Tlahualilo Weather Records (MXN00010085)
Record envelope, standing records and threshold days for Tlahualilo (MXN00010085), Mexico, with 46 years of record.
Key Facts for Tlahualilo
- Tlahualilo (MXN00010085) is a weather station in Mexico at 26.10 latitude and -103.43 longitude, 1,100 m (3,608 ft) above sea level.
- The station reports from 1963 to 2008, 46 years of record.
- 1,464 records set at Tlahualilo still stand.
- Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
- Tlahualilo tied a daily record high minimum temperature of 20.6 C (69.1 F) on 28 August 2008.
About the Station
- Location: Mexico, 26.10 latitude, -103.43 longitude.
- Elevation: 1,100 m (3,608 ft).
- Period of record: 1963 to 2008, 46 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) | -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 | 40.0 C (104.0 F) | -5.0 C (23.0 F) | n/a | n/a |
| Apr | 40.6 C (105.1 F) | -1.7 C (28.9 F) | n/a | n/a |
| May | 43.3 C (109.9 F) | 5.0 C (41.0 F) | n/a | n/a |
| Jun | 43.9 C (111.0 F) | 10.6 C (51.1 F) | n/a | n/a |
| Jul | 42.8 C (109.0 F) | 11.7 C (53.1 F) | n/a | n/a |
| Aug | 41.7 C (107.1 F) | 11.7 C (53.1 F) | n/a | n/a |
| Sep | 40.6 C (105.1 F) | 5.6 C (42.1 F) | n/a | n/a |
| Oct | 38.9 C (102.0 F) | -1.1 C (30.0 F) | n/a | n/a |
| Nov | 35.0 C (95.0 F) | -6.7 C (19.9 F) | n/a | n/a |
| Dec | 35.6 C (96.1 F) | -9.4 C (15.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1963 | 33 |
| 1964 | 67 |
| 1965 | 63 |
| 1966 | 32 |
| 1967 | 55 |
| 1968 | 41 |
| 1969 | 49 |
| 1970 | 48 |
| 1971 | 44 |
| 1972 | 25 |
| 1973 | 56 |
| 1974 | 35 |
| 1975 | 35 |
| 1976 | 36 |
| 1977 | 31 |
| 1978 | 17 |
| 1979 | 36 |
| 1980 | 33 |
| 1981 | 17 |
| 1982 | 32 |
| 1983 | 38 |
| 1984 | 30 |
| 1985 | 32 |
| 1986 | 25 |
| 1987 | 28 |
| 1988 | 22 |
| 1989 | 32 |
| 1990 | 27 |
| 1991 | 24 |
| 1992 | 22 |
| 1993 | 19 |
| 1994 | 18 |
| 1995 | 16 |
| 1996 | 32 |
| 1997 | 38 |
| 1998 | 11 |
| 1999 | 17 |
| 2000 | 19 |
| 2001 | 14 |
| 2002 | 32 |
| 2003 | 26 |
| 2004 | 40 |
| 2005 | 34 |
| 2006 | 24 |
| 2007 | 37 |
| 2008 | 22 |
All-Time Record Progression
2 new records| Date | Kind | Detail |
|---|---|---|
| 1994-01-07 | Record low minimum temperature | Record low minimum temperature -9.4 C (15.1 F) |
| 2003-06-01 | Record high maximum temperature | Record high maximum temperature 43.9 C (111.0 F) |
Wettest Day of Each Month
Oct: 99.8 mm (3.9 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 24.1 mm (0.9 in) | 1 January 1983 |
| Feb | 15.7 mm (0.6 in) | 2 February 2003 |
| Mar | 22.9 mm (0.9 in) | 4 March 1968 |
| Apr | 74.9 mm (2.9 in) | 21 April 1979 |
| May | 61.5 mm (2.4 in) | 1 May 1985 |
| Jun | 62.0 mm (2.4 in) | 13 June 1999 |
| Jul | 52.8 mm (2.1 in) | 29 July 1999 |
