Lake Solano Weather Records (USC00044712)
Record envelope, standing records and threshold days for Lake Solano (USC00044712), California, United States, with 52 years of record.
Key Facts for Lake Solano
- Lake Solano (USC00044712) is a weather station in California, United States at 38.49 latitude and -122.00 longitude, 57 m (187 ft) above sea level.
- The station reports from 1975 to 2026, 52 years of record.
- 1,464 records set at Lake Solano still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Lake Solano tied a monthly record high maximum temperature of 40.0 C (104.0 F) on 9 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: California, United States, 38.49 latitude, -122.00 longitude.
- Elevation: 57 m (187 ft).
- Period of record: 1975 to 2026, 52 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
24 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 25.0 C (77.0 F) | -6.1 C (21.0 F) | 21.1 C (70.0 F) | 0.0 C (32.0 F) |
| Feb | 27.8 C (82.0 F) | -6.7 C (19.9 F) | 26.1 C (79.0 F) | 0.0 C (32.0 F) |
| Mar | 33.3 C (91.9 F) | -4.4 C (24.1 F) | 33.3 C (91.9 F) | 7.2 C (45.0 F) |
| Apr | 37.2 C (99.0 F) | 0.6 C (33.1 F) | 30.0 C (86.0 F) | 5.6 C (42.1 F) |
| May | 40.6 C (105.1 F) | 0.0 C (32.0 F) | 35.0 C (95.0 F) | 8.3 C (46.9 F) |
| Jun | 43.9 C (111.0 F) | 5.0 C (41.0 F) | 40.0 C (104.0 F) | 10.6 C (51.1 F) |
| Jul | 47.2 C (117.0 F) | 7.8 C (46.0 F) | 41.1 C (106.0 F) | 10.6 C (51.1 F) |
| Aug | 45.0 C (113.0 F) | 4.4 C (39.9 F) | 41.7 C (107.1 F) | 11.1 C (52.0 F) |
| Sep | 46.7 C (116.1 F) | 3.3 C (37.9 F) | 40.6 C (105.1 F) | 9.4 C (48.9 F) |
| Oct | 40.0 C (104.0 F) | 1.1 C (34.0 F) | 40.0 C (104.0 F) | 8.9 C (48.0 F) |
| Nov | 31.1 C (88.0 F) | -3.9 C (25.0 F) | n/a | n/a |
| Dec | 24.4 C (75.9 F) | -11.1 C (12.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1975 | 14 |
| 1976 | 24 |
| 1977 | 33 |
| 1978 | 28 |
| 1979 | 30 |
| 1980 | 25 |
| 1981 | 23 |
| 1982 | 38 |
| 1983 | 29 |
| 1984 | 19 |
| 1985 | 38 |
| 1986 | 32 |
| 1987 | 24 |
| 1988 | 33 |
| 1989 | 56 |
| 1990 | 40 |
| 1991 | 63 |
| 1992 | 16 |
| 1993 | 14 |
| 1994 | 17 |
| 1995 | 23 |
| 1996 | 46 |
| 1997 | 22 |
| 1998 | 24 |
| 1999 | 26 |
| 2000 | 35 |
| 2001 | 29 |
| 2002 | 32 |
| 2003 | 23 |
| 2004 | 18 |
| 2005 | 21 |
| 2006 | 31 |
| 2007 | 20 |
| 2008 | 24 |
| 2009 | 31 |
| 2010 | 32 |
| 2011 | 36 |
| 2012 | 21 |
| 2013 | 26 |
| 2014 | 22 |
| 2015 | 25 |
| 2016 | 24 |
| 2017 | 33 |
| 2018 | 30 |
| 2019 | 27 |
| 2020 | 36 |
| 2021 | 18 |
| 2022 | 25 |
| 2023 | 22 |
| 2024 | 29 |
| 2025 | 25 |
| 2026 | 32 |
All-Time Record Progression
4 new records| Date | Kind | Detail |
|---|---|---|
