Martinez Wtp Weather Records (USC00045378)
Record envelope, standing records and threshold days for Martinez Wtp (USC00045378), California, United States, with 50 years of record.
Key Facts for Martinez Wtp
- Martinez Wtp (USC00045378) is a weather station in California, United States at 38.01 latitude and -122.11 longitude, 12 m (40 ft) above sea level.
- The station reports from 1970 to 2019, 50 years of record.
- 1,464 records set at Martinez Wtp still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Martinez Wtp set a daily record high minimum temperature of 19.4 C (66.9 F) on 22 August 2019.
About the Station
- Location: California, United States, 38.01 latitude, -122.11 longitude.
- Elevation: 12 m (40 ft).
- Period of record: 1970 to 2019, 50 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
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 | 23.3 C (73.9 F) | -6.7 C (19.9 F) | n/a | n/a |
| Feb | 26.7 C (80.1 F) | -3.9 C (25.0 F) | n/a | n/a |
| Mar | 31.1 C (88.0 F) | -3.9 C (25.0 F) | n/a | n/a |
| Apr | 36.7 C (98.1 F) | -1.7 C (28.9 F) | n/a | n/a |
| May | 40.0 C (104.0 F) | 1.1 C (34.0 F) | n/a | n/a |
| Jun | 43.3 C (109.9 F) | 4.4 C (39.9 F) | n/a | n/a |
| Jul | 46.1 C (115.0 F) | 5.0 C (41.0 F) | n/a | n/a |
| Aug | 41.7 C (107.1 F) | 5.6 C (42.1 F) | n/a | n/a |
| Sep | 42.2 C (108.0 F) | 4.4 C (39.9 F) | n/a | n/a |
| Oct | 39.4 C (102.9 F) | 1.1 C (34.0 F) | n/a | n/a |
| Nov | 30.0 C (86.0 F) | -4.4 C (24.1 F) | n/a | n/a |
| Dec | 23.3 C (73.9 F) | -7.2 C (19.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1970 | 26 |
| 1971 | 34 |
| 1972 | 45 |
| 1973 | 35 |
| 1974 | 24 |
| 1975 | 39 |
| 1976 | 38 |
| 1977 | 32 |
| 1978 | 25 |
| 1979 | 27 |
| 1980 | 36 |
| 1981 | 43 |
| 1982 | 45 |
| 1983 | 22 |
| 1984 | 44 |
| 1985 | 58 |
| 1986 | 26 |
| 1987 | 29 |
| 1988 | 40 |
| 1989 | 42 |
| 1990 | 27 |
| 1991 | 19 |
| 1992 | 18 |
| 1993 | 15 |
| 1994 | 7 |
| 1995 | 32 |
| 1996 | 37 |
| 1997 | 31 |
| 1998 | 30 |
| 1999 | 29 |
| 2000 | 32 |
| 2001 | 11 |
| 2002 | 20 |
| 2003 | 17 |
| 2004 | 26 |
| 2005 | 20 |
| 2006 | 27 |
| 2007 | 23 |
| 2008 | 18 |
| 2009 | 64 |
| 2010 | 21 |
| 2011 | 42 |
| 2012 | 19 |
| 2013 | 27 |
| 2014 | 29 |
| 2015 | 15 |
| 2016 | 15 |
| 2017 | 21 |
| 2018 | 48 |
| 2019 | 14 |
Wettest Day of Each Month
Jan: 111.3 mm (4.4 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 111.3 mm (4.4 in) | 5 January 1982 |
| Feb | 81.8 mm (3.2 in) | 3 February 1998 |
| Mar | 58.4 mm (2.3 in) | 31 March 1982 |
| Apr | 38.1 mm (1.5 in) | 13 April 2003 |
| May | 38.9 mm (1.5 in) | 16 May 1996 |
| Jun | 32.5 mm (1.3 in) | 16 June 1995 |
