San Pedro Weather Records (MXN00005036)
Record envelope, standing records and threshold days for San Pedro (MXN00005036), Mexico, with 51 years of record.
Key Facts for San Pedro
- San Pedro (MXN00005036) is a weather station in Mexico at 25.75 latitude and -102.98 longitude, 1,100 m (3,608 ft) above sea level.
- The station reports from 1963 to 2013, 51 years of record.
- 1,464 records set at San Pedro still stand.
- Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
- San Pedro set a daily record high minimum temperature of 15.0 C (59.0 F) on 29 January 2013.
About the Station
- Location: Mexico, 25.75 latitude, -102.98 longitude.
- Elevation: 1,100 m (3,608 ft).
- Period of record: 1963 to 2013, 51 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 | 34.4 C (93.9 F) | -10.0 C (14.0 F) | n/a | n/a |
| Feb | 37.8 C (100.0 F) | -9.4 C (15.1 F) | n/a | n/a |
| Mar | 39.4 C (102.9 F) | -4.4 C (24.1 F) | n/a | n/a |
| Apr | 43.9 C (111.0 F) | -2.2 C (28.0 F) | n/a | n/a |
| May | 41.7 C (107.1 F) | 5.6 C (42.1 F) | n/a | n/a |
| Jun | 45.0 C (113.0 F) | 10.0 C (50.0 F) | n/a | n/a |
| Jul | 43.3 C (109.9 F) | 10.0 C (50.0 F) | n/a | n/a |
| Aug | 43.9 C (111.0 F) | 10.0 C (50.0 F) | n/a | n/a |
| Sep | 42.8 C (109.0 F) | 7.8 C (46.0 F) | n/a | n/a |
| Oct | 40.0 C (104.0 F) | 0.0 C (32.0 F) | n/a | n/a |
| Nov | 37.2 C (99.0 F) | -4.4 C (24.1 F) | n/a | n/a |
| Dec | 35.0 C (95.0 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 | 15 |
| 1964 | 225 |
| 1965 | 127 |
| 1966 | 33 |
| 1967 | 21 |
| 1968 | 26 |
| 1969 | 32 |
| 1970 | 27 |
| 1971 | 29 |
| 1972 | 23 |
| 1973 | 37 |
| 1974 | 18 |
| 1975 | 29 |
| 1976 | 20 |
| 1977 | 12 |
| 1978 | 27 |
| 1979 | 10 |
| 1980 | 18 |
| 1981 | 9 |
| 1982 | 27 |
| 1983 | 16 |
| 1984 | 21 |
| 1985 | 11 |
| 1986 | 10 |
| 1987 | 17 |
| 1988 | 13 |
| 1989 | 31 |
| 1990 | 23 |
| 1991 | 14 |
| 1992 | 28 |
| 1993 | 20 |
| 1994 | 19 |
| 1995 | 20 |
| 1996 | 18 |
| 1997 | 19 |
| 1998 | 18 |
| 1999 | 12 |
| 2000 | 14 |
| 2001 | 21 |
| 2002 | 29 |
| 2003 | 38 |
| 2004 | 25 |
| 2005 | 27 |
| 2006 | 44 |
| 2007 | 29 |
| 2008 | 46 |
| 2009 | 40 |
| 2010 | 6 |
| 2011 | 44 |
| 2012 | 22 |
| 2013 | 4 |
All-Time Record Progression
3 new records| Date | Kind | Detail |
|---|---|---|
| 1995-09-13 | Record daily precipitation | Record daily precipitation 79.8 mm (3.1 in) |
| 1997-12-12 | Record low maximum temperature | Record low maximum temperature 0.6 C (33.1 F) |
| 2000-06-17 | Record daily precipitation | Record daily precipitation 105.9 mm (4.2 in) |
Wettest Day of Each Month
Jun: 105.9 mm (4.2 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 24.9 mm (1.0 in) | 30 January 1984 |
| Feb | 16.8 mm (0.7 in) | 25 February 2005 |
| Mar | 19.8 mm (0.8 in) | 3 March 1968 |
| Apr | 26.4 mm (1.0 in) | 14 April 1981 |
| May | 69.9 mm (2.8 in) | 2 May 1981 |
| Jun | 105.9 mm (4.2 in) | 17 June 2000 |
| Jul | 64.8 mm (2.6 in) | 21 July 2005 |