| 2006-07-22 | Record high minimum temperature | Record high minimum temperature 27.2 C (81.0 F) |
| 2006-07-23 | Record high minimum temperature | Record high minimum temperature 27.8 C (82.0 F) |
| 2021-07-12 | Record high maximum temperature | Record high maximum temperature 47.2 C (117.0 F) |
| 2024-07-03 | Record high minimum temperature | Record high minimum temperature 28.3 C (82.9 F) |
Wettest Day of Each Month
Dec: 129.5 mm (5.1 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 106.7 mm (4.2 in) | 4 January 2008 |
| Feb | 122.2 mm (4.8 in) | 3 February 1998 |
| Mar | 97.8 mm (3.9 in) | 9 March 1995 |
| Apr | 69.6 mm (2.7 in) | 11 April 1982 |
| May | 51.6 mm (2.0 in) | 16 May 1996 |
| Jun | 25.1 mm (1.0 in) | 29 June 2011 |
| Jul | 11.2 mm (0.4 in) | 31 July 2026 |
| Aug | 7.1 mm (0.28 in) | 22 August 2003 |
| Sep | 32.3 mm (1.3 in) | 17 September 1989 |
| Oct | 113.8 mm (4.5 in) | 25 October 2021 |
| Nov | 88.4 mm (3.5 in) | 22 November 1977 |
| Dec | 129.5 mm (5.1 in) | 31 December 2005 |
Period of Record Coverage
1975 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1975 | 149 | 41% | No |
| 1976 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 334 | 92% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 363 | 99% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 360 | 99% | Yes |
| 1983 | 363 | 99% | Yes |
| 1984 | 365 | 100% | Yes |
| 1985 | 273 | 75% | No |
| 1986 | 273 | 75% | No |
| 1987 | 365 | 100% | Yes |
| 1988 | 365 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 334 | 91% | Yes |
| 1993 | 365 | 100% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 335 | 92% | Yes |
| 1996 | 365 | 100% | Yes |
| 1997 | 364 | 100% | Yes |
| 1998 | 365 | 100% | Yes |
| 1999 | 365 | 100% | Yes |
| 2000 | 365 | 100% | Yes |
| 2001 | 363 | 99% | Yes |
| 2002 | 364 | 100% | Yes |
| 2003 | 363 | 99% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 366 | 100% | Yes |
| 2009 | 334 | 92% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 364 | 100% | Yes |
| 2014 | 364 | 100% | Yes |
| 2015 | 363 | 99% | Yes |
| 2016 | 361 | 99% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 364 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 363 | 99% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 284 | 78% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 9 October 2026 | Lake Solano, US | monthly high max (Tie, Provisional) | 40.0 C (104.0 F) | tie | 25 years | 5 of 100 (Routine) |
| 8 October 2026 | Lake Solano, US | daily high max (Tie, Provisional) | 37.8 C (100.0 F) | tie | 1 year | 1 of 100 (Routine) |
| 6 October 2026 | Lake Solano, US | daily high max (Provisional) | 38.9 C (102.0 F) | 1.1 C (2.0 F) | 1 year | 7 of 100 (Routine) |
