Tlaltenango Sanchez Roman Weather Records (MXN00032057)
Record envelope, standing records and threshold days for Tlaltenango Sanchez Roman (MXN00032057), Mexico, with 52 years of record.
Key Facts for Tlaltenango Sanchez Roman
- Tlaltenango Sanchez Roman (MXN00032057) is a weather station in Mexico at 21.77 latitude and -103.30 longitude, 1,685 m (5,528 ft) above sea level.
- The station reports from 1961 to 2012, 52 years of record.
- 1,464 records set at Tlaltenango Sanchez Roman still stand.
- Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
- Tlaltenango Sanchez Roman set a daily record precipitation of 13.2 mm (0.5 in) on 31 December 2012.
About the Station
- Location: Mexico, 21.77 latitude, -103.30 longitude.
- Elevation: 1,685 m (5,528 ft).
- Period of record: 1961 to 2012, 52 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 | 32.8 C (91.0 F) | -8.9 C (16.0 F) | n/a | n/a |
| Feb | 36.7 C (98.1 F) | -6.1 C (21.0 F) | n/a | n/a |
| Mar | 42.8 C (109.0 F) | -5.0 C (23.0 F) | n/a | n/a |
| Apr | 43.9 C (111.0 F) | -1.1 C (30.0 F) | n/a | n/a |
| May | 42.8 C (109.0 F) | 2.8 C (37.0 F) | n/a | n/a |
| Jun | 42.8 C (109.0 F) | 5.0 C (41.0 F) | n/a | n/a |
| Jul | 40.6 C (105.1 F) | 5.0 C (41.0 F) | n/a | n/a |
| Aug | 35.0 C (95.0 F) | 8.3 C (46.9 F) | n/a | n/a |
| Sep | 37.8 C (100.0 F) | 1.7 C (35.1 F) | n/a | n/a |
| Oct | 40.0 C (104.0 F) | -1.7 C (28.9 F) | n/a | n/a |
| Nov | 40.0 C (104.0 F) | -9.4 C (15.1 F) | n/a | n/a |
| Dec | 30.6 C (87.1 F) | -6.7 C (19.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1961 | 23 |
| 1962 | 219 |
| 1963 | 123 |
| 1964 | 60 |
| 1965 | 12 |
| 1966 | 16 |
| 1967 | 33 |
| 1968 | 18 |
| 1969 | 16 |
| 1970 | 19 |
| 1971 | 27 |
| 1972 | 32 |
| 1973 | 16 |
| 1974 | 7 |
| 1975 | 11 |
| 1976 | 20 |
| 1977 | 8 |
| 1978 | 11 |
| 1979 | 17 |
| 1980 | 17 |
| 1981 | 6 |
| 1982 | 16 |
| 1983 | 14 |
| 1984 | 50 |
| 1985 | 37 |
| 1986 | 9 |
| 1987 | 46 |
| 1988 | 96 |
| 1989 | 29 |
| 1990 | 18 |
| 1991 | 19 |
| 1992 | 25 |
| 1993 | 14 |
| 1994 | 9 |
| 1995 | 24 |
| 1996 | 87 |
| 1997 | 25 |
| 1998 | 27 |
| 1999 | 22 |
| 2000 | 28 |
| 2001 | 10 |
| 2002 | 16 |
| 2003 | 19 |
| 2004 | 10 |
| 2006 | 16 |
| 2007 | 9 |
| 2009 | 16 |
| 2010 | 31 |
| 2011 | 19 |
| 2012 | 12 |
All-Time Record Progression
3 new records| Date | Kind | Detail |
|---|---|---|
| 1996-05-30 | Record high minimum temperature | Record high minimum temperature 22.8 C (73.0 F) |
| 2006-01-18 | Record low minimum temperature | Record low minimum temperature -8.9 C (16.0 F) |
