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Built 2026-10-18 (18 October 2026)

Cohasset California Weather Records (USR0000CCOH)

Record envelope, standing records and threshold days for Cohasset California (USR0000CCOH), California, United States, with 34 years of record.

Key Facts for Cohasset California

  • Cohasset California (USR0000CCOH) is a weather station in California, United States at 39.87 latitude and -121.77 longitude, 528 m (1,733 ft) above sea level.
  • The station reports from 1990 to 2023, 34 years of record.
  • 1,464 records set at Cohasset California still stand.
  • Records are tracked for tmax, tmin: an element needs 30 years of data to be eligible.
  • Cohasset California set a daily record high minimum temperature of 27.8 C (82.0 F) on 8 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, 39.87 latitude, -121.77 longitude.
  • Elevation: 528 m (1,733 ft).
  • Period of record: 1990 to 2023, 34 years.
  • Eligible elements: tmax, tmin.

Daily Record Envelope and 2026

13 days at or beyond a record
Daily record high and record low at Cohasset California, with 2026 drawn through them The band shows the record high and record low for each calendar day at Cohasset California. The lines show the 2026 daily maximum and minimum. 13 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 Cohasset California. The lines show the 2026 daily maximum and minimum. 13 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Cohasset California, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan26.7 C (80.1 F)-5.6 C (21.9 F)24.4 C (75.9 F)3.9 C (39.0 F)
Feb27.2 C (81.0 F)-2.2 C (28.0 F)22.2 C (72.0 F)0.0 C (32.0 F)
Mar30.6 C (87.1 F)-1.1 C (30.0 F)30.6 C (87.1 F)7.2 C (45.0 F)
Apr34.4 C (93.9 F)0.6 C (33.1 F)27.2 C (81.0 F)5.6 C (42.1 F)
May38.3 C (100.9 F)2.2 C (36.0 F)31.1 C (88.0 F)8.9 C (48.0 F)
Jun41.7 C (107.1 F)5.6 C (42.1 F)37.2 C (99.0 F)13.3 C (55.9 F)
Jul43.3 C (109.9 F)8.9 C (48.0 F)37.2 C (99.0 F)16.7 C (62.1 F)
Aug43.9 C (111.0 F)9.4 C (48.9 F)38.9 C (102.0 F)14.4 C (57.9 F)
Sep44.4 C (111.9 F)6.7 C (44.1 F)37.2 C (99.0 F)11.1 C (52.0 F)
Oct38.9 C (102.0 F)3.9 C (39.0 F)36.1 C (97.0 F)12.2 C (54.0 F)
Nov29.4 C (84.9 F)-0.6 C (30.9 F)n/an/a
Dec28.3 C (82.9 F)-8.9 C (16.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Cohasset California by the year they were set 1,464 records at Cohasset California still stand. 1991 holds the most, with 71. 0204060801990: 451991: 711992: 341993: 341994: 351995: 421996: 411997: 271998: 371999: 542000: 552001: 432002: 372003: 492004: 462005: 352006: 362007: 362008: 542009: 512010: 492011: 462012: 332013: 302014: 322015: 342016: 252017: 422018: 192019: 402020: 302021: 452022: 522023: 292024: 402025: 332026: 231990199419982002200620102014201820222026
1,464 records at Cohasset California still stand. 1991 holds the most, with 71.
Standing records at Cohasset California by the year they were set
Year setStanding records
199045
199171
199234
199334
199435
199542
199641
199727
199837
199954
200055
200143
200237
200349
200446
200535
200636
200736
200854
200951
201049
201146
201233
201330
201432
201534
201625
201742
201819
201940
202030
202145
202252
202329
202440
202533
202623

All-Time Record Progression

1 new records
When Cohasset California set new all-time records 1 all-time records were set at Cohasset California between 6 September 2022 and 6 September 2022. Each dot is a new record. Record high maximum temperature6 September 2022: Record high maximum temperature 44.4 C (111.9 F)
1 all-time records were set at Cohasset California between 6 September 2022 and 6 September 2022. Each dot is a new record.
When Cohasset California set new all-time records
DateKindDetail
2022-09-06Record high maximum temperatureRecord high maximum temperature 44.4 C (111.9 F)