| 5 October 2026 | Lake Solano, US | daily high min (Provisional) | 21.1 C (70.0 F) | 1.7 C (3.1 F) | 1 year | 10 of 100 (Routine) |
| 4 October 2026 | Lake Solano, US | daily high min (Provisional) | 19.4 C (66.9 F) | 2.7 C (4.9 F) | 28 years | 22 of 100 (Routine) |
| 5 September 2026 | Lake Solano, US | daily low min (Provisional) | 9.4 C (48.9 F) | 0.6 C (1.1 F) | 36 years | 18 of 100 (Routine) |
| 4 September 2026 | Lake Solano, US | daily low max (Provisional) | 23.3 C (73.9 F) | 2.3 C (4.1 F) | 33 years | 19 of 100 (Routine) |
| 28 August 2026 | Lake Solano, US | daily high min (Tie, Provisional) | 21.1 C (70.0 F) | tie | 47 years | 4 of 100 (Routine) |
| 31 July 2026 | Lake Solano, US | monthly rain | 11.2 mm (0.4 in) | 7.1 mm (0.28 in) | 46 years | 20 of 100 (Routine) |
| 16 July 2026 | Lake Solano, US | daily high min | 22.8 C (73.0 F) | 2.2 C (4.0 F) | 41 years | 24 of 100 (Routine) |
| 15 July 2026 | Lake Solano, US | daily high min | 23.3 C (73.9 F) | 1.6 C (2.9 F) | 41 years | 22 of 100 (Routine) |
| 7 July 2026 | Lake Solano, US | daily low min (Tie) | 10.6 C (51.1 F) | tie | 45 years | 4 of 100 (Routine) |
| 15 June 2026 | Lake Solano, US | daily low min (Tie) | 10.6 C (51.1 F) | tie | 47 years | 4 of 100 (Routine) |
| 14 June 2026 | Lake Solano, US | daily high max (Tie) | 40.0 C (104.0 F) | tie | 19 years | 2 of 100 (Routine) |
| 5 May 2026 | Lake Solano, US | daily rain | 13.7 mm (0.5 in) | 0.5 mm (0.02 in) | 1 year | 5 of 100 (Routine) |
| 21 April 2026 | Lake Solano, US | daily rain | 22.1 mm (0.9 in) | 13.0 mm (0.5 in) | 24 years | 20 of 100 (Routine) |
| 5 April 2026 | Lake Solano, US | daily high max | 28.9 C (84.0 F) | 0.6 C (1.1 F) | 40 years | 18 of 100 (Routine) |
| 1 April 2026 | Lake Solano, US | daily high min | 13.3 C (55.9 F) | 1.6 C (2.9 F) | 24 years | 17 of 100 (Routine) |
| 31 March 2026 | Lake Solano, US | daily high min (Tie) | 13.3 C (55.9 F) | tie | 48 years | 4 of 100 (Routine) |
| 30 March 2026 | Lake Solano, US | daily high min | 13.9 C (57.0 F) | 0.6 C (1.1 F) | 24 years | 14 of 100 (Routine) |
Climate Trend
44 complete years, 1976 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1976 | 15.9 C | -1.01 C |
| 1977 | 16.1 C | -0.84 C |
| 1979 | 15.9 C | -0.97 C |
| 1980 | 15.6 C | -1.27 C |
| 1981 | 16.7 C | -0.23 C |
| 1982 | 15.0 C | -1.96 C |
| 1983 | 15.7 C | -1.18 C |
| 1984 | 16.5 C | -0.37 C |
| 1987 | 16.2 C | -0.72 C |
| 1988 | 16.3 C | -0.63 C |
| 1989 | 15.3 C | -1.65 C |
| 1990 | 16.2 C | -0.67 C |
| 1991 | 16.2 C | -0.72 C |
| 1993 | 16.6 C | -0.35 C |
| 1994 | 16.2 C | -0.76 C |
| 1996 | 17.7 C | +0.83 C |
| 1997 | 17.9 C | +1.01 C |