| 2011-11-29 | Record low minimum temperature | Record low minimum temperature -9.4 C (15.1 F) |
Wettest Day of Each Month
Jun: 108.0 mm (4.3 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 41.9 mm (1.6 in) | 17 January 1992 |
| Feb | 52.3 mm (2.1 in) | 2 February 2010 |
| Mar | 49.8 mm (2.0 in) | 5 March 1968 |
| Apr | 64.8 mm (2.6 in) | 16 April 1981 |
| May | 47.0 mm (1.9 in) | 12 May 2009 |
| Jun | 108.0 mm (4.3 in) | 19 June 1971 |
| Jul | 94.0 mm (3.7 in) | 22 July 1995 |
| Aug | 80.8 mm (3.2 in) | 22 August 1989 |
| Sep | 77.5 mm (3.1 in) | 27 September 1978 |
| Oct | 75.9 mm (3.0 in) | 20 October 1962 |
| Nov | 37.8 mm (1.5 in) | 18 November 1989 |
| Dec | 55.9 mm (2.2 in) | 2 December 1979 |
Period of Record Coverage
1961 to 2012| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1961 | 99 | 27% | No |
| 1962 | 365 | 100% | Yes |
| 1963 | 364 | 100% | Yes |
| 1964 | 205 | 56% | No |
| 1965 | 215 | 59% | No |
| 1966 | 364 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 237 | 65% | No |
| 1969 | 364 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 364 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 335 | 92% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 365 | 100% | Yes |
| 1983 | 345 | 95% | Yes |
| 1984 | 363 | 99% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 273 | 75% | No |
| 1987 | 351 | 96% | Yes |
| 1988 | 322 | 88% | No |
| 1989 | 360 | 99% | Yes |
| 1990 | 362 | 99% | Yes |
| 1991 | 336 | 92% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 364 | 100% | Yes |
| 1994 | 364 | 100% | Yes |
| 1995 | 334 | 92% | Yes |
| 1996 | 365 | 100% | Yes |
| 1997 | 333 | 91% | Yes |
| 1998 | 365 | 100% | Yes |
| 1999 | 364 | 100% | Yes |
| 2000 | 365 | 100% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 365 | 100% | Yes |
| 2003 | 365 | 100% | Yes |
| 2004 | 91 | 25% | No |
| 2006 | 365 | 100% | Yes |
| 2007 | 364 | 100% | Yes |
| 2009 | 364 | 100% | Yes |
| 2010 | 364 | 100% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 335 | 92% | Yes |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 31 December 2012 | Tlaltenango Sanchez Roman, MX | daily rain | 13.2 mm (0.5 in) | 8.4 mm (0.33 in) | 25 years | 20 of 100 (Routine) |
| 24 December 2012 | Tlaltenango Sanchez Roman, MX | daily high max | 28.3 C (82.9 F) | 0.5 C (0.9 F) | 47 years | 20 of 100 (Routine) |
| 13 November 2012 | Tlaltenango Sanchez Roman, MX | daily low min (Tie) | 0.0 C (32.0 F) | tie | 31 years | 3 of 100 (Routine) |