| Aug | 62.0 mm (2.4 in) | 17 August 1998 |
| Sep | 75.9 mm (3.0 in) | 20 September 2003 |
| Oct | 99.8 mm (3.9 in) | 7 October 1989 |
| Nov | 22.9 mm (0.9 in) | 25 November 1982 |
| Dec | 34.8 mm (1.4 in) | 16 December 1991 |
Period of Record Coverage
1963 to 2008| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1963 | 122 | 33% | No |
| 1964 | 364 | 99% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 364 | 100% | Yes |
| 1967 | 364 | 100% | Yes |
| 1968 | 365 | 100% | Yes |
| 1969 | 362 | 99% | Yes |
| 1970 | 363 | 99% | Yes |
| 1971 | 364 | 100% | Yes |
| 1972 | 364 | 99% | Yes |
| 1973 | 303 | 83% | No |
| 1974 | 365 | 100% | Yes |
| 1975 | 363 | 99% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 364 | 100% | Yes |
| 1978 | 364 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 365 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 365 | 100% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 365 | 100% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 333 | 91% | Yes |
| 1991 | 337 | 92% | Yes |
| 1992 | 336 | 92% | Yes |
| 1993 | 365 | 100% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 365 | 100% | Yes |
| 1996 | 366 | 100% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 365 | 100% | Yes |
| 1999 | 365 | 100% | Yes |
| 2000 | 364 | 99% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 365 | 100% | Yes |
| 2003 | 365 | 100% | Yes |
| 2004 | 364 | 99% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 243 | 67% | No |
| 2007 | 323 | 88% | No |
| 2008 | 213 | 58% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 28 August 2008 | Tlahualilo, MX | daily high min (Tie) | 20.6 C (69.1 F) | tie | 43 years | 4 of 100 (Routine) |
| 25 August 2008 | Tlahualilo, MX | daily high max | 38.3 C (100.9 F) | 0.5 C (0.9 F) | 43 years | 17 of 100 (Routine) |
| 20 August 2008 | Tlahualilo, MX | daily high max (Tie) | 38.9 C (102.0 F) | tie | 44 years | 4 of 100 (Routine) |
| 20 August 2008 | Tlahualilo, MX | daily high min (Tie) | 20.6 C (69.1 F) | tie | 44 years | 4 of 100 (Routine) |
| 12 August 2008 | Tlahualilo, MX | monthly high min (Tie) | 22.8 C (73.0 F) | tie | 44 years | 6 of 100 (Routine) |
| 5 August 2008 | Tlahualilo, MX | daily high min (Tie) | 20.6 C (69.1 F) | tie | 44 years | 4 of 100 (Routine) |
| 1 August 2008 | Tlahualilo, MX | daily high max (Tie) | 40.0 C (104.0 F) | tie | 41 years | 4 of 100 (Routine) |
| 1 August 2008 | Tlahualilo, MX | daily high min (Tie) | 20.6 C (69.1 F) | tie | 22 years | 2 of 100 (Routine) |
| 31 July 2008 | Tlahualilo, MX | daily high max (Tie) | 38.9 C (102.0 F) | tie | 43 years | 4 of 100 (Routine) |
| 31 July 2008 | Tlahualilo, MX | daily high min (Tie) | 20.0 C (68.0 F) | tie | 37 years | 3 of 100 (Routine) |