| Jul | 6.6 mm (0.26 in) | 8 July 1974 |
| Aug | 16.5 mm (0.6 in) | 20 August 1997 |
| Sep | 24.1 mm (0.9 in) | 30 September 1983 |
| Oct | 78.2 mm (3.1 in) | 14 October 2009 |
| Nov | 96.0 mm (3.8 in) | 6 November 1994 |
| Dec | 93.5 mm (3.7 in) | 31 December 2005 |
Period of Record Coverage
1970 to 2019| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1970 | 333 | 91% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 364 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 362 | 99% | Yes |
| 1976 | 336 | 92% | Yes |
| 1977 | 356 | 98% | Yes |
| 1978 | 360 | 99% | Yes |
| 1979 | 362 | 99% | Yes |
| 1980 | 364 | 99% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 363 | 99% | Yes |
| 1983 | 361 | 99% | Yes |
| 1984 | 365 | 100% | Yes |
| 1985 | 363 | 99% | Yes |
| 1986 | 364 | 100% | Yes |
| 1987 | 364 | 100% | Yes |
| 1988 | 362 | 99% | Yes |
| 1989 | 363 | 99% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 364 | 100% | Yes |
| 1992 | 365 | 100% | Yes |
| 1993 | 364 | 100% | Yes |
| 1994 | 364 | 100% | Yes |
| 1995 | 364 | 100% | Yes |
| 1996 | 363 | 99% | Yes |
| 1997 | 364 | 100% | Yes |
| 1998 | 361 | 99% | Yes |
| 1999 | 363 | 99% | Yes |
| 2000 | 363 | 99% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 364 | 100% | Yes |
| 2003 | 365 | 100% | Yes |
| 2004 | 364 | 99% | Yes |
| 2005 | 361 | 99% | Yes |
| 2006 | 363 | 99% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 364 | 99% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 364 | 100% | Yes |
| 2011 | 364 | 100% | Yes |
| 2012 | 350 | 96% | Yes |
| 2013 | 365 | 100% | Yes |
| 2014 | 364 | 100% | Yes |
| 2015 | 363 | 99% | Yes |
| 2016 | 365 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 333 | 91% | Yes |
| 2019 | 243 | 67% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 22 August 2019 | Martinez Wtp, US | daily high min | 19.4 C (66.9 F) | 2.7 C (4.9 F) | 36 years | 28 of 100 (Routine) |
| 16 August 2019 | Martinez Wtp, US | daily high min | 17.2 C (63.0 F) | 1.1 C (2.0 F) | 36 years | 20 of 100 (Routine) |
| 15 August 2019 | Martinez Wtp, US | daily high min | 17.8 C (64.0 F) | 1.1 C (2.0 F) | 26 years | 18 of 100 (Routine) |
| 15 August 2019 | Martinez Wtp, US | daily high max | 38.9 C (102.0 F) | 1.1 C (2.0 F) | 36 years | 17 of 100 (Routine) |
| 14 August 2019 | Martinez Wtp, US | daily high max (Tie) | 38.3 C (100.9 F) | tie | 24 years | 3 of 100 (Routine) |
| 11 August 2019 | Martinez Wtp, US | daily high min (Tie) | 16.1 C (61.0 F) | tie | 38 years | 4 of 100 (Routine) |
| 10 August 2019 | Martinez Wtp, US | daily high min (Tie) | 16.7 C (62.1 F) | tie | 48 years | 4 of 100 (Routine) |