| 4 November 2012 | Tlaltenango Sanchez Roman, MX | daily high min | 12.2 C (54.0 F) | 0.5 C (0.9 F) | 29 years | 14 of 100 (Routine) |
| 21 October 2012 | Tlaltenango Sanchez Roman, MX | daily high max | 32.8 C (91.0 F) | 1.1 C (2.0 F) | 49 years | 22 of 100 (Routine) |
| 19 September 2012 | Tlaltenango Sanchez Roman, MX | daily low min | 7.8 C (46.0 F) | 1.1 C (2.0 F) | 35 years | 19 of 100 (Routine) |
| 18 September 2012 | Tlaltenango Sanchez Roman, MX | daily low min | 6.7 C (44.1 F) | 2.2 C (4.0 F) | 35 years | 24 of 100 (Routine) |
| 15 September 2012 | Tlaltenango Sanchez Roman, MX | daily rain | 26.2 mm (1.0 in) | 8.4 mm (0.33 in) | 38 years | 23 of 100 (Routine) |
| 14 August 2012 | Tlaltenango Sanchez Roman, MX | daily low max | 22.2 C (72.0 F) | 0.6 C (1.1 F) | 41 years | 19 of 100 (Routine) |
| 12 June 2012 | Tlaltenango Sanchez Roman, MX | daily high max | 36.7 C (98.1 F) | 1.1 C (2.0 F) | 1 year | 7 of 100 (Routine) |
| 11 May 2012 | Tlaltenango Sanchez Roman, MX | daily low min | 3.9 C (39.0 F) | 0.5 C (0.9 F) | 13 years | 9 of 100 (Routine) |
| 5 May 2012 | Tlaltenango Sanchez Roman, MX | daily rain | 0.8 mm (0.03 in) | 0.8 mm (0.03 in) | 50 years | 20 of 100 (Routine) |
| 4 May 2012 | Tlaltenango Sanchez Roman, MX | daily rain | 16.3 mm (0.6 in) | 16.3 mm (0.6 in) | 50 years | 20 of 100 (Routine) |
| 15 March 2012 | Tlaltenango Sanchez Roman, MX | daily high max | 32.8 C (91.0 F) | 1.1 C (2.0 F) | 49 years | 21 of 100 (Routine) |
| 29 February 2012 | Tlaltenango Sanchez Roman, MX | daily high max (Tie) | 30.0 C (86.0 F) | tie | 40 years | 4 of 100 (Routine) |
| 15 February 2012 | Tlaltenango Sanchez Roman, MX | daily rain | 13.5 mm (0.5 in) | 6.6 mm (0.26 in) | 21 years | 17 of 100 (Routine) |
| 11 February 2012 | Tlaltenango Sanchez Roman, MX | daily rain | 13.5 mm (0.5 in) | 9.7 mm (0.38 in) | 9 years | 17 of 100 (Routine) |
| 8 February 2012 | Tlaltenango Sanchez Roman, MX | daily rain | 1.3 mm (0.05 in) | 1.3 mm (0.05 in) | 50 years | 20 of 100 (Routine) |
| 30 January 2012 | Tlaltenango Sanchez Roman, MX | daily low max | 13.9 C (57.0 F) | 3.9 C (7.0 F) | 18 years | 20 of 100 (Routine) |
| 23 January 2012 | Tlaltenango Sanchez Roman, MX | daily high max (Tie) | 28.9 C (84.0 F) | tie | 29 years | 3 of 100 (Routine) |
Climate Trend
38 complete years, 1962 to 2011| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1962 | 21.5 C | +3.48 C |
| 1963 | 20.8 C | +2.82 C |
| 1966 | 17.9 C | -0.08 C |
| 1967 | 17.5 C | -0.49 C |
| 1969 | 17.3 C | -0.67 C |
| 1970 | 17.7 C | -0.25 C |
| 1971 | 18.1 C | +0.10 C |
| 1972 | 19.2 C | +1.25 C |
