Ahuacatlan Weather Records (MXN00018002)
Record envelope, standing records and threshold days for Ahuacatlan (MXN00018002), Mexico, with 90 years of record.
Key Facts for Ahuacatlan
- Ahuacatlan (MXN00018002) is a weather station in Mexico at 21.05 latitude and -104.48 longitude, 999 m (3,277 ft) above sea level.
- The station reports from 1924 to 2013, 90 years of record.
- 1,464 records set at Ahuacatlan still stand.
- Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
- Ahuacatlan set a daily record precipitation of 27.4 mm (1.1 in) on 30 December 2013.
About the Station
- Location: Mexico, 21.05 latitude, -104.48 longitude.
- Elevation: 999 m (3,277 ft).
- Period of record: 1924 to 2013, 90 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 | 38.3 C (100.9 F) | -1.1 C (30.0 F) | n/a | n/a |
| Feb | 40.6 C (105.1 F) | 0.6 C (33.1 F) | n/a | n/a |
| Mar | 41.1 C (106.0 F) | 0.6 C (33.1 F) | n/a | n/a |
| Apr | 42.8 C (109.0 F) | 0.6 C (33.1 F) | n/a | n/a |
| May | 42.2 C (108.0 F) | 5.6 C (42.1 F) | n/a | n/a |
| Jun | 42.8 C (109.0 F) | 9.4 C (48.9 F) | n/a | n/a |
| Jul | 40.6 C (105.1 F) | 12.8 C (55.0 F) | n/a | n/a |
| Aug | 40.6 C (105.1 F) | 11.7 C (53.1 F) | n/a | n/a |
| Sep | 40.0 C (104.0 F) | 7.8 C (46.0 F) | n/a | n/a |
| Oct | 41.7 C (107.1 F) | 5.6 C (42.1 F) | n/a | n/a |
| Nov | 40.0 C (104.0 F) | 2.8 C (37.0 F) | n/a | n/a |
| Dec | 37.8 C (100.0 F) | 0.0 C (32.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1924 | 11 |
| 1925 | 28 |
| 1926 | 32 |
| 1927 | 25 |
| 1928 | 15 |
| 1929 | 22 |
| 1930 | 17 |
| 1931 | 22 |
| 1932 | 21 |
| 1933 | 22 |
| 1934 | 31 |
| 1935 | 15 |
| 1936 | 17 |
| 1937 | 14 |
| 1938 | 19 |
| 1939 | 14 |
| 1940 | 28 |
| 1941 | 48 |
| 1942 | 133 |
| 1943 | 56 |
| 1944 | 52 |
| 1945 | 50 |
| 1946 | 65 |
| 1947 | 21 |
| 1948 | 17 |
| 1949 | 12 |
| 1950 | 7 |
| 1951 | 19 |
| 1952 | 7 |
| 1953 | 10 |
| 1954 | 5 |
| 1955 | 6 |
| 1956 | 6 |
| 1957 | 15 |
| 1958 | 10 |
| 1959 | 6 |
| 1960 | 5 |
| 1961 | 10 |
| 1962 | 2 |
| 1963 | 10 |
| 1964 | 8 |
| 1965 | 6 |
| 1966 | 23 |
| 1967 | 6 |
| 1968 | 9 |
| 1969 | 7 |
| 1970 | 11 |
| 1971 | 6 |
| 1972 | 5 |
| 1973 | 14 |
| 1974 | 4 |
| 1975 | 8 |
| 1976 | 8 |
| 1977 | 3 |
| 1978 | 10 |
| 1979 | 7 |
| 1980 | 24 |
| 1981 | 34 |
| 1982 | 10 |
| 1983 | 20 |
| 1984 | 5 |
| 1985 | 10 |
| 1986 | 15 |
| 1987 | 16 |
| 1988 | 15 |
| 1989 | 6 |
| 1990 | 2 |
| 1991 | 15 |
| 1992 | 11 |
| 1993 | 10 |
| 1994 | 5 |
| 1995 | 6 |
| 1996 | 9 |
| 1997 | 16 |
| 1998 | 12 |
| 1999 | 17 |
| 2000 | 2 |
| 2001 | 6 |
| 2002 | 6 |
| 2003 | 18 |
| 2004 | 12 |
| 2005 | 22 |
| 2006 | 2 |
| 2007 | 8 |
| 2008 | 9 |
| 2009 | 13 |
| 2010 | 18 |
| 2011 | 6 |
| 2012 | 17 |
| 2013 | 7 |
All-Time Record Progression
4 new records| Date | Kind | Detail |
|---|---|---|
| 1955-09-24 | Record daily precipitation | Record daily precipitation 125.5 mm (4.9 in) |
| 1987-01-12 | Record low maximum temperature | Record low maximum temperature 13.9 C (57.0 F) |
| 2002-07-21 | Record daily precipitation | Record daily precipitation 158.0 mm (6.2 in) |
