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Built 2026-10-14 (14 October 2026)

Somes Bar California Weather Records (USR0000CSOM)

Record envelope, standing records and threshold days for Somes Bar California (USR0000CSOM), California, United States, with 36 years of record.

Key Facts for Somes Bar California

  • Somes Bar California (USR0000CSOM) is a weather station in California, United States at 41.39 latitude and -123.50 longitude, 280 m (920 ft) above sea level.
  • The station reports from 1988 to 2023, 36 years of record.
  • 1,464 records set at Somes Bar California still stand.
  • Records are tracked for tmax, tmin: an element needs 30 years of data to be eligible.
  • Somes Bar California set a daily record high maximum temperature of 35.0 C (95.0 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, 41.39 latitude, -123.50 longitude.
  • Elevation: 280 m (920 ft).
  • Period of record: 1988 to 2023, 36 years.
  • Eligible elements: tmax, tmin.

Daily Record Envelope and 2026

31 days at or beyond a record
Daily record high and record low at Somes Bar California, with 2026 drawn through them The band shows the record high and record low for each calendar day at Somes Bar California. The lines show the 2026 daily maximum and minimum. 31 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Somes Bar California. The lines show the 2026 daily maximum and minimum. 31 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Somes Bar California, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan22.2 C (72.0 F)-6.1 C (21.0 F)18.9 C (66.0 F)-2.2 C (28.0 F)
Feb27.2 C (81.0 F)-8.9 C (16.0 F)24.4 C (75.9 F)-1.1 C (30.0 F)
Mar32.2 C (90.0 F)-2.8 C (27.0 F)32.2 C (90.0 F)1.7 C (35.1 F)
Apr38.3 C (100.9 F)-2.2 C (28.0 F)30.0 C (86.0 F)1.1 C (34.0 F)
May42.2 C (108.0 F)0.0 C (32.0 F)36.1 C (97.0 F)4.4 C (39.9 F)
Jun46.7 C (116.1 F)2.2 C (36.0 F)41.7 C (107.1 F)5.6 C (42.1 F)
Jul46.1 C (115.0 F)6.1 C (43.0 F)40.0 C (104.0 F)10.0 C (50.0 F)
Aug46.7 C (116.1 F)6.7 C (44.1 F)45.0 C (113.0 F)10.6 C (51.1 F)
Sep46.1 C (115.0 F)2.8 C (37.0 F)38.3 C (100.9 F)8.3 C (46.9 F)
Oct40.6 C (105.1 F)-1.1 C (30.0 F)38.3 C (100.9 F)4.4 C (39.9 F)
Nov27.2 C (81.0 F)-4.4 C (24.1 F)n/an/a
Dec19.4 C (66.9 F)-11.1 C (12.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Somes Bar California by the year they were set 1,464 records at Somes Bar California still stand. 1990 holds the most, with 66. 0204060801989: 581990: 661991: 561992: 491993: 581994: 371995: 531996: 571997: 311998: 391999: 582000: 342001: 252002: 362003: 82004: 152005: 342006: 252007: 452008: 532009: 492010: 392011: 332012: 362013: 252014: 402015: 422016: 422017: 392018: 192019: 292020: 412021: 302022: 332023: 362024: 312025: 342026: 291989199319972001200520092013201720212025
1,464 records at Somes Bar California still stand. 1990 holds the most, with 66.
Standing records at Somes Bar California by the year they were set
Year setStanding records
198958
199066
199156
199249
199358
199437
199553
199657
199731
199839
199958
200034
200125
200236
20038
200415
200534
200625
200745
200853
200949
201039
201133
201236
201325
201440
201542
201642
201739
201819
201929
202041
202130
202233
202336
202431
202534
202629