| 30 July 2008 | Tlahualilo, MX | daily high min | 21.7 C (71.1 F) | 1.1 C (2.0 F) | 44 years | 24 of 100 (Routine) |
| 29 July 2008 | Tlahualilo, MX | daily high min | 22.8 C (73.0 F) | 0.6 C (1.1 F) | 44 years | 20 of 100 (Routine) |
| 28 July 2008 | Tlahualilo, MX | daily high min (Tie) | 20.6 C (69.1 F) | tie | 41 years | 4 of 100 (Routine) |
| 23 July 2008 | Tlahualilo, MX | daily high min (Tie) | 20.6 C (69.1 F) | tie | 42 years | 4 of 100 (Routine) |
| 22 July 2008 | Tlahualilo, MX | daily high min | 22.8 C (73.0 F) | 1.7 C (3.1 F) | 7 years | 17 of 100 (Routine) |
| 21 July 2008 | Tlahualilo, MX | monthly high min | 23.9 C (75.0 F) | 0.6 C (1.1 F) | 39 years | 28 of 100 (Routine) |
| 1 July 2008 | Tlahualilo, MX | daily high min | 21.7 C (71.1 F) | 0.6 C (1.1 F) | 22 years | 13 of 100 (Routine) |
| 30 June 2008 | Tlahualilo, MX | daily high min (Tie) | 21.7 C (71.1 F) | tie | 26 years | 2 of 100 (Routine) |
| 28 June 2008 | Tlahualilo, MX | daily high min (Tie) | 21.7 C (71.1 F) | tie | 25 years | 2 of 100 (Routine) |
| 24 June 2008 | Tlahualilo, MX | daily high max (Tie) | 40.0 C (104.0 F) | tie | 28 years | 3 of 100 (Routine) |
Climate Trend
38 complete years, 1964 to 2005| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1964 | 21.5 C | +0.95 C |
| 1965 | 22.0 C | +1.45 C |
| 1966 | 20.4 C | -0.19 C |
| 1967 | 21.0 C | +0.39 C |
| 1968 | 20.4 C | -0.16 C |
| 1969 | 21.4 C | +0.78 C |
| 1970 | 20.3 C | -0.25 C |
| 1971 | 21.0 C | +0.39 C |
| 1972 | 21.1 C | +0.54 C |
| 1974 | 20.3 C | -0.27 C |
| 1975 | 20.4 C | -0.16 C |
| 1976 | 19.5 C | -1.12 C |
| 1977 | 20.9 C | +0.29 C |
| 1978 | 20.4 C | -0.21 C |
| 1979 | 20.2 C | -0.41 C |
| 1980 | 20.8 C | +0.26 C |
| 1981 | 20.5 C | -0.09 C |
| 1982 | 20.8 C | +0.18 C |
| 1983 | 20.6 C | +0.01 C |
| 1984 | 19.7 C | -0.87 C |
| 1985 | 20.2 C | -0.36 C |
| 1986 | 20.0 C | -0.61 C |
| 1987 | 19.3 C | -1.25 C |
| 1988 | 20.1 C | -0.50 C |
| 1989 | 20.6 C | +0.03 C |
| 1993 | 20.5 C | -0.03 C |
| 1994 | 21.1 C | +0.54 C |
| 1995 | 20.8 C | +0.25 C |
| 1996 | 20.4 C | -0.13 C |
| 1997 | 19.6 C | -0.95 C |
| 1998 | 20.9 C | +0.34 C |
| 1999 | 20.5 C | -0.11 C |
| 2000 | 20.6 C | +0.06 C |
| 2001 | 20.7 C | +0.10 C |
| 2002 | 20.5 C | -0.08 C |
| 2003 | 20.3 C | -0.30 C |
| 2004 | 20.7 C | +0.08 C |
| 2005 | 22.1 C | +1.54 C |
The fitted trend in annual mean temperature here over 1964 to 2005 is -0.1 C (-0.2 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.4 to 0.2) 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 | -0.1 C (-0.2 to 0.1) per decade | -0.1 F (-0.4 to 0.2) per decade | 1964 to 2005 | 38 | Not clearly different from zero |
| Mean daily maximum | -0.1 C (-0.3 to 0.1) per decade | -0.1 F (-0.5 to 0.2) per decade | 1964 to 2005 | 38 | Not clearly different from zero |
