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Built 2026-10-18 (18 October 2026)

Chilao California Weather Records (USR0000CCHI)

Record envelope, standing records and threshold days for Chilao California (USR0000CCHI), California, United States, with 38 years of record.

Key Facts for Chilao California

  • Chilao California (USR0000CCHI) is a weather station in California, United States at 34.33 latitude and -118.03 longitude, 1,661 m (5,450 ft) above sea level.
  • The station reports from 1986 to 2023, 38 years of record.
  • 1,464 records set at Chilao California still stand.
  • Records are tracked for tmax, tmin: an element needs 30 years of data to be eligible.
  • Chilao California tied a daily record high maximum temperature of 30.6 C (87.1 F) on 7 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, 34.33 latitude, -118.03 longitude.
  • Elevation: 1,661 m (5,450 ft).
  • Period of record: 1986 to 2023, 38 years.
  • Eligible elements: tmax, tmin.

Daily Record Envelope and 2026

25 days at or beyond a record
Daily record high and record low at Chilao California, with 2026 drawn through them The band shows the record high and record low for each calendar day at Chilao California. The lines show the 2026 daily maximum and minimum. 25 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Chilao California. The lines show the 2026 daily maximum and minimum. 25 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Chilao California, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan25.0 C (77.0 F)-8.9 C (16.0 F)22.2 C (72.0 F)-1.1 C (30.0 F)
Feb24.4 C (75.9 F)-10.4 C (13.3 F)24.4 C (75.9 F)-5.0 C (23.0 F)
Mar30.0 C (86.0 F)-8.4 C (16.9 F)30.0 C (86.0 F)2.8 C (37.0 F)
Apr28.9 C (84.0 F)-6.1 C (21.0 F)23.3 C (73.9 F)1.1 C (34.0 F)
May33.3 C (91.9 F)-2.6 C (27.3 F)28.9 C (84.0 F)1.1 C (34.0 F)
Jun37.8 C (100.0 F)-0.2 C (31.6 F)30.0 C (86.0 F)9.4 C (48.9 F)
Jul38.9 C (102.0 F)6.1 C (43.0 F)33.9 C (93.0 F)13.3 C (55.9 F)
Aug36.7 C (98.1 F)3.3 C (37.9 F)34.4 C (93.9 F)14.4 C (57.9 F)
Sep36.7 C (98.1 F)1.4 C (34.5 F)32.2 C (90.0 F)8.3 C (46.9 F)
Oct33.9 C (93.0 F)-1.7 C (28.9 F)30.6 C (87.1 F)9.4 C (48.9 F)
Nov29.4 C (84.9 F)-6.4 C (20.5 F)n/an/a
Dec25.6 C (78.1 F)-11.9 C (10.6 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Chilao California by the year they were set 1,464 records at Chilao California still stand. 2020 holds the most, with 58. 02040601986: 411987: 531988: 11989: 301990: 361991: 471992: 271993: 331994: 371995: 351996: 331997: 191998: 381999: 442000: 432001: 352002: 512003: 362004: 282005: 192006: 402007: 502008: 312009: 262010: 362011: 502012: 402013: 282014: 362015: 402016: 312017: 432018: 302019: 242020: 582021: 462022: 262023: 272024: 412025: 342026: 41198619911996200120062011201620212026
1,464 records at Chilao California still stand. 2020 holds the most, with 58.
Standing records at Chilao California by the year they were set
Year setStanding records
198641
198753
19881
198930
199036
199147
199227
199333
199437
199535
199633
199719
199838
199944
200043
200135
200251
200336
200428
200519
200640
200750
200831
200926
201036
201150
201240
201328
201436
201540
201631
201743
201830
201924
202058
202146
202226
202327
202441
202534
202641

All-Time Record Progression

2 new records
When Chilao California set new all-time records 2 all-time records were set at Chilao California between 6 September 2020 and 18 July 2023. Each dot is a new record. Record high minimum temperature6 September 2020: Record high minimum temperature 28.3 C (82.9 F)18 July 2023: Record high minimum temperature 30.0 C (86.0 F)2020
2 all-time records were set at Chilao California between 6 September 2020 and 18 July 2023. Each dot is a new record.
When Chilao California set new all-time records
DateKindDetail
2020-09-06Record high minimum temperatureRecord high minimum temperature 28.3 C (82.9 F)
2023-07-18Record high minimum temperatureRecord high minimum temperature 30.0 C (86.0 F)

