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Built 2026-10-15 (15 October 2026)

Fountain Springs California Weather Records (USR0000CFOU)

Record envelope, standing records and threshold days for Fountain Springs California (USR0000CFOU), California, United States, with 34 years of record.

Key Facts for Fountain Springs California

  • Fountain Springs California (USR0000CFOU) is a weather station in California, United States at 35.89 latitude and -118.92 longitude, 64 m (210 ft) above sea level.
  • The station reports from 1990 to 2023, 34 years of record.
  • 1,464 records set at Fountain Springs California still stand.
  • Records are tracked for tmax, tmin: an element needs 30 years of data to be eligible.
  • Fountain Springs California tied a daily record high minimum temperature of 17.8 C (64.0 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, 35.89 latitude, -118.92 longitude.
  • Elevation: 64 m (210 ft).
  • Period of record: 1990 to 2023, 34 years.
  • Eligible elements: tmax, tmin.

Daily Record Envelope and 2026

25 days at or beyond a record
Daily record high and record low at Fountain Springs California, with 2026 drawn through them The band shows the record high and record low for each calendar day at Fountain Springs California. The lines show the 2026 daily maximum and minimum. 25 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 Fountain Springs 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 Fountain Springs California, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan26.7 C (80.1 F)-8.3 C (17.1 F)21.7 C (71.1 F)-1.1 C (30.0 F)
Feb33.3 C (91.9 F)-4.4 C (24.1 F)26.7 C (80.1 F)-1.1 C (30.0 F)
Mar34.4 C (93.9 F)-2.2 C (28.0 F)34.4 C (93.9 F)3.3 C (37.9 F)
Apr37.2 C (99.0 F)-2.8 C (27.0 F)30.6 C (87.1 F)2.8 C (37.0 F)
May41.1 C (106.0 F)1.7 C (35.1 F)38.3 C (100.9 F)6.1 C (43.0 F)
Jun43.9 C (111.0 F)4.4 C (39.9 F)40.0 C (104.0 F)10.0 C (50.0 F)
Jul45.6 C (114.1 F)8.9 C (48.0 F)40.0 C (104.0 F)11.1 C (52.0 F)
Aug43.9 C (111.0 F)9.4 C (48.9 F)43.3 C (109.9 F)14.4 C (57.9 F)
Sep45.6 C (114.1 F)3.9 C (39.0 F)40.0 C (104.0 F)9.4 C (48.9 F)
Oct39.4 C (102.9 F)1.1 C (34.0 F)38.9 C (102.0 F)13.9 C (57.0 F)
Nov33.3 C (91.9 F)-3.9 C (25.0 F)n/an/a
Dec28.3 C (82.9 F)-9.4 C (15.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Fountain Springs California by the year they were set 1,464 records at Fountain Springs California still stand. 2007 holds the most, with 67. 0204060801990: 481991: 591992: 441993: 391994: 411995: 421996: 541997: 321998: 471999: 502000: 632001: 392002: 472003: 312004: 322005: 182006: 472007: 672008: 382009: 412010: 402011: 392012: 342013: 342014: 402015: 452016: 202017: 492018: 192019: 312020: 282021: 292022: 472023: 402024: 362025: 332026: 211990199419982002200620102014201820222026
1,464 records at Fountain Springs California still stand. 2007 holds the most, with 67.
Standing records at Fountain Springs California by the year they were set
Year setStanding records
199048
199159
199244
199339
199441
199542
199654
199732
199847
199950
200063
200139
200247
200331
200432
200518
200647
200767
200838
200941
201040
201139
201234
201334
201440
201545
201620
201749
201819
201931
202028
202129
202247
202340
202436
202533
202621

Period of Record Coverage

1990 to 2026
Days with data per year at Fountain Springs California 37 years of record at Fountain Springs California, 1990 to 2026. 5 years have data for under 90 percent of days and are left out of rankings: 1990, 1991, 2003, 2005, 2026. 1990: 237 of 365 days1991: 324 of 365 days1992: 366 of 366 days1993: 362 of 365 days1994: 365 of 365 days1995: 365 of 365 days1996: 362 of 366 days1997: 365 of 365 days1998: 364 of 365 days1999: 329 of 365 days2000: 365 of 366 days2001: 345 of 365 days2002: 365 of 365 days2003: 327 of 365 days2004: 365 of 366 days2005: 221 of 365 days2006: 365 of 365 days2007: 359 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 365 of 365 days2022: 365 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 365 of 365 days2026: 284 of 365 days19901995200020052010201520202025
37 years of record at Fountain Springs California, 1990 to 2026. 5 years have data for under 90 percent of days and are left out of rankings: 1990, 1991, 2003, 2005, 2026.
Days with data per year at Fountain Springs California
YearDays with dataShare of yearComplete
199023765%No
199132489%No
1992366100%Yes
199336299%Yes
1994365100%Yes
1995365100%Yes
199636299%Yes
1997365100%Yes
1998364100%Yes
199932990%Yes
2000365100%Yes
200134595%Yes
2002365100%Yes
200332790%No
2004365100%Yes
200522161%No
2006365100%Yes
200735998%Yes
2008366100%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017365100%Yes
2018365100%Yes
2019365100%Yes
2020366100%Yes
2021365100%Yes
2022365100%Yes
2023365100%Yes
2024366100%Yes
2025365100%Yes
202628478%No