| Mean daily minimum | -0.04 C (-0.21 to 0.13) per decade | -0.1 F (-0.4 to 0.2) per decade | 1964 to 2005 | 38 | 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
1963 to 2008| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 43.9 C (111.0 F) | 2003 | 41.1 C (106.0 F) | 46 |
| Coldest night (TNn) | -9.4 C (15.1 F) | 1994 | -6.1 C (21.0 F) | 46 |
| Wettest day (Rx1day) | 99.8 mm (3.9 in) | 1989 | 39.9 mm (1.6 in) | 46 |
| Wettest five days (Rx5day) | 113.6 mm (4.5 in) | 1986 | 56.9 mm (2.2 in) | 46 |
| Longest dry spell (CDD) | 192 days | 1975 | 87 days | 46 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1963 | 39.4 C (102.9 F) |
| 1964 | 42.2 C (108.0 F) |
| 1965 | 41.7 C (107.1 F) |
| 1966 | 40.6 C (105.1 F) |
| 1967 | 41.1 C (106.0 F) |
| 1968 | 40.6 C (105.1 F) |
| 1969 | 42.2 C (108.0 F) |
| 1970 | 41.1 C (106.0 F) |
| 1971 | 40.6 C (105.1 F) |
| 1972 | 40.0 C (104.0 F) |
| 1973 | 40.0 C (104.0 F) |
| 1974 | 40.6 C (105.1 F) |
| 1975 | 41.7 C (107.1 F) |
| 1976 | 40.6 C (105.1 F) |
| 1977 | 40.0 C (104.0 F) |
| 1978 | 40.6 C (105.1 F) |
| 1979 | 40.0 C (104.0 F) |
| 1980 | 41.7 C (107.1 F) |
| 1981 | 41.7 C (107.1 F) |
| 1982 | 42.8 C (109.0 F) |
| 1983 | 41.7 C (107.1 F) |
| 1984 | 40.6 C (105.1 F) |
| 1985 | 41.7 C (107.1 F) |
| 1986 | 40.0 C (104.0 F) |
| 1987 | 40.6 C (105.1 F) |
| 1988 | 40.6 C (105.1 F) |
| 1989 | 43.3 C (109.9 F) |
| 1990 | 41.1 C (106.0 F) |
| 1991 | 40.6 C (105.1 F) |
| 1992 | 42.2 C (108.0 F) |
| 1993 | 41.1 C (106.0 F) |
| 1994 | 40.6 C (105.1 F) |
| 1995 | 40.6 C (105.1 F) |
| 1996 | 41.7 C (107.1 F) |
| 1997 | 40.6 C (105.1 F) |
| 1998 | 42.2 C (108.0 F) |
| 1999 | 41.1 C (106.0 F) |
| 2000 | 40.6 C (105.1 F) |
| 2001 | 40.6 C (105.1 F) |
| 2002 | 42.8 C (109.0 F) |
| 2003 | 43.9 C (111.0 F) |
| 2004 | 42.2 C (108.0 F) |
| 2005 | 41.7 C (107.1 F) |
| 2006 | 42.2 C (108.0 F) |
| 2007 | 41.7 C (107.1 F) |
| 2008 | 42.8 C (109.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1963 | -7.8 C (18.0 F) |
| 1964 | -8.3 C (17.1 F) |
| 1965 | -5.0 C (23.0 F) |
| 1966 | -7.2 C (19.0 F) |
| 1967 | -7.2 C (19.0 F) |
| 1968 | -4.4 C (24.1 F) |
| 1969 | -3.9 C (25.0 F) |
| 1970 | -6.7 C (19.9 F) |
| 1971 | -7.2 C (19.0 F) |
| 1972 | -5.0 C (23.0 F) |
| 1973 | -8.3 C (17.1 F) |
| 1974 | -5.6 C (21.9 F) |
| 1975 | -8.3 C (17.1 F) |
| 1976 | -7.2 C (19.0 F) |
| 1977 | -5.0 C (23.0 F) |
| 1978 | -6.1 C (21.0 F) |
| 1979 | -7.2 C (19.0 F) |
| 1980 | -5.6 C (21.9 F) |
| 1981 | -3.3 C (26.1 F) |
| 1982 | -6.1 C (21.0 F) |
| 1983 | -8.9 C (16.0 F) |
| 1984 | -6.7 C (19.9 F) |
| 1985 | -7.8 C (18.0 F) |
| 1986 | -6.1 C (21.0 F) |
| 1987 | -5.6 C (21.9 F) |
| 1988 | -6.7 C (19.9 F) |
| 1989 | -6.1 C (21.0 F) |
| 1990 | -8.3 C (17.1 F) |
| 1991 | -3.3 C (26.1 F) |