Period of Record Coverage

1986 to 2026
Days with data per year at Chilao California 41 years of record at Chilao California, 1986 to 2026. 7 years have data for under 90 percent of days and are left out of rankings: 1986, 1987, 1988, 1989, 1990, 2023, 2026. 1986: 298 of 365 days1987: 198 of 365 days1988: 4 of 366 days1989: 248 of 365 days1990: 296 of 365 days1991: 364 of 365 days1992: 352 of 366 days1993: 353 of 365 days1994: 362 of 365 days1995: 350 of 365 days1996: 363 of 366 days1997: 356 of 365 days1998: 364 of 365 days1999: 365 of 365 days2000: 366 of 366 days2001: 357 of 365 days2002: 360 of 365 days2003: 365 of 365 days2004: 364 of 366 days2005: 365 of 365 days2006: 364 of 365 days2007: 363 of 365 days2008: 366 of 366 days2009: 340 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 362 of 365 days2014: 365 of 365 days2015: 361 of 365 days2016: 362 of 366 days2017: 364 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 365 of 365 days2022: 341 of 365 days2023: 311 of 365 days2024: 366 of 366 days2025: 365 of 365 days2026: 284 of 365 days1990200020102020
41 years of record at Chilao California, 1986 to 2026. 7 years have data for under 90 percent of days and are left out of rankings: 1986, 1987, 1988, 1989, 1990, 2023, 2026.
Days with data per year at Chilao California
YearDays with dataShare of yearComplete
198629882%No
198719854%No
198841%No
198924868%No
199029681%No
1991364100%Yes
199235296%Yes
199335397%Yes
199436299%Yes
199535096%Yes
199636399%Yes
199735698%Yes
1998364100%Yes
1999365100%Yes
2000366100%Yes
200135798%Yes
200236099%Yes
2003365100%Yes
200436499%Yes
2005365100%Yes
2006364100%Yes
200736399%Yes
2008366100%Yes
200934093%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
201336299%Yes
2014365100%Yes
201536199%Yes
201636299%Yes
2017364100%Yes
2018365100%Yes
2019365100%Yes
2020366100%Yes
2021365100%Yes
202234193%Yes
202331185%No
2024366100%Yes
2025365100%Yes
202628478%No

Latest Records

20
Latest records at Chilao California
DateStationRecordValueBeat old record byOld record stoodSignificance
7 October 2026Chilao California, USdaily high max (Tie, Provisional)30.6 C (87.1 F)tie1 year1 of 100 (Routine)
10 September 2026Chilao California, USdaily high min (Tie, Provisional)23.3 C (73.9 F)tie32 years3 of 100 (Routine)
6 September 2026Chilao California, USdaily low max (Provisional)18.3 C (64.9 F)3.9 C (7.0 F)29 years20 of 100 (Routine)
27 August 2026Chilao California, USdaily high min (Tie, Provisional)23.9 C (75.0 F)tie8 years1 of 100 (Routine)
26 August 2026Chilao California, USdaily high max (Tie, Provisional)33.9 C (93.0 F)tie15 years2 of 100 (Routine)
26 August 2026Chilao California, USdaily high min (Tie, Provisional)23.9 C (75.0 F)tie15 years2 of 100 (Routine)
25 August 2026Chilao California, USdaily high max (Tie, Provisional)33.9 C (93.0 F)tie16 years2 of 100 (Routine)
25 August 2026Chilao California, USdaily high min (Tie, Provisional)24.4 C (75.9 F)tie16 years2 of 100 (Routine)
21 August 2026Chilao California, USdaily high min (Tie, Provisional)22.8 C (73.0 F)tie0 years1 of 100 (Routine)
2 August 2026Chilao California, USdaily high max33.9 C (93.0 F)0.3 C (0.5 F)32 years13 of 100 (Routine)
2 August 2026Chilao California, USdaily high min23.3 C (73.9 F)0.5 C (0.9 F)13 years9 of 100 (Routine)
31 July 2026Chilao California, USdaily high max33.9 C (93.0 F)0.6 C (1.1 F)12 years8 of 100 (Routine)
12 June 2026Chilao California, USdaily high min19.4 C (66.9 F)0.5 C (0.9 F)11 years8 of 100 (Routine)
12 June 2026Chilao California, USdaily high max30.0 C (86.0 F)0.6 C (1.1 F)8 years7 of 100 (Routine)
28 May 2026Chilao California, USdaily low min1.1 C (34.0 F)1.1 C (2.0 F)16 years10 of 100 (Routine)
27 May 2026Chilao California, USdaily low max7.8 C (46.0 F)1.1 C (2.0 F)16 years9 of 100 (Routine)
11 May 2026Chilao California, USdaily high min18.9 C (66.0 F)0.3 C (0.5 F)28 years12 of 100 (Routine)
10 May 2026Chilao California, USdaily high max28.9 C (84.0 F)1.7 C (3.1 F)20 years12 of 100 (Routine)
10 May 2026Chilao California, USdaily high min18.9 C (66.0 F)0.3 C (0.5 F)28 years12 of 100 (Routine)
29 March 2026Chilao California, USdaily high min13.3 C (55.9 F)0.5 C (0.9 F)21 years11 of 100 (Routine)

