Juan Aldama Weather Records (MXN00032028)
Record envelope, standing records and threshold days for Juan Aldama (MXN00032028), Mexico, with 50 years of record.
Key Facts for Juan Aldama
- Juan Aldama (MXN00032028) is a weather station in Mexico at 24.27 latitude and -103.38 longitude, 1,999 m (6,558 ft) above sea level.
- The station reports from 1963 to 2012, 50 years of record.
- 1,464 records set at Juan Aldama still stand.
- Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
- Juan Aldama set a daily record precipitation of 1.8 mm (0.07 in) on 23 November 2012.
About the Station
- Location: Mexico, 24.27 latitude, -103.38 longitude.
- Elevation: 1,999 m (6,558 ft).
- Period of record: 1963 to 2012, 50 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 | 30.0 C (86.0 F) | -7.8 C (18.0 F) | n/a | n/a |
| Feb | 30.0 C (86.0 F) | -11.7 C (10.9 F) | n/a | n/a |
| Mar | 35.6 C (96.1 F) | -5.0 C (23.0 F) | n/a | n/a |
| Apr | 36.7 C (98.1 F) | -2.2 C (28.0 F) | n/a | n/a |
| May | 38.9 C (102.0 F) | 5.0 C (41.0 F) | n/a | n/a |
| Jun | 39.4 C (102.9 F) | 9.4 C (48.9 F) | n/a | n/a |
| Jul | 38.9 C (102.0 F) | 5.6 C (42.1 F) | n/a | n/a |
| Aug | 35.0 C (95.0 F) | 7.8 C (46.0 F) | n/a | n/a |
| Sep | 35.0 C (95.0 F) | 3.9 C (39.0 F) | n/a | n/a |
| Oct | 35.6 C (96.1 F) | -3.9 C (25.0 F) | n/a | n/a |
| Nov | 30.6 C (87.1 F) | -10.0 C (14.0 F) | n/a | n/a |
| Dec | 30.6 C (87.1 F) | -14.4 C (6.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1963 | 18 |
| 1964 | 28 |
| 1965 | 33 |
| 1966 | 24 |
| 1967 | 49 |
| 1968 | 28 |
| 1969 | 34 |
| 1970 | 41 |
| 1971 | 33 |
| 1972 | 59 |
| 1973 | 40 |
| 1974 | 68 |
| 1975 | 20 |
| 1976 | 37 |
| 1977 | 63 |
| 1978 | 46 |
| 1979 | 39 |
| 1980 | 84 |
| 1981 | 39 |
| 1982 | 41 |
| 1983 | 34 |
| 1984 | 26 |
| 1985 | 6 |
| 1987 | 12 |
| 1988 | 28 |
| 1989 | 27 |
| 1990 | 17 |
| 1991 | 21 |
| 1992 | 50 |
| 1993 | 17 |
| 1994 | 12 |
| 1995 | 17 |
| 1996 | 17 |
| 1997 | 47 |
| 1998 | 19 |
| 1999 | 17 |
| 2000 | 26 |
| 2001 | 19 |
| 2002 | 17 |
| 2003 | 35 |
| 2005 | 21 |
| 2006 | 33 |
| 2007 | 23 |
| 2008 | 22 |
| 2009 | 10 |
| 2010 | 34 |
| 2011 | 22 |
| 2012 | 11 |
All-Time Record Progression
1 new records| Date | Kind | Detail |
|---|---|---|
| 1997-12-13 | Record low minimum temperature | Record low minimum temperature -14.4 C (6.1 F) |
Wettest Day of Each Month
Sep: 79.8 mm (3.1 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 23.4 mm (0.9 in) | 25 January 2006 |
| Feb | 28.4 mm (1.1 in) | 25 February 2005 |
| Mar | 33.8 mm (1.3 in) | 3 March 1968 |
| Apr | 21.6 mm (0.9 in) | 13 April 2008 |
| May | 37.8 mm (1.5 in) | 26 May 1983 |
| Jun | 57.4 mm (2.3 in) | 15 June 1981 |
| Jul | 78.5 mm (3.1 in) | 5 July 1981 |