| 1974 | 18.0 C | +0.02 C |
| 1975 | 18.2 C | +0.25 C |
| 1976 | 17.4 C | -0.56 C |
| 1977 | 17.7 C | -0.27 C |
| 1978 | 17.5 C | -0.51 C |
| 1979 | 18.2 C | +0.18 C |
| 1980 | 18.1 C | +0.06 C |
| 1981 | 17.8 C | -0.16 C |
| 1982 | 18.6 C | +0.61 C |
| 1983 | 17.2 C | -0.75 C |
| 1984 | 15.6 C | -2.35 C |
| 1985 | 16.5 C | -1.48 C |
| 1987 | 16.3 C | -1.65 C |
| 1989 | 17.1 C | -0.88 C |
| 1990 | 17.8 C | -0.15 C |
| 1992 | 17.7 C | -0.29 C |
| 1993 | 17.9 C | -0.05 C |
| 1994 | 18.1 C | +0.11 C |
| 1996 | 19.1 C | +1.11 C |
| 1998 | 18.1 C | +0.13 C |
| 1999 | 18.6 C | +0.56 C |
| 2000 | 18.6 C | +0.63 C |
| 2001 | 18.2 C | +0.17 C |
| 2002 | 18.4 C | +0.39 C |
| 2003 | 18.3 C | +0.32 C |
| 2006 | 18.1 C | +0.06 C |
| 2007 | 17.4 C | -0.56 C |
| 2009 | 17.8 C | -0.18 C |
| 2010 | 16.9 C | -1.10 C |
| 2011 | 18.2 C | +0.16 C |
The fitted trend in annual mean temperature here over 1962 to 2011 is -0.2 C (-0.4 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.3 F (-0.7 to 0.1) per decade. The slope is a straight line fitted to 38 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.2 C (-0.4 to 0.1) per decade | -0.3 F (-0.7 to 0.1) per decade | 1962 to 2011 | 38 | Not clearly different from zero |
| Mean daily maximum | 0.1 C (-0.3 to 0.5) per decade | 0.2 F (-0.5 to 0.9) per decade | 1962 to 2011 | 38 | Not clearly different from zero |
| Mean daily minimum | -0.5 C (-0.7 to -0.2) per decade | -0.8 F (-1.2 to -0.4) per decade | 1962 to 2011 | 38 | Fall |
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
1961 to 2012| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 43.9 C (111.0 F) | 1963 | 35.6 C (96.1 F) | 50 |
| Coldest night (TNn) | -9.4 C (15.1 F) | 2011 | -3.3 C (26.1 F) | 50 |
| Wettest day (Rx1day) | 108.0 mm (4.3 in) | 1971 | 48.7 mm (1.9 in) | 50 |
| Wettest five days (Rx5day) | 257.3 mm (10.1 in) | 1963 | 98.2 mm (3.9 in) | 50 |
| Longest dry spell (CDD) | 178 days | 1989 | 83 days | 50 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1961 | 30.6 C (87.1 F) |
| 1962 | 40.0 C (104.0 F) |
| 1963 | 43.9 C (111.0 F) |
| 1964 | 40.6 C (105.1 F) |
| 1965 | 35.6 C (96.1 F) |
| 1966 | 35.0 C (95.0 F) |
| 1967 | 36.7 C (98.1 F) |
| 1968 | 30.6 C (87.1 F) |
| 1969 | 35.0 C (95.0 F) |
| 1970 | 36.7 C (98.1 F) |
| 1971 | 36.7 C (98.1 F) |
| 1972 | 35.6 C (96.1 F) |
| 1973 | 40.0 C (104.0 F) |
| 1974 | 35.6 C (96.1 F) |
| 1975 | 35.6 C (96.1 F) |
| 1976 | 35.0 C (95.0 F) |
| 1977 | 33.9 C (93.0 F) |
| 1978 | 35.6 C (96.1 F) |
| 1979 | 35.6 C (96.1 F) |