| 2011-01-02 | Record low minimum temperature | Record low minimum temperature -1.1 C (30.0 F) |
Wettest Day of Each Month
Jul: 158.0 mm (6.2 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 50.8 mm (2.0 in) | 22 January 1961 |
| Feb | 48.8 mm (1.9 in) | 25 February 1987 |
| Mar | 63.8 mm (2.5 in) | 4 March 1968 |
| Apr | 47.8 mm (1.9 in) | 13 April 1959 |
| May | 56.9 mm (2.2 in) | 19 May 2009 |
| Jun | 84.8 mm (3.3 in) | 2 June 1952 |
| Jul | 158.0 mm (6.2 in) | 21 July 2002 |
| Aug | 117.9 mm (4.6 in) | 4 August 1935 |
| Sep | 125.5 mm (4.9 in) | 24 September 1955 |
| Oct | 86.9 mm (3.4 in) | 16 October 1934 |
| Nov | 47.0 mm (1.9 in) | 15 November 2013 |
| Dec | 55.9 mm (2.2 in) | 31 December 2009 |
Period of Record Coverage
1924 to 2013| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1924 | 116 | 32% | No |
| 1925 | 321 | 88% | No |
| 1926 | 304 | 83% | No |
| 1927 | 364 | 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 | 365 | 100% | Yes |
| 1935 | 362 | 99% | Yes |
| 1936 | 365 | 100% | Yes |
| 1937 | 364 | 100% | Yes |
| 1938 | 364 | 100% | Yes |
| 1939 | 365 | 100% | Yes |
| 1940 | 366 | 100% | Yes |
| 1941 | 365 | 100% | Yes |
| 1942 | 365 | 100% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 366 | 100% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 365 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 364 | 100% | Yes |
| 1951 | 364 | 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 | 364 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 364 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 363 | 99% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 364 | 99% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 364 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 365 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 334 | 92% | Yes |
| 1982 | 335 | 92% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 364 | 100% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 59 | 16% | No |
| 1991 | 365 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 365 | 100% | Yes |
| 1994 | 336 | 92% | Yes |
| 1995 | 242 | 66% | No |
| 1996 | 366 | 100% | Yes |
| 1997 | 364 | 100% | Yes |
| 1998 | 273 | 75% | No |
| 1999 | 365 | 100% | Yes |
| 2000 | 184 | 50% | No |
| 2001 | 365 | 100% | Yes |
| 2002 | 365 | 100% | Yes |
| 2003 | 364 | 100% | Yes |
| 2004 | 361 | 99% | Yes |
| 2005 | 364 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 366 | 100% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 364 | 100% | Yes |
| 2012 | 276 | 75% | No |
| 2013 | 307 | 84% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 30 December 2013 | Ahuacatlan, MX | daily rain | 27.4 mm (1.1 in) | 19.5 mm (0.8 in) | 31 years | 41 of 100 (Notable) |
| 29 December 2013 | Ahuacatlan, MX | daily rain | 13.2 mm (0.5 in) | 9.4 mm (0.37 in) | 56 years | 20 of 100 (Routine) |
| 27 December 2013 | Ahuacatlan, MX | daily rain | 10.2 mm (0.4 in) | 3.3 mm (0.13 in) | 88 years | 20 of 100 (Routine) |
