Ixmiquilpan (Smn) Weather Records (MXN00013013)
Record envelope, standing records and threshold days for Ixmiquilpan (Smn) (MXN00013013), Mexico, with 91 years of record.
Key Facts for Ixmiquilpan (Smn)
- Ixmiquilpan (Smn) (MXN00013013) is a weather station in Mexico at 20.47 latitude and -99.22 longitude, 1,700 m (5,577 ft) above sea level.
- The station reports from 1922 to 2012, 91 years of record.
- 1,464 records set at Ixmiquilpan (Smn) still stand.
- Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
- Ixmiquilpan (Smn) set a daily record high maximum temperature of 38.9 C (102.0 F) on 29 April 2012.
About the Station
- Location: Mexico, 20.47 latitude, -99.22 longitude.
- Elevation: 1,700 m (5,577 ft).
- Period of record: 1922 to 2012, 91 years.
- Eligible elements: tmax, tmin, prcp.
Daily Record Envelope and 2026
0 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 35.0 C (95.0 F) | -9.4 C (15.1 F) | n/a | n/a |
| Feb | 35.6 C (96.1 F) | -7.2 C (19.0 F) | n/a | n/a |
| Mar | 37.8 C (100.0 F) | -4.4 C (24.1 F) | n/a | n/a |
| Apr | 39.4 C (102.9 F) | -2.8 C (27.0 F) | n/a | n/a |
| May | 43.9 C (111.0 F) | 1.7 C (35.1 F) | n/a | n/a |
| Jun | 40.6 C (105.1 F) | 0.6 C (33.1 F) | n/a | n/a |
| Jul | 36.7 C (98.1 F) | 1.1 C (34.0 F) | n/a | n/a |
| Aug | 37.8 C (100.0 F) | 2.8 C (37.0 F) | n/a | n/a |
| Sep | 36.7 C (98.1 F) | 0.6 C (33.1 F) | n/a | n/a |
| Oct | 35.0 C (95.0 F) | -3.3 C (26.1 F) | n/a | n/a |
| Nov | 36.1 C (97.0 F) | -6.1 C (21.0 F) | n/a | n/a |
| Dec | 35.6 C (96.1 F) | -6.7 C (19.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1922 | 54 |
| 1923 | 48 |
| 1924 | 37 |
| 1925 | 25 |
| 1926 | 69 |
| 1927 | 61 |
| 1928 | 91 |
| 1929 | 11 |
| 1930 | 17 |
| 1931 | 14 |
| 1932 | 20 |
| 1933 | 23 |
| 1934 | 17 |
| 1935 | 107 |
| 1936 | 6 |
| 1938 | 34 |
| 1939 | 49 |
| 1940 | 7 |
| 1941 | 13 |
| 1942 | 16 |
| 1943 | 10 |
| 1944 | 13 |
| 1945 | 9 |
| 1946 | 80 |
| 1947 | 7 |
| 1948 | 6 |
| 1949 | 10 |
| 1950 | 10 |
| 1951 | 37 |
| 1952 | 39 |
| 1953 | 18 |
| 1954 | 14 |
| 1955 | 14 |
| 1956 | 12 |
| 1957 | 9 |
| 1958 | 10 |
| 1959 | 13 |
| 1960 | 17 |
| 1961 | 8 |
| 1962 | 5 |
| 1963 | 4 |
| 1964 | 8 |
| 1965 | 13 |
| 1966 | 12 |
| 1967 | 4 |
| 1968 | 7 |
| 1969 | 6 |
| 1970 | 13 |
| 1971 | 3 |
| 1972 | 5 |
| 1973 | 4 |
| 1974 | 8 |
| 1975 | 9 |
| 1976 | 12 |
| 1977 | 6 |
| 1978 | 9 |
| 1979 | 15 |
| 1980 | 4 |
| 1981 | 11 |
| 1982 | 2 |
| 1983 | 11 |
| 1984 | 8 |
| 1985 | 5 |
| 1986 | 3 |
| 1987 | 9 |
| 1988 | 17 |
| 1989 | 15 |
| 1990 | 6 |
| 1991 | 4 |
| 1992 | 8 |
| 1993 | 21 |
| 1994 | 18 |
| 1995 | 2 |
| 1996 | 4 |
| 1997 | 8 |
| 1998 | 8 |
| 1999 | 13 |
| 2000 | 12 |
| 2001 | 4 |
| 2002 | 7 |
| 2003 | 8 |
| 2004 | 6 |
| 2005 | 5 |
| 2006 | 5 |
| 2007 | 1 |
| 2008 | 21 |
| 2009 | 4 |
| 2010 | 10 |
| 2011 | 3 |
| 2012 | 3 |
All-Time Record Progression
6 new records| Date | Kind | Detail |
|---|---|---|
| 1956-01-12 | Record low minimum temperature | Record low minimum temperature -8.9 C (16.0 F) |
| 1956-01-13 | Record low minimum temperature | Record low minimum temperature -9.4 C (15.1 F) |
| 1958-01-07 | Record low maximum temperature | Record low maximum temperature 8.3 C (46.9 F) |
