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Built 2026-10-16 (16 October 2026)

Hernandez California Weather Records (USR0000CHER)

Record envelope, standing records and threshold days for Hernandez California (USR0000CHER), California, United States, with 34 years of record.

Key Facts for Hernandez California

  • Hernandez California (USR0000CHER) is a weather station in California, United States at 36.38 latitude and -120.86 longitude, 1,138 m (3,733 ft) above sea level.
  • The station reports from 1990 to 2023, 34 years of record.
  • 1,464 records set at Hernandez California still stand.
  • Records are tracked for tmax, tmin: an element needs 30 years of data to be eligible.
  • Hernandez California tied a daily record high minimum temperature of 23.9 C (75.0 F) on 5 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, 36.38 latitude, -120.86 longitude.
  • Elevation: 1,138 m (3,733 ft).
  • Period of record: 1990 to 2023, 34 years.
  • Eligible elements: tmax, tmin.

Daily Record Envelope and 2026

27 days at or beyond a record
Daily record high and record low at Hernandez California, with 2026 drawn through them The band shows the record high and record low for each calendar day at Hernandez California. The lines show the 2026 daily maximum and minimum. 27 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 Hernandez California. The lines show the 2026 daily maximum and minimum. 27 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Hernandez California, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan26.7 C (80.1 F)-7.2 C (19.0 F)25.6 C (78.1 F)0.0 C (32.0 F)
Feb25.6 C (78.1 F)-5.6 C (21.9 F)23.9 C (75.0 F)-2.2 C (28.0 F)
Mar29.4 C (84.9 F)-8.3 C (17.1 F)29.4 C (84.9 F)2.8 C (37.0 F)
Apr31.1 C (88.0 F)-4.4 C (24.1 F)26.1 C (79.0 F)2.2 C (36.0 F)
May35.6 C (96.1 F)-1.7 C (28.9 F)30.6 C (87.1 F)3.3 C (37.9 F)
Jun38.3 C (100.9 F)0.6 C (33.1 F)33.9 C (93.0 F)9.4 C (48.9 F)
Jul40.0 C (104.0 F)6.1 C (43.0 F)34.4 C (93.9 F)12.2 C (54.0 F)
Aug40.0 C (104.0 F)5.6 C (42.1 F)37.2 C (99.0 F)10.0 C (50.0 F)
Sep40.6 C (105.1 F)3.3 C (37.9 F)35.0 C (95.0 F)7.2 C (45.0 F)
Oct37.2 C (99.0 F)-1.7 C (28.9 F)35.0 C (95.0 F)7.8 C (46.0 F)
Nov30.0 C (86.0 F)-4.4 C (24.1 F)n/an/a
Dec25.6 C (78.1 F)-10.0 C (14.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Hernandez California by the year they were set 1,464 records at Hernandez California still stand. 2002 holds the most, with 59. 02040601990: 421991: 451992: 311993: 371994: 391995: 361996: 381997: 151998: 451999: 552000: 492001: 462002: 592003: 382004: 402005: 262006: 502007: 452008: 382009: 452010: 532011: 352012: 352013: 392014: 262015: 422016: 292017: 532018: 162019: 422020: 422021: 432022: 442023: 342024: 402025: 322026: 401990199419982002200620102014201820222026
1,464 records at Hernandez California still stand. 2002 holds the most, with 59.
Standing records at Hernandez California by the year they were set
Year setStanding records
199042
199145
199231
199337
199439
199536
199638
199715
199845
199955
200049
200146
200259
200338
200440
200526
200650
200745
200838
200945
201053
201135
201235
201339
201426
201542
201629
201753
201816
201942
202042
202143
202244
202334
202440
202532
202640

All-Time Record Progression

2 new records
When Hernandez California set new all-time records 2 all-time records were set at Hernandez California between 6 September 2020 and 6 September 2022. Each dot is a new record. Record high minimum temperatureRecord high maximum temperature6 September 2020: Record high minimum temperature 29.4 C (84.9 F)6 September 2022: Record high maximum temperature 40.6 C (105.1 F)2020
2 all-time records were set at Hernandez California between 6 September 2020 and 6 September 2022. Each dot is a new record.
When Hernandez California set new all-time records
DateKindDetail
2020-09-06Record high minimum temperatureRecord high minimum temperature 29.4 C (84.9 F)
2022-09-06Record high maximum temperatureRecord high maximum temperature 40.6 C (105.1 F)

