Santiago Tlazala Weather Records (MXN00015114)
Record envelope, standing records and threshold days for Santiago Tlazala (MXN00015114), Mexico, with 52 years of record.
Key Facts for Santiago Tlazala
- Santiago Tlazala (MXN00015114) is a weather station in Mexico at 19.55 latitude and -99.40 longitude, 2,796 m (9,173 ft) above sea level.
- The station reports from 1961 to 2012, 52 years of record.
- 1,464 records set at Santiago Tlazala still stand.
- Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
- Santiago Tlazala tied a daily record high minimum temperature of 10.0 C (50.0 F) on 11 December 2012.
About the Station
- Location: Mexico, 19.55 latitude, -99.40 longitude.
- Elevation: 2,796 m (9,173 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 | 28.9 C (84.0 F) | -8.3 C (17.1 F) | n/a | n/a |
| Feb | 30.6 C (87.1 F) | -7.2 C (19.0 F) | n/a | n/a |
| Mar | 32.2 C (90.0 F) | -6.7 C (19.9 F) | n/a | n/a |
| Apr | 32.2 C (90.0 F) | -4.4 C (24.1 F) | n/a | n/a |
| May | 32.2 C (90.0 F) | 0.6 C (33.1 F) | n/a | n/a |
| Jun | 28.9 C (84.0 F) | 0.0 C (32.0 F) | n/a | n/a |
| Jul | 27.8 C (82.0 F) | 1.1 C (34.0 F) | n/a | n/a |
| Aug | 27.8 C (82.0 F) | -2.2 C (28.0 F) | n/a | n/a |
| Sep | 28.3 C (82.9 F) | -3.3 C (26.1 F) | n/a | n/a |
| Oct | 29.4 C (84.9 F) | -4.4 C (24.1 F) | n/a | n/a |
| Nov | 34.4 C (93.9 F) | -6.1 C (21.0 F) | n/a | n/a |
| Dec | 28.9 C (84.0 F) | -6.1 C (21.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1965 | 28 |
| 1966 | 89 |
| 1967 | 83 |
| 1968 | 52 |
| 1969 | 21 |
| 1970 | 12 |
| 1971 | 44 |
| 1972 | 22 |
| 1973 | 10 |
| 1974 | 34 |
| 1975 | 26 |
| 1976 | 30 |
| 1977 | 20 |
| 1978 | 35 |
| 1979 | 28 |
| 1980 | 22 |
| 1981 | 21 |
| 1982 | 22 |
| 1983 | 32 |
| 1984 | 23 |
| 1985 | 15 |
| 1986 | 28 |
| 1987 | 22 |
| 1988 | 14 |
| 1989 | 1 |
| 1996 | 4 |
| 1997 | 99 |
| 1998 | 111 |
| 1999 | 95 |
| 2000 | 16 |
| 2001 | 18 |
| 2002 | 5 |
| 2003 | 58 |
| 2004 | 2 |
| 2005 | 42 |
| 2006 | 80 |
| 2007 | 35 |
| 2008 | 22 |
| 2009 | 39 |
| 2010 | 31 |
| 2011 | 50 |
| 2012 | 23 |
All-Time Record Progression
2 new records| Date | Kind | Detail |
|---|---|---|
| 2006-05-07 | Record high minimum temperature | Record high minimum temperature 13.9 C (57.0 F) |
| 2006-05-08 | Record high minimum temperature | Record high minimum temperature 15.0 C (59.0 F) |
Wettest Day of Each Month
Jul: 98.3 mm (3.9 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 39.9 mm (1.6 in) | 25 January 1980 |
| Feb | 95.0 mm (3.7 in) | 3 February 2010 |
| Mar | 62.0 mm (2.4 in) | 4 March 1988 |
| Apr | 74.9 mm (2.9 in) | 8 April 1988 |