| 1964-05-23 | Record daily precipitation | Record daily precipitation 86.4 mm (3.4 in) |
| 1967-01-11 | Record low maximum temperature | Record low maximum temperature 6.1 C (43.0 F) |
| 2003-09-21 | Record daily precipitation | Record daily precipitation 92.5 mm (3.6 in) |
Wettest Day of Each Month
Sep: 92.5 mm (3.6 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 32.8 mm (1.3 in) | 28 January 1992 |
| Feb | 30.0 mm (1.2 in) | 3 February 2010 |
| Mar | 25.4 mm (1.0 in) | 24 March 1972 |
| Apr | 44.5 mm (1.8 in) | 7 April 1985 |
| May | 86.4 mm (3.4 in) | 23 May 1964 |
| Jun | 58.9 mm (2.3 in) | 28 June 1932 |
| Jul | 61.0 mm (2.4 in) | 20 July 1980 |
| Aug | 69.3 mm (2.7 in) | 17 August 1949 |
| Sep | 92.5 mm (3.6 in) | 21 September 2003 |
| Oct | 59.9 mm (2.4 in) | 20 October 1930 |
| Nov | 29.0 mm (1.1 in) | 10 November 2006 |
| Dec | 42.4 mm (1.7 in) | 15 December 1941 |
Period of Record Coverage
1922 to 2012| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1922 | 306 | 84% | No |
| 1923 | 365 | 100% | Yes |
| 1924 | 305 | 83% | No |
| 1925 | 304 | 83% | No |
| 1926 | 365 | 100% | Yes |
| 1927 | 365 | 100% | Yes |
| 1928 | 366 | 100% | Yes |
| 1929 | 365 | 100% | Yes |
| 1930 | 364 | 100% | Yes |
| 1931 | 365 | 100% | Yes |
| 1932 | 366 | 100% | Yes |
| 1933 | 365 | 100% | Yes |
| 1934 | 364 | 100% | Yes |
| 1935 | 360 | 99% | Yes |
| 1936 | 362 | 99% | Yes |
| 1938 | 364 | 100% | Yes |
| 1939 | 365 | 100% | Yes |
| 1940 | 366 | 100% | Yes |
| 1941 | 334 | 92% | Yes |
| 1942 | 365 | 100% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 366 | 100% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 363 | 99% | Yes |
| 1948 | 366 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 362 | 99% | Yes |
| 1962 | 364 | 100% | Yes |
| 1963 | 364 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 364 | 100% | Yes |
| 1971 | 364 | 100% | Yes |
| 1972 | 365 | 100% | Yes |
| 1973 | 361 | 99% | Yes |
| 1974 | 362 | 99% | Yes |
| 1975 | 363 | 99% | Yes |
| 1976 | 365 | 100% | Yes |
| 1977 | 364 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 363 | 99% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 365 | 100% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 360 | 98% | Yes |
| 1985 | 346 | 95% | Yes |
| 1986 | 361 | 99% | Yes |
| 1987 | 348 | 95% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 334 | 92% | Yes |
| 1991 | 346 | 95% | Yes |
| 1992 | 335 | 92% | Yes |
| 1993 | 348 | 95% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 357 | 98% | Yes |
| 1996 | 364 | 99% | Yes |
| 1997 | 334 | 92% | Yes |
| 1998 | 364 | 100% | Yes |
| 1999 | 364 | 100% | Yes |
| 2000 | 365 | 100% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 365 | 100% | Yes |
| 2003 | 364 | 100% | Yes |
| 2004 | 364 | 99% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 365 | 100% | Yes |
| 2009 | 364 | 100% | Yes |
| 2010 | 364 | 100% | Yes |
| 2011 | 364 | 100% | Yes |
| 2012 | 211 | 58% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 29 April 2012 | Ixmiquilpan (Smn), MX | daily high max | 38.9 C (102.0 F) | 2.2 C (4.0 F) | 62 years | 33 of 100 (Routine) |
| 25 April 2012 | Ixmiquilpan (Smn), MX | daily low min | 5.0 C (41.0 F) | 0.6 C (1.1 F) | 18 years | 16 of 100 (Routine) |