Climate Trend

31 complete years, 1991 to 2025
Annual mean temperature at Chilao California as warming stripes, 1991 to 2025 One stripe for each of 31 complete years at Chilao California, 1991 to 2025. Blue stripes are years cooler than the station's own mean of 14.6 C (58.2 F); red stripes are warmer. The coolest year was 1998, at 12.4 C (54.3 F), and the warmest was 2014, at 16.1 C (60.9 F). The strongest colour marks a difference of 2.2 C (4.0 F). 1991: 12.8 C, -1.7 C from the station mean1993: 12.7 C, -1.8 C from the station mean1994: 13.0 C, -1.5 C from the station mean1995: 13.9 C, -0.6 C from the station mean1996: 14.5 C, 0.0 C from the station mean1997: 14.3 C, -0.3 C from the station mean1998: 12.4 C, -2.2 C from the station mean1999: 14.4 C, -0.2 C from the station mean2000: 14.7 C, +0.1 C from the station mean2001: 14.5 C, -0.1 C from the station mean2002: 14.6 C, 0.0 C from the station mean2003: 14.9 C, +0.3 C from the station mean2004: 14.0 C, -0.6 C from the station mean2005: 13.9 C, -0.7 C from the station mean2006: 14.4 C, -0.1 C from the station mean2007: 15.0 C, +0.4 C from the station mean2008: 15.1 C, +0.6 C from the station mean2010: 13.9 C, -0.7 C from the station mean2011: 14.0 C, -0.5 C from the station mean2012: 15.3 C, +0.7 C from the station mean2013: 15.1 C, +0.5 C from the station mean2014: 16.1 C, +1.5 C from the station mean2015: 15.0 C, +0.4 C from the station mean2016: 15.3 C, +0.7 C from the station mean2017: 15.7 C, +1.2 C from the station mean2018: 15.6 C, +1.0 C from the station mean2019: 13.8 C, -0.8 C from the station mean2020: 15.8 C, +1.3 C from the station mean2021: 15.9 C, +1.3 C from the station mean2024: 15.5 C, +0.9 C from the station mean2025: 15.5 C, +1.0 C from the station mean19911995200020052010201520202025
One stripe for each of 31 complete years at Chilao California, 1991 to 2025. Blue stripes are years cooler than the station's own mean of 14.6 C (58.2 F); red stripes are warmer. The coolest year was 1998, at 12.4 C (54.3 F), and the warmest was 2014, at 16.1 C (60.9 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Chilao California as warming stripes, 1991 to 2025
YearAnnual mean temperatureDifference from the station mean
199112.8 C-1.75 C
199312.7 C-1.83 C
199413.0 C-1.54 C
199513.9 C-0.64 C
199614.5 C-0.04 C
199714.3 C-0.28 C
199812.4 C-2.17 C
199914.4 C-0.20 C
200014.7 C+0.10 C
200114.5 C-0.08 C
200214.6 C+0.02 C
200314.9 C+0.34 C
200414.0 C-0.56 C
200513.9 C-0.68 C
200614.4 C-0.12 C
200715.0 C+0.43 C
200815.1 C+0.55 C
201013.9 C-0.69 C
201114.0 C-0.54 C
201215.3 C+0.74 C
201315.1 C+0.50 C
201416.1 C+1.49 C
201515.0 C+0.43 C
201615.3 C+0.73 C
201715.7 C+1.15 C
201815.6 C+1.00 C
201913.8 C-0.81 C
202015.8 C+1.26 C
202115.9 C+1.30 C
202415.5 C+0.91 C
202515.5 C+0.95 C

The annual mean temperature here has risen by 0.7 C (0.5 to 1.0) per decade over 1991 to 2025. In Fahrenheit: 1.3 F (0.9 to 1.8) per decade. The slope is a straight line fitted to 31 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Chilao California
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.7 C (0.5 to 1.0) per decade1.3 F (0.9 to 1.8) per decade1991 to 202531Rise
Mean daily maximum0.7 C (0.4 to 1.0) per decade1.3 F (0.8 to 1.8) per decade1991 to 202531Rise
Mean daily minimum0.7 C (0.5 to 1.0) per decade1.3 F (0.9 to 1.8) per decade1991 to 202531Rise

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

1986 to 2026
Yearly extremes at Chilao California: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)38.9 C (102.0 F)200535.1 C (95.2 F)41
Coldest night (TNn)-11.9 C (10.6 F)1990-6.1 C (21.0 F)41

Hottest day (TXx)