| Aug | 74.4 mm (2.9 in) | 16 August 1983 |
| Sep | 79.8 mm (3.1 in) | 29 September 1976 |
| Oct | 51.8 mm (2.0 in) | 1 October 1970 |
| Nov | 49.3 mm (1.9 in) | 25 November 1982 |
| Dec | 37.6 mm (1.5 in) | 2 December 1965 |
Period of Record Coverage
1963 to 2012| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1963 | 122 | 33% | No |
| 1964 | 335 | 92% | Yes |
| 1965 | 364 | 100% | Yes |
| 1966 | 364 | 100% | Yes |
| 1967 | 333 | 91% | Yes |
| 1968 | 334 | 91% | Yes |
| 1969 | 363 | 99% | Yes |
| 1970 | 363 | 99% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 304 | 83% | No |
| 1974 | 365 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 365 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 365 | 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 | 59 | 16% | No |
| 1987 | 147 | 40% | No |
| 1988 | 365 | 100% | Yes |
| 1989 | 360 | 99% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 335 | 92% | Yes |
| 1992 | 357 | 98% | Yes |
| 1993 | 329 | 90% | Yes |
| 1994 | 354 | 97% | Yes |
| 1995 | 360 | 99% | Yes |
| 1996 | 366 | 100% | Yes |
| 1997 | 357 | 98% | Yes |
| 1998 | 365 | 100% | Yes |
| 1999 | 365 | 100% | Yes |
| 2000 | 361 | 99% | Yes |
| 2001 | 334 | 92% | Yes |
| 2002 | 288 | 79% | No |
| 2003 | 360 | 99% | Yes |
| 2005 | 334 | 92% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 304 | 83% | No |
| 2009 | 243 | 67% | No |
| 2010 | 347 | 95% | Yes |
| 2011 | 303 | 83% | No |
| 2012 | 256 | 70% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 23 November 2012 | Juan Aldama, MX | daily rain | 1.8 mm (0.07 in) | 1.8 mm (0.07 in) | 49 years | 20 of 100 (Routine) |
| 22 September 2012 | Juan Aldama, MX | daily low min | 5.6 C (42.1 F) | 3.3 C (5.9 F) | 46 years | 34 of 100 (Routine) |
| 21 September 2012 | Juan Aldama, MX | daily low min | 5.6 C (42.1 F) | 2.2 C (4.0 F) | 28 years | 23 of 100 (Routine) |
| 20 September 2012 | Juan Aldama, MX | daily low min (Tie) | 7.8 C (46.0 F) | tie | 28 years | 3 of 100 (Routine) |
| 17 September 2012 | Juan Aldama, MX | daily low min | 7.8 C (46.0 F) | 1.6 C (2.9 F) | 4 years | 13 of 100 (Routine) |
| 16 September 2012 | Juan Aldama, MX | daily low min (Tie) | 8.9 C (48.0 F) | tie | 33 years | 3 of 100 (Routine) |
| 26 August 2012 | Juan Aldama, MX | daily high min | 16.7 C (62.1 F) | 1.1 C (2.0 F) | 43 years | 24 of 100 (Routine) |
| 23 August 2012 | Juan Aldama, MX | daily low min (Tie) | 11.1 C (52.0 F) | tie | 13 years | 2 of 100 (Routine) |
| 22 August 2012 | Juan Aldama, MX | daily low min (Tie) | 9.4 C (48.9 F) | tie | 45 years | 4 of 100 (Routine) |
| 8 August 2012 | Juan Aldama, MX | daily low min (Tie) | 12.8 C (55.0 F) | tie | 44 years | 4 of 100 (Routine) |