| 28 March 2012 | Ixmiquilpan (Smn), MX | daily rain | 15.0 mm (0.6 in) | 6.4 mm (0.25 in) | 8 years | 20 of 100 (Routine) |
| 11 March 2012 | Ixmiquilpan (Smn), MX | daily rain | 24.9 mm (1.0 in) | 19.1 mm (0.8 in) | 36 years | 20 of 100 (Routine) |
| 16 February 2012 | Ixmiquilpan (Smn), MX | daily rain | 3.6 mm (0.14 in) | 2.8 mm (0.11 in) | 54 years | 20 of 100 (Routine) |
| 14 February 2012 | Ixmiquilpan (Smn), MX | daily rain | 5.6 mm (0.22 in) | 4.1 mm (0.16 in) | 84 years | 20 of 100 (Routine) |
| 12 February 2012 | Ixmiquilpan (Smn), MX | daily low max | 13.9 C (57.0 F) | 1.1 C (2.0 F) | 9 years | 13 of 100 (Routine) |
| 12 February 2012 | Ixmiquilpan (Smn), MX | daily rain (Tie) | 0.8 mm (0.03 in) | tie | 9 years | 2 of 100 (Routine) |
| 11 February 2012 | Ixmiquilpan (Smn), MX | daily rain | 7.4 mm (0.29 in) | 2.1 mm (0.08 in) | 12 years | 16 of 100 (Routine) |
| 10 February 2012 | Ixmiquilpan (Smn), MX | daily rain | 5.3 mm (0.21 in) | 1.7 mm (0.07 in) | 4 years | 13 of 100 (Routine) |
| 27 November 2011 | Ixmiquilpan (Smn), MX | daily rain | 2.0 mm (0.08 in) | 0.5 mm (0.02 in) | 41 years | 20 of 100 (Routine) |
| 24 November 2011 | Ixmiquilpan (Smn), MX | daily high min (Tie) | 11.7 C (53.1 F) | tie | 50 years | 6 of 100 (Routine) |
| 10 September 2011 | Ixmiquilpan (Smn), MX | daily low min | 5.0 C (41.0 F) | 0.6 C (1.1 F) | 22 years | 17 of 100 (Routine) |
| 6 September 2011 | Ixmiquilpan (Smn), MX | daily low max | 17.8 C (64.0 F) | 1.1 C (2.0 F) | 26 years | 20 of 100 (Routine) |
| 17 July 2011 | Ixmiquilpan (Smn), MX | daily low max (Tie) | 21.1 C (70.0 F) | tie | 62 years | 6 of 100 (Routine) |
| 3 May 2011 | Ixmiquilpan (Smn), MX | daily low max | 18.9 C (66.0 F) | 1.1 C (2.0 F) | 81 years | 36 of 100 (Notable) |
| 4 December 2010 | Ixmiquilpan (Smn), MX | daily low min | -2.2 C (28.0 F) | 0.5 C (0.9 F) | 17 years | 14 of 100 (Routine) |
| 9 November 2010 | Ixmiquilpan (Smn), MX | daily low min | -5.0 C (23.0 F) | 2.8 C (5.0 F) | 64 years | 34 of 100 (Routine) |
| 29 October 2010 | Ixmiquilpan (Smn), MX | daily low max | 14.4 C (57.9 F) | 2.3 C (4.1 F) | 3 years | 14 of 100 (Routine) |
| 26 October 2010 | Ixmiquilpan (Smn), MX | daily high max | 34.4 C (93.9 F) | 2.7 C (4.9 F) | 71 years | 36 of 100 (Notable) |
Climate Trend
78 complete years, 1923 to 2011| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1923 | 20.4 C | +2.31 C |
| 1926 | 19.8 C | +1.72 C |
| 1927 | 19.3 C | +1.24 C |
| 1928 | 20.5 C | +2.41 C |
| 1929 | 17.9 C | -0.18 C |
| 1930 | 17.8 C | -0.29 C |
| 1931 | 17.6 C | -0.45 C |
| 1932 | 17.7 C | -0.40 C |
| 1933 | 17.2 C | -0.88 C |
| 1934 | 16.5 C | -1.52 C |
| 1935 | 14.5 C | -3.56 C |
| 1936 | 18.0 C | -0.09 C |
| 1938 | 18.6 C | +0.54 C |
| 1939 | 19.1 C | +1.03 C |
| 1940 | 18.4 C | +0.32 C |
| 1942 | 17.8 C | -0.30 C |
| 1943 | 16.6 C | -1.49 C |
| 1944 | 16.9 C | -1.14 C |
| 1945 | 17.1 C | -0.98 C |
| 1946 | 16.0 C | -2.09 C |
| 1947 | 17.9 C | -0.15 C |
| 1948 | 18.0 C | -0.08 C |
| 1949 | 18.5 C | +0.44 C |
| 1950 | 18.4 C | +0.33 C |
| 1951 | 18.9 C | +0.83 C |
| 1952 | 18.3 C | +0.22 C |
| 1953 | 18.5 C | +0.45 C |
| 1954 | 18.2 C | +0.13 C |
| 1955 | 18.1 C | -0.01 C |
| 1956 | 18.0 C | -0.10 C |