| 1980 | 38.9 C (102.0 F) |
| 1981 | 35.0 C (95.0 F) |
| 1982 | 38.9 C (102.0 F) |
| 1983 | 35.6 C (96.1 F) |
| 1984 | 33.3 C (91.9 F) |
| 1985 | 35.6 C (96.1 F) |
| 1986 | 34.4 C (93.9 F) |
| 1987 | 31.7 C (89.1 F) |
| 1988 | 31.7 C (89.1 F) |
| 1989 | 35.0 C (95.0 F) |
| 1990 | 38.9 C (102.0 F) |
| 1991 | 35.6 C (96.1 F) |
| 1992 | 35.6 C (96.1 F) |
| 1993 | 36.7 C (98.1 F) |
| 1994 | 35.6 C (96.1 F) |
| 1995 | 37.8 C (100.0 F) |
| 1996 | 33.9 C (93.0 F) |
| 1997 | 35.6 C (96.1 F) |
| 1998 | 36.7 C (98.1 F) |
| 1999 | 40.6 C (105.1 F) |
| 2000 | 40.0 C (104.0 F) |
| 2001 | 37.8 C (100.0 F) |
| 2002 | 37.8 C (100.0 F) |
| 2003 | 39.4 C (102.9 F) |
| 2004 | 35.0 C (95.0 F) |
| 2006 | 36.1 C (97.0 F) |
| 2007 | 35.6 C (96.1 F) |
| 2009 | 37.8 C (100.0 F) |
| 2010 | 36.7 C (98.1 F) |
| 2011 | 39.4 C (102.9 F) |
| 2012 | 37.8 C (100.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1961 | 1.7 C (35.1 F) |
| 1962 | 0.0 C (32.0 F) |
| 1963 | -2.2 C (28.0 F) |
| 1964 | 0.0 C (32.0 F) |
| 1965 | 0.6 C (33.1 F) |
| 1966 | -3.3 C (26.1 F) |
| 1967 | -6.1 C (21.0 F) |
| 1968 | -3.3 C (26.1 F) |
| 1969 | 0.0 C (32.0 F) |
| 1970 | 0.6 C (33.1 F) |
| 1971 | -3.3 C (26.1 F) |
| 1972 | 0.0 C (32.0 F) |
| 1973 | -4.4 C (24.1 F) |
| 1974 | -3.3 C (26.1 F) |
| 1975 | -4.4 C (24.1 F) |
| 1976 | -2.2 C (28.0 F) |
| 1977 | 0.6 C (33.1 F) |
| 1978 | 0.0 C (32.0 F) |
| 1979 | -4.4 C (24.1 F) |
| 1980 | -1.1 C (30.0 F) |
| 1981 | -2.2 C (28.0 F) |
| 1982 | -2.2 C (28.0 F) |
| 1983 | -3.3 C (26.1 F) |
| 1984 | 0.0 C (32.0 F) |
| 1985 | -6.7 C (19.9 F) |
| 1986 | -2.2 C (28.0 F) |
| 1987 | -2.2 C (28.0 F) |
| 1988 | 0.0 C (32.0 F) |
| 1989 | -4.4 C (24.1 F) |
| 1990 | -2.2 C (28.0 F) |
| 1991 | -2.2 C (28.0 F) |
| 1992 | -3.3 C (26.1 F) |
| 1993 | -5.0 C (23.0 F) |
| 1994 | -4.4 C (24.1 F) |
| 1995 | -5.0 C (23.0 F) |
| 1996 | -0.6 C (30.9 F) |
| 1997 | -4.4 C (24.1 F) |
| 1998 | -6.1 C (21.0 F) |
| 1999 | -5.0 C (23.0 F) |
| 2000 | -4.4 C (24.1 F) |
| 2001 | -5.0 C (23.0 F) |
| 2002 | -4.4 C (24.1 F) |
| 2003 | -6.1 C (21.0 F) |
| 2004 | -5.0 C (23.0 F) |
| 2006 | -8.9 C (16.0 F) |
| 2007 | -4.4 C (24.1 F) |
| 2009 | -3.3 C (26.1 F) |
| 2010 | -6.1 C (21.0 F) |
| 2011 | -9.4 C (15.1 F) |
| 2012 | -3.9 C (25.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1961 | 0.8 mm (0.03 in) |
| 1962 | 75.9 mm (3.0 in) |
| 1963 | 79.8 mm (3.1 in) |
| 1964 | 32.8 mm (1.3 in) |
| 1965 | 42.9 mm (1.7 in) |
| 1966 | 65.8 mm (2.6 in) |
| 1967 | 49.8 mm (2.0 in) |
| 1968 | 49.8 mm (2.0 in) |
| 1969 | 72.9 mm (2.9 in) |
| 1970 | 43.9 mm (1.7 in) |
