 1021964: 1041965: 761966: 581967: 751968: 691969: 1151970: 981971: 731972: 1011973: 631974: 791975: 831976: 2531977: 2881978: 2871979: 2691980: 1431981: 61192719451950195519611966197119761981
Days per year at San Francisco de Los Romo (Sm with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 288 in 1977.
Days at or above 30 C (86 F) per year at San Francisco de Los Romo (Sm
YearDaysDecade average
1927123139.3
1928136139.3
1929159139.3
1930129152
1931175152
1945139120.2
1946129120.2
1947106120.2
1948113120.2
1949114120.2
1950120134.4
1951143134.4
1952128134.4
1953143134.4
1954139134.4
1955145134.4
1956150134.4
1957167134.4
195975134.4
196012591.1
19619191.1
19629691.1
196310291.1
196410491.1
19657691.1
19665891.1
19677591.1
19686991.1
196911591.1
197098159.4
197173159.4
1972101159.4
197363159.4
197479159.4
197583159.4
1976253159.4
1977288159.4
1978287159.4
1979269159.4
1980143102
198161102
First to last qualifying date each year at San Francisco de Los Romo (Sm For each year, a bar from the first to the last day at San Francisco de Los Romo (Sm meeting 30 C (86 F). 1927: 2 March 1927 to 16 November 19271928: 28 February 1928 to 23 October 19281929: 14 February 1929 to 11 November 19291930: 21 February 1930 to 17 October 19301931: 2 April 1931 to 16 November 19311945: 25 February 1945 to 3 November 19451946: 16 March 1946 to 22 October 19461947: 21 March 1947 to 18 October 19471948: 18 February 1948 to 31 December 19481949: 21 February 1949 to 21 October 19491950: 10 February 1950 to 21 September 19501951: 20 February 1951 to 25 December 19511952: 28 February 1952 to 15 October 19521953: 27 February 1953 to 30 September 19531954: 10 March 1954 to 29 September 19541955: 20 February 1955 to 18 September 19551956: 20 February 1956 to 25 October 19561957: 2 February 1957 to 6 November 19571959: 14 January 1959 to 13 October 19591960: 3 March 1960 to 15 October 19601961: 9 April 1961 to 1 October 19611962: 29 March 1962 to 1 October 19621963: 14 March 1963 to 18 September 19631964: 12 March 1964 to 4 September 19641965: 9 March 1965 to 15 September 19651966: 23 March 1966 to 3 October 19661967: 10 March 1967 to 14 August 19671968: 28 March 1968 to 13 August 19681969: 2 April 1969 to 18 November 19691970: 23 March 1970 to 24 October 19701971: 6 March 1971 to 29 October 19711972: 22 February 1972 to 10 December 19721973: 5 January 1973 to 5 November 19731974: 8 March 1974 to 7 September 19741975: 7 March 1975 to 23 December 19751976: 3 January 1976 to 29 December 19761977: 5 January 1977 to 31 December 19771978: 1 January 1978 to 31 December 19781979: 1 January 1979 to 31 October 19791980: 9 March 1980 to 28 October 19801981: 31 March 1981 to 24 September 19811927194619521959196519711977JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at San Francisco de Los Romo (Sm meeting 30 C (86 F).
First to last qualifying date each year at San Francisco de Los Romo (Sm
YearFirst dateLast date
19271927-03-021927-11-16
19281928-02-281928-10-23
19291929-02-141929-11-11
19301930-02-211930-10-17
19311931-04-021931-11-16
19451945-02-251945-11-03
19461946-03-161946-10-22
19471947-03-211947-10-18
19481948-02-181948-12-31
19491949-02-211949-10-21
19501950-02-101950-09-21
19511951-02-201951-12-25
19521952-02-281952-10-15
19531953-02-271953-09-30
19541954-03-101954-09-29
19551955-02-201955-09-18
19561956-02-201956-10-25
19571957-02-021957-11-06
19591959-01-141959-10-13
19601960-03-031960-10-15
19611961-04-091961-10-01
19621962-03-291962-10-01
19631963-03-141963-09-18
19641964-03-121964-09-04
19651965-03-091965-09-15
19661966-03-231966-10-03
19671967-03-101967-08-14
19681968-03-281968-08-13
19691969-04-021969-11-18
19701970-03-231970-10-24
19711971-03-061971-10-29
19721972-02-221972-12-10
19731973-01-051973-11-05
19741974-03-081974-09-07
19751975-03-071975-12-23
19761976-01-031976-12-29
19771977-01-051977-12-31
19781978-01-011978-12-31
19791979-01-011979-10-31
19801980-03-091980-10-28
19811981-03-311981-09-24

Every Fixed Threshold

Fixed thresholds at San Francisco de Los Romo (Sm
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days41288197761
35 C (95 F): Days3914619792
40 C (104 F): Days516197916
90 F (32.2 C): Days41194197920
100 F (37.8 C): Days176719793
110 F (43.3 C): Days1119791
0 C (32 F): Frost days (min4178192916
20 C (68 F): Tropical nights (min2219531
10 mm (0.39 in): Days with 10 mm or more rain4525196510
25 mm (0.98 in): Days with 25 mm or more rain401119673
50 mm (1.97 in): Days with 50 mm or more rain11219731

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1927.

Download the Data

  • Data for San Francisco de Los Romo (Sm 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).