| 8 August 2019 | Martinez Wtp, US | daily low max (Tie) | 24.4 C (75.9 F) | tie | 5 years | 1 of 100 (Routine) |
| 15 July 2019 | Martinez Wtp, US | daily high min (Tie) | 16.7 C (62.1 F) | tie | 46 years | 4 of 100 (Routine) |
| 13 June 2019 | Martinez Wtp, US | daily high min | 17.2 C (63.0 F) | 1.1 C (2.0 F) | 18 years | 14 of 100 (Routine) |
| 12 June 2019 | Martinez Wtp, US | daily high max | 40.6 C (105.1 F) | 3.9 C (7.0 F) | 30 years | 22 of 100 (Routine) |
| 11 June 2019 | Martinez Wtp, US | daily high max (Tie) | 39.4 C (102.9 F) | tie | 33 years | 3 of 100 (Routine) |
| 22 May 2019 | Martinez Wtp, US | daily low max | 18.9 C (66.0 F) | 0.5 C (0.9 F) | 8 years | 8 of 100 (Routine) |
| 19 May 2019 | Martinez Wtp, US | daily rain | 20.3 mm (0.8 in) | 13.2 mm (0.5 in) | 13 years | 20 of 100 (Routine) |
| 19 May 2019 | Martinez Wtp, US | monthly low max | 12.8 C (55.0 F) | 1.1 C (2.0 F) | 42 years | 29 of 100 (Routine) |
| 17 May 2019 | Martinez Wtp, US | daily rain | 5.3 mm (0.21 in) | 1.2 mm (0.05 in) | 30 years | 16 of 100 (Routine) |
| 17 May 2019 | Martinez Wtp, US | daily low max | 16.1 C (61.0 F) | 0.6 C (1.1 F) | 13 years | 10 of 100 (Routine) |
| 24 April 2019 | Martinez Wtp, US | daily high max | 31.7 C (89.1 F) | 1.1 C (2.0 F) | 14 years | 11 of 100 (Routine) |
| 19 April 2019 | Martinez Wtp, US | daily high min | 14.4 C (57.9 F) | 1.6 C (2.9 F) | 38 years | 21 of 100 (Routine) |
| 18 April 2019 | Martinez Wtp, US | daily high min | 12.8 C (55.0 F) | 0.6 C (1.1 F) | 21 years | 13 of 100 (Routine) |
Climate Trend
45 complete years, 1971 to 2017| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1971 | 15.0 C | -0.58 C |
| 1972 | 15.5 C | -0.07 C |
| 1973 | 16.1 C | +0.55 C |
| 1974 | 15.8 C | +0.26 C |
| 1975 | 15.1 C | -0.43 C |
| 1977 | 15.6 C | +0.02 C |
| 1978 | 15.8 C | +0.29 C |
| 1979 | 16.1 C | +0.57 C |
| 1980 | 16.1 C | +0.54 C |
| 1981 | 16.9 C | +1.32 C |
| 1982 | 15.3 C | -0.27 C |
| 1983 | 15.9 C | +0.33 C |
| 1984 | 15.7 C | +0.17 C |
| 1985 | 14.8 C | -0.76 C |
| 1986 | 15.8 C | +0.30 C |
| 1987 | 15.6 C | +0.08 C |
| 1988 | 16.3 C | +0.75 C |
| 1989 | 15.4 C | -0.15 C |
| 1990 | 15.4 C | -0.12 C |
| 1991 | 15.3 C | -0.27 C |
| 1992 | 16.2 C | +0.64 C |
| 1993 | 15.7 C | +0.12 C |
| 1994 | 15.2 C | -0.29 C |
| 1995 | 16.3 C | +0.77 C |
| 1996 | 16.6 C | +1.11 C |
| 1997 | 17.0 C | +1.44 C |
| 1998 | 15.3 C | -0.22 C |
| 1999 | 15.1 C | -0.43 C |
| 2000 | 15.8 C | +0.25 C |
| 2001 | 16.1 C | +0.53 C |
| 2002 | 15.7 C | +0.14 C |
| 2003 | 16.0 C | +0.48 C |