| 26 December 2013 | Ahuacatlan, MX | daily rain | 25.4 mm (1.0 in) | 20.6 mm (0.8 in) | 39 years | 44 of 100 (Notable) |
| 25 December 2013 | Ahuacatlan, MX | daily rain | 47.2 mm (1.9 in) | 33.7 mm (1.3 in) | 74 years | 71 of 100 (Major) |
| 15 November 2013 | Ahuacatlan, MX | monthly rain | 47.0 mm (1.9 in) | 1.5 mm (0.06 in) | 83 years | 45 of 100 (Notable) |
| 6 November 2013 | Ahuacatlan, MX | daily rain | 16.8 mm (0.7 in) | 14.5 mm (0.6 in) | 39 years | 20 of 100 (Routine) |
| 2 November 2013 | Ahuacatlan, MX | daily high max | 36.7 C (98.1 F) | 0.6 C (1.1 F) | 35 years | 21 of 100 (Routine) |
| 19 September 2013 | Ahuacatlan, MX | daily rain | 45.2 mm (1.8 in) | 5.1 mm (0.20 in) | 10 years | 15 of 100 (Routine) |
| 15 September 2013 | Ahuacatlan, MX | daily high max (Tie) | 36.7 C (98.1 F) | tie | 71 years | 7 of 100 (Routine) |
| 14 September 2013 | Ahuacatlan, MX | daily high max | 38.9 C (102.0 F) | 1.1 C (2.0 F) | 71 years | 34 of 100 (Routine) |
| 13 September 2013 | Ahuacatlan, MX | daily high max | 37.8 C (100.0 F) | 2.2 C (4.0 F) | 88 years | 43 of 100 (Notable) |
| 12 September 2013 | Ahuacatlan, MX | daily high max (Tie) | 38.9 C (102.0 F) | tie | 84 years | 8 of 100 (Routine) |
| 11 September 2013 | Ahuacatlan, MX | daily high max | 37.8 C (100.0 F) | 1.7 C (3.1 F) | 71 years | 36 of 100 (Notable) |
| 9 September 2013 | Ahuacatlan, MX | daily high max (Tie) | 36.7 C (98.1 F) | tie | 70 years | 7 of 100 (Routine) |
| 29 August 2013 | Ahuacatlan, MX | daily high max | 37.8 C (100.0 F) | 1.1 C (2.0 F) | 71 years | 34 of 100 (Routine) |
| 25 August 2013 | Ahuacatlan, MX | daily high max | 38.9 C (102.0 F) | 2.2 C (4.0 F) | 71 years | 39 of 100 (Notable) |
| 20 July 2013 | Ahuacatlan, MX | daily rain | 88.4 mm (3.5 in) | 33.5 mm (1.3 in) | 38 years | 44 of 100 (Notable) |
| 26 June 2013 | Ahuacatlan, MX | daily low max (Tie) | 26.7 C (80.1 F) | tie | 14 years | 3 of 100 (Routine) |
| 3 March 2013 | Ahuacatlan, MX | daily high max | 37.8 C (100.0 F) | 1.1 C (2.0 F) | 36 years | 23 of 100 (Routine) |
Climate Trend
77 complete years, 1927 to 2010| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1927 | 21.9 C | -0.89 C |
| 1928 | 22.2 C | -0.58 C |
| 1929 | 21.8 C | -0.97 C |
| 1930 | 22.1 C | -0.73 C |
| 1931 | 21.7 C | -1.08 C |
| 1932 | 21.7 C | -1.05 C |
| 1933 | 21.7 C | -1.09 C |
| 1934 | 21.7 C | -1.06 C |
| 1935 | 21.5 C | -1.33 C |
| 1936 | 21.7 C | -1.07 C |
| 1937 | 21.9 C | -0.87 C |
| 1938 | 21.7 C | -1.06 C |
| 1939 | 21.5 C | -1.27 C |
| 1940 | 22.0 C | -0.77 C |
| 1941 | 22.9 C | +0.15 C |
| 1942 | 25.8 C | +2.97 C |
| 1943 | 25.1 C | +2.35 C |
| 1944 | 24.8 C | +1.97 C |
| 1945 | 25.2 C | +2.43 C |
| 1946 | 25.1 C | +2.30 C |
| 1947 | 24.2 C | +1.39 C |
| 1948 | 24.4 C | +1.63 C |
| 1949 | 23.8 C | +1.01 C |
| 1950 | 24.0 C | +1.19 C |
| 1951 | 23.7 C | +0.92 C |
| 1952 | 23.5 C | +0.74 C |
| 1953 | 23.4 C | +0.58 C |
| 1954 | 23.7 C | +0.96 C |
| 1955 | 22.9 C | +0.15 C |
| 1956 | 23.2 C | +0.41 C |
| 1957 | 23.3 C | +0.55 C |
| 1958 | 23.2 C | +0.40 C |
| 1959 | 23.2 C | +0.46 C |
| 1960 | 23.1 C | +0.28 C |