Period of Record Coverage

1990 to 2026
Days with data per year at Cohasset California 37 years of record at Cohasset California, 1990 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1990, 2026. 1990: 238 of 365 days1991: 354 of 365 days1992: 361 of 366 days1993: 359 of 365 days1994: 350 of 365 days1995: 339 of 365 days1996: 362 of 366 days1997: 363 of 365 days1998: 365 of 365 days1999: 364 of 365 days2000: 365 of 366 days2001: 365 of 365 days2002: 365 of 365 days2003: 364 of 365 days2004: 365 of 366 days2005: 365 of 365 days2006: 364 of 365 days2007: 364 of 365 days2008: 366 of 366 days2009: 364 of 365 days2010: 362 of 365 days2011: 361 of 365 days2012: 350 of 366 days2013: 364 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 365 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 330 of 365 days2020: 365 of 366 days2021: 365 of 365 days2022: 365 of 365 days2023: 364 of 365 days2024: 352 of 366 days2025: 365 of 365 days2026: 284 of 365 days19901995200020052010201520202025
37 years of record at Cohasset California, 1990 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1990, 2026.
Days with data per year at Cohasset California
YearDays with dataShare of yearComplete
199023865%No
199135497%Yes
199236199%Yes
199335998%Yes
199435096%Yes
199533993%Yes
199636299%Yes
199736399%Yes
1998365100%Yes
1999364100%Yes
2000365100%Yes
2001365100%Yes
2002365100%Yes
2003364100%Yes
2004365100%Yes
2005365100%Yes
2006364100%Yes
2007364100%Yes
2008366100%Yes
2009364100%Yes
201036299%Yes
201136199%Yes
201235096%Yes
2013364100%Yes
2014365100%Yes
2015365100%Yes
2016365100%Yes
2017365100%Yes
2018365100%Yes
201933090%Yes
2020365100%Yes
2021365100%Yes
2022365100%Yes
2023364100%Yes
202435296%Yes
2025365100%Yes
202628478%No

Latest Records

20
Latest records at Cohasset California
DateStationRecordValueBeat old record byOld record stoodSignificance
8 October 2026Cohasset California, USdaily high min (Provisional)27.8 C (82.0 F)0.6 C (1.1 F)1 year4 of 100 (Routine)
8 October 2026Cohasset California, USdaily high max (Tie, Provisional)35.6 C (96.1 F)tie29 years2 of 100 (Routine)
7 October 2026Cohasset California, USdaily high min (Provisional)27.2 C (81.0 F)2.2 C (4.0 F)1 year7 of 100 (Routine)
7 October 2026Cohasset California, USdaily high max (Tie, Provisional)35.6 C (96.1 F)tie29 years2 of 100 (Routine)
5 October 2026Cohasset California, USdaily high max (Provisional)35.6 C (96.1 F)0.6 C (1.1 F)1 year4 of 100 (Routine)
5 October 2026Cohasset California, USdaily high min (Tie, Provisional)26.1 C (79.0 F)tie1 year0 of 100 (Routine)
4 October 2026Cohasset California, USdaily high min (Provisional)26.1 C (79.0 F)1.7 C (3.1 F)35 years16 of 100 (Routine)
4 October 2026Cohasset California, USdaily high max (Tie, Provisional)33.9 C (93.0 F)tie35 years3 of 100 (Routine)
3 October 2026Cohasset California, USdaily high max (Provisional)35.6 C (96.1 F)0.6 C (1.1 F)24 years11 of 100 (Routine)
5 September 2026Cohasset California, USdaily low max (Tie, Provisional)24.4 C (75.9 F)tie25 years2 of 100 (Routine)
3 September 2026Cohasset California, USdaily low max (Provisional)17.2 C (63.0 F)4.5 C (8.1 F)25 years19 of 100 (Routine)
3 September 2026Cohasset California, USdaily low min (Provisional)12.8 C (55.0 F)0.5 C (0.9 F)33 years14 of 100 (Routine)
2 September 2026Cohasset California, USdaily low max (Tie, Provisional)20.0 C (68.0 F)tie25 years2 of 100 (Routine)
14 August 2026Cohasset California, USdaily low max26.7 C (80.1 F)1.1 C (2.0 F)27 years14 of 100 (Routine)
3 August 2026Cohasset California, USdaily high min (Tie)28.3 C (82.9 F)tie28 years2 of 100 (Routine)
15 July 2026Cohasset California, USdaily high min27.8 C (82.0 F)1.1 C (2.0 F)20 years11 of 100 (Routine)
5 April 2026Cohasset California, USdaily high min17.8 C (64.0 F)2.2 C (4.0 F)19 years12 of 100 (Routine)
4 April 2026Cohasset California, USdaily high max25.0 C (77.0 F)1.1 C (2.0 F)31 years14 of 100 (Routine)
4 April 2026Cohasset California, USdaily high min15.6 C (60.1 F)0.6 C (1.1 F)19 years9 of 100 (Routine)
30 March 2026Cohasset California, USdaily high min18.3 C (64.9 F)0.5 C (0.9 F)24 years11 of 100 (Routine)