| 2004 | 15.8 C | +0.22 C |
| 2005 | 14.7 C | -0.82 C |
| 2006 | 15.2 C | -0.32 C |
| 2007 | 15.3 C | -0.19 C |
| 2008 | 15.1 C | -0.48 C |
| 2009 | 14.4 C | -1.09 C |
| 2010 | 14.6 C | -0.93 C |
| 2011 | 13.9 C | -1.64 C |
| 2013 | 15.0 C | -0.57 C |
| 2014 | 15.2 C | -0.38 C |
| 2015 | 15.9 C | +0.38 C |
| 2016 | 15.1 C | -0.48 C |
| 2017 | 15.0 C | -0.57 C |
The annual mean temperature here has fallen by 0.17 C (0.03 to 0.30) per decade over 1971 to 2017. In Fahrenheit: 0.3 F (0.1 to 0.5) 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 | -0.16 C (-0.30 to -0.03) per decade | -0.3 F (-0.5 to -0.1) per decade | 1971 to 2017 | 45 | Fall |
| Mean daily maximum | -0.01 C (-0.15 to 0.13) per decade | -0.02 F (-0.27 to 0.23) per decade | 1971 to 2017 | 45 | Not clearly different from zero |
| Mean daily minimum | -0.3 C (-0.5 to -0.1) per decade | -0.6 F (-1.0 to -0.2) per decade | 1971 to 2017 | 45 | 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
1970 to 2019| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 46.1 C (115.0 F) | 1972 | 40.6 C (105.1 F) | 50 |
| Coldest night (TNn) | -7.2 C (19.0 F) | 1990 | -2.8 C (27.0 F) | 50 |
| Wettest day (Rx1day) | 111.3 mm (4.4 in) | 1982 | 46.0 mm (1.8 in) | 50 |
| Wettest five days (Rx5day) | 195.3 mm (7.7 in) | 1986 | 88.8 mm (3.5 in) | 50 |
| Longest dry spell (CDD) | 182 days | 2017 | 124 days | 50 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1970 | 41.7 C (107.1 F) |
| 1971 | 42.2 C (108.0 F) |
| 1972 | 46.1 C (115.0 F) |
| 1973 | 42.8 C (109.0 F) |
| 1974 | 40.6 C (105.1 F) |
| 1975 | 43.3 C (109.9 F) |
| 1976 | 38.9 C (102.0 F) |
| 1977 | 42.2 C (108.0 F) |
| 1978 | 41.1 C (106.0 F) |
| 1979 | 40.6 C (105.1 F) |
| 1980 | 41.1 C (106.0 F) |
| 1981 | 43.3 C (109.9 F) |
| 1982 | 39.4 C (102.9 F) |
| 1983 | 41.7 C (107.1 F) |
| 1984 | 41.1 C (106.0 F) |
| 1985 | 40.6 C (105.1 F) |
| 1986 | 37.8 C (100.0 F) |
| 1987 | 40.0 C (104.0 F) |
| 1988 | 43.9 C (111.0 F) |
| 1989 | 40.6 C (105.1 F) |
| 1990 | 40.0 C (104.0 F) |
| 1991 | 41.7 C (107.1 F) |
| 1992 | 39.4 C (102.9 F) |
| 1993 | 41.7 C (107.1 F) |
| 1994 | 39.4 C (102.9 F) |
| 1995 | 41.1 C (106.0 F) |
| 1996 | 40.0 C (104.0 F) |
| 1997 | 41.1 C (106.0 F) |
| 1998 | 41.7 C (107.1 F) |
| 1999 | 40.6 C (105.1 F) |
| 2000 | 43.3 C (109.9 F) |
| 2001 | 42.2 C (108.0 F) |
| 2002 | 40.6 C (105.1 F) |
| 2003 | 40.6 C (105.1 F) |
| 2004 | 38.3 C (100.9 F) |
| 2005 | 39.4 C (102.9 F) |
| 2006 | 43.9 C (111.0 F) |
| 2007 | 39.4 C (102.9 F) |
| 2008 | 40.6 C (105.1 F) |
| 2009 | 40.6 C (105.1 F) |
| 2010 | 40.0 C (104.0 F) |
| 2011 | 38.3 C (100.9 F) |