| 1961 | 23.0 C | +0.26 C |
| 1962 | 23.0 C | +0.19 C |
| 1963 | 23.7 C | +0.92 C |
| 1964 | 23.5 C | +0.69 C |
| 1965 | 23.5 C | +0.71 C |
| 1966 | 23.6 C | +0.82 C |
| 1967 | 23.1 C | +0.32 C |
| 1968 | 23.0 C | +0.21 C |
| 1969 | 23.2 C | +0.45 C |
| 1970 | 23.2 C | +0.38 C |
| 1971 | 23.1 C | +0.33 C |
| 1972 | 23.8 C | +1.03 C |
| 1973 | 23.2 C | +0.46 C |
| 1974 | 23.8 C | +1.01 C |
| 1975 | 23.3 C | +0.56 C |
| 1976 | 23.7 C | +0.94 C |
| 1977 | 23.9 C | +1.12 C |
| 1978 | 23.9 C | +1.07 C |
| 1979 | 24.0 C | +1.23 C |
| 1980 | 23.7 C | +0.93 C |
| 1983 | 23.6 C | +0.78 C |
| 1984 | 22.8 C | +0.04 C |
| 1985 | 21.9 C | -0.93 C |
| 1986 | 21.4 C | -1.39 C |
| 1987 | 21.3 C | -1.49 C |
| 1988 | 21.6 C | -1.20 C |
| 1989 | 21.5 C | -1.26 C |
| 1991 | 21.5 C | -1.31 C |
| 1992 | 21.4 C | -1.39 C |
| 1993 | 21.8 C | -1.01 C |
| 1996 | 21.7 C | -1.05 C |
| 1997 | 21.6 C | -1.17 C |
| 1999 | 21.5 C | -1.30 C |
| 2001 | 21.7 C | -1.05 C |
| 2002 | 22.0 C | -0.81 C |
| 2003 | 21.4 C | -1.35 C |
| 2004 | 21.4 C | -1.43 C |
| 2005 | 22.0 C | -0.76 C |
| 2006 | 22.1 C | -0.64 C |
| 2007 | 22.0 C | -0.77 C |
| 2008 | 21.8 C | -0.98 C |
| 2009 | 22.6 C | -0.16 C |
| 2010 | 21.0 C | -1.74 C |
The annual mean temperature here has fallen by 0.13 C (0.03 to 0.23) per decade over 1927 to 2010. In Fahrenheit: 0.2 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 77 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.13 C (-0.23 to -0.03) per decade | -0.2 F (-0.4 to -0.1) per decade | 1927 to 2010 | 77 | Fall |
| Mean daily maximum | -0.2 C (-0.3 to -0.1) per decade | -0.4 F (-0.5 to -0.2) per decade | 1927 to 2010 | 77 | Fall |
| Mean daily minimum | -0.1 C (-0.2 to 0.1) per decade | -0.1 F (-0.4 to 0.1) per decade | 1927 to 2010 | 77 | 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
1924 to 2013| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 42.8 C (109.0 F) | 1946 | 37.8 C (100.0 F) | 90 |
| Coldest night (TNn) | -1.1 C (30.0 F) | 2011 | 3.9 C (39.0 F) | 89 |
| Wettest day (Rx1day) | 158.0 mm (6.2 in) | 2002 | 55.4 mm (2.2 in) | 90 |
| Wettest five days (Rx5day) | 233.7 mm (9.2 in) | 2004 | 112.9 mm (4.4 in) | 90 |
| Longest dry spell (CDD) | 165 days | 1989 | 73 days | 90 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1924 | 36.7 C (98.1 F) |
| 1925 | 39.4 C (102.9 F) |
| 1926 | 36.7 C (98.1 F) |
| 1927 | 40.6 C (105.1 F) |
| 1928 | 40.0 C (104.0 F) |
| 1929 | 39.4 C (102.9 F) |
| 1930 | 38.3 C (100.9 F) |
| 1931 | 36.7 C (98.1 F) |
| 1932 | 40.0 C (104.0 F) |
| 1933 | 38.3 C (100.9 F) |
| 1934 | 36.7 C (98.1 F) |
| 1935 | 36.7 C (98.1 F) |
| 1936 | 37.2 C (99.0 F) |
| 1937 | 37.2 C (99.0 F) |
| 1938 | 37.8 C (100.0 F) |
| 1939 | 37.8 C (100.0 F) |
| 1940 | 40.0 C (104.0 F) |
| 1941 | 40.0 C (104.0 F) |
| 1942 | 41.7 C (107.1 F) |
| 1943 | 40.6 C (105.1 F) |
| 1944 | 42.2 C (108.0 F) |
| 1945 | 40.6 C (105.1 F) |
| 1946 | 42.8 C (109.0 F) |
| 1947 | 38.9 C (102.0 F) |
| 1948 | 40.0 C (104.0 F) |
| 1949 | 38.9 C (102.0 F) |
| 1950 | 39.4 C (102.9 F) |
| 1951 | 40.0 C (104.0 F) |