Climate Trend

32 complete years, 1991 to 2025
Annual mean temperature at Cohasset California as warming stripes, 1991 to 2025 One stripe for each of 32 complete years at Cohasset California, 1991 to 2025. Blue stripes are years cooler than the station's own mean of 17.5 C (63.5 F); red stripes are warmer. The coolest year was 1998, at 15.9 C (60.7 F), and the warmest was 2020, at 18.7 C (65.6 F). The strongest colour marks a difference of 1.6 C (2.9 F). 1991: 16.7 C, -0.8 C from the station mean1992: 17.6 C, +0.1 C from the station mean1993: 16.5 C, -1.0 C from the station mean1996: 17.3 C, -0.2 C from the station mean1997: 17.4 C, -0.1 C from the station mean1998: 15.9 C, -1.6 C from the station mean1999: 17.0 C, -0.6 C from the station mean2000: 17.3 C, -0.2 C from the station mean2001: 18.1 C, +0.6 C from the station mean2002: 17.9 C, +0.4 C from the station mean2003: 17.7 C, +0.2 C from the station mean2004: 17.8 C, +0.3 C from the station mean2005: 17.4 C, -0.1 C from the station mean2006: 16.9 C, -0.6 C from the station mean2007: 17.1 C, -0.4 C from the station mean2008: 17.4 C, -0.1 C from the station mean2009: 17.3 C, -0.2 C from the station mean2010: 16.1 C, -1.4 C from the station mean2011: 16.2 C, -1.3 C from the station mean2012: 17.3 C, -0.2 C from the station mean2013: 17.9 C, +0.4 C from the station mean2014: 18.6 C, +1.1 C from the station mean2015: 18.4 C, +0.9 C from the station mean2016: 17.6 C, +0.1 C from the station mean2017: 18.0 C, +0.5 C from the station mean2018: 18.5 C, +1.0 C from the station mean2020: 18.7 C, +1.2 C from the station mean2021: 18.2 C, +0.7 C from the station mean2022: 18.5 C, +1.0 C from the station mean2023: 16.9 C, -0.6 C from the station mean2024: 18.2 C, +0.7 C from the station mean2025: 17.9 C, +0.4 C from the station mean19911995200020052010201520202025
One stripe for each of 32 complete years at Cohasset California, 1991 to 2025. Blue stripes are years cooler than the station's own mean of 17.5 C (63.5 F); red stripes are warmer. The coolest year was 1998, at 15.9 C (60.7 F), and the warmest was 2020, at 18.7 C (65.6 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at Cohasset California as warming stripes, 1991 to 2025
YearAnnual mean temperatureDifference from the station mean
199116.7 C-0.83 C
199217.6 C+0.13 C
199316.5 C-0.99 C
199617.3 C-0.24 C
199717.4 C-0.11 C
199815.9 C-1.57 C
199917.0 C-0.56 C
200017.3 C-0.23 C
200118.1 C+0.57 C
200217.9 C+0.43 C
200317.7 C+0.20 C
200417.8 C+0.27 C
200517.4 C-0.15 C
200616.9 C-0.64 C
200717.1 C-0.40 C
200817.4 C-0.11 C
200917.3 C-0.24 C
201016.1 C-1.39 C
201116.2 C-1.31 C
201217.3 C-0.19 C
201317.9 C+0.40 C
201418.6 C+1.13 C
201518.4 C+0.91 C
201617.6 C+0.12 C
201718.0 C+0.45 C
201818.5 C+1.01 C
202018.7 C+1.18 C
202118.2 C+0.71 C
202218.5 C+0.98 C
202316.9 C-0.60 C
202418.2 C+0.67 C
202517.9 C+0.38 C

The annual mean temperature here has risen by 0.4 C (0.1 to 0.6) per decade over 1991 to 2025. In Fahrenheit: 0.7 F (0.2 to 1.1) per decade. The slope is a straight line fitted to 32 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Cohasset California
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.4 C (0.1 to 0.6) per decade0.7 F (0.2 to 1.1) per decade1991 to 202532Rise
Mean daily maximum0.2 C (-0.1 to 0.5) per decade0.3 F (-0.2 to 0.9) per decade1991 to 202532Not clearly different from zero
Mean daily minimum0.6 C (0.4 to 0.8) per decade1.0 F (0.6 to 1.4) per decade1991 to 202532Rise

