Los Pilares Weather Records (MXN00024038)
Record envelope, standing records and threshold days for Los Pilares (MXN00024038), Mexico, with 48 years of record.
Key Facts for Los Pilares
- Los Pilares (MXN00024038) is a weather station in Mexico at 22.45 latitude and -101.08 longitude, 1,973 m (6,473 ft) above sea level.
- The station reports from 1962 to 2009, 48 years of record.
- 1,464 records set at Los Pilares still stand.
- Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
- Los Pilares tied a monthly record low minimum temperature of 1.7 C (35.1 F) on 30 September 2009.
About the Station
- Location: Mexico, 22.45 latitude, -101.08 longitude.
- Elevation: 1,973 m (6,473 ft).
- Period of record: 1962 to 2009, 48 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 | 36.7 C (98.1 F) | -6.1 C (21.0 F) | n/a | n/a |
| Feb | 35.0 C (95.0 F) | -6.7 C (19.9 F) | n/a | n/a |
| Mar | 38.9 C (102.0 F) | -5.0 C (23.0 F) | n/a | n/a |
| Apr | 43.3 C (109.9 F) | -2.2 C (28.0 F) | n/a | n/a |
| May | 41.7 C (107.1 F) | 4.4 C (39.9 F) | n/a | n/a |
| Jun | 40.0 C (104.0 F) | 6.1 C (43.0 F) | n/a | n/a |
| Jul | 38.9 C (102.0 F) | 7.8 C (46.0 F) | n/a | n/a |
| Aug | 38.3 C (100.9 F) | 7.2 C (45.0 F) | n/a | n/a |
| Sep | 40.0 C (104.0 F) | 1.7 C (35.1 F) | n/a | n/a |
| Oct | 40.0 C (104.0 F) | -4.4 C (24.1 F) | n/a | n/a |
| Nov | 36.1 C (97.0 F) | -4.4 C (24.1 F) | n/a | n/a |
| Dec | 32.8 C (91.0 F) | -7.2 C (19.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1962 | 5 |
| 1963 | 18 |
| 1964 | 50 |
| 1965 | 34 |
| 1966 | 37 |
| 1967 | 38 |
| 1968 | 31 |
| 1969 | 67 |
| 1970 | 51 |
| 1971 | 45 |
| 1972 | 47 |
| 1973 | 80 |
| 1974 | 50 |
| 1975 | 43 |
| 1976 | 44 |
| 1977 | 124 |
| 1978 | 34 |
| 1979 | 41 |
| 1980 | 31 |
| 1981 | 6 |
| 1982 | 8 |
| 1983 | 36 |
| 1984 | 41 |
| 1985 | 28 |
| 1986 | 17 |
| 1987 | 35 |
| 1988 | 21 |
| 1989 | 43 |
| 1990 | 16 |
| 1991 | 30 |
| 1992 | 31 |
| 1993 | 17 |
| 1994 | 16 |
| 1995 | 16 |
| 1996 | 18 |
| 1997 | 16 |
| 1998 | 24 |
| 1999 | 21 |
| 2000 | 15 |
| 2001 | 20 |
| 2002 | 15 |
| 2003 | 25 |
| 2004 | 17 |
| 2005 | 9 |
| 2006 | 16 |
| 2007 | 13 |
| 2008 | 22 |
| 2009 | 2 |
All-Time Record Progression
2 new records| Date | Kind | Detail |
|---|---|---|
| 1999-02-14 | Record low minimum temperature | Record low minimum temperature -6.7 C (19.9 F) |
| 2003-12-19 | Record low minimum temperature | Record low minimum temperature -7.2 C (19.0 F) |
Wettest Day of Each Month
May: 81.3 mm (3.2 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 45.2 mm (1.8 in) | 30 January 1984 |
| Feb | 30.0 mm (1.2 in) | 25 February 2005 |
| Mar | 33.8 mm (1.3 in) | 23 March 1967 |
| Apr | 42.9 mm (1.7 in) | 1 April 1992 |
| May | 81.3 mm (3.2 in) | 20 May 1982 |
| Jun | 64.8 mm (2.6 in) | 3 June 1979 |