| 2012 | 40.6 C (105.1 F) |
| 2013 | 41.7 C (107.1 F) |
| 2014 | 38.3 C (100.9 F) |
| 2015 | 40.0 C (104.0 F) |
| 2016 | 37.8 C (100.0 F) |
| 2017 | 42.2 C (108.0 F) |
| 2018 | 39.4 C (102.9 F) |
| 2019 | 40.6 C (105.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1970 | -1.1 C (30.0 F) |
| 1971 | -2.8 C (27.0 F) |
| 1972 | -6.7 C (19.9 F) |
| 1973 | -2.8 C (27.0 F) |
| 1974 | -1.1 C (30.0 F) |
| 1975 | -3.3 C (26.1 F) |
| 1976 | -3.3 C (26.1 F) |
| 1977 | -2.2 C (28.0 F) |
| 1978 | -2.8 C (27.0 F) |
| 1979 | -2.2 C (28.0 F) |
| 1980 | -1.7 C (28.9 F) |
| 1981 | 2.2 C (36.0 F) |
| 1982 | -0.6 C (30.9 F) |
| 1983 | -0.6 C (30.9 F) |
| 1984 | -3.9 C (25.0 F) |
| 1985 | -3.9 C (25.0 F) |
| 1986 | 0.0 C (32.0 F) |
| 1987 | -2.8 C (27.0 F) |
| 1988 | -1.7 C (28.9 F) |
| 1989 | -3.3 C (26.1 F) |
| 1990 | -7.2 C (19.0 F) |
| 1991 | -2.2 C (28.0 F) |
| 1992 | -1.1 C (30.0 F) |
| 1993 | -3.3 C (26.1 F) |
| 1994 | -1.7 C (28.9 F) |
| 1995 | 0.0 C (32.0 F) |
| 1996 | -1.1 C (30.0 F) |
| 1997 | -1.7 C (28.9 F) |
| 1998 | -3.9 C (25.0 F) |
| 1999 | -1.7 C (28.9 F) |
| 2000 | 0.6 C (33.1 F) |
| 2001 | -1.1 C (30.0 F) |
| 2002 | -3.3 C (26.1 F) |
| 2003 | -0.6 C (30.9 F) |
| 2004 | -4.4 C (24.1 F) |
| 2005 | -2.8 C (27.0 F) |
| 2006 | -4.4 C (24.1 F) |
| 2007 | -6.7 C (19.9 F) |
| 2008 | -5.0 C (23.0 F) |
| 2009 | -6.7 C (19.9 F) |
| 2010 | -2.8 C (27.0 F) |
| 2011 | -4.4 C (24.1 F) |
| 2012 | -5.0 C (23.0 F) |
| 2013 | -7.2 C (19.0 F) |
| 2014 | -2.8 C (27.0 F) |
| 2015 | -4.4 C (24.1 F) |
| 2016 | -4.4 C (24.1 F) |
| 2017 | -4.4 C (24.1 F) |
| 2018 | -3.9 C (25.0 F) |
| 2019 | -2.8 C (27.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1970 | 48.0 mm (1.9 in) |
| 1971 | 34.5 mm (1.4 in) |
| 1972 | 33.0 mm (1.3 in) |
| 1973 | 51.3 mm (2.0 in) |
| 1974 | 39.1 mm (1.5 in) |
| 1975 | 35.8 mm (1.4 in) |
| 1976 | 28.7 mm (1.1 in) |
| 1977 | 39.4 mm (1.6 in) |
| 1978 | 35.3 mm (1.4 in) |
| 1979 | 46.5 mm (1.8 in) |
| 1980 | 38.1 mm (1.5 in) |
| 1981 | 61.0 mm (2.4 in) |
| 1982 | 111.3 mm (4.4 in) |
| 1983 | 48.3 mm (1.9 in) |
| 1984 | 42.7 mm (1.7 in) |
| 1985 | 49.5 mm (1.9 in) |
| 1986 | 54.1 mm (2.1 in) |
| 1987 | 53.1 mm (2.1 in) |
| 1988 | 35.6 mm (1.4 in) |
| 1989 | 41.4 mm (1.6 in) |
| 1990 | 37.3 mm (1.5 in) |
| 1991 | 50.8 mm (2.0 in) |
| 1992 | 41.4 mm (1.6 in) |
| 1993 | 77.5 mm (3.1 in) |
| 1994 | 96.0 mm (3.8 in) |
| 1995 | 59.4 mm (2.3 in) |
| 1996 | 38.9 mm (1.5 in) |
| 1997 | 51.8 mm (2.0 in) |
| 1998 | 81.8 mm (3.2 in) |
| 1999 | 30.0 mm (1.2 in) |
| 2000 | 75.4 mm (3.0 in) |
| 2001 | 48.0 mm (1.9 in) |
| 2002 | 50.0 mm (2.0 in) |
| 2003 | 46.2 mm (1.8 in) |