| May | 52.8 mm (2.1 in) | 29 May 1986 |
| Jun | 89.9 mm (3.5 in) | 19 June 1965 |
| Jul | 98.3 mm (3.9 in) | 2 July 1966 |
| Aug | 68.3 mm (2.7 in) | 23 August 2006 |
| Sep | 97.8 mm (3.9 in) | 4 September 1988 |
| Oct | 68.8 mm (2.7 in) | 7 October 1976 |
| Nov | 49.8 mm (2.0 in) | 5 November 2006 |
| Dec | 26.9 mm (1.1 in) | 20 December 1976 |
Period of Record Coverage
1965 to 2012| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1965 | 323 | 88% | No |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 305 | 83% | No |
| 1969 | 356 | 98% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 363 | 99% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 334 | 92% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 364 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 365 | 100% | Yes |
| 1988 | 365 | 100% | Yes |
| 1989 | 59 | 16% | No |
| 1996 | 61 | 17% | No |
| 1997 | 365 | 100% | Yes |
| 1998 | 364 | 100% | Yes |
| 1999 | 365 | 100% | Yes |
| 2000 | 152 | 42% | No |
| 2001 | 274 | 75% | No |
| 2002 | 334 | 92% | Yes |
| 2003 | 365 | 100% | Yes |
| 2004 | 144 | 39% | No |
| 2005 | 365 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 366 | 100% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 212 | 58% | No |
| 2011 | 365 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 11 December 2012 | Santiago Tlazala, MX | daily high min (Tie) | 10.0 C (50.0 F) | tie | 7 years | 1 of 100 (Routine) |
| 13 November 2012 | Santiago Tlazala, MX | daily high min (Tie) | 8.9 C (48.0 F) | tie | 6 years | 1 of 100 (Routine) |
| 4 November 2012 | Santiago Tlazala, MX | daily low max | 11.7 C (53.1 F) | 1.6 C (2.9 F) | 3 years | 9 of 100 (Routine) |
| 20 October 2012 | Santiago Tlazala, MX | daily high min (Tie) | 10.0 C (50.0 F) | tie | 6 years | 1 of 100 (Routine) |
| 18 October 2012 | Santiago Tlazala, MX | daily high min (Tie) | 10.6 C (51.1 F) | tie | 6 years | 1 of 100 (Routine) |
| 1 October 2012 | Santiago Tlazala, MX | daily high min (Tie) | 10.0 C (50.0 F) | tie | 15 years | 2 of 100 (Routine) |
| 30 September 2012 | Santiago Tlazala, MX | daily high min | 11.7 C (53.1 F) | 1.1 C (2.0 F) | 6 years | 10 of 100 (Routine) |
| 29 September 2012 | Santiago Tlazala, MX | daily high min (Tie) | 10.6 C (51.1 F) | tie | 5 years | 1 of 100 (Routine) |
| 18 September 2012 | Santiago Tlazala, MX | daily high min | 10.6 C (51.1 F) | 0.6 C (1.1 F) | 6 years | 7 of 100 (Routine) |
| 6 September 2012 | Santiago Tlazala, MX | daily high min | 10.6 C (51.1 F) | 0.6 C (1.1 F) | 5 years | 7 of 100 (Routine) |
| 31 August 2012 | Santiago Tlazala, MX | daily high min | 11.1 C (52.0 F) | 0.5 C (0.9 F) | 5 years | 7 of 100 (Routine) |