Period of Record Coverage

1990 to 2026
Days with data per year at Hernandez California 37 years of record at Hernandez California, 1990 to 2026. 3 years have data for under 90 percent of days and are left out of rankings: 1990, 1991, 2026. 1990: 211 of 365 days1991: 292 of 365 days1992: 365 of 366 days1993: 362 of 365 days1994: 363 of 365 days1995: 365 of 365 days1996: 359 of 366 days1997: 349 of 365 days1998: 365 of 365 days1999: 364 of 365 days2000: 366 of 366 days2001: 363 of 365 days2002: 354 of 365 days2003: 365 of 365 days2004: 365 of 366 days2005: 362 of 365 days2006: 364 of 365 days2007: 363 of 365 days2008: 364 of 366 days2009: 363 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 363 of 366 days2013: 364 of 365 days2014: 363 of 365 days2015: 362 of 365 days2016: 366 of 366 days2017: 364 of 365 days2018: 365 of 365 days2019: 356 of 365 days2020: 366 of 366 days2021: 363 of 365 days2022: 365 of 365 days2023: 363 of 365 days2024: 365 of 366 days2025: 365 of 365 days2026: 284 of 365 days19901995200020052010201520202025
37 years of record at Hernandez California, 1990 to 2026. 3 years have data for under 90 percent of days and are left out of rankings: 1990, 1991, 2026.
Days with data per year at Hernandez California
YearDays with dataShare of yearComplete
199021158%No
199129280%No
1992365100%Yes
199336299%Yes
199436399%Yes
1995365100%Yes
199635998%Yes
199734996%Yes
1998365100%Yes
1999364100%Yes
2000366100%Yes
200136399%Yes
200235497%Yes
2003365100%Yes
2004365100%Yes
200536299%Yes
2006364100%Yes
200736399%Yes
200836499%Yes
200936399%Yes
2010365100%Yes
2011365100%Yes
201236399%Yes
2013364100%Yes
201436399%Yes
201536299%Yes
2016366100%Yes
2017364100%Yes
2018365100%Yes
201935698%Yes
2020366100%Yes
202136399%Yes
2022365100%Yes
202336399%Yes
2024365100%Yes
2025365100%Yes
202628478%No

Latest Records

20
Latest records at Hernandez California
DateStationRecordValueBeat old record byOld record stoodSignificance
5 October 2026Hernandez California, USdaily high min (Tie, Provisional)23.9 C (75.0 F)tie1 year0 of 100 (Routine)
4 October 2026Hernandez California, USdaily high max (Tie, Provisional)33.3 C (91.9 F)tie1 year0 of 100 (Routine)
4 September 2026Hernandez California, USdaily low max (Tie, Provisional)19.4 C (66.9 F)tie9 years1 of 100 (Routine)
1 September 2026Hernandez California, USdaily low min (Provisional)7.2 C (45.0 F)0.6 C (1.1 F)25 years11 of 100 (Routine)
26 August 2026Hernandez California, USdaily high min (Tie, Provisional)25.0 C (77.0 F)tie8 years1 of 100 (Routine)
21 August 2026Hernandez California, USdaily high min (Tie, Provisional)23.3 C (73.9 F)tie16 years2 of 100 (Routine)
14 August 2026Hernandez California, USdaily low min10.0 C (50.0 F)2.2 C (4.0 F)32 years17 of 100 (Routine)
13 August 2026Hernandez California, USdaily low min (Tie)13.9 C (57.0 F)tie32 years3 of 100 (Routine)
9 August 2026Hernandez California, USdaily high max37.2 C (99.0 F)0.5 C (0.9 F)29 years12 of 100 (Routine)
9 August 2026Hernandez California, USdaily high min (Tie)25.6 C (78.1 F)tie13 years1 of 100 (Routine)
8 August 2026Hernandez California, USdaily high max35.6 C (96.1 F)0.6 C (1.1 F)29 years12 of 100 (Routine)
13 June 2026Hernandez California, USdaily high max (Tie)33.3 C (91.9 F)tie8 years1 of 100 (Routine)
13 June 2026Hernandez California, USdaily high min (Tie)22.2 C (72.0 F)tie11 years1 of 100 (Routine)
12 June 2026Hernandez California, USdaily high min23.3 C (73.9 F)1.6 C (2.9 F)7 years8 of 100 (Routine)
12 June 2026Hernandez California, USdaily high max (Tie)32.8 C (91.0 F)tie8 years1 of 100 (Routine)
28 May 2026Hernandez California, USdaily low max7.8 C (46.0 F)1.1 C (2.0 F)28 years12 of 100 (Routine)
11 May 2026Hernandez California, USdaily high max (Tie)30.6 C (87.1 F)tie24 years2 of 100 (Routine)
11 May 2026Hernandez California, USdaily high min (Tie)19.4 C (66.9 F)tie28 years2 of 100 (Routine)
10 May 2026Hernandez California, USdaily high min18.9 C (66.0 F)0.6 C (1.1 F)24 years11 of 100 (Routine)
5 April 2026Hernandez California, USdaily high max25.0 C (77.0 F)3.3 C (5.9 F)19 years13 of 100 (Routine)