| 2004 | 38.6 mm (1.5 in) |
| 2005 | 93.5 mm (3.7 in) |
| 2006 | 27.9 mm (1.1 in) |
| 2007 | 27.4 mm (1.1 in) |
| 2008 | 55.9 mm (2.2 in) |
| 2009 | 78.2 mm (3.1 in) |
| 2010 | 41.4 mm (1.6 in) |
| 2011 | 41.1 mm (1.6 in) |
| 2012 | 43.9 mm (1.7 in) |
| 2013 | 20.3 mm (0.8 in) |
| 2014 | 78.7 mm (3.1 in) |
| 2015 | 24.1 mm (0.9 in) |
| 2016 | 39.6 mm (1.6 in) |
| 2017 | 63.5 mm (2.5 in) |
| 2018 | 50.8 mm (2.0 in) |
| 2019 | 45.7 mm (1.8 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1970 | 140.7 mm (5.5 in) |
| 1971 | 61.3 mm (2.4 in) |
| 1972 | 71.3 mm (2.8 in) |
| 1973 | 111.1 mm (4.4 in) |
| 1974 | 79.3 mm (3.1 in) |
| 1975 | 76.5 mm (3.0 in) |
| 1976 | 40.6 mm (1.6 in) |
| 1977 | 68.4 mm (2.7 in) |
| 1978 | 104.1 mm (4.1 in) |
| 1979 | 99.4 mm (3.9 in) |
| 1980 | 124.0 mm (4.9 in) |
| 1981 | 119.0 mm (4.7 in) |
| 1982 | 168.7 mm (6.6 in) |
| 1983 | 91.8 mm (3.6 in) |
| 1984 | 66.6 mm (2.6 in) |
| 1985 | 56.4 mm (2.2 in) |
| 1986 | 195.3 mm (7.7 in) |
| 1987 | 64.9 mm (2.6 in) |
| 1988 | 62.7 mm (2.5 in) |
| 1989 | 45.7 mm (1.8 in) |
| 1990 | 60.0 mm (2.4 in) |
| 1991 | 72.2 mm (2.8 in) |
| 1992 | 106.4 mm (4.2 in) |
| 1993 | 110.3 mm (4.3 in) |
| 1994 | 114.3 mm (4.5 in) |
| 1995 | 112.7 mm (4.4 in) |
| 1996 | 67.7 mm (2.7 in) |
| 1997 | 109.8 mm (4.3 in) |
| 1998 | 129.5 mm (5.1 in) |
| 1999 | 73.4 mm (2.9 in) |
| 2000 | 112.5 mm (4.4 in) |
| 2001 | 85.4 mm (3.4 in) |
| 2002 | 143.9 mm (5.7 in) |
| 2003 | 49.0 mm (1.9 in) |
| 2004 | 88.1 mm (3.5 in) |
| 2005 | 115.1 mm (4.5 in) |
| 2006 | 121.2 mm (4.8 in) |
| 2007 | 49.0 mm (1.9 in) |
| 2008 | 89.4 mm (3.5 in) |
| 2009 | 92.7 mm (3.6 in) |
| 2010 | 121.9 mm (4.8 in) |
| 2011 | 87.9 mm (3.5 in) |
| 2012 | 82.8 mm (3.3 in) |
| 2013 | 35.6 mm (1.4 in) |
| 2014 | 124.9 mm (4.9 in) |
| 2015 | 52.8 mm (2.1 in) |
| 2016 | 68.1 mm (2.7 in) |
| 2017 | 146.3 mm (5.8 in) |
| 2018 | 55.9 mm (2.2 in) |
| 2019 | 103.4 mm (4.1 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1970 | 130 days |
| 1971 | 149 days |
| 1972 | 108 days |
| 1973 | 159 days |
| 1974 | 111 days |
| 1975 | 85 days |
| 1976 | 126 days |
| 1977 | 120 days |
| 1978 | 117 days |
| 1979 | 164 days |
| 1980 | 100 days |
| 1981 | 128 days |
| 1982 | 154 days |
| 1983 | 104 days |
| 1984 | 133 days |
| 1985 | 96 days |
| 1986 | 131 days |
| 1987 | 155 days |
| 1988 | 128 days |
| 1989 | 64 days |
| 1990 | 114 days |
| 1991 | 73 days |
| 1992 | 112 days |
| 1993 | 130 days |
| 1994 | 120 days |
| 1995 | 137 days |
| 1996 | 163 days |
| 1997 | 76 days |
| 1998 | 121 days |
| 1999 | 177 days |
| 2000 | 85 days |
| 2001 | 90 days |