| 1998 | 16.2 C | -0.74 C |
| 1999 | 16.7 C | -0.19 C |
| 2000 | 16.9 C | -0.06 C |
| 2001 | 17.7 C | +0.81 C |
| 2002 | 16.9 C | -0.06 C |
| 2003 | 17.2 C | +0.32 C |
| 2004 | 17.5 C | +0.54 C |
| 2005 | 17.4 C | +0.47 C |
| 2006 | 17.0 C | +0.05 C |
| 2007 | 17.3 C | +0.42 C |
| 2008 | 17.2 C | +0.29 C |
| 2010 | 15.9 C | -0.99 C |
| 2011 | 15.6 C | -1.28 C |
| 2012 | 16.8 C | -0.07 C |
| 2013 | 17.2 C | +0.28 C |
| 2014 | 18.2 C | +1.29 C |
| 2015 | 18.1 C | +1.15 C |
| 2016 | 17.5 C | +0.62 C |
| 2017 | 17.9 C | +0.98 C |
| 2018 | 17.6 C | +0.68 C |
| 2019 | 17.4 C | +0.50 C |
| 2020 | 18.3 C | +1.43 C |
| 2021 | 18.0 C | +1.09 C |
| 2022 | 18.1 C | +1.22 C |
| 2023 | 17.2 C | +0.29 C |
| 2024 | 18.5 C | +1.60 C |
| 2025 | 17.7 C | +0.79 C |
The annual mean temperature here has risen by 0.5 C (0.3 to 0.6) per decade over 1976 to 2025. In Fahrenheit: 0.8 F (0.6 to 1.1) per decade. The slope is a straight line fitted to 44 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 (0.3 to 0.6) per decade | 0.8 F (0.6 to 1.1) per decade | 1976 to 2025 | 44 | Rise |
| Mean daily maximum | 0.6 C (0.4 to 0.7) per decade | 1.0 F (0.8 to 1.3) per decade | 1976 to 2025 | 44 | Rise |
| Mean daily minimum | 0.3 C (0.2 to 0.5) per decade | 0.6 F (0.3 to 0.9) per decade | 1976 to 2025 | 44 | 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
1975 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 47.2 C (117.0 F) | 2021 | 42.2 C (108.0 F) | 52 |
| Coldest night (TNn) | -11.1 C (12.0 F) | 1990 | -3.3 C (26.1 F) | 52 |
| Wettest day (Rx1day) | 129.5 mm (5.1 in) | 2005 | 68.4 mm (2.7 in) | 52 |
| Wettest five days (Rx5day) | 274.2 mm (10.8 in) | 1980 | 128.0 mm (5.0 in) | 52 |
| Longest dry spell (CDD) | 183 days | 2019 | 121 days | 52 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1975 | 37.8 C (100.0 F) |
| 1976 | 40.6 C (105.1 F) |
| 1977 | 40.6 C (105.1 F) |
| 1978 | 43.3 C (109.9 F) |
| 1979 | 40.0 C (104.0 F) |
| 1980 | 40.6 C (105.1 F) |
| 1981 | 42.2 C (108.0 F) |
| 1982 | 37.8 C (100.0 F) |
| 1983 | 39.4 C (102.9 F) |
| 1984 | 41.1 C (106.0 F) |
| 1985 | 40.0 C (104.0 F) |
| 1986 | 38.3 C (100.9 F) |
| 1987 | 40.6 C (105.1 F) |
| 1988 | 42.2 C (108.0 F) |
| 1989 | 41.1 C (106.0 F) |
| 1990 | 43.9 C (111.0 F) |
| 1991 | 45.0 C (113.0 F) |
| 1992 | 42.2 C (108.0 F) |
| 1993 | 43.3 C (109.9 F) |
| 1994 | 40.6 C (105.1 F) |
| 1995 | 41.7 C (107.1 F) |
| 1996 | 43.9 C (111.0 F) |
| 1997 | 43.3 C (109.9 F) |
| 1998 | 43.3 C (109.9 F) |
| 1999 | 43.3 C (109.9 F) |
| 2000 | 43.9 C (111.0 F) |
| 2001 | 43.3 C (109.9 F) |
| 2002 | 44.4 C (111.9 F) |
| 2003 | 42.2 C (108.0 F) |
| 2004 | 41.1 C (106.0 F) |
| 2005 | 42.2 C (108.0 F) |