| 1957 | 18.9 C | +0.82 C |
| 1958 | 18.9 C | +0.80 C |
| 1959 | 18.6 C | +0.57 C |
| 1960 | 18.7 C | +0.68 C |
| 1961 | 18.4 C | +0.31 C |
| 1962 | 18.8 C | +0.77 C |
| 1963 | 18.6 C | +0.53 C |
| 1964 | 19.1 C | +1.04 C |
| 1965 | 18.9 C | +0.79 C |
| 1966 | 18.1 C | -0.01 C |
| 1967 | 17.8 C | -0.29 C |
| 1968 | 18.4 C | +0.31 C |
| 1969 | 19.1 C | +1.04 C |
| 1970 | 18.3 C | +0.20 C |
| 1971 | 18.3 C | +0.25 C |
| 1972 | 18.8 C | +0.72 C |
| 1973 | 18.7 C | +0.62 C |
| 1974 | 18.0 C | -0.02 C |
| 1975 | 18.1 C | +0.04 C |
| 1976 | 17.8 C | -0.29 C |
| 1977 | 18.6 C | +0.51 C |
| 1978 | 17.5 C | -0.52 C |
| 1979 | 16.7 C | -1.33 C |
| 1980 | 17.2 C | -0.84 C |
| 1981 | 17.1 C | -0.92 C |
| 1982 | 17.8 C | -0.24 C |
| 1983 | 17.6 C | -0.48 C |
| 1984 | 16.9 C | -1.20 C |
| 1986 | 16.8 C | -1.22 C |
| 1988 | 16.0 C | -2.09 C |
| 1989 | 17.5 C | -0.55 C |
| 1994 | 16.4 C | -1.69 C |
| 1995 | 17.3 C | -0.72 C |
| 1996 | 18.2 C | +0.17 C |
| 1998 | 18.8 C | +0.77 C |
| 1999 | 17.7 C | -0.33 C |
| 2000 | 18.5 C | +0.41 C |
| 2001 | 18.1 C | +0.05 C |
| 2002 | 18.4 C | +0.29 C |
| 2003 | 18.8 C | +0.74 C |
| 2004 | 18.2 C | +0.12 C |
| 2005 | 18.4 C | +0.38 C |
| 2006 | 18.3 C | +0.26 C |
| 2007 | 18.3 C | +0.23 C |
| 2008 | 17.6 C | -0.48 C |
| 2009 | 18.8 C | +0.70 C |
| 2010 | 17.9 C | -0.13 C |
| 2011 | 18.7 C | +0.62 C |
The fitted trend in annual mean temperature here over 1923 to 2011 is -0.03 C (-0.11 to 0.06) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.05 F (-0.20 to 0.11) per decade. The slope is a straight line fitted to 78 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.03 C (-0.11 to 0.06) per decade | -0.05 F (-0.20 to 0.11) per decade | 1923 to 2011 | 78 | Not clearly different from zero |
| Mean daily maximum | -0.1 C (-0.2 to 0.1) per decade | -0.1 F (-0.4 to 0.1) per decade | 1923 to 2011 | 78 | Not clearly different from zero |
| Mean daily minimum | 0.02 C (-0.08 to 0.12) per decade | 0.03 F (-0.14 to 0.21) per decade | 1923 to 2011 | 78 | Not clearly different from zero |
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1922 to 2012| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 43.9 C (111.0 F) | 1927 | 35.6 C (96.1 F) | 90 |
| Coldest night (TNn) | -9.4 C (15.1 F) | 1956 | -3.9 C (25.0 F) | 90 |
| Wettest day (Rx1day) | 92.5 mm (3.6 in) | 2003 | 41.4 mm (1.6 in) | 90 |
| Wettest five days (Rx5day) | 204.6 mm (8.1 in) | 1935 | 67.2 mm (2.6 in) | 90 |
| Longest dry spell (CDD) | 169 days | 1926 | 68 days | 90 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1922 | 37.8 C (100.0 F) |
| 1923 | 37.8 C (100.0 F) |
| 1924 | 38.9 C (102.0 F) |
| 1925 | 38.9 C (102.0 F) |
| 1926 | 36.7 C (98.1 F) |
| 1927 | 43.9 C (111.0 F) |
| 1928 | 40.0 C (104.0 F) |
| 1929 | 35.6 C (96.1 F) |
| 1930 | 35.0 C (95.0 F) |
| 1931 | 35.6 C (96.1 F) |
| 1932 | 35.0 C (95.0 F) |
| 1933 | 37.8 C (100.0 F) |
| 1934 | 31.7 C (89.1 F) |
| 1935 | 31.7 C (89.1 F) |
| 1936 | 32.8 C (91.0 F) |
| 1938 | 35.0 C (95.0 F) |
| 1939 | 35.6 C (96.1 F) |
| 1940 | 36.7 C (98.1 F) |
| 1941 | 33.9 C (93.0 F) |
| 1942 | 36.7 C (98.1 F) |
| 1943 | 35.0 C (95.0 F) |
| 1944 | 33.9 C (93.0 F) |
| 1945 | 32.8 C (91.0 F) |
| 1946 | 34.4 C (93.9 F) |