| 1992 | -4.4 C (24.1 F) |
| 1993 | 0.0 C (32.0 F) |
| 1994 | -9.4 C (15.1 F) |
| 1995 | -4.4 C (24.1 F) |
| 1996 | -8.9 C (16.0 F) |
| 1997 | -9.4 C (15.1 F) |
| 1998 | -5.0 C (23.0 F) |
| 1999 | -5.6 C (21.9 F) |
| 2000 | -6.7 C (19.9 F) |
| 2001 | -7.8 C (18.0 F) |
| 2002 | -6.1 C (21.0 F) |
| 2003 | -7.2 C (19.0 F) |
| 2004 | -6.1 C (21.0 F) |
| 2005 | -6.1 C (21.0 F) |
| 2006 | -3.3 C (26.1 F) |
| 2007 | -6.1 C (21.0 F) |
| 2008 | -3.3 C (26.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1963 | 41.9 mm (1.6 in) |
| 1964 | 34.3 mm (1.4 in) |
| 1965 | 40.9 mm (1.6 in) |
| 1966 | 42.9 mm (1.7 in) |
| 1967 | 25.4 mm (1.0 in) |
| 1968 | 23.9 mm (0.9 in) |
| 1969 | 16.3 mm (0.6 in) |
| 1970 | 53.3 mm (2.1 in) |
| 1971 | 26.9 mm (1.1 in) |
| 1972 | 50.3 mm (2.0 in) |
| 1973 | 26.4 mm (1.0 in) |
| 1974 | 15.5 mm (0.6 in) |
| 1975 | 38.9 mm (1.5 in) |
| 1976 | 29.0 mm (1.1 in) |
| 1977 | 33.8 mm (1.3 in) |
| 1978 | 31.8 mm (1.3 in) |
| 1979 | 74.9 mm (2.9 in) |
| 1980 | 52.8 mm (2.1 in) |
| 1981 | 33.8 mm (1.3 in) |
| 1982 | 31.0 mm (1.2 in) |
| 1983 | 28.4 mm (1.1 in) |
| 1984 | 36.8 mm (1.4 in) |
| 1985 | 61.5 mm (2.4 in) |
| 1986 | 48.8 mm (1.9 in) |
| 1987 | 19.8 mm (0.8 in) |
| 1988 | 47.8 mm (1.9 in) |
| 1989 | 99.8 mm (3.9 in) |
| 1990 | 60.5 mm (2.4 in) |
| 1991 | 50.8 mm (2.0 in) |
| 1992 | 57.9 mm (2.3 in) |
| 1993 | 54.9 mm (2.2 in) |
| 1994 | 36.3 mm (1.4 in) |
| 1995 | 59.9 mm (2.4 in) |
| 1996 | 27.9 mm (1.1 in) |
| 1997 | 54.9 mm (2.2 in) |
| 1998 | 62.0 mm (2.4 in) |
| 1999 | 62.0 mm (2.4 in) |
| 2000 | 63.0 mm (2.5 in) |
| 2001 | 26.9 mm (1.1 in) |
| 2002 | 26.4 mm (1.0 in) |
| 2003 | 75.9 mm (3.0 in) |
| 2004 | 47.0 mm (1.9 in) |
| 2005 | 46.5 mm (1.8 in) |
| 2006 | 27.4 mm (1.1 in) |
| 2007 | 15.7 mm (0.6 in) |
| 2008 | 20.8 mm (0.8 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1963 | 63.0 mm (2.5 in) |
| 1964 | 47.5 mm (1.9 in) |
| 1965 | 41.0 mm (1.6 in) |
| 1966 | 51.8 mm (2.0 in) |
| 1967 | 35.3 mm (1.4 in) |
| 1968 | 38.7 mm (1.5 in) |
| 1969 | 30.7 mm (1.2 in) |
| 1970 | 89.9 mm (3.5 in) |
| 1971 | 62.7 mm (2.5 in) |
| 1972 | 92.3 mm (3.6 in) |
| 1973 | 48.3 mm (1.9 in) |
| 1974 | 36.1 mm (1.4 in) |
| 1975 | 50.4 mm (2.0 in) |
| 1976 | 34.0 mm (1.3 in) |
| 1977 | 55.7 mm (2.2 in) |
| 1978 | 58.5 mm (2.3 in) |
| 1979 | 74.9 mm (2.9 in) |
| 1980 | 93.8 mm (3.7 in) |
| 1981 | 70.9 mm (2.8 in) |
| 1982 | 56.6 mm (2.2 in) |
| 1983 | 57.9 mm (2.3 in) |
| 1984 | 59.9 mm (2.4 in) |
| 1985 | 64.3 mm (2.5 in) |
| 1986 | 113.6 mm (4.5 in) |
| 1987 | 57.2 mm (2.3 in) |
| 1988 | 47.8 mm (1.9 in) |
| 1989 | 108.7 mm (4.3 in) |
| 1990 | 63.5 mm (2.5 in) |
| 1991 | 81.1 mm (3.2 in) |
| 1992 | 61.5 mm (2.4 in) |
| 1993 | 65.8 mm (2.6 in) |
| 1994 | 36.6 mm (1.4 in) |