| 24 August 2012 | Santiago Tlazala, MX | daily high min | 11.1 C (52.0 F) | 0.5 C (0.9 F) | 6 years | 7 of 100 (Routine) |
| 23 August 2012 | Santiago Tlazala, MX | daily high min | 11.1 C (52.0 F) | 0.5 C (0.9 F) | 6 years | 7 of 100 (Routine) |
| 20 August 2012 | Santiago Tlazala, MX | daily rain | 35.3 mm (1.4 in) | 7.4 mm (0.29 in) | 36 years | 21 of 100 (Routine) |
| 19 August 2012 | Santiago Tlazala, MX | daily high min | 11.7 C (53.1 F) | 1.1 C (2.0 F) | 4 years | 10 of 100 (Routine) |
| 19 August 2012 | Santiago Tlazala, MX | daily low max (Tie) | 18.3 C (64.9 F) | tie | 41 years | 4 of 100 (Routine) |
| 12 August 2012 | Santiago Tlazala, MX | daily low max (Tie) | 15.0 C (59.0 F) | tie | 13 years | 1 of 100 (Routine) |
| 12 August 2012 | Santiago Tlazala, MX | daily high min (Tie) | 10.0 C (50.0 F) | tie | 1 year | 1 of 100 (Routine) |
| 10 August 2012 | Santiago Tlazala, MX | daily high min | 11.1 C (52.0 F) | 0.5 C (0.9 F) | 1 year | 6 of 100 (Routine) |
| 27 July 2012 | Santiago Tlazala, MX | daily high max (Tie) | 24.4 C (75.9 F) | tie | 13 years | 1 of 100 (Routine) |
Climate Trend
30 complete years, 1966 to 2012| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1966 | 11.0 C | -1.59 C |
| 1967 | 10.7 C | -1.85 C |
| 1969 | 12.2 C | -0.41 C |
| 1970 | 12.0 C | -0.54 C |
| 1971 | 11.5 C | -1.08 C |
| 1972 | 12.0 C | -0.54 C |
| 1973 | 12.5 C | -0.10 C |
| 1974 | 11.5 C | -1.12 C |
| 1975 | 11.4 C | -1.14 C |
| 1976 | 11.3 C | -1.30 C |
| 1977 | 11.7 C | -0.93 C |
| 1978 | 11.6 C | -1.02 C |
| 1979 | 11.7 C | -0.91 C |
| 1980 | 12.3 C | -0.32 C |
| 1981 | 12.4 C | -0.23 C |
| 1983 | 12.7 C | +0.13 C |
| 1984 | 12.4 C | -0.14 C |
| 1985 | 12.5 C | -0.13 C |
| 1986 | 12.3 C | -0.28 C |
| 1987 | 12.5 C | -0.12 C |
| 1988 | 13.1 C | +0.50 C |
| 1997 | 14.0 C | +1.43 C |
| 2003 | 13.6 C | +1.02 C |
| 2005 | 13.3 C | +0.67 C |
| 2006 | 14.4 C | +1.77 C |
| 2007 | 14.0 C | +1.46 C |
| 2008 | 14.0 C | +1.41 C |
| 2009 | 14.5 C | +1.93 C |
| 2011 | 14.6 C | +2.02 C |
| 2012 | 14.0 C | +1.42 C |
The annual mean temperature here has risen by 0.7 C (0.6 to 0.8) per decade over 1966 to 2012. In Fahrenheit: 1.2 F (1.1 to 1.4) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.7 C (0.6 to 0.8) per decade | 1.2 F (1.1 to 1.4) per decade | 1966 to 2012 | 30 | Rise |
| Mean daily maximum | 0.4 C (0.1 to 0.6) per decade | 0.7 F (0.3 to 1.1) per decade | 1966 to 2012 | 30 | Rise |
| Mean daily minimum | 1.0 C (0.8 to 1.2) per decade | 1.8 F (1.4 to 2.2) per decade | 1966 to 2012 | 30 | Rise |