| 1947 | 36.7 C (98.1 F) |
| 1948 | 37.8 C (100.0 F) |
| 1949 | 35.6 C (96.1 F) |
| 1950 | 36.7 C (98.1 F) |
| 1951 | 36.1 C (97.0 F) |
| 1952 | 35.6 C (96.1 F) |
| 1953 | 37.8 C (100.0 F) |
| 1954 | 37.8 C (100.0 F) |
| 1955 | 36.7 C (98.1 F) |
| 1956 | 38.9 C (102.0 F) |
| 1957 | 37.2 C (99.0 F) |
| 1958 | 36.1 C (97.0 F) |
| 1959 | 35.0 C (95.0 F) |
| 1960 | 37.2 C (99.0 F) |
| 1961 | 36.7 C (98.1 F) |
| 1962 | 37.2 C (99.0 F) |
| 1963 | 38.3 C (100.9 F) |
| 1964 | 36.1 C (97.0 F) |
| 1965 | 35.0 C (95.0 F) |
| 1966 | 33.9 C (93.0 F) |
| 1967 | 35.0 C (95.0 F) |
| 1968 | 34.4 C (93.9 F) |
| 1969 | 37.2 C (99.0 F) |
| 1970 | 37.2 C (99.0 F) |
| 1971 | 36.7 C (98.1 F) |
| 1972 | 35.0 C (95.0 F) |
| 1973 | 36.7 C (98.1 F) |
| 1974 | 35.0 C (95.0 F) |
| 1975 | 35.6 C (96.1 F) |
| 1976 | 33.9 C (93.0 F) |
| 1977 | 35.6 C (96.1 F) |
| 1978 | 33.9 C (93.0 F) |
| 1979 | 32.8 C (91.0 F) |
| 1980 | 32.8 C (91.0 F) |
| 1981 | 32.8 C (91.0 F) |
| 1982 | 35.0 C (95.0 F) |
| 1983 | 38.3 C (100.9 F) |
| 1984 | 35.0 C (95.0 F) |
| 1985 | 35.0 C (95.0 F) |
| 1986 | 33.9 C (93.0 F) |
| 1987 | 32.8 C (91.0 F) |
| 1988 | 33.9 C (93.0 F) |
| 1989 | 34.4 C (93.9 F) |
| 1990 | 35.6 C (96.1 F) |
| 1991 | 36.1 C (97.0 F) |
| 1992 | 32.8 C (91.0 F) |
| 1993 | 36.1 C (97.0 F) |
| 1994 | 35.0 C (95.0 F) |
| 1995 | 35.0 C (95.0 F) |
| 1996 | 35.6 C (96.1 F) |
| 1997 | 35.0 C (95.0 F) |
| 1998 | 37.8 C (100.0 F) |
| 1999 | 39.4 C (102.9 F) |
| 2000 | 34.4 C (93.9 F) |
| 2001 | 35.0 C (95.0 F) |
| 2002 | 36.7 C (98.1 F) |
| 2003 | 37.2 C (99.0 F) |
| 2004 | 35.0 C (95.0 F) |
| 2005 | 37.8 C (100.0 F) |
| 2006 | 35.0 C (95.0 F) |
| 2007 | 35.0 C (95.0 F) |
| 2008 | 36.7 C (98.1 F) |
| 2009 | 35.6 C (96.1 F) |
| 2010 | 35.6 C (96.1 F) |
| 2011 | 36.1 C (97.0 F) |
| 2012 | 38.9 C (102.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1922 | 0.0 C (32.0 F) |
| 1923 | 0.6 C (33.1 F) |
| 1924 | 0.0 C (32.0 F) |
| 1925 | 0.0 C (32.0 F) |
| 1926 | -5.0 C (23.0 F) |
| 1927 | -4.4 C (24.1 F) |
| 1928 | -5.0 C (23.0 F) |
| 1929 | -3.3 C (26.1 F) |
| 1930 | -5.0 C (23.0 F) |
| 1931 | 0.0 C (32.0 F) |
| 1932 | -4.4 C (24.1 F) |
| 1933 | -4.4 C (24.1 F) |
| 1934 | -2.2 C (28.0 F) |
| 1935 | -4.4 C (24.1 F) |
| 1936 | 1.7 C (35.1 F) |
| 1938 | 0.6 C (33.1 F) |
| 1939 | -2.2 C (28.0 F) |
| 1940 | -5.6 C (21.9 F) |
| 1941 | -6.1 C (21.0 F) |
| 1942 | -6.1 C (21.0 F) |
| 1943 | -6.7 C (19.9 F) |
| 1944 | -6.7 C (19.9 F) |
| 1945 | -5.0 C (23.0 F) |
| 1946 | -2.2 C (28.0 F) |
| 1947 | -1.1 C (30.0 F) |
| 1948 | -3.9 C (25.0 F) |
| 1949 | -3.9 C (25.0 F) |
| 1950 | -5.0 C (23.0 F) |
| 1951 | -7.2 C (19.0 F) |
| 1952 | -4.4 C (24.1 F) |
| 1953 | -6.1 C (21.0 F) |
| 1954 | -5.6 C (21.9 F) |
| 1955 | -6.1 C (21.0 F) |
| 1956 | -9.4 C (15.1 F) |
| 1957 | -5.0 C (23.0 F) |
| 1958 | -4.4 C (24.1 F) |
| 1959 | -3.3 C (26.1 F) |
| 1960 | -5.6 C (21.9 F) |
| 1961 | -4.4 C (24.1 F) |
| 1962 | -3.3 C (26.1 F) |
| 1963 | -5.0 C (23.0 F) |
| 1964 | 0.0 C (32.0 F) |
| 1965 | 0.0 C (32.0 F) |
| 1966 | -5.0 C (23.0 F) |
| 1967 | -2.8 C (27.0 F) |
| 1968 | -2.8 C (27.0 F) |
| 1969 | -1.1 C (30.0 F) |
| 1970 | -5.0 C (23.0 F) |
| 1971 | -2.2 C (28.0 F) |
| 1972 | -3.3 C (26.1 F) |
| 1973 | -5.0 C (23.0 F) |