| 6 August 2012 | Juan Aldama, MX | daily low max (Tie) | 21.1 C (70.0 F) | tie | 10 years | 2 of 100 (Routine) |
| 13 July 2012 | Juan Aldama, MX | daily low max | 21.1 C (70.0 F) | 0.6 C (1.1 F) | 28 years | 14 of 100 (Routine) |
| 17 June 2012 | Juan Aldama, MX | daily low max | 22.8 C (73.0 F) | 1.6 C (2.9 F) | 31 years | 18 of 100 (Routine) |
| 17 June 2012 | Juan Aldama, MX | daily low min (Tie) | 12.8 C (55.0 F) | tie | 13 years | 2 of 100 (Routine) |
| 31 May 2012 | Juan Aldama, MX | daily high min (Tie) | 17.8 C (64.0 F) | tie | 36 years | 3 of 100 (Routine) |
| 24 May 2012 | Juan Aldama, MX | daily rain | 0.3 mm (0.01 in) | 0.3 mm (0.01 in) | 47 years | 19 of 100 (Routine) |
| 2 March 2012 | Juan Aldama, MX | daily high min | 13.9 C (57.0 F) | 2.2 C (4.0 F) | 34 years | 21 of 100 (Routine) |
| 29 February 2012 | Juan Aldama, MX | daily high max | 28.9 C (84.0 F) | 2.2 C (4.0 F) | 40 years | 22 of 100 (Routine) |
| 25 February 2012 | Juan Aldama, MX | daily low min | -3.9 C (25.0 F) | 0.6 C (1.1 F) | 46 years | 20 of 100 (Routine) |
| 12 February 2012 | Juan Aldama, MX | daily low max | 15.0 C (59.0 F) | 0.6 C (1.1 F) | 12 years | 9 of 100 (Routine) |
Climate Trend
30 complete years, 1965 to 2007| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1965 | 18.1 C | +0.04 C |
| 1966 | 17.7 C | -0.32 C |
| 1969 | 18.7 C | +0.68 C |
| 1970 | 18.6 C | +0.55 C |
| 1971 | 19.4 C | +1.34 C |
| 1972 | 19.4 C | +1.39 C |
| 1974 | 19.4 C | +1.38 C |
| 1975 | 18.2 C | +0.21 C |
| 1976 | 17.7 C | -0.33 C |
| 1977 | 18.6 C | +0.62 C |
| 1978 | 18.3 C | +0.30 C |
| 1979 | 18.3 C | +0.25 C |
| 1980 | 19.3 C | +1.28 C |
| 1981 | 18.8 C | +0.73 C |
| 1982 | 19.3 C | +1.23 C |
| 1983 | 18.3 C | +0.25 C |
| 1984 | 17.7 C | -0.32 C |
| 1988 | 18.0 C | -0.07 C |
| 1989 | 18.6 C | +0.60 C |
| 1990 | 18.5 C | +0.45 C |
| 1994 | 17.5 C | -0.52 C |
| 1995 | 17.5 C | -0.53 C |
| 1996 | 17.2 C | -0.85 C |
| 1997 | 16.3 C | -1.69 C |
| 1998 | 17.3 C | -0.76 C |
| 1999 | 16.9 C | -1.11 C |
| 2000 | 17.2 C | -0.87 C |
| 2003 | 16.8 C | -1.25 C |
| 2006 | 16.8 C | -1.19 C |
| 2007 | 16.6 C | -1.46 C |
The annual mean temperature here has fallen by 0.5 C (0.4 to 0.7) per decade over 1965 to 2007. In Fahrenheit: 1.0 F (0.6 to 1.3) 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 | -0.5 C (-0.7 to -0.4) per decade | -1.0 F (-1.3 to -0.6) per decade | 1965 to 2007 | 30 | Fall |
| Mean daily maximum | -0.6 C (-0.9 to -0.4) per decade | -1.1 F (-1.5 to -0.6) per decade | 1965 to 2007 | 30 | Fall |
| Mean daily minimum | -0.5 C (-0.7 to -0.2) per decade | -0.8 F (-1.3 to -0.4) per decade | 1965 to 2007 | 30 | 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