Hottest day (TXx) at Chilao California by year The hottest day of the year at Chilao California, 1986 to 2026. The record is 38.9 C (102.0 F) in 2005, marked on the chart; the median year is 35.1 C (95.2 F). 102030401990200020102020Record: 38.9 C (102.0 F) in 2005
The hottest day of the year at Chilao California, 1986 to 2026. The record is 38.9 C (102.0 F) in 2005, marked on the chart; the median year is 35.1 C (95.2 F).
Hottest day (TXx) at Chilao California by year
YearHottest day (TXx)
198632.7 C (90.9 F)
198732.7 C (90.9 F)
198815.1 C (59.2 F)
198935.1 C (95.2 F)
199031.9 C (89.4 F)
199135.1 C (95.2 F)
199232.3 C (90.1 F)
199335.1 C (95.2 F)
199435.1 C (95.2 F)
199536.3 C (97.3 F)
199635.5 C (95.9 F)
199735.6 C (96.1 F)
199836.1 C (97.0 F)
199933.3 C (91.9 F)
200033.9 C (93.0 F)
200135.0 C (95.0 F)
200236.1 C (97.0 F)
200337.2 C (99.0 F)
200433.3 C (91.9 F)
200538.9 C (102.0 F)
200636.1 C (97.0 F)
200737.8 C (100.0 F)
200837.2 C (99.0 F)
200936.1 C (97.0 F)
201033.9 C (93.0 F)
201133.9 C (93.0 F)
201236.7 C (98.1 F)
201337.8 C (100.0 F)
201435.0 C (95.0 F)
201533.9 C (93.0 F)
201636.1 C (97.0 F)
201736.1 C (97.0 F)
201836.7 C (98.1 F)
201934.4 C (93.9 F)
202036.7 C (98.1 F)
202137.8 C (100.0 F)
202236.1 C (97.0 F)
202331.7 C (89.1 F)
202437.8 C (100.0 F)
202533.9 C (93.0 F)
202634.4 C (93.9 F)

Coldest night (TNn)

Coldest night (TNn) at Chilao California by year The coldest night of the year at Chilao California, 1986 to 2026. The record is -11.9 C (10.6 F) in 1990, marked on the chart; the median year is -6.1 C (21.0 F). -15-10-5051990200020102020Record: -11.9 C (10.6 F) in 1990
The coldest night of the year at Chilao California, 1986 to 2026. The record is -11.9 C (10.6 F) in 1990, marked on the chart; the median year is -6.1 C (21.0 F).
Coldest night (TNn) at Chilao California by year
YearColdest night (TNn)
1986-4.1 C (24.6 F)
1987-10.4 C (13.3 F)
19882.9 C (37.2 F)
1989-3.3 C (26.1 F)
1990-11.9 C (10.6 F)
1991-6.4 C (20.5 F)
1992-6.1 C (21.0 F)
1993-6.1 C (21.0 F)
1994-6.4 C (20.5 F)
1995-6.9 C (19.6 F)
1996-7.7 C (18.1 F)
1997-4.1 C (24.6 F)
1998-7.8 C (18.0 F)
1999-6.1 C (21.0 F)
2000-4.4 C (24.1 F)
2001-5.6 C (21.9 F)
2002-6.7 C (19.9 F)
2003-5.0 C (23.0 F)
2004-3.9 C (25.0 F)
2005-3.9 C (25.0 F)
2006-6.1 C (21.0 F)
2007-8.9 C (16.0 F)
2008-5.0 C (23.0 F)
2009-6.1 C (21.0 F)
2010-6.1 C (21.0 F)
2011-7.8 C (18.0 F)
2012-5.6 C (21.9 F)
2013-7.2 C (19.0 F)
2014-7.2 C (19.0 F)
2015-5.6 C (21.9 F)
2016-6.1 C (21.0 F)
2017-5.0 C (23.0 F)
2018-6.1 C (21.0 F)
2019-7.2 C (19.0 F)
2020-5.0 C (23.0 F)
2021-6.1 C (21.0 F)
2022-5.6 C (21.9 F)
2023-7.8 C (18.0 F)
2024-5.0 C (23.0 F)
2025-3.9 C (25.0 F)
2026-5.0 C (23.0 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

31 years with a frost

Across 31 years with a frost, the median last spring frost at Chilao California falls on 27 April and the median first autumn frost on 15 November, which leaves a median of 200 days between them.

Fitted over all years, the growing season changes by +7.0 days per decade at this station.

Frost dates and growing season at Chilao California
MeasureMedian, all yearsEarliest periodRecent period (1993 to 2025)Recent against earliestFitted trend
Last spring frost27 Apriln/a27 Apriln/a-5.3 days per decade
First autumn frost15 Novembern/a17 Novembern/a+1.7 days per decade
Growing days200 daysn/a203 daysn/a+7.0 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 Chilao California standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Chilao 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).