| 2002 | 170 days |
| 2003 | 122 days |
| 2004 | 114 days |
| 2005 | 119 days |
| 2006 | 135 days |
| 2007 | 158 days |
| 2008 | 163 days |
| 2009 | 129 days |
| 2010 | 142 days |
| 2011 | 92 days |
| 2012 | 178 days |
| 2013 | 87 days |
| 2014 | 100 days |
| 2015 | 111 days |
| 2016 | 147 days |
| 2017 | 182 days |
| 2018 | 168 days |
| 2019 | 103 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
32 years with a frostAcross 32 years with a frost, the median last spring frost at Martinez Wtp falls on 5 February and the median first autumn frost on 28 November, which leaves a median of 303 days between them.
Fitted over all years, the growing season changes by -1.6 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1974 to 2017) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 5 February | n/a | 5 February | n/a | -1.5 days per decade |
| First autumn frost | 28 November | n/a | 27 November | n/a | -3.0 days per decade |
| Growing days | 303 days | n/a | 303 days | n/a | -1.6 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, 1970 to 2018A day with at least 45.5 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 123.6 mm (4.9 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 45.5 mm (1.8 in) | |
| 5 years | 62.6 mm (2.5 in) | |
| 10 years | 75.3 mm (3.0 in) | |
| 25 years | 93.2 mm (3.7 in) | |
| 50 years | 107.8 mm (4.2 in) | Longer than the 47 years of record |
| 100 years | 123.6 mm (4.9 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 1970 to 2018.
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: 111.3 mm (4.4 in) in 1982; 96.0 mm (3.8 in) in 1994; 93.5 mm (3.7 in) in 2005.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Martinez Wtp, at 2004. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 2004 ran 0.6 C (1.1 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 2004 | -0.6 | -1.1 | likely | 5 |
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Climate Twins
2002 to 2017 against 1961 to 1990Over 2002 to 2017, Martinez Wtp had a mean temperature of 15.1 C (59.2 F) and 455.6 mm (17.9 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Gilroy (United States, 122 km away), Paso Robles (United States, 294 km away) and Rosario (Mexico, 2,005 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Gilroy | United States | 122 km (76 mi) | 15.2 C (59.3 F) | 535.9 mm (21.1 in) | 0.68 |
| Paso Robles | United States | 294 km (183 mi) | 15.2 C (59.4 F) | 347.0 mm (13.7 in) | 0.74 |
| Rosario | Mexico | 2,005 km (1,246 mi) | 14.8 C (58.7 F) | 501.3 mm (19.7 in) | 1.02 |
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).