1963 to 2012| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 39.4 C (102.9 F) | 1982 | 36.1 C (97.0 F) | 48 |
| Coldest night (TNn) | -14.4 C (6.1 F) | 1997 | -5.0 C (23.0 F) | 48 |
| Wettest day (Rx1day) | 79.8 mm (3.1 in) | 1976 | 40.0 mm (1.6 in) | 48 |
| Wettest five days (Rx5day) | 151.7 mm (6.0 in) | 2003 | 73.5 mm (2.9 in) | 48 |
| Longest dry spell (CDD) | 163 days | 1976 | 90 days | 48 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1963 | 32.8 C (91.0 F) |
| 1964 | 36.7 C (98.1 F) |
| 1965 | 37.2 C (99.0 F) |
| 1966 | 37.8 C (100.0 F) |
| 1967 | 38.9 C (102.0 F) |
| 1968 | 37.2 C (99.0 F) |
| 1969 | 37.8 C (100.0 F) |
| 1970 | 37.8 C (100.0 F) |
| 1971 | 36.7 C (98.1 F) |
| 1972 | 36.7 C (98.1 F) |
| 1973 | 37.8 C (100.0 F) |
| 1974 | 37.8 C (100.0 F) |
| 1975 | 36.7 C (98.1 F) |
| 1976 | 37.2 C (99.0 F) |
| 1977 | 38.9 C (102.0 F) |
| 1978 | 36.7 C (98.1 F) |
| 1979 | 33.9 C (93.0 F) |
| 1980 | 36.1 C (97.0 F) |
| 1981 | 35.6 C (96.1 F) |
| 1982 | 39.4 C (102.9 F) |
| 1983 | 37.8 C (100.0 F) |
| 1984 | 36.7 C (98.1 F) |
| 1985 | 26.1 C (79.0 F) |
| 1987 | 35.0 C (95.0 F) |
| 1988 | 35.0 C (95.0 F) |
| 1989 | 38.3 C (100.9 F) |
| 1990 | 37.8 C (100.0 F) |
| 1991 | 36.1 C (97.0 F) |
| 1992 | 36.1 C (97.0 F) |
| 1993 | 35.6 C (96.1 F) |
| 1994 | 33.9 C (93.0 F) |
| 1995 | 37.8 C (100.0 F) |
| 1996 | 37.8 C (100.0 F) |
| 1997 | 35.0 C (95.0 F) |
| 1998 | 35.0 C (95.0 F) |
| 1999 | 35.0 C (95.0 F) |
| 2000 | 33.3 C (91.9 F) |
| 2001 | 33.9 C (93.0 F) |
| 2002 | 35.0 C (95.0 F) |
| 2003 | 35.0 C (95.0 F) |
| 2005 | 35.6 C (96.1 F) |
| 2006 | 33.9 C (93.0 F) |
| 2007 | 33.9 C (93.0 F) |
| 2008 | 35.0 C (95.0 F) |
| 2009 | 30.0 C (86.0 F) |
| 2010 | 35.0 C (95.0 F) |
| 2011 | 36.1 C (97.0 F) |
| 2012 | 35.0 C (95.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1963 | -5.0 C (23.0 F) |
| 1964 | -5.0 C (23.0 F) |
| 1965 | -5.0 C (23.0 F) |
| 1966 | -5.0 C (23.0 F) |
| 1967 | -7.8 C (18.0 F) |
| 1968 | -5.0 C (23.0 F) |
| 1969 | -3.3 C (26.1 F) |
| 1970 | -3.9 C (25.0 F) |
| 1971 | -3.3 C (26.1 F) |
| 1972 | 0.0 C (32.0 F) |
| 1973 | -5.6 C (21.9 F) |
| 1974 | -2.2 C (28.0 F) |
| 1975 | -5.6 C (21.9 F) |
| 1976 | -2.2 C (28.0 F) |
| 1977 | -2.2 C (28.0 F) |
| 1978 | -2.2 C (28.0 F) |
| 1979 | -8.3 C (17.1 F) |
| 1980 | -3.3 C (26.1 F) |
| 1981 | -3.3 C (26.1 F) |
| 1982 | -1.7 C (28.9 F) |
| 1983 | -5.0 C (23.0 F) |
| 1984 | 0.0 C (32.0 F) |
| 1985 | -6.1 C (21.0 F) |
| 1987 | 0.0 C (32.0 F) |
| 1988 | -4.4 C (24.1 F) |
| 1989 | 0.0 C (32.0 F) |
| 1990 | -1.1 C (30.0 F) |
| 1991 | -1.7 C (28.9 F) |
| 1992 | -5.0 C (23.0 F) |
| 1993 | -1.1 C (30.0 F) |
| 1994 | -6.1 C (21.0 F) |
| 1995 | -2.8 C (27.0 F) |
| 1996 | -6.1 C (21.0 F) |
| 1997 | -14.4 C (6.1 F) |
| 1998 | -5.0 C (23.0 F) |