| 2006 | 44.4 C (111.9 F) |
| 2007 | 43.3 C (109.9 F) |
| 2008 | 43.3 C (109.9 F) |
| 2009 | 43.3 C (109.9 F) |
| 2010 | 41.7 C (107.1 F) |
| 2011 | 40.0 C (104.0 F) |
| 2012 | 41.1 C (106.0 F) |
| 2013 | 43.3 C (109.9 F) |
| 2014 | 41.7 C (107.1 F) |
| 2015 | 42.2 C (108.0 F) |
| 2016 | 42.8 C (109.0 F) |
| 2017 | 43.3 C (109.9 F) |
| 2018 | 42.2 C (108.0 F) |
| 2019 | 42.2 C (108.0 F) |
| 2020 | 45.0 C (113.0 F) |
| 2021 | 47.2 C (117.0 F) |
| 2022 | 46.7 C (116.1 F) |
| 2023 | 43.3 C (109.9 F) |
| 2024 | 45.0 C (113.0 F) |
| 2025 | 41.7 C (107.1 F) |
| 2026 | 41.7 C (107.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1975 | -3.9 C (25.0 F) |
| 1976 | -3.9 C (25.0 F) |
| 1977 | -1.7 C (28.9 F) |
| 1978 | -5.6 C (21.9 F) |
| 1979 | -5.6 C (21.9 F) |
| 1980 | -2.2 C (28.0 F) |
| 1981 | 0.6 C (33.1 F) |
| 1982 | -1.7 C (28.9 F) |
| 1983 | -3.3 C (26.1 F) |
| 1984 | -3.3 C (26.1 F) |
| 1985 | -5.0 C (23.0 F) |
| 1986 | -3.9 C (25.0 F) |
| 1987 | -4.4 C (24.1 F) |
| 1988 | -3.9 C (25.0 F) |
| 1989 | -6.7 C (19.9 F) |
| 1990 | -11.1 C (12.0 F) |
| 1991 | -5.0 C (23.0 F) |
| 1992 | -2.8 C (27.0 F) |
| 1993 | -5.0 C (23.0 F) |
| 1994 | -3.9 C (25.0 F) |
| 1995 | -4.4 C (24.1 F) |
| 1996 | -2.8 C (27.0 F) |
| 1997 | -3.9 C (25.0 F) |
| 1998 | -7.8 C (18.0 F) |
| 1999 | -3.9 C (25.0 F) |
| 2000 | -1.7 C (28.9 F) |
| 2001 | -1.7 C (28.9 F) |
| 2002 | -3.3 C (26.1 F) |
| 2003 | -1.7 C (28.9 F) |
| 2004 | -2.8 C (27.0 F) |
| 2005 | -0.6 C (30.9 F) |
| 2006 | -3.3 C (26.1 F) |
| 2007 | -6.1 C (21.0 F) |
| 2008 | -2.2 C (28.0 F) |
| 2009 | -5.0 C (23.0 F) |
| 2010 | -1.7 C (28.9 F) |
| 2011 | -3.3 C (26.1 F) |
| 2012 | -5.0 C (23.0 F) |
| 2013 | -5.6 C (21.9 F) |
| 2014 | 0.0 C (32.0 F) |
| 2015 | -2.2 C (28.0 F) |
| 2016 | -3.3 C (26.1 F) |
| 2017 | -2.8 C (27.0 F) |
| 2018 | -1.7 C (28.9 F) |
| 2019 | -1.7 C (28.9 F) |
| 2020 | -1.1 C (30.0 F) |
| 2021 | -1.1 C (30.0 F) |
| 2022 | -1.7 C (28.9 F) |
| 2023 | -1.7 C (28.9 F) |
| 2024 | -0.6 C (30.9 F) |
| 2025 | -2.2 C (28.0 F) |
| 2026 | 0.0 C (32.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1975 | 43.4 mm (1.7 in) |
| 1976 | 21.6 mm (0.9 in) |
| 1977 | 88.4 mm (3.5 in) |
| 1978 | 66.0 mm (2.6 in) |
| 1979 | 72.9 mm (2.9 in) |
| 1980 | 87.4 mm (3.4 in) |
| 1981 | 68.6 mm (2.7 in) |
| 1982 | 77.2 mm (3.0 in) |
| 1983 | 86.9 mm (3.4 in) |
| 1984 | 38.4 mm (1.5 in) |
| 1985 | 64.8 mm (2.6 in) |
| 1986 | 66.5 mm (2.6 in) |
| 1987 | 109.5 mm (4.3 in) |
| 1988 | 34.3 mm (1.4 in) |
| 1989 | 32.3 mm (1.3 in) |
| 1990 | 33.8 mm (1.3 in) |
| 1991 | 65.0 mm (2.6 in) |
| 1992 | 45.2 mm (1.8 in) |
| 1993 | 89.9 mm (3.5 in) |
| 1994 | 50.3 mm (2.0 in) |
| 1995 | 118.9 mm (4.7 in) |