| Aug | 54.9 mm (2.2 in) | 13 August 1990 |
| Sep | 79.8 mm (3.1 in) | 13 September 1995 |
| Oct | 37.8 mm (1.5 in) | 11 October 2003 |
| Nov | 26.4 mm (1.0 in) | 22 November 1972 |
| Dec | 24.9 mm (1.0 in) | 18 December 1975 |
Period of Record Coverage
1963 to 2013| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1963 | 153 | 42% | No |
| 1964 | 335 | 92% | Yes |
| 1965 | 364 | 100% | Yes |
| 1966 | 364 | 100% | Yes |
| 1967 | 363 | 99% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 302 | 83% | No |
| 1970 | 364 | 100% | Yes |
| 1971 | 363 | 99% | Yes |
| 1972 | 363 | 99% | Yes |
| 1973 | 364 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 363 | 99% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 363 | 99% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 322 | 88% | No |
| 1983 | 365 | 100% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 364 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 365 | 100% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 364 | 100% | Yes |
| 1992 | 364 | 99% | Yes |
| 1993 | 365 | 100% | Yes |
| 1994 | 364 | 100% | Yes |
| 1995 | 364 | 100% | Yes |
| 1996 | 366 | 100% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 365 | 100% | Yes |
| 1999 | 365 | 100% | Yes |
| 2000 | 365 | 100% | Yes |
| 2001 | 359 | 98% | Yes |
| 2002 | 365 | 100% | Yes |
| 2003 | 364 | 100% | Yes |
| 2004 | 356 | 97% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 359 | 98% | Yes |
| 2007 | 309 | 85% | No |
| 2008 | 363 | 99% | Yes |
| 2009 | 363 | 99% | Yes |
| 2010 | 362 | 99% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 31 | 8% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 29 January 2013 | San Pedro, MX | daily high min | 15.0 C (59.0 F) | 3.3 C (5.9 F) | 5 years | 15 of 100 (Routine) |
| 26 January 2013 | San Pedro, MX | daily high max (Tie) | 30.0 C (86.0 F) | tie | 41 years | 4 of 100 (Routine) |
| 22 January 2013 | San Pedro, MX | daily high min | 10.6 C (51.1 F) | 0.6 C (1.1 F) | 33 years | 15 of 100 (Routine) |
| 16 January 2013 | San Pedro, MX | daily low max | 10.6 C (51.1 F) | 4.4 C (7.9 F) | 28 years | 21 of 100 (Routine) |
| 12 January 2013 | San Pedro, MX | monthly high min | 17.8 C (64.0 F) | 2.2 C (4.0 F) | 24 years | 28 of 100 (Routine) |
| 16 December 2012 | San Pedro, MX | daily high min | 15.0 C (59.0 F) | 3.3 C (5.9 F) | 11 years | 17 of 100 (Routine) |
| 3 December 2012 | San Pedro, MX | daily high min | 11.1 C (52.0 F) | 0.5 C (0.9 F) | 7 years | 8 of 100 (Routine) |
| 24 November 2012 | San Pedro, MX | daily high min | 13.3 C (55.9 F) | 0.5 C (0.9 F) | 22 years | 12 of 100 (Routine) |
| 23 November 2012 | San Pedro, MX | daily high min | 12.8 C (55.0 F) | 0.6 C (1.1 F) | 8 years | 8 of 100 (Routine) |
| 25 October 2012 | San Pedro, MX | daily high min (Tie) | 15.6 C (60.1 F) | tie | 12 years | 2 of 100 (Routine) |
| 24 October 2012 | San Pedro, MX | daily high min (Tie) | 16.1 C (61.0 F) | tie | 20 years | 2 of 100 (Routine) |