| 1999 | -7.2 C (19.0 F) |
| 2000 | -5.0 C (23.0 F) |
| 2001 | -7.2 C (19.0 F) |
| 2002 | -5.0 C (23.0 F) |
| 2003 | -5.6 C (21.9 F) |
| 2005 | -3.3 C (26.1 F) |
| 2006 | -6.1 C (21.0 F) |
| 2007 | -3.9 C (25.0 F) |
| 2008 | -7.2 C (19.0 F) |
| 2009 | -4.4 C (24.1 F) |
| 2010 | -6.7 C (19.9 F) |
| 2011 | -11.7 C (10.9 F) |
| 2012 | -3.9 C (25.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1963 | 19.6 mm (0.8 in) |
| 1964 | 29.5 mm (1.2 in) |
| 1965 | 37.6 mm (1.5 in) |
| 1966 | 31.5 mm (1.2 in) |
| 1967 | 36.3 mm (1.4 in) |
| 1968 | 38.9 mm (1.5 in) |
| 1969 | 32.3 mm (1.3 in) |
| 1970 | 65.8 mm (2.6 in) |
| 1971 | 39.9 mm (1.6 in) |
| 1972 | 45.0 mm (1.8 in) |
| 1973 | 49.8 mm (2.0 in) |
| 1974 | 43.4 mm (1.7 in) |
| 1975 | 48.3 mm (1.9 in) |
| 1976 | 79.8 mm (3.1 in) |
| 1977 | 46.5 mm (1.8 in) |
| 1978 | 73.4 mm (2.9 in) |
| 1979 | 63.5 mm (2.5 in) |
| 1980 | 34.3 mm (1.4 in) |
| 1981 | 78.5 mm (3.1 in) |
| 1982 | 49.3 mm (1.9 in) |
| 1983 | 74.4 mm (2.9 in) |
| 1984 | 47.0 mm (1.9 in) |
| 1985 | 11.4 mm (0.4 in) |
| 1987 | 19.8 mm (0.8 in) |
| 1988 | 71.6 mm (2.8 in) |
| 1989 | 34.5 mm (1.4 in) |
| 1990 | 44.5 mm (1.8 in) |
| 1991 | 49.3 mm (1.9 in) |
| 1992 | 21.3 mm (0.8 in) |
| 1993 | 19.8 mm (0.8 in) |
| 1994 | 22.9 mm (0.9 in) |
| 1995 | 33.8 mm (1.3 in) |
| 1996 | 39.9 mm (1.6 in) |
| 1997 | 38.9 mm (1.5 in) |
| 1998 | 38.6 mm (1.5 in) |
| 1999 | 51.1 mm (2.0 in) |
| 2000 | 42.4 mm (1.7 in) |
| 2001 | 23.9 mm (0.9 in) |
| 2002 | 49.5 mm (1.9 in) |
| 2003 | 71.4 mm (2.8 in) |
| 2005 | 28.4 mm (1.1 in) |
| 2006 | 36.3 mm (1.4 in) |
| 2007 | 44.7 mm (1.8 in) |
| 2008 | 51.6 mm (2.0 in) |
| 2009 | 46.0 mm (1.8 in) |
| 2010 | 40.1 mm (1.6 in) |
| 2011 | 31.8 mm (1.3 in) |
| 2012 | 21.3 mm (0.8 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1963 | 46.1 mm (1.8 in) |
| 1964 | 59.9 mm (2.4 in) |
| 1965 | 65.0 mm (2.6 in) |
| 1966 | 70.9 mm (2.8 in) |
| 1967 | 67.8 mm (2.7 in) |
| 1968 | 74.5 mm (2.9 in) |
| 1969 | 34.6 mm (1.4 in) |
| 1970 | 111.5 mm (4.4 in) |
| 1971 | 115.3 mm (4.5 in) |
| 1972 | 68.1 mm (2.7 in) |
| 1973 | 95.8 mm (3.8 in) |
| 1974 | 66.9 mm (2.6 in) |
| 1975 | 109.3 mm (4.3 in) |
| 1976 | 144.4 mm (5.7 in) |
| 1977 | 94.2 mm (3.7 in) |
| 1978 | 121.7 mm (4.8 in) |
| 1979 | 125.8 mm (5.0 in) |
| 1980 | 50.3 mm (2.0 in) |
| 1981 | 118.3 mm (4.7 in) |
| 1982 | 49.3 mm (1.9 in) |
| 1983 | 138.7 mm (5.5 in) |
| 1984 | 82.3 mm (3.2 in) |
| 1985 | 21.6 mm (0.9 in) |
| 1987 | 31.8 mm (1.3 in) |
| 1988 | 87.9 mm (3.5 in) |
| 1989 | 72.4 mm (2.9 in) |
| 1990 | 91.8 mm (3.6 in) |
| 1991 | 140.7 mm (5.5 in) |
| 1992 | 33.4 mm (1.3 in) |
| 1993 | 44.7 mm (1.8 in) |
| 1994 | 46.5 mm (1.8 in) |
| 1995 | 57.2 mm (2.3 in) |