| 1974 | -4.4 C (24.1 F) |
| 1975 | -5.0 C (23.0 F) |
| 1976 | -6.1 C (21.0 F) |
| 1977 | -3.3 C (26.1 F) |
| 1978 | -2.2 C (28.0 F) |
| 1979 | -3.9 C (25.0 F) |
| 1980 | -3.3 C (26.1 F) |
| 1981 | -5.0 C (23.0 F) |
| 1982 | -2.8 C (27.0 F) |
| 1983 | -2.8 C (27.0 F) |
| 1984 | -3.3 C (26.1 F) |
| 1985 | -5.0 C (23.0 F) |
| 1986 | -4.4 C (24.1 F) |
| 1987 | -3.9 C (25.0 F) |
| 1988 | -5.0 C (23.0 F) |
| 1989 | -5.0 C (23.0 F) |
| 1990 | -0.6 C (30.9 F) |
| 1991 | -0.6 C (30.9 F) |
| 1992 | -6.7 C (19.9 F) |
| 1993 | -4.4 C (24.1 F) |
| 1994 | -3.9 C (25.0 F) |
| 1995 | -5.0 C (23.0 F) |
| 1996 | -3.3 C (26.1 F) |
| 1997 | -5.0 C (23.0 F) |
| 1998 | -2.8 C (27.0 F) |
| 1999 | -3.3 C (26.1 F) |
| 2000 | -2.2 C (28.0 F) |
| 2001 | -1.7 C (28.9 F) |
| 2002 | -2.2 C (28.0 F) |
| 2003 | -3.9 C (25.0 F) |
| 2004 | -1.1 C (30.0 F) |
| 2005 | -1.1 C (30.0 F) |
| 2006 | -3.9 C (25.0 F) |
| 2007 | 0.6 C (33.1 F) |
| 2008 | 0.0 C (32.0 F) |
| 2009 | 0.0 C (32.0 F) |
| 2010 | -5.0 C (23.0 F) |
| 2011 | -2.2 C (28.0 F) |
| 2012 | 1.7 C (35.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1922 | 36.1 mm (1.4 in) |
| 1923 | 22.6 mm (0.9 in) |
| 1924 | 6.1 mm (0.24 in) |
| 1925 | 6.1 mm (0.24 in) |
| 1926 | 4.8 mm (0.19 in) |
| 1927 | 42.4 mm (1.7 in) |
| 1928 | 43.7 mm (1.7 in) |
| 1929 | 62.0 mm (2.4 in) |
| 1930 | 59.9 mm (2.4 in) |
| 1931 | 39.9 mm (1.6 in) |
| 1932 | 58.9 mm (2.3 in) |
| 1933 | 51.8 mm (2.0 in) |
| 1934 | 34.8 mm (1.4 in) |
| 1935 | 79.8 mm (3.1 in) |
| 1936 | 20.8 mm (0.8 in) |
| 1938 | 36.3 mm (1.4 in) |
| 1939 | 26.4 mm (1.0 in) |
| 1940 | 26.2 mm (1.0 in) |
| 1941 | 42.4 mm (1.7 in) |
| 1942 | 45.0 mm (1.8 in) |
| 1943 | 46.2 mm (1.8 in) |
| 1944 | 58.2 mm (2.3 in) |
| 1945 | 17.8 mm (0.7 in) |
| 1946 | 29.2 mm (1.1 in) |
| 1947 | 63.8 mm (2.5 in) |
| 1948 | 33.5 mm (1.3 in) |
| 1949 | 69.3 mm (2.7 in) |
| 1950 | 48.5 mm (1.9 in) |
| 1951 | 33.3 mm (1.3 in) |
| 1952 | 39.9 mm (1.6 in) |
| 1953 | 43.4 mm (1.7 in) |
| 1954 | 45.0 mm (1.8 in) |
| 1955 | 69.3 mm (2.7 in) |
| 1956 | 43.9 mm (1.7 in) |
| 1957 | 33.8 mm (1.3 in) |
| 1958 | 31.5 mm (1.2 in) |
| 1959 | 50.3 mm (2.0 in) |
| 1960 | 45.0 mm (1.8 in) |
| 1961 | 43.9 mm (1.7 in) |
| 1962 | 41.4 mm (1.6 in) |
| 1963 | 55.9 mm (2.2 in) |
| 1964 | 86.4 mm (3.4 in) |
| 1965 | 45.5 mm (1.8 in) |
| 1966 | 39.4 mm (1.6 in) |
| 1967 | 31.0 mm (1.2 in) |
| 1968 | 53.1 mm (2.1 in) |
| 1969 | 49.3 mm (1.9 in) |
| 1970 | 31.5 mm (1.2 in) |
| 1971 | 84.3 mm (3.3 in) |
| 1972 | 44.2 mm (1.7 in) |
| 1973 | 29.0 mm (1.1 in) |
| 1974 | 36.3 mm (1.4 in) |
| 1975 | 47.5 mm (1.9 in) |
| 1976 | 41.4 mm (1.6 in) |
| 1977 | 25.1 mm (1.0 in) |
| 1978 | 31.8 mm (1.3 in) |
| 1979 | 34.8 mm (1.4 in) |
| 1980 | 61.0 mm (2.4 in) |
| 1981 | 48.8 mm (1.9 in) |
| 1982 | 15.5 mm (0.6 in) |
| 1983 | 18.8 mm (0.7 in) |
| 1984 | 43.7 mm (1.7 in) |
| 1985 | 44.5 mm (1.8 in) |
| 1986 | 37.8 mm (1.5 in) |
| 1987 | 27.9 mm (1.1 in) |
| 1988 | 63.8 mm (2.5 in) |
| 1989 | 33.3 mm (1.3 in) |
| 1990 | 41.4 mm (1.6 in) |
| 1991 | 35.8 mm (1.4 in) |
| 1992 | 32.8 mm (1.3 in) |
| 1993 | 54.9 mm (2.2 in) |
| 1994 | 45.5 mm (1.8 in) |
| 1995 | 22.6 mm (0.9 in) |
| 1996 | 43.4 mm (1.7 in) |
| 1997 | 24.4 mm (1.0 in) |
| 1998 | 25.4 mm (1.0 in) |