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) | 34.4 C (93.9 F) | 1997 | 26.7 C (80.1 F) | 42 |
| Coldest night (TNn) | -8.3 C (17.1 F) | 1966 | -3.3 C (26.1 F) | 42 |
| Wettest day (Rx1day) | 98.3 mm (3.9 in) | 1966 | 55.7 mm (2.2 in) | 46 |
| Wettest five days (Rx5day) | 200.5 mm (7.9 in) | 1998 | 126.0 mm (5.0 in) | 46 |
| Longest dry spell (CDD) | 117 days | 1998 | 47 days | 46 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1961 | n/a |
| 1962 | n/a |
| 1963 | n/a |
| 1964 | n/a |
| 1965 | 27.8 C (82.0 F) |
| 1966 | 27.8 C (82.0 F) |
| 1967 | 30.0 C (86.0 F) |
| 1968 | 26.7 C (80.1 F) |
| 1969 | 25.6 C (78.1 F) |
| 1970 | 27.2 C (81.0 F) |
| 1971 | 26.7 C (80.1 F) |
| 1972 | 26.7 C (80.1 F) |
| 1973 | 29.4 C (84.9 F) |
| 1974 | 26.1 C (79.0 F) |
| 1975 | 25.6 C (78.1 F) |
| 1976 | 23.9 C (75.0 F) |
| 1977 | 25.6 C (78.1 F) |
| 1978 | 25.0 C (77.0 F) |
| 1979 | 25.0 C (77.0 F) |
| 1980 | 26.7 C (80.1 F) |
| 1981 | 25.0 C (77.0 F) |
| 1982 | 28.9 C (84.0 F) |
| 1983 | 30.0 C (86.0 F) |
| 1984 | 27.8 C (82.0 F) |
| 1985 | 25.0 C (77.0 F) |
| 1986 | 27.2 C (81.0 F) |
| 1987 | 26.7 C (80.1 F) |
| 1988 | 27.8 C (82.0 F) |
| 1989 | 25.0 C (77.0 F) |
| 1996 | 28.9 C (84.0 F) |
| 1997 | 34.4 C (93.9 F) |
| 1998 | 32.2 C (90.0 F) |
| 1999 | 29.4 C (84.9 F) |
| 2000 | 31.7 C (89.1 F) |
| 2001 | 30.0 C (86.0 F) |
| 2002 | 25.0 C (77.0 F) |
| 2003 | 26.7 C (80.1 F) |
| 2004 | 25.6 C (78.1 F) |
| 2005 | 24.4 C (75.9 F) |
| 2006 | 26.7 C (80.1 F) |
| 2007 | 27.2 C (81.0 F) |
| 2008 | 26.7 C (80.1 F) |
| 2009 | 26.1 C (79.0 F) |
| 2010 | 26.7 C (80.1 F) |
| 2011 | 26.7 C (80.1 F) |
| 2012 | 25.6 C (78.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1961 | n/a |
| 1962 | n/a |
| 1963 | n/a |
| 1964 | n/a |
| 1965 | -3.3 C (26.1 F) |
| 1966 | -8.3 C (17.1 F) |
| 1967 | -4.4 C (24.1 F) |
| 1968 | -7.2 C (19.0 F) |
| 1969 | -5.0 C (23.0 F) |
| 1970 | -3.9 C (25.0 F) |
| 1971 | -4.4 C (24.1 F) |
| 1972 | -5.0 C (23.0 F) |
| 1973 | -3.3 C (26.1 F) |
| 1974 | -3.3 C (26.1 F) |
| 1975 | -4.4 C (24.1 F) |
| 1976 | -4.4 C (24.1 F) |
| 1977 | -2.8 C (27.0 F) |
| 1978 | -5.0 C (23.0 F) |
| 1979 | -3.3 C (26.1 F) |
| 1980 | -4.4 C (24.1 F) |
| 1981 | -5.0 C (23.0 F) |
| 1982 | -2.8 C (27.0 F) |
| 1983 | -4.4 C (24.1 F) |
| 1984 | -2.8 C (27.0 F) |
| 1985 | -2.2 C (28.0 F) |
| 1986 | -6.7 C (19.9 F) |
| 1987 | -6.7 C (19.9 F) |
| 1988 | -8.3 C (17.1 F) |
| 1989 | 0.0 C (32.0 F) |
| 1996 | 5.0 C (41.0 F) |
| 1997 | -3.3 C (26.1 F) |
| 1998 | -4.4 C (24.1 F) |
| 1999 | -3.9 C (25.0 F) |
| 2000 | -3.3 C (26.1 F) |
| 2001 | 0.0 C (32.0 F) |
| 2002 | -2.8 C (27.0 F) |
| 2003 | -3.3 C (26.1 F) |