| Jul | 73.9 mm (2.9 in) | 21 July 1997 |
| Aug | 63.8 mm (2.5 in) | 2 August 2005 |
| Sep | 71.4 mm (2.8 in) | 26 September 1965 |
| Oct | 68.3 mm (2.7 in) | 8 October 1994 |
| Nov | 20.1 mm (0.8 in) | 18 November 1976 |
| Dec | 33.3 mm (1.3 in) | 24 December 1980 |
Period of Record Coverage
1962 to 2009| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1962 | 69 | 19% | No |
| 1963 | 335 | 92% | Yes |
| 1964 | 365 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 362 | 99% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 365 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 362 | 99% | 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 | 365 | 100% | Yes |
| 1979 | 333 | 91% | Yes |
| 1980 | 244 | 67% | No |
| 1981 | 247 | 68% | No |
| 1982 | 334 | 92% | Yes |
| 1983 | 364 | 100% | Yes |
| 1984 | 362 | 99% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 273 | 75% | No |
| 1987 | 364 | 100% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 364 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 365 | 100% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 364 | 100% | Yes |
| 1996 | 366 | 100% | Yes |
| 1997 | 302 | 83% | No |
| 1998 | 365 | 100% | Yes |
| 1999 | 365 | 100% | Yes |
| 2000 | 366 | 100% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 363 | 99% | Yes |
| 2003 | 365 | 100% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 361 | 99% | Yes |
| 2006 | 361 | 99% | Yes |
| 2007 | 289 | 79% | No |
| 2008 | 327 | 89% | No |
| 2009 | 73 | 20% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 30 September 2009 | Los Pilares, MX | monthly low min (Tie) | 1.7 C (35.1 F) | tie | 20 years | 5 of 100 (Routine) |
| 4 August 2009 | Los Pilares, MX | daily low min (Tie) | 10.0 C (50.0 F) | tie | 0 years | 1 of 100 (Routine) |
| 5 July 2009 | Los Pilares, MX | daily high max | 35.6 C (96.1 F) | 1.7 C (3.1 F) | 32 years | 18 of 100 (Routine) |
| 14 June 2009 | Los Pilares, MX | daily rain (Tie) | 54.9 mm (2.2 in) | tie | 2 years | 1 of 100 (Routine) |
| 13 June 2009 | Los Pilares, MX | daily low min (Tie) | 10.0 C (50.0 F) | tie | 14 years | 2 of 100 (Routine) |
| 11 June 2009 | Los Pilares, MX | daily low min (Tie) | 10.0 C (50.0 F) | tie | 20 years | 2 of 100 (Routine) |
| 24 May 2009 | Los Pilares, MX | daily rain (Tie) | 14.0 mm (0.6 in) | tie | 44 years | 4 of 100 (Routine) |
| 27 January 2009 | Los Pilares, MX | daily high max (Tie) | 30.6 C (87.1 F) | tie | 40 years | 4 of 100 (Routine) |
| 11 January 2009 | Los Pilares, MX | daily high max (Tie) | 30.0 C (86.0 F) | tie | 35 years | 3 of 100 (Routine) |
| 9 January 2009 | Los Pilares, MX | daily high max (Tie) | 30.6 C (87.1 F) | tie | 37 years | 3 of 100 (Routine) |