| 1996 | 60.5 mm (2.4 in) |
| 1997 | 83.6 mm (3.3 in) |
| 1998 | 122.2 mm (4.8 in) |
| 1999 | 68.1 mm (2.7 in) |
| 2000 | 58.4 mm (2.3 in) |
| 2001 | 79.8 mm (3.1 in) |
| 2002 | 102.1 mm (4.0 in) |
| 2003 | 70.4 mm (2.8 in) |
| 2004 | 50.5 mm (2.0 in) |
| 2005 | 129.5 mm (5.1 in) |
| 2006 | 56.6 mm (2.2 in) |
| 2007 | 42.9 mm (1.7 in) |
| 2008 | 106.7 mm (4.2 in) |
| 2009 | 89.2 mm (3.5 in) |
| 2010 | 65.0 mm (2.6 in) |
| 2011 | 50.8 mm (2.0 in) |
| 2012 | 53.8 mm (2.1 in) |
| 2013 | 17.8 mm (0.7 in) |
| 2014 | 77.5 mm (3.1 in) |
| 2015 | 69.6 mm (2.7 in) |
| 2016 | 70.9 mm (2.8 in) |
| 2017 | 71.9 mm (2.8 in) |
| 2018 | 69.3 mm (2.7 in) |
| 2019 | 112.0 mm (4.4 in) |
| 2020 | 16.8 mm (0.7 in) |
| 2021 | 113.8 mm (4.5 in) |
| 2022 | 34.3 mm (1.4 in) |
| 2023 | 74.9 mm (2.9 in) |
| 2024 | 79.0 mm (3.1 in) |
| 2025 | 55.1 mm (2.2 in) |
| 2026 | 25.7 mm (1.0 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1975 | 44.9 mm (1.8 in) |
| 1976 | 53.6 mm (2.1 in) |
| 1977 | 102.4 mm (4.0 in) |
| 1978 | 223.0 mm (8.8 in) |
| 1979 | 134.9 mm (5.3 in) |
| 1980 | 274.2 mm (10.8 in) |
| 1981 | 105.4 mm (4.1 in) |
| 1982 | 166.3 mm (6.5 in) |
| 1983 | 162.8 mm (6.4 in) |
| 1984 | 74.1 mm (2.9 in) |
| 1985 | 66.6 mm (2.6 in) |
| 1986 | 224.8 mm (8.9 in) |
| 1987 | 121.0 mm (4.8 in) |
| 1988 | 82.5 mm (3.2 in) |
| 1989 | 53.8 mm (2.1 in) |
| 1990 | 74.5 mm (2.9 in) |
| 1991 | 163.9 mm (6.5 in) |
| 1992 | 118.7 mm (4.7 in) |
| 1993 | 147.5 mm (5.8 in) |
| 1994 | 74.4 mm (2.9 in) |
| 1995 | 234.5 mm (9.2 in) |
| 1996 | 125.8 mm (5.0 in) |
| 1997 | 187.3 mm (7.4 in) |
| 1998 | 200.6 mm (7.9 in) |
| 1999 | 104.7 mm (4.1 in) |
| 2000 | 130.1 mm (5.1 in) |
| 2001 | 131.4 mm (5.2 in) |
| 2002 | 261.9 mm (10.3 in) |
| 2003 | 92.2 mm (3.6 in) |
| 2004 | 136.9 mm (5.4 in) |
| 2005 | 176.5 mm (6.9 in) |
| 2006 | 187.0 mm (7.4 in) |
| 2007 | 67.9 mm (2.7 in) |
| 2008 | 190.3 mm (7.5 in) |
| 2009 | 133.5 mm (5.3 in) |
| 2010 | 191.4 mm (7.5 in) |
| 2011 | 117.9 mm (4.6 in) |
| 2012 | 146.8 mm (5.8 in) |
| 2013 | 20.4 mm (0.8 in) |
| 2014 | 116.1 mm (4.6 in) |
| 2015 | 110.4 mm (4.3 in) |
| 2016 | 113.0 mm (4.4 in) |
| 2017 | 236.2 mm (9.3 in) |
| 2018 | 85.3 mm (3.4 in) |
| 2019 | 169.7 mm (6.7 in) |
| 2020 | 25.2 mm (1.0 in) |
| 2021 | 198.1 mm (7.8 in) |
| 2022 | 69.6 mm (2.7 in) |
| 2023 | 163.1 mm (6.4 in) |
| 2024 | 167.4 mm (6.6 in) |
| 2025 | 118.3 mm (4.7 in) |
| 2026 | 66.3 mm (2.6 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1975 | 52 days |
| 1976 | 65 days |
| 1977 | 115 days |
| 1978 | 101 days |
| 1979 | 112 days |
| 1980 | 100 days |
| 1981 | 127 days |
| 1982 | 89 days |
| 1983 | 146 days |
| 1984 | 84 days |
| 1985 | 113 days |