| 1952 | 38.9 C (102.0 F) |
| 1953 | 40.6 C (105.1 F) |
| 1954 | 38.3 C (100.9 F) |
| 1955 | 40.0 C (104.0 F) |
| 1956 | 40.6 C (105.1 F) |
| 1957 | 37.8 C (100.0 F) |
| 1958 | 38.9 C (102.0 F) |
| 1959 | 36.7 C (98.1 F) |
| 1960 | 39.4 C (102.9 F) |
| 1961 | 38.9 C (102.0 F) |
| 1962 | 37.2 C (99.0 F) |
| 1963 | 39.4 C (102.9 F) |
| 1964 | 40.6 C (105.1 F) |
| 1965 | 40.0 C (104.0 F) |
| 1966 | 37.2 C (99.0 F) |
| 1967 | 37.2 C (99.0 F) |
| 1968 | 36.7 C (98.1 F) |
| 1969 | 37.8 C (100.0 F) |
| 1970 | 37.2 C (99.0 F) |
| 1971 | 37.2 C (99.0 F) |
| 1972 | 37.8 C (100.0 F) |
| 1973 | 38.9 C (102.0 F) |
| 1974 | 37.8 C (100.0 F) |
| 1975 | 40.0 C (104.0 F) |
| 1976 | 37.8 C (100.0 F) |
| 1977 | 37.2 C (99.0 F) |
| 1978 | 37.8 C (100.0 F) |
| 1979 | 40.0 C (104.0 F) |
| 1980 | 37.8 C (100.0 F) |
| 1981 | 37.2 C (99.0 F) |
| 1982 | 36.7 C (98.1 F) |
| 1983 | 37.8 C (100.0 F) |
| 1984 | 35.6 C (96.1 F) |
| 1985 | 37.8 C (100.0 F) |
| 1986 | 37.8 C (100.0 F) |
| 1987 | 37.8 C (100.0 F) |
| 1988 | 38.9 C (102.0 F) |
| 1989 | 38.9 C (102.0 F) |
| 1990 | 31.7 C (89.1 F) |
| 1991 | 37.8 C (100.0 F) |
| 1992 | 38.3 C (100.9 F) |
| 1993 | 40.0 C (104.0 F) |
| 1994 | 40.0 C (104.0 F) |
| 1995 | 37.8 C (100.0 F) |
| 1996 | 40.0 C (104.0 F) |
| 1997 | 37.8 C (100.0 F) |
| 1998 | 40.0 C (104.0 F) |
| 1999 | 37.8 C (100.0 F) |
| 2000 | 40.0 C (104.0 F) |
| 2001 | 38.9 C (102.0 F) |
| 2002 | 37.8 C (100.0 F) |
| 2003 | 37.8 C (100.0 F) |
| 2004 | 35.6 C (96.1 F) |
| 2005 | 37.8 C (100.0 F) |
| 2006 | 35.6 C (96.1 F) |
| 2007 | 35.6 C (96.1 F) |
| 2008 | 35.6 C (96.1 F) |
| 2009 | 36.7 C (98.1 F) |
| 2010 | 36.7 C (98.1 F) |
| 2011 | 35.6 C (96.1 F) |
| 2012 | 42.8 C (109.0 F) |
| 2013 | 38.9 C (102.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1924 | 3.9 C (39.0 F) |
| 1925 | 3.3 C (37.9 F) |
| 1926 | 2.8 C (37.0 F) |
| 1927 | 5.0 C (41.0 F) |
| 1928 | 3.9 C (39.0 F) |
| 1929 | 0.6 C (33.1 F) |
| 1930 | 2.2 C (36.0 F) |
| 1931 | 0.0 C (32.0 F) |
| 1932 | 2.8 C (37.0 F) |
| 1933 | 3.9 C (39.0 F) |
| 1934 | 2.8 C (37.0 F) |
| 1935 | 0.6 C (33.1 F) |
| 1936 | 0.6 C (33.1 F) |
| 1937 | 2.8 C (37.0 F) |
| 1938 | 2.2 C (36.0 F) |
| 1939 | 1.7 C (35.1 F) |
| 1940 | 0.6 C (33.1 F) |
| 1941 | 1.7 C (35.1 F) |
| 1942 | 5.0 C (41.0 F) |
| 1943 | 6.1 C (43.0 F) |
| 1944 | 6.7 C (44.1 F) |
| 1945 | 6.7 C (44.1 F) |
| 1946 | 5.6 C (42.1 F) |
| 1947 | 5.6 C (42.1 F) |
| 1948 | 5.0 C (41.0 F) |
| 1949 | 6.7 C (44.1 F) |
| 1950 | 3.9 C (39.0 F) |
| 1951 | 4.4 C (39.9 F) |
| 1952 | 3.3 C (37.9 F) |
| 1953 | 4.4 C (39.9 F) |
| 1954 | 5.6 C (42.1 F) |
| 1955 | 1.1 C (34.0 F) |
| 1956 | 2.8 C (37.0 F) |
| 1957 | 2.8 C (37.0 F) |
| 1958 | 4.4 C (39.9 F) |
| 1959 | 4.4 C (39.9 F) |
| 1960 | 2.2 C (36.0 F) |
| 1961 | 4.4 C (39.9 F) |
| 1962 | 4.4 C (39.9 F) |
| 1963 | 5.0 C (41.0 F) |
| 1964 | 6.1 C (43.0 F) |
| 1965 | 6.1 C (43.0 F) |
| 1966 | 6.1 C (43.0 F) |
| 1967 | 3.9 C (39.0 F) |
| 1968 | 5.0 C (41.0 F) |
| 1969 | 5.0 C (41.0 F) |
| 1970 | 5.0 C (41.0 F) |
| 1971 | 1.7 C (35.1 F) |
| 1972 | 5.6 C (42.1 F) |