| 2004 | -3.3 C (26.1 F) |
| 2005 | 0.6 C (33.1 F) |
| 2006 | 0.0 C (32.0 F) |
| 2007 | 0.6 C (33.1 F) |
| 2008 | -3.9 C (25.0 F) |
| 2009 | 0.6 C (33.1 F) |
| 2010 | 1.1 C (34.0 F) |
| 2011 | 0.0 C (32.0 F) |
| 2012 | 3.3 C (37.9 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1961 | 40.6 mm (1.6 in) |
| 1962 | 39.9 mm (1.6 in) |
| 1963 | 45.0 mm (1.8 in) |
| 1964 | 57.4 mm (2.3 in) |
| 1965 | 89.9 mm (3.5 in) |
| 1966 | 98.3 mm (3.9 in) |
| 1967 | 59.9 mm (2.4 in) |
| 1968 | 49.3 mm (1.9 in) |
| 1969 | 59.9 mm (2.4 in) |
| 1970 | 57.4 mm (2.3 in) |
| 1971 | 57.9 mm (2.3 in) |
| 1972 | 83.8 mm (3.3 in) |
| 1973 | 45.5 mm (1.8 in) |
| 1974 | 59.9 mm (2.4 in) |
| 1975 | 57.2 mm (2.3 in) |
| 1976 | 68.8 mm (2.7 in) |
| 1977 | 77.0 mm (3.0 in) |
| 1978 | 60.2 mm (2.4 in) |
| 1979 | 48.5 mm (1.9 in) |
| 1980 | 55.9 mm (2.2 in) |
| 1981 | 49.8 mm (2.0 in) |
| 1982 | 54.9 mm (2.2 in) |
| 1983 | 77.0 mm (3.0 in) |
| 1984 | 45.5 mm (1.8 in) |
| 1985 | 51.8 mm (2.0 in) |
| 1986 | 52.8 mm (2.1 in) |
| 1987 | 55.4 mm (2.2 in) |
| 1988 | 97.8 mm (3.9 in) |
| 1989 | 10.9 mm (0.4 in) |
| 1996 | 29.5 mm (1.2 in) |
| 1997 | 86.4 mm (3.4 in) |
| 1998 | 61.5 mm (2.4 in) |
| 1999 | 25.4 mm (1.0 in) |
| 2000 | 34.8 mm (1.4 in) |
| 2001 | 34.8 mm (1.4 in) |
| 2002 | 50.8 mm (2.0 in) |
| 2003 | 42.4 mm (1.7 in) |
| 2004 | 40.4 mm (1.6 in) |
| 2005 | 52.8 mm (2.1 in) |
| 2006 | 68.3 mm (2.7 in) |
| 2007 | 77.0 mm (3.0 in) |
| 2008 | 54.9 mm (2.2 in) |
| 2009 | 79.8 mm (3.1 in) |
| 2010 | 95.0 mm (3.7 in) |
| 2011 | 54.9 mm (2.2 in) |
| 2012 | 56.4 mm (2.2 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1961 | 88.8 mm (3.5 in) |
| 1962 | 104.2 mm (4.1 in) |
| 1963 | 132.1 mm (5.2 in) |
| 1964 | 98.7 mm (3.9 in) |
| 1965 | 162.8 mm (6.4 in) |
| 1966 | 128.2 mm (5.0 in) |
| 1967 | 161.7 mm (6.4 in) |
| 1968 | 122.6 mm (4.8 in) |
| 1969 | 153.4 mm (6.0 in) |
| 1970 | 155.5 mm (6.1 in) |
| 1971 | 125.5 mm (4.9 in) |
| 1972 | 154.9 mm (6.1 in) |
| 1973 | 129.0 mm (5.1 in) |
| 1974 | 188.6 mm (7.4 in) |
| 1975 | 134.1 mm (5.3 in) |
| 1976 | 168.4 mm (6.6 in) |
| 1977 | 109.2 mm (4.3 in) |
| 1978 | 122.9 mm (4.8 in) |
| 1979 | 115.8 mm (4.6 in) |
| 1980 | 113.9 mm (4.5 in) |
| 1981 | 114.8 mm (4.5 in) |
| 1982 | 98.8 mm (3.9 in) |
| 1983 | 121.7 mm (4.8 in) |
| 1984 | 118.0 mm (4.6 in) |
| 1985 | 118.5 mm (4.7 in) |
| 1986 | 105.5 mm (4.2 in) |
| 1987 | 149.2 mm (5.9 in) |
| 1988 | 178.5 mm (7.0 in) |
| 1989 | 10.9 mm (0.4 in) |
| 1996 | 63.5 mm (2.5 in) |
| 1997 | 154.7 mm (6.1 in) |
| 1998 | 200.5 mm (7.9 in) |
| 1999 | 99.3 mm (3.9 in) |
| 2000 | 126.5 mm (5.0 in) |
| 2001 | 97.0 mm (3.8 in) |