| 15 October 2012 | San Pedro, MX | daily high min | 20.0 C (68.0 F) | 1.1 C (2.0 F) | 17 years | 13 of 100 (Routine) |
| 28 September 2012 | San Pedro, MX | daily high min (Tie) | 20.0 C (68.0 F) | tie | 26 years | 3 of 100 (Routine) |
| 21 September 2012 | San Pedro, MX | daily high min (Tie) | 20.0 C (68.0 F) | tie | 43 years | 4 of 100 (Routine) |
| 15 September 2012 | San Pedro, MX | daily rain | 53.8 mm (2.1 in) | 29.9 mm (1.2 in) | 10 years | 33 of 100 (Routine) |
| 14 September 2012 | San Pedro, MX | daily rain | 57.9 mm (2.3 in) | 48.0 mm (1.9 in) | 42 years | 57 of 100 (Notable) |
| 3 September 2012 | San Pedro, MX | daily high min (Tie) | 21.7 C (71.1 F) | tie | 6 years | 1 of 100 (Routine) |
| 1 September 2012 | San Pedro, MX | monthly high min (Tie) | 22.8 C (73.0 F) | tie | 23 years | 5 of 100 (Routine) |
| 31 August 2012 | San Pedro, MX | daily high min | 22.2 C (72.0 F) | 0.5 C (0.9 F) | 31 years | 16 of 100 (Routine) |
| 19 August 2012 | San Pedro, MX | daily high min (Tie) | 21.7 C (71.1 F) | tie | 15 years | 2 of 100 (Routine) |
Climate Trend
45 complete years, 1965 to 2012| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1965 | 19.7 C | -1.33 C |
| 1966 | 20.1 C | -0.89 C |
| 1967 | 20.6 C | -0.41 C |
| 1968 | 20.3 C | -0.68 C |
| 1970 | 20.8 C | -0.18 C |
| 1971 | 21.4 C | +0.41 C |
| 1972 | 21.7 C | +0.75 C |
| 1973 | 20.3 C | -0.71 C |
| 1974 | 21.3 C | +0.36 C |
| 1975 | 20.8 C | -0.23 C |
| 1976 | 19.8 C | -1.21 C |
| 1977 | 21.2 C | +0.23 C |
| 1978 | 21.1 C | +0.08 C |
| 1979 | 20.4 C | -0.56 C |
| 1980 | 20.8 C | -0.16 C |
| 1981 | 20.9 C | -0.04 C |
| 1983 | 20.8 C | -0.14 C |
| 1984 | 20.7 C | -0.31 C |
| 1985 | 20.9 C | -0.05 C |
| 1986 | 20.8 C | -0.22 C |
| 1987 | 20.0 C | -1.03 C |
| 1988 | 20.8 C | -0.23 C |
| 1989 | 21.3 C | +0.29 C |
| 1990 | 21.4 C | +0.46 C |
| 1991 | 20.9 C | -0.05 C |
| 1992 | 20.5 C | -0.53 C |
| 1993 | 21.0 C | -0.03 C |
| 1994 | 21.8 C | +0.86 C |
| 1995 | 21.3 C | +0.31 C |
| 1996 | 21.1 C | +0.08 C |
| 1997 | 20.2 C | -0.78 C |
| 1998 | 21.5 C | +0.54 C |
| 1999 | 21.3 C | +0.30 C |
| 2000 | 21.5 C | +0.52 C |
| 2001 | 21.4 C | +0.45 C |
| 2002 | 21.4 C | +0.39 C |
| 2003 | 21.2 C | +0.22 C |
| 2004 | 21.6 C | +0.61 C |
| 2005 | 22.9 C | +1.89 C |
| 2006 | 21.6 C | +0.66 C |
| 2008 | 19.1 C | -1.91 C |
| 2009 | 20.7 C | -0.29 C |
| 2010 | 21.0 C | -0.03 C |
| 2011 | 22.3 C | +1.36 C |
| 2012 | 22.1 C | +1.10 C |
The annual mean temperature here has risen by 0.2 C (0.1 to 0.4) per decade over 1965 to 2012. In Fahrenheit: 0.4 F (0.1 to 0.6) per decade. The slope is a straight line fitted to 45 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 (0.1 to 0.4) per decade | 0.4 F (0.1 to 0.6) per decade | 1965 to 2012 | 45 | Rise |
| Mean daily maximum | -0.1 C (-0.4 to 0.1) per decade | -0.2 F (-0.6 to 0.3) per decade | 1965 to 2012 | 45 | Not clearly different from zero |