| 1996 | 85.3 mm (3.4 in) |
| 1997 | 45.8 mm (1.8 in) |
| 1998 | 51.9 mm (2.0 in) |
| 1999 | 80.9 mm (3.2 in) |
| 2000 | 92.3 mm (3.6 in) |
| 2001 | 35.1 mm (1.4 in) |
| 2002 | 83.0 mm (3.3 in) |
| 2003 | 151.7 mm (6.0 in) |
| 2005 | 35.3 mm (1.4 in) |
| 2006 | 63.2 mm (2.5 in) |
| 2007 | 81.8 mm (3.2 in) |
| 2008 | 85.1 mm (3.4 in) |
| 2009 | 132.7 mm (5.2 in) |
| 2010 | 103.4 mm (4.1 in) |
| 2011 | 59.3 mm (2.3 in) |
| 2012 | 35.3 mm (1.4 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1963 | 21 days |
| 1964 | 90 days |
| 1965 | 71 days |
| 1966 | 53 days |
| 1967 | 55 days |
| 1968 | 60 days |
| 1969 | 128 days |
| 1970 | 90 days |
| 1971 | 132 days |
| 1972 | 148 days |
| 1973 | 70 days |
| 1974 | 137 days |
| 1975 | 136 days |
| 1976 | 163 days |
| 1977 | 151 days |
| 1978 | 140 days |
| 1979 | 132 days |
| 1980 | 158 days |
| 1981 | 110 days |
| 1982 | 111 days |
| 1983 | 129 days |
| 1984 | 106 days |
| 1985 | 44 days |
| 1987 | 53 days |
| 1988 | 95 days |
| 1989 | 89 days |
| 1990 | 78 days |
| 1991 | 123 days |
| 1992 | 38 days |
| 1993 | 110 days |
| 1994 | 55 days |
| 1995 | 95 days |
| 1996 | 111 days |
| 1997 | 39 days |
| 1998 | 111 days |
| 1999 | 155 days |
| 2000 | 57 days |
| 2001 | 88 days |
| 2002 | 50 days |
| 2003 | 82 days |
| 2005 | 42 days |
| 2006 | 76 days |
| 2007 | 93 days |
| 2008 | 40 days |
| 2009 | 72 days |
| 2010 | 96 days |
| 2011 | 90 days |
| 2012 | 49 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
24 years with a frostAcross 24 years with a frost, the median last spring frost at Juan Aldama falls on 6 March and the median first autumn frost on 21 November, which leaves a median of 277 days between them.
| Measure | Median, all years | Earliest period | Recent period (1965 to 2007) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 6 March | n/a | 6 March | n/a | n/a |
| First autumn frost | 21 November | n/a | 21 November | n/a | n/a |
| Growing days | 277 days | n/a | 277 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
39 years, 1964 to 2010A day with at least 41.9 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 98.4 mm (3.9 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 41.9 mm (1.6 in) | |
| 5 years | 56.7 mm (2.2 in) | |
| 10 years | 66.6 mm (2.6 in) | |
| 25 years | 79.3 mm (3.1 in) | |
| 50 years | 88.8 mm (3.5 in) | Longer than the 39 years of record |
| 100 years | 98.4 mm (3.9 in) | Longer than the 39 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, 39 years of values from 1964 to 2010.
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: 79.8 mm (3.1 in) in 1976; 78.5 mm (3.1 in) in 1981; 74.4 mm (2.9 in) in 1983.
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).