| 1973 | 5.0 C (41.0 F) |
| 1974 | 3.3 C (37.9 F) |
| 1975 | 5.0 C (41.0 F) |
| 1976 | 5.0 C (41.0 F) |
| 1977 | 5.0 C (41.0 F) |
| 1978 | 5.0 C (41.0 F) |
| 1979 | 5.0 C (41.0 F) |
| 1980 | 7.8 C (46.0 F) |
| 1981 | 8.9 C (48.0 F) |
| 1982 | 7.8 C (46.0 F) |
| 1983 | 5.0 C (41.0 F) |
| 1984 | 5.6 C (42.1 F) |
| 1985 | 4.4 C (39.9 F) |
| 1986 | 1.7 C (35.1 F) |
| 1987 | 0.6 C (33.1 F) |
| 1988 | 0.0 C (32.0 F) |
| 1989 | 3.9 C (39.0 F) |
| 1990 | 0.6 C (33.1 F) |
| 1991 | 0.6 C (33.1 F) |
| 1992 | 1.7 C (35.1 F) |
| 1993 | 1.7 C (35.1 F) |
| 1994 | 3.9 C (39.0 F) |
| 1995 | 3.3 C (37.9 F) |
| 1996 | 3.9 C (39.0 F) |
| 1997 | 1.7 C (35.1 F) |
| 1998 | 0.6 C (33.1 F) |
| 1999 | 1.7 C (35.1 F) |
| 2000 | 1.7 C (35.1 F) |
| 2001 | 1.7 C (35.1 F) |
| 2002 | 1.7 C (35.1 F) |
| 2003 | 1.7 C (35.1 F) |
| 2004 | 2.8 C (37.0 F) |
| 2005 | 1.7 C (35.1 F) |
| 2006 | 1.7 C (35.1 F) |
| 2007 | 2.8 C (37.0 F) |
| 2008 | 1.7 C (35.1 F) |
| 2009 | 2.8 C (37.0 F) |
| 2010 | 1.7 C (35.1 F) |
| 2011 | -1.1 C (30.0 F) |
| 2012 | 5.0 C (41.0 F) |
| 2013 | n/a |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1924 | 46.2 mm (1.8 in) |
| 1925 | 52.3 mm (2.1 in) |
| 1926 | 57.7 mm (2.3 in) |
| 1927 | 54.9 mm (2.2 in) |
| 1928 | 38.4 mm (1.5 in) |
| 1929 | 48.8 mm (1.9 in) |
| 1930 | 44.5 mm (1.8 in) |
| 1931 | 47.0 mm (1.9 in) |
| 1932 | 40.9 mm (1.6 in) |
| 1933 | 52.8 mm (2.1 in) |
| 1934 | 86.9 mm (3.4 in) |
| 1935 | 117.9 mm (4.6 in) |
| 1936 | 47.0 mm (1.9 in) |
| 1937 | 43.9 mm (1.7 in) |
| 1938 | 78.0 mm (3.1 in) |
| 1939 | 51.8 mm (2.0 in) |
| 1940 | 46.0 mm (1.8 in) |
| 1941 | 47.8 mm (1.9 in) |
| 1942 | 61.0 mm (2.4 in) |
| 1943 | 59.9 mm (2.4 in) |
| 1944 | 53.8 mm (2.1 in) |
| 1945 | 37.8 mm (1.5 in) |
| 1946 | 47.5 mm (1.9 in) |
| 1947 | 62.0 mm (2.4 in) |
| 1948 | 39.9 mm (1.6 in) |
| 1949 | 74.9 mm (2.9 in) |
| 1950 | 54.9 mm (2.2 in) |
| 1951 | 54.9 mm (2.2 in) |
| 1952 | 84.8 mm (3.3 in) |
| 1953 | 61.0 mm (2.4 in) |
| 1954 | 62.0 mm (2.4 in) |
| 1955 | 125.5 mm (4.9 in) |
| 1956 | 47.8 mm (1.9 in) |
| 1957 | 47.8 mm (1.9 in) |
| 1958 | 55.9 mm (2.2 in) |
| 1959 | 63.0 mm (2.5 in) |
| 1960 | 80.8 mm (3.2 in) |
| 1961 | 50.8 mm (2.0 in) |
| 1962 | 56.9 mm (2.2 in) |
| 1963 | 66.8 mm (2.6 in) |
| 1964 | 36.8 mm (1.4 in) |
| 1965 | 48.8 mm (1.9 in) |
| 1966 | 51.8 mm (2.0 in) |
| 1967 | 65.8 mm (2.6 in) |
| 1968 | 63.8 mm (2.5 in) |
| 1969 | 35.8 mm (1.4 in) |
| 1970 | 51.8 mm (2.0 in) |
| 1971 | 56.9 mm (2.2 in) |
| 1972 | 62.0 mm (2.4 in) |
| 1973 | 51.8 mm (2.0 in) |
| 1974 | 63.8 mm (2.5 in) |
| 1975 | 64.8 mm (2.6 in) |
| 1976 | 35.3 mm (1.4 in) |
| 1977 | 42.4 mm (1.7 in) |
| 1978 | 34.3 mm (1.4 in) |
| 1979 | 62.0 mm (2.4 in) |
| 1980 | 54.9 mm (2.2 in) |
| 1981 | 47.8 mm (1.9 in) |
| 1982 | 62.0 mm (2.4 in) |
| 1983 | 50.8 mm (2.0 in) |
| 1984 | 73.9 mm (2.9 in) |
| 1985 | 79.8 mm (3.1 in) |
| 1986 | 69.9 mm (2.8 in) |
| 1987 | 59.9 mm (2.4 in) |
| 1988 | 85.9 mm (3.4 in) |
| 1989 | 46.0 mm (1.8 in) |
| 1990 | 30.0 mm (1.2 in) |
| 1991 | 89.9 mm (3.5 in) |
| 1992 | 49.8 mm (2.0 in) |