Period of Record Coverage

1988 to 2026
Days with data per year at Somes Bar California 39 years of record at Somes Bar California, 1988 to 2026. 8 years have data for under 90 percent of days and are left out of rankings: 1988, 1998, 2002, 2003, 2004, 2006, 2013, 2026. 1988: 2 of 366 days1989: 365 of 365 days1990: 365 of 365 days1991: 365 of 365 days1992: 366 of 366 days1993: 351 of 365 days1994: 364 of 365 days1995: 362 of 365 days1996: 365 of 366 days1997: 365 of 365 days1998: 324 of 365 days1999: 365 of 365 days2000: 366 of 366 days2001: 343 of 365 days2002: 168 of 365 days2003: 71 of 365 days2004: 191 of 366 days2005: 350 of 365 days2006: 242 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 352 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 227 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 364 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 363 of 365 days2022: 365 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 365 of 365 days2026: 284 of 365 days19901995200020052010201520202025
39 years of record at Somes Bar California, 1988 to 2026. 8 years have data for under 90 percent of days and are left out of rankings: 1988, 1998, 2002, 2003, 2004, 2006, 2013, 2026.
Days with data per year at Somes Bar California
YearDays with dataShare of yearComplete
198821%No
1989365100%Yes
1990365100%Yes
1991365100%Yes
1992366100%Yes
199335196%Yes
1994364100%Yes
199536299%Yes
1996365100%Yes
1997365100%Yes
199832489%No
1999365100%Yes
2000366100%Yes
200134394%Yes
200216846%No
20037119%No
200419152%No
200535096%Yes
200624266%No
2007365100%Yes
2008366100%Yes
200935296%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
201322762%No
2014365100%Yes
2015365100%Yes
201636499%Yes
2017365100%Yes
2018365100%Yes
2019365100%Yes
2020366100%Yes
202136399%Yes
2022365100%Yes
2023365100%Yes
2024366100%Yes
2025365100%Yes
202628478%No

Latest Records

20
Latest records at Somes Bar California
DateStationRecordValueBeat old record byOld record stoodSignificance
9 October 2026Somes Bar California, USdaily high max (Provisional)35.0 C (95.0 F)0.6 C (1.1 F)29 years11 of 100 (Routine)
8 October 2026Somes Bar California, USdaily high max (Provisional)38.3 C (100.9 F)2.2 C (4.0 F)29 years14 of 100 (Routine)
8 October 2026Somes Bar California, USdaily high min (Provisional)13.9 C (57.0 F)1.1 C (2.0 F)11 years9 of 100 (Routine)
7 October 2026Somes Bar California, USdaily high max (Provisional)37.2 C (99.0 F)0.5 C (0.9 F)24 years10 of 100 (Routine)
7 October 2026Somes Bar California, USdaily high min (Tie, Provisional)13.9 C (57.0 F)tie21 years2 of 100 (Routine)
6 October 2026Somes Bar California, USdaily high min (Provisional)13.9 C (57.0 F)1.7 C (3.1 F)24 years16 of 100 (Routine)
6 October 2026Somes Bar California, USdaily high max (Provisional)37.2 C (99.0 F)1.6 C (2.9 F)24 years12 of 100 (Routine)
5 October 2026Somes Bar California, USdaily high min (Provisional)12.2 C (54.0 F)0.5 C (0.9 F)36 years14 of 100 (Routine)
5 October 2026Somes Bar California, USdaily high max (Provisional)36.7 C (98.1 F)0.6 C (1.1 F)35 years13 of 100 (Routine)
4 September 2026Somes Bar California, USdaily low max (Provisional)21.1 C (70.0 F)2.8 C (5.0 F)24 years15 of 100 (Routine)
3 September 2026Somes Bar California, USdaily low max (Provisional)18.9 C (66.0 F)3.9 C (7.0 F)25 years17 of 100 (Routine)
2 September 2026Somes Bar California, USdaily low max (Provisional)15.6 C (60.1 F)5.0 C (9.0 F)25 years19 of 100 (Routine)
7 August 2026Somes Bar California, USdaily high max (Tie)42.8 C (109.0 F)tie24 years2 of 100 (Routine)
6 August 2026Somes Bar California, USdaily high max42.8 C (109.0 F)1.1 C (2.0 F)36 years15 of 100 (Routine)
5 August 2026Somes Bar California, USdaily high max42.2 C (108.0 F)1.1 C (2.0 F)13 years9 of 100 (Routine)
4 August 2026Somes Bar California, USdaily high max (Tie)45.0 C (113.0 F)tie28 years2 of 100 (Routine)
20 July 2026Somes Bar California, USdaily high min20.0 C (68.0 F)2.2 C (4.0 F)36 years21 of 100 (Routine)
18 June 2026Somes Bar California, USdaily high min18.9 C (66.0 F)2.8 C (5.0 F)7 years14 of 100 (Routine)
17 June 2026Somes Bar California, USdaily high max41.7 C (107.1 F)3.4 C (6.1 F)25 years15 of 100 (Routine)
17 June 2026Somes Bar California, USdaily high min16.1 C (61.0 F)1.7 C (3.1 F)13 years12 of 100 (Routine)