| 13 December 2008 | Los Pilares, MX | daily low min | -4.4 C (24.1 F) | 4.4 C (7.9 F) | 42 years | 27 of 100 (Routine) |
| 12 December 2008 | Los Pilares, MX | daily low min | -5.0 C (23.0 F) | 3.9 C (7.0 F) | 42 years | 26 of 100 (Routine) |
| 4 December 2008 | Los Pilares, MX | daily low min (Tie) | 0.6 C (33.1 F) | tie | 5 years | 1 of 100 (Routine) |
| 3 December 2008 | Los Pilares, MX | daily low min | -2.2 C (28.0 F) | 3.3 C (5.9 F) | 23 years | 18 of 100 (Routine) |
| 1 December 2008 | Los Pilares, MX | daily low min | -2.2 C (28.0 F) | 2.8 C (5.0 F) | 42 years | 23 of 100 (Routine) |
| 25 November 2008 | Los Pilares, MX | daily low max | 18.9 C (66.0 F) | 1.1 C (2.0 F) | 36 years | 16 of 100 (Routine) |
| 22 November 2008 | Los Pilares, MX | daily low max | 15.6 C (60.1 F) | 1.1 C (2.0 F) | 32 years | 15 of 100 (Routine) |
| 21 November 2008 | Los Pilares, MX | daily low max | 12.8 C (55.0 F) | 1.1 C (2.0 F) | 8 years | 8 of 100 (Routine) |
| 20 November 2008 | Los Pilares, MX | daily low min | -1.1 C (30.0 F) | 3.9 C (7.0 F) | 6 years | 15 of 100 (Routine) |
| 19 November 2008 | Los Pilares, MX | daily low min | -2.2 C (28.0 F) | 3.3 C (5.9 F) | 6 years | 13 of 100 (Routine) |
Climate Trend
37 complete years, 1964 to 2006| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1964 | 20.0 C | +0.89 C |
| 1965 | 20.0 C | +0.95 C |
| 1966 | 19.5 C | +0.37 C |
| 1967 | 19.8 C | +0.71 C |
| 1968 | 19.9 C | +0.80 C |
| 1969 | 20.9 C | +1.77 C |
| 1970 | 20.1 C | +0.99 C |
| 1971 | 20.3 C | +1.17 C |
| 1972 | 21.0 C | +1.88 C |
| 1973 | 20.9 C | +1.84 C |
| 1974 | 20.7 C | +1.59 C |
| 1975 | 21.1 C | +1.99 C |
| 1976 | 21.0 C | +1.91 C |
| 1977 | 21.2 C | +2.11 C |
| 1978 | 18.7 C | -0.36 C |
| 1983 | 17.9 C | -1.20 C |
| 1984 | 17.6 C | -1.48 C |
| 1985 | 18.1 C | -1.01 C |
| 1987 | 17.6 C | -1.45 C |
| 1988 | 18.0 C | -1.13 C |
| 1989 | 18.1 C | -0.98 C |
| 1990 | 18.5 C | -0.60 C |
| 1991 | 18.5 C | -0.63 C |
| 1992 | 17.7 C | -1.37 C |
| 1993 | 18.2 C | -0.86 C |
| 1994 | 18.9 C | -0.18 C |
| 1995 | 19.0 C | -0.14 C |
| 1996 | 18.3 C | -0.76 C |
| 1998 | 19.1 C | -0.01 C |
| 1999 | 17.9 C | -1.15 C |
| 2000 | 18.6 C | -0.52 C |
| 2001 | 18.0 C | -1.09 C |
| 2002 | 18.3 C | -0.84 C |
| 2003 | 18.3 C | -0.81 C |
| 2004 | 17.9 C | -1.16 C |
| 2005 | 18.5 C | -0.63 C |
| 2006 | 18.5 C | -0.61 C |
The annual mean temperature here has fallen by 0.6 C (0.4 to 0.8) per decade over 1964 to 2006. In Fahrenheit: 1.1 F (0.8 to 1.5) per decade. The slope is a straight line fitted to 37 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.6 C (-0.8 to -0.4) per decade | -1.1 F (-1.5 to -0.8) per decade | 1964 to 2006 | 37 | Fall |
| Mean daily maximum | -0.6 C (-0.8 to -0.3) per decade | -1.0 F (-1.5 to -0.5) per decade | 1964 to 2006 | 37 | Fall |