| 1986 | 133 days |
| 1987 | 139 days |
| 1988 | 127 days |
| 1989 | 103 days |
| 1990 | 117 days |
| 1991 | 118 days |
| 1992 | 53 days |
| 1993 | 126 days |
| 1994 | 137 days |
| 1995 | 123 days |
| 1996 | 159 days |
| 1997 | 76 days |
| 1998 | 119 days |
| 1999 | 146 days |
| 2000 | 124 days |
| 2001 | 90 days |
| 2002 | 169 days |
| 2003 | 104 days |
| 2004 | 114 days |
| 2005 | 132 days |
| 2006 | 135 days |
| 2007 | 74 days |
| 2008 | 131 days |
| 2009 | 131 days |
| 2010 | 142 days |
| 2011 | 88 days |
| 2012 | 147 days |
| 2013 | 81 days |
| 2014 | 151 days |
| 2015 | 78 days |
| 2016 | 85 days |
| 2017 | 129 days |
| 2018 | 167 days |
| 2019 | 183 days |
| 2020 | 179 days |
| 2021 | 176 days |
| 2022 | 104 days |
| 2023 | 105 days |
| 2024 | 160 days |
| 2025 | 154 days |
| 2026 | 72 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 Lake Solano falls on 19 February and the median first autumn frost on 29 November, which leaves a median of 287 days between them.
Fitted over all years, the growing season changes by +4.9 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1987 to 2023) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 19 February | n/a | 24 February | n/a | -3.3 days per decade |
| First autumn frost | 29 November | n/a | 30 November | n/a | +1.6 days per decade |
| Growing days | 287 days | n/a | 286 days | n/a | +4.9 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
49 years, 1976 to 2025A day with at least 68.4 mm (2.7 in) of rain is expected about once in 2 years. A day with at least 135.6 mm (5.3 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 68.4 mm (2.7 in) | |
| 5 years | 93.1 mm (3.7 in) | |
| 10 years | 106.2 mm (4.2 in) | |
| 25 years | 120.0 mm (4.7 in) | |
| 50 years | 128.4 mm (5.1 in) | Longer than the 49 years of record |
| 100 years | 135.6 mm (5.3 in) | Longer than the 49 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, 49 years of values from 1976 to 2025.
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: 129.5 mm (5.1 in) in 2005; 122.2 mm (4.8 in) in 1998; 118.9 mm (4.7 in) in 1995.
Station Changes
2 suspected2 changes were suspected in the annual mean temperature of Lake Solano, at 1993 and 2010. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1993 ran 0.6 C (1.1 F) higher than in the years before (likely change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 2010 ran 0.3 C (0.5 F) lower than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1993 | +0.6 | +1.1 | likely | 5 |
| 2010 | -0.3 | -0.5 | possible | 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.
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 (2026-10-14).