| 1999 | 22.4 mm (0.9 in) |
| 2000 | 33.8 mm (1.3 in) |
| 2001 | 58.7 mm (2.3 in) |
| 2002 | 43.9 mm (1.7 in) |
| 2003 | 92.5 mm (3.6 in) |
| 2004 | 68.8 mm (2.7 in) |
| 2005 | 37.3 mm (1.5 in) |
| 2006 | 54.4 mm (2.1 in) |
| 2007 | 36.3 mm (1.4 in) |
| 2008 | 37.8 mm (1.5 in) |
| 2009 | 58.9 mm (2.3 in) |
| 2010 | 43.7 mm (1.7 in) |
| 2011 | 37.6 mm (1.5 in) |
| 2012 | 24.9 mm (1.0 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1922 | 75.5 mm (3.0 in) |
| 1923 | 29.2 mm (1.1 in) |
| 1924 | 7.1 mm (0.28 in) |
| 1925 | 13.0 mm (0.5 in) |
| 1926 | 11.4 mm (0.4 in) |
| 1927 | 42.4 mm (1.7 in) |
| 1928 | 45.8 mm (1.8 in) |
| 1929 | 105.4 mm (4.1 in) |
| 1930 | 112.5 mm (4.4 in) |
| 1931 | 69.6 mm (2.7 in) |
| 1932 | 136.4 mm (5.4 in) |
| 1933 | 91.5 mm (3.6 in) |
| 1934 | 45.0 mm (1.8 in) |
| 1935 | 204.6 mm (8.1 in) |
| 1936 | 46.4 mm (1.8 in) |
| 1938 | 73.4 mm (2.9 in) |
| 1939 | 37.3 mm (1.5 in) |
| 1940 | 49.6 mm (2.0 in) |
| 1941 | 78.7 mm (3.1 in) |
| 1942 | 82.8 mm (3.3 in) |
| 1943 | 97.8 mm (3.9 in) |
| 1944 | 105.5 mm (4.2 in) |
| 1945 | 43.2 mm (1.7 in) |
| 1946 | 49.0 mm (1.9 in) |
| 1947 | 82.6 mm (3.3 in) |
| 1948 | 71.3 mm (2.8 in) |
| 1949 | 73.1 mm (2.9 in) |
| 1950 | 93.2 mm (3.7 in) |
| 1951 | 36.3 mm (1.4 in) |
| 1952 | 80.4 mm (3.2 in) |
| 1953 | 67.5 mm (2.7 in) |
| 1954 | 96.2 mm (3.8 in) |
| 1955 | 89.2 mm (3.5 in) |
| 1956 | 63.9 mm (2.5 in) |
| 1957 | 65.6 mm (2.6 in) |
| 1958 | 79.8 mm (3.1 in) |
| 1959 | 126.5 mm (5.0 in) |
| 1960 | 70.2 mm (2.8 in) |
| 1961 | 98.5 mm (3.9 in) |
| 1962 | 70.6 mm (2.8 in) |
| 1963 | 90.5 mm (3.6 in) |
| 1964 | 104.3 mm (4.1 in) |
| 1965 | 51.6 mm (2.0 in) |
| 1966 | 59.5 mm (2.3 in) |
| 1967 | 53.6 mm (2.1 in) |
| 1968 | 86.4 mm (3.4 in) |
| 1969 | 60.5 mm (2.4 in) |
| 1970 | 74.4 mm (2.9 in) |
| 1971 | 121.3 mm (4.8 in) |
| 1972 | 60.8 mm (2.4 in) |
| 1973 | 85.7 mm (3.4 in) |
| 1974 | 83.3 mm (3.3 in) |
| 1975 | 76.8 mm (3.0 in) |
| 1976 | 74.8 mm (2.9 in) |
| 1977 | 29.6 mm (1.2 in) |
| 1978 | 46.2 mm (1.8 in) |
| 1979 | 63.5 mm (2.5 in) |
| 1980 | 62.8 mm (2.5 in) |
| 1981 | 93.8 mm (3.7 in) |
| 1982 | 33.3 mm (1.3 in) |
| 1983 | 20.6 mm (0.8 in) |
| 1984 | 93.7 mm (3.7 in) |
| 1985 | 61.8 mm (2.4 in) |
| 1986 | 57.6 mm (2.3 in) |
| 1987 | 52.6 mm (2.1 in) |
| 1988 | 76.3 mm (3.0 in) |
| 1989 | 54.8 mm (2.2 in) |
| 1990 | 49.1 mm (1.9 in) |
| 1991 | 73.7 mm (2.9 in) |
| 1992 | 48.8 mm (1.9 in) |
| 1993 | 59.8 mm (2.4 in) |
| 1994 | 56.4 mm (2.2 in) |
| 1995 | 31.3 mm (1.2 in) |
| 1996 | 93.6 mm (3.7 in) |
| 1997 | 51.9 mm (2.0 in) |
| 1998 | 64.3 mm (2.5 in) |
| 1999 | 70.2 mm (2.8 in) |
| 2000 | 48.3 mm (1.9 in) |
| 2001 | 65.1 mm (2.6 in) |
| 2002 | 66.8 mm (2.6 in) |
| 2003 | 131.1 mm (5.2 in) |
| 2004 | 103.7 mm (4.1 in) |
| 2005 | 73.4 mm (2.9 in) |
| 2006 | 56.7 mm (2.2 in) |
| 2007 | 48.3 mm (1.9 in) |
| 2008 | 56.0 mm (2.2 in) |
| 2009 | 61.8 mm (2.4 in) |
| 2010 | 99.2 mm (3.9 in) |
| 2011 | 69.8 mm (2.7 in) |
| 2012 | 27.2 mm (1.1 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1922 | 62 days |
| 1923 | 79 days |
| 1924 | 157 days |
| 1925 | 110 days |
| 1926 | 169 days |
| 1927 | 120 days |
| 1928 | 50 days |
| 1929 | 95 days |
| 1930 | 82 days |
| 1931 | 58 days |