| Mean daily minimum | -0.7 C (-0.9 to -0.5) per decade | -1.3 F (-1.6 to -0.9) per decade | 1964 to 2006 | 37 | 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
1962 to 2009| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 43.3 C (109.9 F) | 1978 | 37.8 C (100.0 F) | 48 |
| Coldest night (TNn) | -7.2 C (19.0 F) | 2003 | -4.4 C (24.1 F) | 48 |
| Wettest day (Rx1day) | 81.3 mm (3.2 in) | 1982 | 42.9 mm (1.7 in) | 48 |
| Wettest five days (Rx5day) | 165.9 mm (6.5 in) | 1997 | 71.3 mm (2.8 in) | 48 |
| Longest dry spell (CDD) | 146 days | 1998 | 64 days | 48 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1962 | 33.9 C (93.0 F) |
| 1963 | 37.8 C (100.0 F) |
| 1964 | 38.9 C (102.0 F) |
| 1965 | 37.8 C (100.0 F) |
| 1966 | 37.8 C (100.0 F) |
| 1967 | 40.0 C (104.0 F) |
| 1968 | 38.9 C (102.0 F) |
| 1969 | 40.0 C (104.0 F) |
| 1970 | 39.4 C (102.9 F) |
| 1971 | 38.9 C (102.0 F) |
| 1972 | 38.9 C (102.0 F) |
| 1973 | 42.8 C (109.0 F) |
| 1974 | 40.0 C (104.0 F) |
| 1975 | 40.0 C (104.0 F) |
| 1976 | 38.3 C (100.9 F) |
| 1977 | 40.6 C (105.1 F) |
| 1978 | 43.3 C (109.9 F) |
| 1979 | 35.0 C (95.0 F) |
| 1980 | 35.0 C (95.0 F) |
| 1981 | 35.0 C (95.0 F) |
| 1982 | 37.2 C (99.0 F) |
| 1983 | 40.0 C (104.0 F) |
| 1984 | 35.6 C (96.1 F) |
| 1985 | 36.1 C (97.0 F) |
| 1986 | 35.6 C (96.1 F) |
| 1987 | 34.4 C (93.9 F) |
| 1988 | 35.0 C (95.0 F) |
| 1989 | 38.9 C (102.0 F) |
| 1990 | 39.4 C (102.9 F) |
| 1991 | 37.8 C (100.0 F) |
| 1992 | 35.0 C (95.0 F) |
| 1993 | 37.8 C (100.0 F) |
| 1994 | 36.1 C (97.0 F) |
| 1995 | 37.2 C (99.0 F) |
| 1996 | 38.3 C (100.9 F) |
| 1997 | 37.2 C (99.0 F) |
| 1998 | 40.0 C (104.0 F) |
| 1999 | 37.8 C (100.0 F) |
| 2000 | 36.1 C (97.0 F) |
| 2001 | 36.1 C (97.0 F) |
| 2002 | 37.8 C (100.0 F) |
| 2003 | 38.9 C (102.0 F) |
| 2004 | 36.1 C (97.0 F) |
| 2005 | 37.8 C (100.0 F) |
| 2006 | 37.2 C (99.0 F) |
| 2007 | 33.9 C (93.0 F) |
| 2008 | 37.8 C (100.0 F) |
| 2009 | 35.6 C (96.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1962 | -1.1 C (30.0 F) |
| 1963 | -3.3 C (26.1 F) |
| 1964 | -4.4 C (24.1 F) |
| 1965 | -2.2 C (28.0 F) |
| 1966 | -2.2 C (28.0 F) |
| 1967 | -4.4 C (24.1 F) |
| 1968 | 0.0 C (32.0 F) |
| 1969 | -4.4 C (24.1 F) |
| 1970 | -4.4 C (24.1 F) |
| 1971 | -5.0 C (23.0 F) |
| 1972 | 0.6 C (33.1 F) |
| 1973 | -3.3 C (26.1 F) |
| 1974 | -2.2 C (28.0 F) |
| 1975 | -2.8 C (27.0 F) |
| 1976 | -3.9 C (25.0 F) |
| 1977 | -2.2 C (28.0 F) |
| 1978 | -4.4 C (24.1 F) |
| 1979 | -2.2 C (28.0 F) |
| 1980 | 0.0 C (32.0 F) |
| 1981 | -2.2 C (28.0 F) |
| 1982 | -3.3 C (26.1 F) |
| 1983 | -4.4 C (24.1 F) |
| 1984 | -5.0 C (23.0 F) |
| 1985 | -3.3 C (26.1 F) |
| 1986 | -5.0 C (23.0 F) |
| 1987 | -5.0 C (23.0 F) |
| 1988 | -5.6 C (21.9 F) |
| 1989 | -5.6 C (21.9 F) |
| 1990 | -5.0 C (23.0 F) |