| 1971 | 108.0 mm (4.3 in) |
| 1972 | 63.0 mm (2.5 in) |
| 1973 | 34.8 mm (1.4 in) |
| 1974 | 56.9 mm (2.2 in) |
| 1975 | 45.0 mm (1.8 in) |
| 1976 | 39.9 mm (1.6 in) |
| 1977 | 39.9 mm (1.6 in) |
| 1978 | 77.5 mm (3.1 in) |
| 1979 | 55.9 mm (2.2 in) |
| 1980 | 32.8 mm (1.3 in) |
| 1981 | 64.8 mm (2.6 in) |
| 1982 | 35.8 mm (1.4 in) |
| 1983 | 36.8 mm (1.4 in) |
| 1984 | 61.2 mm (2.4 in) |
| 1985 | 34.8 mm (1.4 in) |
| 1986 | 38.9 mm (1.5 in) |
| 1987 | 58.9 mm (2.3 in) |
| 1988 | 46.0 mm (1.8 in) |
| 1989 | 80.8 mm (3.2 in) |
| 1990 | 55.6 mm (2.2 in) |
| 1991 | 63.8 mm (2.5 in) |
| 1992 | 49.8 mm (2.0 in) |
| 1993 | 39.6 mm (1.6 in) |
| 1994 | 54.9 mm (2.2 in) |
| 1995 | 94.0 mm (3.7 in) |
| 1996 | 42.2 mm (1.7 in) |
| 1997 | 49.8 mm (2.0 in) |
| 1998 | 32.3 mm (1.3 in) |
| 1999 | 47.5 mm (1.9 in) |
| 2000 | 39.4 mm (1.6 in) |
| 2001 | 42.2 mm (1.7 in) |
| 2002 | 41.4 mm (1.6 in) |
| 2003 | 56.1 mm (2.2 in) |
| 2004 | 11.7 mm (0.5 in) |
| 2006 | 61.0 mm (2.4 in) |
| 2007 | 91.9 mm (3.6 in) |
| 2009 | 47.0 mm (1.9 in) |
| 2010 | 63.8 mm (2.5 in) |
| 2011 | 38.4 mm (1.5 in) |
| 2012 | 39.1 mm (1.5 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1961 | 0.8 mm (0.03 in) |
| 1962 | 120.4 mm (4.7 in) |
| 1963 | 257.3 mm (10.1 in) |
| 1964 | 75.3 mm (3.0 in) |
| 1965 | 88.1 mm (3.5 in) |
| 1966 | 140.2 mm (5.5 in) |
| 1967 | 105.5 mm (4.2 in) |
| 1968 | 97.6 mm (3.8 in) |
| 1969 | 118.1 mm (4.6 in) |
| 1970 | 150.1 mm (5.9 in) |
| 1971 | 254.1 mm (10.0 in) |
| 1972 | 103.9 mm (4.1 in) |
| 1973 | 97.3 mm (3.8 in) |
| 1974 | 117.4 mm (4.6 in) |
| 1975 | 98.7 mm (3.9 in) |
| 1976 | 96.1 mm (3.8 in) |
| 1977 | 106.0 mm (4.2 in) |
| 1978 | 106.9 mm (4.2 in) |
| 1979 | 106.1 mm (4.2 in) |
| 1980 | 78.3 mm (3.1 in) |
| 1981 | 105.5 mm (4.2 in) |
| 1982 | 92.0 mm (3.6 in) |
| 1983 | 85.1 mm (3.4 in) |
| 1984 | 89.7 mm (3.5 in) |
| 1985 | 90.4 mm (3.6 in) |
| 1986 | 83.8 mm (3.3 in) |
| 1987 | 120.2 mm (4.7 in) |
| 1988 | 133.3 mm (5.2 in) |
| 1989 | 129.3 mm (5.1 in) |
| 1990 | 130.3 mm (5.1 in) |
| 1991 | 154.0 mm (6.1 in) |
| 1992 | 100.8 mm (4.0 in) |
| 1993 | 99.1 mm (3.9 in) |
| 1994 | 58.5 mm (2.3 in) |
| 1995 | 165.4 mm (6.5 in) |
| 1996 | 81.8 mm (3.2 in) |
| 1997 | 86.4 mm (3.4 in) |
| 1998 | 62.5 mm (2.5 in) |
| 1999 | 72.2 mm (2.8 in) |
| 2000 | 68.7 mm (2.7 in) |
| 2001 | 100.3 mm (3.9 in) |
| 2002 | 76.2 mm (3.0 in) |
| 2003 | 86.2 mm (3.4 in) |
| 2004 | 24.6 mm (1.0 in) |
| 2006 | 90.8 mm (3.6 in) |
| 2007 | 109.7 mm (4.3 in) |
| 2009 | 76.5 mm (3.0 in) |
| 2010 | 90.9 mm (3.6 in) |