| 1932 | 87 days |
| 1933 | 113 days |
| 1934 | 64 days |
| 1935 | 98 days |
| 1936 | 69 days |
| 1938 | 82 days |
| 1939 | 64 days |
| 1940 | 52 days |
| 1941 | 24 days |
| 1942 | 72 days |
| 1943 | 79 days |
| 1944 | 43 days |
| 1945 | 118 days |
| 1946 | 45 days |
| 1947 | 107 days |
| 1948 | 71 days |
| 1949 | 61 days |
| 1950 | 62 days |
| 1951 | 71 days |
| 1952 | 51 days |
| 1953 | 87 days |
| 1954 | 57 days |
| 1955 | 96 days |
| 1956 | 73 days |
| 1957 | 107 days |
| 1958 | 53 days |
| 1959 | 57 days |
| 1960 | 104 days |
| 1961 | 87 days |
| 1962 | 101 days |
| 1963 | 58 days |
| 1964 | 47 days |
| 1965 | 50 days |
| 1966 | 56 days |
| 1967 | 64 days |
| 1968 | 52 days |
| 1969 | 39 days |
| 1970 | 81 days |
| 1971 | 67 days |
| 1972 | 51 days |
| 1973 | 60 days |
| 1974 | 46 days |
| 1975 | 111 days |
| 1976 | 70 days |
| 1977 | 31 days |
| 1978 | 41 days |
| 1979 | 36 days |
| 1980 | 58 days |
| 1981 | 36 days |
| 1982 | 61 days |
| 1983 | 71 days |
| 1984 | 47 days |
| 1985 | 68 days |
| 1986 | 99 days |
| 1987 | 117 days |
| 1988 | 118 days |
| 1989 | 67 days |
| 1990 | 56 days |
| 1991 | 68 days |
| 1992 | 42 days |
| 1993 | 44 days |
| 1994 | 78 days |
| 1995 | 32 days |
| 1996 | 97 days |
| 1997 | 76 days |
| 1998 | 136 days |
| 1999 | 73 days |
| 2000 | 95 days |
| 2001 | 65 days |
| 2002 | 81 days |
| 2003 | 96 days |
| 2004 | 42 days |
| 2005 | 84 days |
| 2006 | 49 days |
| 2007 | 49 days |
| 2008 | 83 days |
| 2009 | 82 days |
| 2010 | 63 days |
| 2011 | 104 days |
| 2012 | 37 days |
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
63 years with a frostAcross 63 years with a frost, the median last spring frost at Ixmiquilpan (Smn) falls on 18 February and the median first autumn frost on 17 November, which leaves a median of 275 days between them.
In 1968 to 2011 the median growing season was 276 days. That is 2 days more than in 1926 to 1963.
Fitted over all years, the growing season changes by +0.5 days per decade at this station.
| Measure | Median, all years | Earliest period (1926 to 1963) | Recent period (1968 to 2011) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 18 February | 18 February | 22 February | 4 days later | +0.7 days per decade |
| First autumn frost | 17 November | 13 November | 23 November | 10 days later | +1.2 days per decade |
| Growing days | 275 days | 274 days | 276 days | 2 days more | +0.5 days per decade |
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
88 years, 1923 to 2011A day with at least 40.8 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 86.0 mm (3.4 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 40.8 mm (1.6 in) | |
| 5 years | 55.7 mm (2.2 in) | |
| 10 years | 64.3 mm (2.5 in) | |
| 25 years | 73.9 mm (2.9 in) | |
| 50 years | 80.3 mm (3.2 in) | |
| 100 years | 86.0 mm (3.4 in) | Longer than the 88 years of record |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 88 years of values from 1923 to 2011.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 92.5 mm (3.6 in) in 2003; 86.4 mm (3.4 in) in 1964; 84.3 mm (3.3 in) in 1971.
Download the Data
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). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).