| 1993 | 45.0 mm (1.8 in) |
| 1994 | 59.9 mm (2.4 in) |
| 1995 | 46.0 mm (1.8 in) |
| 1996 | 69.9 mm (2.8 in) |
| 1997 | 64.8 mm (2.6 in) |
| 1998 | 72.9 mm (2.9 in) |
| 1999 | 77.0 mm (3.0 in) |
| 2000 | 69.9 mm (2.8 in) |
| 2001 | 48.8 mm (1.9 in) |
| 2002 | 158.0 mm (6.2 in) |
| 2003 | 49.8 mm (2.0 in) |
| 2004 | 82.3 mm (3.2 in) |
| 2005 | 44.7 mm (1.8 in) |
| 2006 | 74.9 mm (2.9 in) |
| 2007 | 66.8 mm (2.6 in) |
| 2008 | 50.8 mm (2.0 in) |
| 2009 | 82.8 mm (3.3 in) |
| 2010 | 57.9 mm (2.3 in) |
| 2011 | 41.9 mm (1.6 in) |
| 2012 | 96.8 mm (3.8 in) |
| 2013 | 88.4 mm (3.5 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1924 | 91.4 mm (3.6 in) |
| 1925 | 113.0 mm (4.4 in) |
| 1926 | 134.7 mm (5.3 in) |
| 1927 | 90.3 mm (3.6 in) |
| 1928 | 93.5 mm (3.7 in) |
| 1929 | 132.2 mm (5.2 in) |
| 1930 | 87.4 mm (3.4 in) |
| 1931 | 120.4 mm (4.7 in) |
| 1932 | 74.0 mm (2.9 in) |
| 1933 | 124.5 mm (4.9 in) |
| 1934 | 122.9 mm (4.8 in) |
| 1935 | 146.9 mm (5.8 in) |
| 1936 | 111.0 mm (4.4 in) |
| 1937 | 72.8 mm (2.9 in) |
| 1938 | 189.8 mm (7.5 in) |
| 1939 | 113.3 mm (4.5 in) |
| 1940 | 98.2 mm (3.9 in) |
| 1941 | 136.2 mm (5.4 in) |
| 1942 | 106.5 mm (4.2 in) |
| 1943 | 99.8 mm (3.9 in) |
| 1944 | 111.8 mm (4.4 in) |
| 1945 | 80.4 mm (3.2 in) |
| 1946 | 88.5 mm (3.5 in) |
| 1947 | 109.5 mm (4.3 in) |
| 1948 | 95.5 mm (3.8 in) |
| 1949 | 84.1 mm (3.3 in) |
| 1950 | 115.4 mm (4.5 in) |
| 1951 | 83.9 mm (3.3 in) |
| 1952 | 121.4 mm (4.8 in) |
| 1953 | 101.6 mm (4.0 in) |
| 1954 | 141.2 mm (5.6 in) |
| 1955 | 177.4 mm (7.0 in) |
| 1956 | 109.0 mm (4.3 in) |
| 1957 | 111.8 mm (4.4 in) |
| 1958 | 117.4 mm (4.6 in) |
| 1959 | 112.7 mm (4.4 in) |
| 1960 | 166.4 mm (6.6 in) |
| 1961 | 136.0 mm (5.4 in) |
| 1962 | 110.3 mm (4.3 in) |
| 1963 | 128.9 mm (5.1 in) |
| 1964 | 87.6 mm (3.4 in) |
| 1965 | 81.0 mm (3.2 in) |
| 1966 | 117.7 mm (4.6 in) |
| 1967 | 126.7 mm (5.0 in) |
| 1968 | 115.9 mm (4.6 in) |
| 1969 | 90.7 mm (3.6 in) |
| 1970 | 95.9 mm (3.8 in) |
| 1971 | 107.7 mm (4.2 in) |
| 1972 | 104.4 mm (4.1 in) |
| 1973 | 112.3 mm (4.4 in) |
| 1974 | 122.5 mm (4.8 in) |
| 1975 | 107.0 mm (4.2 in) |
| 1976 | 76.4 mm (3.0 in) |
| 1977 | 115.6 mm (4.6 in) |
| 1978 | 89.1 mm (3.5 in) |
| 1979 | 115.0 mm (4.5 in) |
| 1980 | 84.6 mm (3.3 in) |
| 1981 | 97.0 mm (3.8 in) |
| 1982 | 118.6 mm (4.7 in) |
| 1983 | 93.6 mm (3.7 in) |
| 1984 | 88.3 mm (3.5 in) |
| 1985 | 143.6 mm (5.7 in) |
| 1986 | 123.7 mm (4.9 in) |
| 1987 | 121.2 mm (4.8 in) |
| 1988 | 173.6 mm (6.8 in) |
| 1989 | 87.2 mm (3.4 in) |
| 1990 | 35.4 mm (1.4 in) |
| 1991 | 100.6 mm (4.0 in) |
| 1992 | 114.6 mm (4.5 in) |
| 1993 | 122.2 mm (4.8 in) |
| 1994 | 100.3 mm (3.9 in) |
| 1995 | 73.7 mm (2.9 in) |
| 1996 | 132.7 mm (5.2 in) |
| 1997 | 143.6 mm (5.7 in) |
| 1998 | 119.4 mm (4.7 in) |
| 1999 | 114.4 mm (4.5 in) |
| 2000 | 120.4 mm (4.7 in) |
| 2001 | 113.1 mm (4.5 in) |
| 2002 | 224.5 mm (8.8 in) |
| 2003 | 148.4 mm (5.8 in) |
| 2004 | 233.7 mm (9.2 in) |
| 2005 | 88.5 mm (3.5 in) |
| 2006 | 97.8 mm (3.9 in) |
| 2007 | 144.5 mm (5.7 in) |
| 2008 | 123.1 mm (4.8 in) |