| 1991 | -4.4 C (24.1 F) |
| 1992 | -2.2 C (28.0 F) |
| 1993 | -4.4 C (24.1 F) |
| 1994 | -3.9 C (25.0 F) |
| 1995 | -3.3 C (26.1 F) |
| 1996 | -3.9 C (25.0 F) |
| 1997 | -5.0 C (23.0 F) |
| 1998 | -4.4 C (24.1 F) |
| 1999 | -6.7 C (19.9 F) |
| 2000 | -5.0 C (23.0 F) |
| 2001 | -3.3 C (26.1 F) |
| 2002 | -4.4 C (24.1 F) |
| 2003 | -7.2 C (19.0 F) |
| 2004 | -4.4 C (24.1 F) |
| 2005 | -5.6 C (21.9 F) |
| 2006 | -7.2 C (19.0 F) |
| 2007 | -4.4 C (24.1 F) |
| 2008 | -5.0 C (23.0 F) |
| 2009 | -1.1 C (30.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1962 | 0.0 mm (0.00 in) |
| 1963 | 39.9 mm (1.6 in) |
| 1964 | 26.4 mm (1.0 in) |
| 1965 | 71.4 mm (2.8 in) |
| 1966 | 34.8 mm (1.4 in) |
| 1967 | 39.4 mm (1.6 in) |
| 1968 | 35.8 mm (1.4 in) |
| 1969 | 24.9 mm (1.0 in) |
| 1970 | 29.0 mm (1.1 in) |
| 1971 | 33.8 mm (1.3 in) |
| 1972 | 37.8 mm (1.5 in) |
| 1973 | 34.8 mm (1.4 in) |
| 1974 | 25.9 mm (1.0 in) |
| 1975 | 31.0 mm (1.2 in) |
| 1976 | 39.4 mm (1.6 in) |
| 1977 | 42.9 mm (1.7 in) |
| 1978 | 51.3 mm (2.0 in) |
| 1979 | 64.8 mm (2.6 in) |
| 1980 | 33.3 mm (1.3 in) |
| 1981 | 36.1 mm (1.4 in) |
| 1982 | 81.3 mm (3.2 in) |
| 1983 | 40.4 mm (1.6 in) |
| 1984 | 45.2 mm (1.8 in) |
| 1985 | 62.5 mm (2.5 in) |
| 1986 | 47.0 mm (1.9 in) |
| 1987 | 47.8 mm (1.9 in) |
| 1988 | 53.3 mm (2.1 in) |
| 1989 | 49.0 mm (1.9 in) |
| 1990 | 26.9 mm (1.1 in) |
| 1991 | 42.4 mm (1.7 in) |
| 1992 | 42.9 mm (1.7 in) |
| 1993 | 44.5 mm (1.8 in) |
| 1994 | 68.3 mm (2.7 in) |
| 1995 | 42.9 mm (1.7 in) |
| 1996 | 53.8 mm (2.1 in) |
| 1997 | 73.9 mm (2.9 in) |
| 1998 | 39.9 mm (1.6 in) |
| 1999 | 40.9 mm (1.6 in) |
| 2000 | 26.9 mm (1.1 in) |
| 2001 | 51.3 mm (2.0 in) |
| 2002 | 46.5 mm (1.8 in) |
| 2003 | 45.0 mm (1.8 in) |
| 2004 | 59.9 mm (2.4 in) |
| 2005 | 63.8 mm (2.5 in) |
| 2006 | 54.9 mm (2.2 in) |
| 2007 | 54.9 mm (2.2 in) |
| 2008 | 68.8 mm (2.7 in) |
| 2009 | 54.9 mm (2.2 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1962 | 0.0 mm (0.00 in) |
| 1963 | 41.6 mm (1.6 in) |
| 1964 | 54.6 mm (2.1 in) |
| 1965 | 108.0 mm (4.3 in) |
| 1966 | 61.2 mm (2.4 in) |
| 1967 | 113.9 mm (4.5 in) |
| 1968 | 59.5 mm (2.3 in) |
| 1969 | 30.4 mm (1.2 in) |
| 1970 | 99.1 mm (3.9 in) |
| 1971 | 87.3 mm (3.4 in) |
| 1972 | 45.7 mm (1.8 in) |
| 1973 | 92.5 mm (3.6 in) |
| 1974 | 40.0 mm (1.6 in) |
| 1975 | 122.4 mm (4.8 in) |
| 1976 | 105.0 mm (4.1 in) |
| 1977 | 73.9 mm (2.9 in) |
| 1978 | 96.8 mm (3.8 in) |
| 1979 | 79.6 mm (3.1 in) |
| 1980 | 34.3 mm (1.4 in) |
| 1981 | 44.2 mm (1.7 in) |
| 1982 | 99.6 mm (3.9 in) |
| 1983 | 56.7 mm (2.2 in) |
| 1984 | 49.7 mm (2.0 in) |
| 1985 | 105.4 mm (4.1 in) |
| 1986 | 90.4 mm (3.6 in) |
| 1987 | 78.1 mm (3.1 in) |
| 1988 | 110.8 mm (4.4 in) |
| 1989 | 49.0 mm (1.9 in) |
| 1990 | 58.2 mm (2.3 in) |