Climate Trend

30 complete years, 1989 to 2025
Annual mean temperature at Somes Bar California as warming stripes, 1989 to 2025 One stripe for each of 30 complete years at Somes Bar California, 1989 to 2025. Blue stripes are years cooler than the station's own mean of 14.9 C (58.8 F); red stripes are warmer. The coolest year was 1993, at 13.9 C (57.1 F), and the warmest was 2014, at 16.3 C (61.4 F). The strongest colour marks a difference of 1.5 C (2.7 F). 1989: 14.0 C, -0.9 C from the station mean1990: 14.2 C, -0.7 C from the station mean1991: 15.0 C, +0.1 C from the station mean1992: 15.8 C, +0.9 C from the station mean1993: 13.9 C, -1.0 C from the station mean1994: 14.3 C, -0.6 C from the station mean1995: 15.2 C, +0.3 C from the station mean1996: 15.1 C, +0.2 C from the station mean1997: 14.8 C, -0.1 C from the station mean1999: 14.0 C, -0.9 C from the station mean2000: 14.7 C, -0.2 C from the station mean2005: 14.6 C, -0.3 C from the station mean2007: 14.5 C, -0.4 C from the station mean2008: 14.4 C, -0.5 C from the station mean2009: 14.7 C, -0.2 C from the station mean2010: 14.5 C, -0.4 C from the station mean2011: 14.4 C, -0.5 C from the station mean2012: 15.1 C, +0.2 C from the station mean2014: 16.3 C, +1.4 C from the station mean2015: 16.3 C, +1.4 C from the station mean2016: 15.5 C, +0.6 C from the station mean2017: 14.7 C, -0.2 C from the station mean2018: 15.1 C, +0.2 C from the station mean2019: 14.6 C, -0.3 C from the station mean2020: 15.4 C, +0.5 C from the station mean2021: 15.3 C, +0.4 C from the station mean2022: 14.9 C, 0.0 C from the station mean2023: 14.5 C, -0.4 C from the station mean2024: 15.4 C, +0.5 C from the station mean2025: 15.7 C, +0.8 C from the station mean19891995200020052010201520202025
One stripe for each of 30 complete years at Somes Bar California, 1989 to 2025. Blue stripes are years cooler than the station's own mean of 14.9 C (58.8 F); red stripes are warmer. The coolest year was 1993, at 13.9 C (57.1 F), and the warmest was 2014, at 16.3 C (61.4 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Somes Bar California as warming stripes, 1989 to 2025
YearAnnual mean temperatureDifference from the station mean
198914.0 C-0.91 C
199014.2 C-0.69 C
199115.0 C+0.06 C
199215.8 C+0.88 C
199313.9 C-0.95 C
199414.3 C-0.60 C
199515.2 C+0.33 C
199615.1 C+0.18 C
199714.8 C-0.12 C
199914.0 C-0.88 C
200014.7 C-0.22 C
200514.6 C-0.27 C
200714.5 C-0.37 C
200814.4 C-0.52 C
200914.7 C-0.23 C
201014.5 C-0.43 C
201114.4 C-0.48 C
201215.1 C+0.19 C
201416.3 C+1.42 C
201516.3 C+1.40 C
201615.5 C+0.61 C
201714.7 C-0.15 C
201815.1 C+0.21 C
201914.6 C-0.25 C
202015.4 C+0.52 C
202115.3 C+0.45 C
202214.9 C-0.01 C
202314.5 C-0.41 C
202415.4 C+0.50 C
202515.7 C+0.84 C

The annual mean temperature here has risen by 0.23 C (0.04 to 0.41) per decade over 1989 to 2025. In Fahrenheit: 0.4 F (0.1 to 0.7) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Somes Bar California
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.23 C (0.04 to 0.41) per decade0.4 F (0.1 to 0.7) per decade1989 to 202530Rise
Mean daily maximum0.3 C (0.1 to 0.5) per decade0.5 F (0.1 to 0.9) per decade1989 to 202530Rise
Mean daily minimum0.17 C (-0.03 to 0.37) per decade0.3 F (-0.1 to 0.7) per decade1989 to 202530Not clearly different from zero

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

1988 to 2026
Yearly extremes at Somes Bar California: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)46.7 C (116.1 F)200243.9 C (111.0 F)39
Coldest night (TNn)-11.1 C (12.0 F)1990-3.3 C (26.1 F)39

Hottest day (TXx)