| 2011 | 56.5 mm (2.2 in) |
| 2012 | 100.4 mm (4.0 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1961 | 73 days |
| 1962 | 100 days |
| 1963 | 83 days |
| 1964 | 114 days |
| 1965 | 69 days |
| 1966 | 74 days |
| 1967 | 50 days |
| 1968 | 28 days |
| 1969 | 127 days |
| 1970 | 103 days |
| 1971 | 132 days |
| 1972 | 118 days |
| 1973 | 65 days |
| 1974 | 123 days |
| 1975 | 119 days |
| 1976 | 154 days |
| 1977 | 86 days |
| 1978 | 76 days |
| 1979 | 78 days |
| 1980 | 67 days |
| 1981 | 43 days |
| 1982 | 107 days |
| 1983 | 71 days |
| 1984 | 88 days |
| 1985 | 82 days |
| 1986 | 109 days |
| 1987 | 97 days |
| 1988 | 65 days |
| 1989 | 178 days |
| 1990 | 77 days |
| 1991 | 100 days |
| 1992 | 45 days |
| 1993 | 102 days |
| 1994 | 105 days |
| 1995 | 72 days |
| 1996 | 72 days |
| 1997 | 33 days |
| 1998 | 111 days |
| 1999 | 84 days |
| 2000 | 82 days |
| 2001 | 60 days |
| 2002 | 71 days |
| 2003 | 78 days |
| 2004 | 31 days |
| 2006 | 112 days |
| 2007 | 109 days |
| 2009 | 112 days |
| 2010 | 80 days |
| 2011 | 122 days |
| 2012 | 64 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
27 years with a frostAcross 27 years with a frost, the median last spring frost at Tlaltenango Sanchez Roman falls on 9 March and the median first autumn frost on 19 November, which leaves a median of 249 days between them.
Fitted over all years, the growing season changes by -8.7 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1966 to 2011) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 9 March | n/a | 9 March | n/a | +3.3 days per decade |
| First autumn frost | 19 November | n/a | 19 November | n/a | -5.4 days per decade |
| Growing days | 249 days | n/a | 249 days | n/a | -8.7 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
44 years, 1962 to 2012A day with at least 50.9 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 119.9 mm (4.7 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 50.9 mm (2.0 in) | |
| 5 years | 66.9 mm (2.6 in) | |
| 10 years | 78.5 mm (3.1 in) | |
| 25 years | 94.2 mm (3.7 in) | |
| 50 years | 106.7 mm (4.2 in) | Longer than the 44 years of record |
| 100 years | 119.9 mm (4.7 in) | Longer than the 44 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, 44 years of values from 1962 to 2012.
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: 108.0 mm (4.3 in) in 1971; 94.0 mm (3.7 in) in 1995; 91.9 mm (3.6 in) in 2007.
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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).