| Mean daily minimum | 0.5 C (0.4 to 0.7) per decade | 1.0 F (0.7 to 1.2) per decade | 1965 to 2012 | 45 | 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
1963 to 2013| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 45.0 C (113.0 F) | 1964 | 40.0 C (104.0 F) | 51 |
| Coldest night (TNn) | -10.0 C (14.0 F) | 1964 | -3.3 C (26.1 F) | 51 |
| Wettest day (Rx1day) | 105.9 mm (4.2 in) | 2000 | 30.0 mm (1.2 in) | 51 |
| Wettest five days (Rx5day) | 123.4 mm (4.9 in) | 2012 | 46.5 mm (1.8 in) | 51 |
| Longest dry spell (CDD) | 365 days | 1971 | 99 days | 51 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1963 | 40.6 C (105.1 F) |
| 1964 | 45.0 C (113.0 F) |
| 1965 | 40.0 C (104.0 F) |
| 1966 | 40.0 C (104.0 F) |
| 1967 | 40.0 C (104.0 F) |
| 1968 | 38.9 C (102.0 F) |
| 1969 | 40.0 C (104.0 F) |
| 1970 | 40.6 C (105.1 F) |
| 1971 | 40.0 C (104.0 F) |
| 1972 | 40.0 C (104.0 F) |
| 1973 | 38.9 C (102.0 F) |
| 1974 | 40.6 C (105.1 F) |
| 1975 | 41.7 C (107.1 F) |
| 1976 | 40.0 C (104.0 F) |
| 1977 | 40.0 C (104.0 F) |
| 1978 | 40.0 C (104.0 F) |
| 1979 | 38.9 C (102.0 F) |
| 1980 | 41.7 C (107.1 F) |
| 1981 | 40.0 C (104.0 F) |
| 1982 | 40.0 C (104.0 F) |
| 1983 | 41.7 C (107.1 F) |
| 1984 | 40.0 C (104.0 F) |
| 1985 | 40.6 C (105.1 F) |
| 1986 | 38.9 C (102.0 F) |
| 1987 | 40.0 C (104.0 F) |
| 1988 | 39.4 C (102.9 F) |
| 1989 | 41.7 C (107.1 F) |
| 1990 | 40.0 C (104.0 F) |
| 1991 | 40.0 C (104.0 F) |
| 1992 | 40.0 C (104.0 F) |
| 1993 | 40.6 C (105.1 F) |
| 1994 | 40.0 C (104.0 F) |
| 1995 | 40.0 C (104.0 F) |
| 1996 | 41.1 C (106.0 F) |
| 1997 | 38.9 C (102.0 F) |
| 1998 | 41.1 C (106.0 F) |
| 1999 | 40.0 C (104.0 F) |
| 2000 | 38.9 C (102.0 F) |
| 2001 | 40.0 C (104.0 F) |
| 2002 | 40.0 C (104.0 F) |
| 2003 | 41.7 C (107.1 F) |
| 2004 | 41.1 C (106.0 F) |
| 2005 | 42.2 C (108.0 F) |
| 2006 | 42.8 C (109.0 F) |
| 2007 | 40.6 C (105.1 F) |
| 2008 | 35.6 C (96.1 F) |
| 2009 | 40.0 C (104.0 F) |
| 2010 | 40.0 C (104.0 F) |
| 2011 | 41.7 C (107.1 F) |
| 2012 | 40.0 C (104.0 F) |
| 2013 | 30.0 C (86.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1963 | -9.4 C (15.1 F) |
| 1964 | -10.0 C (14.0 F) |
| 1965 | -5.0 C (23.0 F) |
| 1966 | -6.1 C (21.0 F) |
| 1967 | -5.0 C (23.0 F) |
| 1968 | -5.0 C (23.0 F) |
| 1969 | -3.3 C (26.1 F) |
| 1970 | -4.4 C (24.1 F) |
| 1971 | -5.0 C (23.0 F) |
| 1972 | -1.7 C (28.9 F) |
| 1973 | -6.1 C (21.0 F) |
| 1974 | -5.0 C (23.0 F) |
| 1975 | -7.2 C (19.0 F) |
| 1976 | -5.0 C (23.0 F) |
| 1977 | -2.2 C (28.0 F) |
| 1978 | -4.4 C (24.1 F) |
| 1979 | -4.4 C (24.1 F) |
| 1980 | -3.3 C (26.1 F) |
| 1981 | -2.2 C (28.0 F) |
| 1982 | -1.1 C (30.0 F) |
| 1983 | -6.1 C (21.0 F) |
| 1984 | -2.2 C (28.0 F) |
| 1985 | -4.4 C (24.1 F) |
| 1986 | -3.3 C (26.1 F) |
| 1987 | -3.3 C (26.1 F) |
| 1988 | -6.1 C (21.0 F) |
| 1989 | -2.8 C (27.0 F) |
| 1990 | -2.2 C (28.0 F) |
| 1991 | 0.0 C (32.0 F) |
| 1992 | -3.3 C (26.1 F) |
| 1993 | 0.0 C (32.0 F) |
| 1994 | -4.4 C (24.1 F) |