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

1990 to 2026
Yearly extremes at Cohasset California: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)44.4 C (111.9 F)202241.1 C (106.0 F)37
Coldest night (TNn)-8.9 C (16.0 F)1990-0.6 C (30.9 F)37

Hottest day (TXx)

Hottest day (TXx) at Cohasset California by year The hottest day of the year at Cohasset California, 1990 to 2026. The record is 44.4 C (111.9 F) in 2022, marked on the chart; the median year is 41.1 C (106.0 F). 38404244461990200020102020Record: 44.4 C (111.9 F) in 2022
The hottest day of the year at Cohasset California, 1990 to 2026. The record is 44.4 C (111.9 F) in 2022, marked on the chart; the median year is 41.1 C (106.0 F).
Hottest day (TXx) at Cohasset California by year
YearHottest day (TXx)
199043.9 C (111.0 F)
199140.6 C (105.1 F)
199241.1 C (106.0 F)
199341.7 C (107.1 F)
199439.4 C (102.9 F)
199540.6 C (105.1 F)
199641.1 C (106.0 F)
199740.6 C (105.1 F)
199842.8 C (109.0 F)
199941.7 C (107.1 F)
200040.6 C (105.1 F)
200140.6 C (105.1 F)
200242.2 C (108.0 F)
200343.3 C (109.9 F)
200440.0 C (104.0 F)
200541.7 C (107.1 F)
200641.7 C (107.1 F)
200739.4 C (102.9 F)
200841.7 C (107.1 F)
200940.6 C (105.1 F)
201041.7 C (107.1 F)
201139.4 C (102.9 F)
201241.1 C (106.0 F)
201342.2 C (108.0 F)
201440.0 C (104.0 F)
201540.0 C (104.0 F)
201639.4 C (102.9 F)
201741.7 C (107.1 F)
201840.6 C (105.1 F)
201939.4 C (102.9 F)
202041.7 C (107.1 F)
202142.2 C (108.0 F)
202244.4 C (111.9 F)
202341.1 C (106.0 F)
202443.3 C (109.9 F)
202538.9 C (102.0 F)
202638.9 C (102.0 F)

Coldest night (TNn)

Coldest night (TNn) at Cohasset California by year The coldest night of the year at Cohasset California, 1990 to 2026. The record is -8.9 C (16.0 F) in 1990, marked on the chart; the median year is -0.6 C (30.9 F). -10-5051990200020102020Record: -8.9 C (16.0 F) in 1990
The coldest night of the year at Cohasset California, 1990 to 2026. The record is -8.9 C (16.0 F) in 1990, marked on the chart; the median year is -0.6 C (30.9 F).
Coldest night (TNn) at Cohasset California by year
YearColdest night (TNn)
1990-8.9 C (16.0 F)
1991-3.3 C (26.1 F)
1992-2.8 C (27.0 F)
1993-5.0 C (23.0 F)
1994-0.6 C (30.9 F)
1995-0.6 C (30.9 F)
1996-1.7 C (28.9 F)
1997-5.6 C (21.9 F)
1998-5.6 C (21.9 F)
19990.6 C (33.1 F)
20001.1 C (34.0 F)
20010.6 C (33.1 F)
2002-1.7 C (28.9 F)
20030.6 C (33.1 F)
20040.0 C (32.0 F)
2005-2.2 C (28.0 F)
2006-0.6 C (30.9 F)
2007-1.7 C (28.9 F)
2008-1.1 C (30.0 F)
2009-2.2 C (28.0 F)
2010-0.6 C (30.9 F)
2011-2.8 C (27.0 F)
20120.0 C (32.0 F)
2013-2.2 C (28.0 F)
20141.1 C (34.0 F)
20150.6 C (33.1 F)
20160.0 C (32.0 F)
20170.0 C (32.0 F)
2018-1.1 C (30.0 F)
20190.0 C (32.0 F)
20201.7 C (35.1 F)
2021-1.7 C (28.9 F)
20220.0 C (32.0 F)
2023-1.7 C (28.9 F)
20240.6 C (33.1 F)
20250.0 C (32.0 F)
20260.0 C (32.0 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.

Download the Data

  • Data for Cohasset California standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Cohasset 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-16).