| 2009 | 166.4 mm (6.6 in) |
| 2010 | 146.4 mm (5.8 in) |
| 2011 | 81.9 mm (3.2 in) |
| 2012 | 133.9 mm (5.3 in) |
| 2013 | 105.1 mm (4.1 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1924 | 52 days |
| 1925 | 61 days |
| 1926 | 61 days |
| 1927 | 91 days |
| 1928 | 72 days |
| 1929 | 48 days |
| 1930 | 56 days |
| 1931 | 55 days |
| 1932 | 30 days |
| 1933 | 41 days |
| 1934 | 73 days |
| 1935 | 30 days |
| 1936 | 90 days |
| 1937 | 110 days |
| 1938 | 30 days |
| 1939 | 89 days |
| 1940 | 32 days |
| 1941 | 60 days |
| 1942 | 117 days |
| 1943 | 30 days |
| 1944 | 55 days |
| 1945 | 113 days |
| 1946 | 30 days |
| 1947 | 60 days |
| 1948 | 59 days |
| 1949 | 85 days |
| 1950 | 89 days |
| 1951 | 75 days |
| 1952 | 59 days |
| 1953 | 30 days |
| 1954 | 30 days |
| 1955 | 30 days |
| 1956 | 40 days |
| 1957 | 30 days |
| 1958 | 73 days |
| 1959 | 30 days |
| 1960 | 151 days |
| 1961 | 30 days |
| 1962 | 60 days |
| 1963 | 58 days |
| 1964 | 60 days |
| 1965 | 59 days |
| 1966 | 34 days |
| 1967 | 43 days |
| 1968 | 30 days |
| 1969 | 131 days |
| 1970 | 70 days |
| 1971 | 132 days |
| 1972 | 56 days |
| 1973 | 37 days |
| 1974 | 58 days |
| 1975 | 63 days |
| 1976 | 151 days |
| 1977 | 89 days |
| 1978 | 89 days |
| 1979 | 64 days |
| 1980 | 95 days |
| 1981 | 95 days |
| 1982 | 90 days |
| 1983 | 73 days |
| 1984 | 30 days |
| 1985 | 30 days |
| 1986 | 126 days |
| 1987 | 80 days |
| 1988 | 162 days |
| 1989 | 165 days |
| 1990 | 24 days |
| 1991 | 165 days |
| 1992 | 85 days |
| 1993 | 101 days |
| 1994 | 100 days |
| 1995 | 162 days |
| 1996 | 152 days |
| 1997 | 47 days |
| 1998 | 113 days |
| 1999 | 165 days |
| 2000 | 88 days |
| 2001 | 157 days |
| 2002 | 112 days |
| 2003 | 126 days |
| 2004 | 82 days |
| 2005 | 117 days |
| 2006 | 138 days |
| 2007 | 125 days |
| 2008 | 161 days |
| 2009 | 129 days |
| 2010 | 108 days |
| 2011 | 151 days |
| 2012 | 97 days |
| 2013 | 40 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.
Rainfall Return Levels
76 years, 1927 to 2011A day with at least 55.9 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 126.3 mm (5.0 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 55.9 mm (2.2 in) | |
| 5 years | 71.5 mm (2.8 in) | |
| 10 years | 83.0 mm (3.3 in) | |
| 25 years | 99.0 mm (3.9 in) | |
| 50 years | 112.2 mm (4.4 in) | |
| 100 years | 126.3 mm (5.0 in) | Longer than the 76 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, 76 years of values from 1927 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: 158.0 mm (6.2 in) in 2002; 125.5 mm (4.9 in) in 1955; 89.9 mm (3.5 in) in 1991.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Ahuacatlan, at 1965. Each is measured against neighbouring stations.
- Relative to 4 neighbouring stations, the station's annual mean temperature from 1965 ran 0.6 C (1.1 F) higher than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1965 | +0.6 | +1.1 | possible | 4 |
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
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).