| 1995 | 0.0 C (32.0 F) |
| 1996 | -5.0 C (23.0 F) |
| 1997 | -8.3 C (17.1 F) |
| 1998 | -3.3 C (26.1 F) |
| 1999 | -3.3 C (26.1 F) |
| 2000 | -3.3 C (26.1 F) |
| 2001 | -3.3 C (26.1 F) |
| 2002 | -3.3 C (26.1 F) |
| 2003 | -3.3 C (26.1 F) |
| 2004 | -5.0 C (23.0 F) |
| 2005 | 0.0 C (32.0 F) |
| 2006 | 0.0 C (32.0 F) |
| 2007 | 0.0 C (32.0 F) |
| 2008 | 0.0 C (32.0 F) |
| 2009 | -0.6 C (30.9 F) |
| 2010 | -4.4 C (24.1 F) |
| 2011 | -9.4 C (15.1 F) |
| 2012 | 0.0 C (32.0 F) |
| 2013 | -8.3 C (17.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1963 | 10.9 mm (0.4 in) |
| 1964 | 42.9 mm (1.7 in) |
| 1965 | 39.4 mm (1.6 in) |
| 1966 | 63.8 mm (2.5 in) |
| 1967 | 25.9 mm (1.0 in) |
| 1968 | 41.9 mm (1.6 in) |
| 1969 | 26.4 mm (1.0 in) |
| 1970 | 21.8 mm (0.9 in) |
| 1971 | 0.0 mm (0.00 in) |
| 1972 | 56.9 mm (2.2 in) |
| 1973 | 31.5 mm (1.2 in) |
| 1974 | 22.9 mm (0.9 in) |
| 1975 | 46.5 mm (1.8 in) |
| 1976 | 20.8 mm (0.8 in) |
| 1977 | 23.4 mm (0.9 in) |
| 1978 | 52.3 mm (2.1 in) |
| 1979 | 46.0 mm (1.8 in) |
| 1980 | 27.4 mm (1.1 in) |
| 1981 | 69.9 mm (2.8 in) |
| 1982 | 49.8 mm (2.0 in) |
| 1983 | 21.8 mm (0.9 in) |
| 1984 | 26.9 mm (1.1 in) |
| 1985 | 26.9 mm (1.1 in) |
| 1986 | 58.9 mm (2.3 in) |
| 1987 | 33.3 mm (1.3 in) |
| 1988 | 25.4 mm (1.0 in) |
| 1989 | 19.8 mm (0.8 in) |
| 1990 | 54.9 mm (2.2 in) |
| 1991 | 30.0 mm (1.2 in) |
| 1992 | 67.8 mm (2.7 in) |
| 1993 | 38.9 mm (1.5 in) |
| 1994 | 14.0 mm (0.6 in) |
| 1995 | 79.8 mm (3.1 in) |
| 1996 | 24.9 mm (1.0 in) |
| 1997 | 30.0 mm (1.2 in) |
| 1998 | 20.8 mm (0.8 in) |
| 1999 | 38.9 mm (1.5 in) |
| 2000 | 105.9 mm (4.2 in) |
| 2001 | 21.8 mm (0.9 in) |
| 2002 | 59.9 mm (2.4 in) |
| 2003 | 37.8 mm (1.5 in) |
| 2004 | 39.9 mm (1.6 in) |
| 2005 | 64.8 mm (2.6 in) |
| 2006 | 33.3 mm (1.3 in) |
| 2007 | 19.3 mm (0.8 in) |
| 2008 | 10.4 mm (0.4 in) |
| 2009 | 3.8 mm (0.15 in) |
| 2010 | 10.9 mm (0.4 in) |
| 2011 | 4.3 mm (0.17 in) |
| 2012 | 57.9 mm (2.3 in) |
| 2013 | 0.0 mm (0.00 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1963 | 16.5 mm (0.6 in) |
| 1964 | 45.7 mm (1.8 in) |
| 1965 | 47.0 mm (1.9 in) |
| 1966 | 81.8 mm (3.2 in) |
| 1967 | 27.7 mm (1.1 in) |
| 1968 | 68.8 mm (2.7 in) |
| 1969 | 43.2 mm (1.7 in) |
| 1970 | 45.5 mm (1.8 in) |
| 1971 | 0.0 mm (0.00 in) |
| 1972 | 68.1 mm (2.7 in) |
| 1973 | 74.7 mm (2.9 in) |
| 1974 | 30.8 mm (1.2 in) |
| 1975 | 46.5 mm (1.8 in) |
| 1976 | 50.5 mm (2.0 in) |
| 1977 | 43.0 mm (1.7 in) |
| 1978 | 68.8 mm (2.7 in) |
| 1979 | 93.5 mm (3.7 in) |
| 1980 | 31.3 mm (1.2 in) |
| 1981 | 78.8 mm (3.1 in) |
| 1982 | 59.7 mm (2.4 in) |
| 1983 | 39.6 mm (1.6 in) |
| 1984 | 35.1 mm (1.4 in) |
| 1985 | 36.8 mm (1.4 in) |
| 1986 | 85.6 mm (3.4 in) |
| 1987 | 62.0 mm (2.4 in) |
| 1988 | 50.6 mm (2.0 in) |
| 1989 | 27.1 mm (1.1 in) |
| 1990 | 110.8 mm (4.4 in) |
| 1991 | 58.4 mm (2.3 in) |
| 1992 | 67.8 mm (2.7 in) |
| 1993 | 44.5 mm (1.8 in) |
| 1994 | 16.8 mm (0.7 in) |
| 1995 | 89.7 mm (3.5 in) |