| 1991 | 78.7 mm (3.1 in) |
| 1992 | 56.7 mm (2.2 in) |
| 1993 | 63.0 mm (2.5 in) |
| 1994 | 105.9 mm (4.2 in) |
| 1995 | 114.6 mm (4.5 in) |
| 1996 | 64.0 mm (2.5 in) |
| 1997 | 165.9 mm (6.5 in) |
| 1998 | 42.6 mm (1.7 in) |
| 1999 | 51.6 mm (2.0 in) |
| 2000 | 32.8 mm (1.3 in) |
| 2001 | 96.3 mm (3.8 in) |
| 2002 | 61.5 mm (2.4 in) |
| 2003 | 49.6 mm (2.0 in) |
| 2004 | 115.0 mm (4.5 in) |
| 2005 | 95.9 mm (3.8 in) |
| 2006 | 73.7 mm (2.9 in) |
| 2007 | 73.7 mm (2.9 in) |
| 2008 | 68.8 mm (2.7 in) |
| 2009 | 54.9 mm (2.2 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1962 | 70 days |
| 1963 | 77 days |
| 1964 | 78 days |
| 1965 | 43 days |
| 1966 | 62 days |
| 1967 | 49 days |
| 1968 | 50 days |
| 1969 | 91 days |
| 1970 | 77 days |
| 1971 | 63 days |
| 1972 | 70 days |
| 1973 | 64 days |
| 1974 | 68 days |
| 1975 | 88 days |
| 1976 | 72 days |
| 1977 | 79 days |
| 1978 | 42 days |
| 1979 | 71 days |
| 1980 | 39 days |
| 1981 | 36 days |
| 1982 | 55 days |
| 1983 | 127 days |
| 1984 | 33 days |
| 1985 | 68 days |
| 1986 | 52 days |
| 1987 | 55 days |
| 1988 | 82 days |
| 1989 | 56 days |
| 1990 | 45 days |
| 1991 | 87 days |
| 1992 | 48 days |
| 1993 | 52 days |
| 1994 | 54 days |
| 1995 | 100 days |
| 1996 | 70 days |
| 1997 | 37 days |
| 1998 | 146 days |
| 1999 | 80 days |
| 2000 | 63 days |
| 2001 | 104 days |
| 2002 | 61 days |
| 2003 | 65 days |
| 2004 | 77 days |
| 2005 | 65 days |
| 2006 | 50 days |
| 2007 | 45 days |
| 2008 | 64 days |
| 2009 | 19 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 Los Pilares falls on 2 March and the median first autumn frost on 27 November, which leaves a median of 274 days between them.
| Measure | Median, all years | Earliest period | Recent period (1965 to 2006) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 2 March | n/a | 2 March | n/a | n/a |
| First autumn frost | 27 November | n/a | 27 November | n/a | n/a |
| Growing days | 274 days | n/a | 274 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
42 years, 1963 to 2008A day with at least 43.9 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 86.5 mm (3.4 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 43.9 mm (1.7 in) | |
| 5 years | 56.5 mm (2.2 in) | |
| 10 years | 64.3 mm (2.5 in) | |
| 25 years | 73.7 mm (2.9 in) | |
| 50 years | 80.3 mm (3.2 in) | Longer than the 42 years of record |
| 100 years | 86.5 mm (3.4 in) | Longer than the 42 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, 42 years of values from 1963 to 2008.
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: 81.3 mm (3.2 in) in 1982; 71.4 mm (2.8 in) in 1965; 68.8 mm (2.7 in) in 2008.
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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).