| 2002 | 118.3 mm (4.7 in) |
| 2003 | 122.4 mm (4.8 in) |
| 2004 | 158.3 mm (6.2 in) |
| 2005 | 95.7 mm (3.8 in) |
| 2006 | 149.9 mm (5.9 in) |
| 2007 | 138.8 mm (5.5 in) |
| 2008 | 155.5 mm (6.1 in) |
| 2009 | 157.7 mm (6.2 in) |
| 2010 | 169.7 mm (6.7 in) |
| 2011 | 126.8 mm (5.0 in) |
| 2012 | 110.3 mm (4.3 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1961 | 93 days |
| 1962 | 84 days |
| 1963 | 75 days |
| 1964 | 74 days |
| 1965 | 30 days |
| 1966 | 49 days |
| 1967 | 69 days |
| 1968 | 25 days |
| 1969 | 41 days |
| 1970 | 63 days |
| 1971 | 61 days |
| 1972 | 34 days |
| 1973 | 47 days |
| 1974 | 22 days |
| 1975 | 63 days |
| 1976 | 53 days |
| 1977 | 51 days |
| 1978 | 19 days |
| 1979 | 36 days |
| 1980 | 27 days |
| 1981 | 31 days |
| 1982 | 55 days |
| 1983 | 52 days |
| 1984 | 47 days |
| 1985 | 35 days |
| 1986 | 46 days |
| 1987 | 49 days |
| 1988 | 35 days |
| 1989 | 31 days |
| 1996 | 20 days |
| 1997 | 40 days |
| 1998 | 117 days |
| 1999 | 61 days |
| 2000 | 69 days |
| 2001 | 18 days |
| 2002 | 40 days |
| 2003 | 43 days |
| 2004 | 59 days |
| 2005 | 91 days |
| 2006 | 35 days |
| 2007 | 37 days |
| 2008 | 82 days |
| 2009 | 35 days |
| 2010 | 46 days |
| 2011 | 63 days |
| 2012 | 38 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
23 years with a frostAcross 23 years with a frost, the median last spring frost at Santiago Tlazala falls on 28 February and the median first autumn frost on 31 October, which leaves a median of 243 days between them.
| Measure | Median, all years | Earliest period | Recent period (1966 to 2008) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 28 February | n/a | 28 February | n/a | n/a |
| First autumn frost | 31 October | n/a | 31 October | n/a | n/a |
| Growing days | 243 days | n/a | 243 days | n/a | n/a |
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
38 years, 1961 to 2012A day with at least 58.0 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 117.4 mm (4.6 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 58.0 mm (2.3 in) | |
| 5 years | 71.8 mm (2.8 in) | |
| 10 years | 81.7 mm (3.2 in) | |
| 25 years | 95.2 mm (3.7 in) | |
| 50 years | 105.9 mm (4.2 in) | Longer than the 38 years of record |
| 100 years | 117.4 mm (4.6 in) | Longer than the 38 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, 38 years of values from 1961 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: 98.3 mm (3.9 in) in 1966; 97.8 mm (3.9 in) in 1988; 89.9 mm (3.5 in) in 1965.
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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).