| 1996 | 43.7 mm (1.7 in) |
| 1997 | 45.8 mm (1.8 in) |
| 1998 | 27.2 mm (1.1 in) |
| 1999 | 59.7 mm (2.4 in) |
| 2000 | 105.9 mm (4.2 in) |
| 2001 | 21.8 mm (0.9 in) |
| 2002 | 89.4 mm (3.5 in) |
| 2003 | 51.6 mm (2.0 in) |
| 2004 | 81.5 mm (3.2 in) |
| 2005 | 84.6 mm (3.3 in) |
| 2006 | 56.2 mm (2.2 in) |
| 2007 | 25.4 mm (1.0 in) |
| 2008 | 10.4 mm (0.4 in) |
| 2009 | 6.4 mm (0.25 in) |
| 2010 | 10.9 mm (0.4 in) |
| 2011 | 4.3 mm (0.17 in) |
| 2012 | 123.4 mm (4.9 in) |
| 2013 | 0.0 mm (0.00 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1963 | 37 days |
| 1964 | 89 days |
| 1965 | 76 days |
| 1966 | 120 days |
| 1967 | 68 days |
| 1968 | 47 days |
| 1969 | 89 days |
| 1970 | 95 days |
| 1971 | 365 days |
| 1972 | 148 days |
| 1973 | 70 days |
| 1974 | 114 days |
| 1975 | 145 days |
| 1976 | 94 days |
| 1977 | 79 days |
| 1978 | 140 days |
| 1979 | 110 days |
| 1980 | 118 days |
| 1981 | 48 days |
| 1982 | 112 days |
| 1983 | 70 days |
| 1984 | 104 days |
| 1985 | 59 days |
| 1986 | 64 days |
| 1987 | 53 days |
| 1988 | 76 days |
| 1989 | 99 days |
| 1990 | 82 days |
| 1991 | 119 days |
| 1992 | 99 days |
| 1993 | 139 days |
| 1994 | 78 days |
| 1995 | 144 days |
| 1996 | 148 days |
| 1997 | 48 days |
| 1998 | 160 days |
| 1999 | 144 days |
| 2000 | 140 days |
| 2001 | 170 days |
| 2002 | 125 days |
| 2003 | 115 days |
| 2004 | 46 days |
| 2005 | 79 days |
| 2006 | 89 days |
| 2007 | 82 days |
| 2008 | 248 days |
| 2009 | 329 days |
| 2010 | 127 days |
| 2011 | 243 days |
| 2012 | 85 days |
| 2013 | 31 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
36 years with a frostAcross 36 years with a frost, the median last spring frost at San Pedro falls on 7 February and the median first autumn frost on 3 December, which leaves a median of 305 days between them.
Fitted over all years, the growing season changes by +9.7 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1973 to 2012) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 7 February | n/a | 3 February | n/a | -7.9 days per decade |
| First autumn frost | 3 December | n/a | 3 December | n/a | +1.7 days per decade |
| Growing days | 305 days | n/a | 309 days | n/a | +9.7 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
47 years, 1964 to 2012A day with at least 34.1 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 101.8 mm (4.0 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 34.1 mm (1.3 in) | |
| 5 years | 53.6 mm (2.1 in) | |
| 10 years | 65.9 mm (2.6 in) | |
| 25 years | 80.9 mm (3.2 in) | |
| 50 years | 91.5 mm (3.6 in) | Longer than the 47 years of record |
| 100 years | 101.8 mm (4.0 in) | Longer than the 47 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, 47 years of values from 1964 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: 105.9 mm (4.2 in) in 2000; 79.8 mm (3.1 in) in 1995; 69.9 mm (2.8 in) in 1981.
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).