Hottest day (TXx) at Somes Bar California by year The hottest day of the year at Somes Bar California, 1988 to 2026. The record is 46.7 C (116.1 F) in 2002, marked on the chart; the median year is 43.9 C (111.0 F). 010203040501990200020102020Record: 46.7 C (116.1 F) in 2002
The hottest day of the year at Somes Bar California, 1988 to 2026. The record is 46.7 C (116.1 F) in 2002, marked on the chart; the median year is 43.9 C (111.0 F).
Hottest day (TXx) at Somes Bar California by year
YearHottest day (TXx)
19888.9 C (48.0 F)
198939.4 C (102.9 F)
199043.3 C (109.9 F)
199144.4 C (111.9 F)
199243.9 C (111.0 F)
199343.9 C (111.0 F)
199441.7 C (107.1 F)
199542.8 C (109.0 F)
199643.9 C (111.0 F)
199742.2 C (108.0 F)
199846.1 C (115.0 F)
199945.6 C (114.1 F)
200043.3 C (109.9 F)
200143.3 C (109.9 F)
200246.7 C (116.1 F)
200322.2 C (72.0 F)
200443.3 C (109.9 F)
200544.4 C (111.9 F)
200645.0 C (113.0 F)
200742.2 C (108.0 F)
200843.9 C (111.0 F)
200945.0 C (113.0 F)
201043.3 C (109.9 F)
201143.9 C (111.0 F)
201246.1 C (115.0 F)
201345.0 C (113.0 F)
201443.3 C (109.9 F)
201545.6 C (114.1 F)
201645.0 C (113.0 F)
201746.7 C (116.1 F)
201842.2 C (108.0 F)
201943.3 C (109.9 F)
202043.9 C (111.0 F)
202146.7 C (116.1 F)
202243.9 C (111.0 F)
202343.3 C (109.9 F)
202446.1 C (115.0 F)
202545.6 C (114.1 F)
202645.0 C (113.0 F)

Coldest night (TNn)

Coldest night (TNn) at Somes Bar California by year The coldest night of the year at Somes Bar California, 1988 to 2026. The record is -11.1 C (12.0 F) in 1990, marked on the chart; the median year is -3.3 C (26.1 F). -15-10-5051990200020102020Record: -11.1 C (12.0 F) in 1990
The coldest night of the year at Somes Bar California, 1988 to 2026. The record is -11.1 C (12.0 F) in 1990, marked on the chart; the median year is -3.3 C (26.1 F).
Coldest night (TNn) at Somes Bar California by year
YearColdest night (TNn)
19880.6 C (33.1 F)
1989-8.9 C (16.0 F)
1990-11.1 C (12.0 F)
1991-5.0 C (23.0 F)
1992-2.8 C (27.0 F)
1993-2.8 C (27.0 F)
1994-3.3 C (26.1 F)
1995-1.7 C (28.9 F)
1996-2.2 C (28.0 F)
1997-5.0 C (23.0 F)
1998-8.9 C (16.0 F)
1999-2.2 C (28.0 F)
2000-1.1 C (30.0 F)
2001-3.9 C (25.0 F)
2002-2.8 C (27.0 F)
2003-2.8 C (27.0 F)
2004-2.2 C (28.0 F)
2005-2.8 C (27.0 F)
2006-3.3 C (26.1 F)
2007-5.6 C (21.9 F)
2008-3.3 C (26.1 F)
2009-6.7 C (19.9 F)
2010-2.2 C (28.0 F)
2011-3.3 C (26.1 F)
2012-3.3 C (26.1 F)
2013-3.9 C (25.0 F)
2014-3.3 C (26.1 F)
2015-4.4 C (24.1 F)
2016-4.4 C (24.1 F)
2017-6.1 C (21.0 F)
2018-3.3 C (26.1 F)
2019-2.8 C (27.0 F)
2020-3.3 C (26.1 F)
2021-2.8 C (27.0 F)
2022-4.4 C (24.1 F)
2023-3.9 C (25.0 F)
2024-2.2 C (28.0 F)
2025-3.9 C (25.0 F)
2026-2.2 C (28.0 F)

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

30 years with a frost

Across 30 years with a frost, the median last spring frost at Somes Bar California falls on 2 April and the median first autumn frost on 19 November, which leaves a median of 235 days between them.

Fitted over all years, the growing season changes by +2.2 days per decade at this station.

Frost dates and growing season at Somes Bar California
MeasureMedian, all yearsEarliest periodRecent period (1989 to 2025)Recent against earliestFitted trend
Last spring frost2 Apriln/a2 Apriln/a-0.7 days per decade
First autumn frost19 Novembern/a19 Novembern/a+1.5 days per decade
Growing days235 daysn/a235 daysn/a+2.2 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.

Download the Data

  • Data for Somes Bar California standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Somes Bar California threshold days by year: CSV or JSON. Field meanings are on the data page.

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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-13).