| 1995 | 111.2 mm (4.4 in) |
| 1996 | 40.6 mm (1.6 in) |
| 1997 | 55.7 mm (2.2 in) |
| 1998 | 99.3 mm (3.9 in) |
| 1999 | 65.1 mm (2.6 in) |
| 2000 | 73.9 mm (2.9 in) |
| 2001 | 28.2 mm (1.1 in) |
| 2002 | 41.2 mm (1.6 in) |
| 2003 | 98.0 mm (3.9 in) |
| 2004 | 49.1 mm (1.9 in) |
| 2005 | 51.6 mm (2.0 in) |
| 2006 | 28.7 mm (1.1 in) |
| 2007 | 32.7 mm (1.3 in) |
| 2008 | 26.9 mm (1.1 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1963 | 25 days |
| 1964 | 106 days |
| 1965 | 86 days |
| 1966 | 87 days |
| 1967 | 70 days |
| 1968 | 67 days |
| 1969 | 86 days |
| 1970 | 91 days |
| 1971 | 132 days |
| 1972 | 130 days |
| 1973 | 80 days |
| 1974 | 75 days |
| 1975 | 192 days |
| 1976 | 99 days |
| 1977 | 94 days |
| 1978 | 96 days |
| 1979 | 86 days |
| 1980 | 70 days |
| 1981 | 41 days |
| 1982 | 68 days |
| 1983 | 114 days |
| 1984 | 68 days |
| 1985 | 85 days |
| 1986 | 113 days |
| 1987 | 70 days |
| 1988 | 95 days |
| 1989 | 81 days |
| 1990 | 77 days |
| 1991 | 99 days |
| 1992 | 100 days |
| 1993 | 110 days |
| 1994 | 78 days |
| 1995 | 104 days |
| 1996 | 129 days |
| 1997 | 49 days |
| 1998 | 158 days |
| 1999 | 86 days |
| 2000 | 111 days |
| 2001 | 73 days |
| 2002 | 111 days |
| 2003 | 54 days |
| 2004 | 50 days |
| 2005 | 79 days |
| 2006 | 107 days |
| 2007 | 92 days |
| 2008 | 91 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
37 years with a frostAcross 37 years with a frost, the median last spring frost at Tlahualilo falls on 6 March and the median first autumn frost on 25 November, which leaves a median of 261 days between them.
Fitted over all years, the growing season changes by +3.7 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1971 to 2005) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 6 March | n/a | 7 March | n/a | -2.9 days per decade |
| First autumn frost | 25 November | n/a | 25 November | n/a | +0.7 days per decade |
| Growing days | 261 days | n/a | 262 days | n/a | +3.7 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
41 years, 1964 to 2005A day with at least 42.1 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 95.2 mm (3.7 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 42.1 mm (1.7 in) | |
| 5 years | 58.5 mm (2.3 in) | |
| 10 years | 68.4 mm (2.7 in) | |
| 25 years | 80.0 mm (3.1 in) | |
| 50 years | 87.9 mm (3.5 in) | Longer than the 41 years of record |
| 100 years | 95.2 mm (3.7 in) | Longer than the 41 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, 41 years of values from 1964 to 2005.
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: 99.8 mm (3.9 in) in 1989; 75.9 mm (3.0 in) in 2003; 74.9 mm (2.9 in) in 1979.
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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).