Climate Trend

34 complete years, 1992 to 2025
Annual mean temperature at Hernandez California as warming stripes, 1992 to 2025 One stripe for each of 34 complete years at Hernandez California, 1992 to 2025. Blue stripes are years cooler than the station's own mean of 15.2 C (59.4 F); red stripes are warmer. The coolest year was 1998, at 13.1 C (55.6 F), and the warmest was 2014, at 16.7 C (62.0 F). The strongest colour marks a difference of 2.1 C (3.8 F). 1992: 15.0 C, -0.3 C from the station mean1993: 14.1 C, -1.1 C from the station mean1994: 14.2 C, -1.0 C from the station mean1995: 14.6 C, -0.6 C from the station mean1996: 15.3 C, +0.1 C from the station mean1997: 15.2 C, -0.1 C from the station mean1998: 13.1 C, -2.1 C from the station mean1999: 14.9 C, -0.4 C from the station mean2000: 14.9 C, -0.3 C from the station mean2001: 15.4 C, +0.2 C from the station mean2002: 15.9 C, +0.7 C from the station mean2003: 15.7 C, +0.5 C from the station mean2004: 15.3 C, +0.1 C from the station mean2005: 15.2 C, 0.0 C from the station mean2006: 14.7 C, -0.5 C from the station mean2007: 14.8 C, -0.4 C from the station mean2008: 15.2 C, 0.0 C from the station mean2009: 15.0 C, -0.2 C from the station mean2010: 13.8 C, -1.4 C from the station mean2011: 14.2 C, -1.1 C from the station mean2012: 15.4 C, +0.2 C from the station mean2013: 15.8 C, +0.6 C from the station mean2014: 16.7 C, +1.4 C from the station mean2015: 16.0 C, +0.8 C from the station mean2016: 15.7 C, +0.5 C from the station mean2017: 15.9 C, +0.6 C from the station mean2018: 15.8 C, +0.6 C from the station mean2019: 14.5 C, -0.7 C from the station mean2020: 16.2 C, +1.0 C from the station mean2021: 16.0 C, +0.8 C from the station mean2022: 16.3 C, +1.1 C from the station mean2023: 14.3 C, -0.9 C from the station mean2024: 16.0 C, +0.8 C from the station mean2025: 15.9 C, +0.7 C from the station mean19921995200020052010201520202025
One stripe for each of 34 complete years at Hernandez California, 1992 to 2025. Blue stripes are years cooler than the station's own mean of 15.2 C (59.4 F); red stripes are warmer. The coolest year was 1998, at 13.1 C (55.6 F), and the warmest was 2014, at 16.7 C (62.0 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Hernandez California as warming stripes, 1992 to 2025
YearAnnual mean temperatureDifference from the station mean
199215.0 C-0.25 C
199314.1 C-1.12 C
199414.2 C-1.01 C
199514.6 C-0.63 C
199615.3 C+0.13 C
199715.2 C-0.05 C
199813.1 C-2.07 C
199914.9 C-0.35 C
200014.9 C-0.26 C
200115.4 C+0.18 C
200215.9 C+0.74 C
200315.7 C+0.47 C
200415.3 C+0.09 C
200515.2 C-0.02 C
200614.7 C-0.49 C
200714.8 C-0.41 C
200815.2 C-0.03 C
200915.0 C-0.24 C
201013.8 C-1.40 C
201114.2 C-1.05 C
201215.4 C+0.16 C
201315.8 C+0.60 C
201416.7 C+1.45 C
201516.0 C+0.82 C
201615.7 C+0.54 C
201715.9 C+0.65 C
201815.8 C+0.62 C
201914.5 C-0.69 C
202016.2 C+1.03 C
202116.0 C+0.84 C
202216.3 C+1.09 C
202314.3 C-0.92 C
202416.0 C+0.84 C
202515.9 C+0.74 C

The annual mean temperature here has risen by 0.4 C (0.2 to 0.7) per decade over 1992 to 2025. In Fahrenheit: 0.7 F (0.3 to 1.2) per decade. The slope is a straight line fitted to 34 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Hernandez California
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.4 C (0.2 to 0.7) per decade0.7 F (0.3 to 1.2) per decade1992 to 202534Rise
Mean daily maximum0.33 C (0.04 to 0.62) per decade0.6 F (0.1 to 1.1) per decade1992 to 202534Rise
Mean daily minimum0.5 C (0.2 to 0.7) per decade0.9 F (0.4 to 1.3) per decade1992 to 202534Rise

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 Hernandez California: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)40.6 C (105.1 F)202237.8 C (100.0 F)37
Coldest night (TNn)-10.0 C (14.0 F)1990-3.9 C (25.0 F)37

Hottest day (TXx)

Hottest day (TXx) at Hernandez California by year The hottest day of the year at Hernandez California, 1990 to 2026. The record is 40.6 C (105.1 F) in 2022, marked on the chart; the median year is 37.8 C (100.0 F). 34363840421990200020102020Record: 40.6 C (105.1 F) in 2022
The hottest day of the year at Hernandez California, 1990 to 2026. The record is 40.6 C (105.1 F) in 2022, marked on the chart; the median year is 37.8 C (100.0 F).
Hottest day (TXx) at Hernandez California by year
YearHottest day (TXx)
199034.4 C (93.9 F)
199134.4 C (93.9 F)
199236.7 C (98.1 F)
199336.7 C (98.1 F)
199435.6 C (96.1 F)
199535.6 C (96.1 F)
199637.2 C (99.0 F)
199738.3 C (100.9 F)
199840.0 C (104.0 F)
199937.8 C (100.0 F)
200038.3 C (100.9 F)
200138.3 C (100.9 F)
200239.4 C (102.9 F)
200337.8 C (100.0 F)
200436.7 C (98.1 F)
200537.2 C (99.0 F)
200639.4 C (102.9 F)
200738.9 C (102.0 F)
200838.9 C (102.0 F)
200937.8 C (100.0 F)
201037.2 C (99.0 F)
201134.4 C (93.9 F)
201238.3 C (100.9 F)
201338.3 C (100.9 F)
201436.1 C (97.0 F)
201536.1 C (97.0 F)
201635.6 C (96.1 F)
201738.9 C (102.0 F)
201838.3 C (100.9 F)
201935.0 C (95.0 F)
202039.4 C (102.9 F)
202137.8 C (100.0 F)
202240.6 C (105.1 F)
202337.8 C (100.0 F)
202440.0 C (104.0 F)
202536.1 C (97.0 F)
202637.2 C (99.0 F)

Coldest night (TNn)

Coldest night (TNn) at Hernandez California by year The coldest night of the year at Hernandez California, 1990 to 2026. The record is -10.0 C (14.0 F) in 1990, marked on the chart; the median year is -3.9 C (25.0 F). -10-7.5-5-2.501990200020102020Record: -10.0 C (14.0 F) in 1990
The coldest night of the year at Hernandez California, 1990 to 2026. The record is -10.0 C (14.0 F) in 1990, marked on the chart; the median year is -3.9 C (25.0 F).
Coldest night (TNn) at Hernandez California by year
YearColdest night (TNn)
1990-10.0 C (14.0 F)
1991-8.3 C (17.1 F)
1992-4.4 C (24.1 F)
1993-5.0 C (23.0 F)
1994-3.9 C (25.0 F)
1995-2.2 C (28.0 F)
1996-3.9 C (25.0 F)
1997-5.0 C (23.0 F)
1998-7.8 C (18.0 F)
1999-4.4 C (24.1 F)
2000-1.7 C (28.9 F)
2001-3.9 C (25.0 F)
2002-5.6 C (21.9 F)
2003-2.8 C (27.0 F)
2004-3.9 C (25.0 F)
2005-0.6 C (30.9 F)
2006-3.9 C (25.0 F)
2007-7.2 C (19.0 F)
2008-3.3 C (26.1 F)
2009-6.7 C (19.9 F)
2010-4.4 C (24.1 F)
2011-5.6 C (21.9 F)
2012-4.4 C (24.1 F)
2013-5.6 C (21.9 F)
2014-3.9 C (25.0 F)
2015-2.2 C (28.0 F)
2016-2.8 C (27.0 F)
2017-3.3 C (26.1 F)
2018-4.4 C (24.1 F)
2019-4.4 C (24.1 F)
2020-2.8 C (27.0 F)
2021-2.8 C (27.0 F)
2022-4.4 C (24.1 F)
2023-4.4 C (24.1 F)
2024-2.2 C (28.0 F)
2025-1.1 C (30.0 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 Hernandez California falls on 17 April and the median first autumn frost on 1 December, which leaves a median of 228 days between them.

Fitted over all years, the growing season changes by +3.0 days per decade at this station.

Frost dates and growing season at Hernandez California
MeasureMedian, all yearsEarliest periodRecent period (1992 to 2022)Recent against earliestFitted trend
Last spring frost17 Apriln/a17 Apriln/a-4.3 days per decade
First autumn frost1 Decembern/a1 Decembern/a-1.2 days per decade
Growing days228 daysn/a228 daysn/a+3.0 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 Hernandez California standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Hernandez 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-14).