Latest Records

20
Latest records at Fountain Springs California
DateStationRecordValueBeat old record byOld record stoodSignificance
9 October 2026Fountain Springs California, USdaily high min (Tie, Provisional)17.8 C (64.0 F)tie4 years1 of 100 (Routine)
8 October 2026Fountain Springs California, USdaily high min (Provisional)20.0 C (68.0 F)1.1 C (2.0 F)1 year6 of 100 (Routine)
8 October 2026Fountain Springs California, USdaily high max (Tie, Provisional)37.2 C (99.0 F)tie29 years2 of 100 (Routine)
7 October 2026Fountain Springs California, USdaily high min (Provisional)20.0 C (68.0 F)1.1 C (2.0 F)1 year6 of 100 (Routine)
7 October 2026Fountain Springs California, USdaily high max (Provisional)38.3 C (100.9 F)1.1 C (2.0 F)1 year5 of 100 (Routine)
4 October 2026Fountain Springs California, USdaily high max (Provisional)38.9 C (102.0 F)0.6 C (1.1 F)1 year4 of 100 (Routine)
2 October 2026Fountain Springs California, USdaily high max (Tie, Provisional)38.3 C (100.9 F)tie1 year0 of 100 (Routine)
10 September 2026Fountain Springs California, USdaily high max (Provisional)40.0 C (104.0 F)0.6 C (1.1 F)11 years7 of 100 (Routine)
1 September 2026Fountain Springs California, USdaily low min (Tie, Provisional)11.1 C (52.0 F)tie27 years2 of 100 (Routine)
24 August 2026Fountain Springs California, USdaily high max (Provisional)41.1 C (106.0 F)0.5 C (0.9 F)4 years5 of 100 (Routine)
21 August 2026Fountain Springs California, USdaily high min (Tie, Provisional)21.7 C (71.1 F)tie23 years2 of 100 (Routine)
10 August 2026Fountain Springs California, USdaily high max (Tie)42.2 C (108.0 F)tie29 years2 of 100 (Routine)
9 August 2026Fountain Springs California, USdaily high max43.3 C (109.9 F)1.6 C (2.9 F)29 years16 of 100 (Routine)
3 August 2026Fountain Springs California, USdaily high max41.7 C (107.1 F)0.6 C (1.1 F)31 years13 of 100 (Routine)
2 August 2026Fountain Springs California, USdaily high max (Tie)41.1 C (106.0 F)tie32 years3 of 100 (Routine)
28 June 2026Fountain Springs California, USdaily low max (Tie)28.9 C (84.0 F)tie35 years3 of 100 (Routine)
16 June 2026Fountain Springs California, USdaily high max (Tie)38.9 C (102.0 F)tie25 years2 of 100 (Routine)
13 June 2026Fountain Springs California, USdaily high max40.0 C (104.0 F)0.6 C (1.1 F)11 years7 of 100 (Routine)
28 May 2026Fountain Springs California, USdaily low max18.3 C (64.9 F)0.6 C (1.1 F)36 years14 of 100 (Routine)
12 May 2026Fountain Springs California, USdaily high max38.3 C (100.9 F)1.1 C (2.0 F)29 years13 of 100 (Routine)

Climate Trend

30 complete years, 1992 to 2025
Annual mean temperature at Fountain Springs California as warming stripes, 1992 to 2025 One stripe for each of 30 complete years at Fountain Springs California, 1992 to 2025. Blue stripes are years cooler than the station's own mean of 17.6 C (63.7 F); red stripes are warmer. The coolest year was 2011, at 16.3 C (61.3 F), and the warmest was 2014, at 19.4 C (66.9 F). The strongest colour marks a difference of 1.9 C (3.4 F). 1992: 17.8 C, +0.2 C from the station mean1993: 16.9 C, -0.7 C from the station mean1994: 16.9 C, -0.7 C from the station mean1995: 17.6 C, 0.0 C from the station mean1996: 17.6 C, +0.1 C from the station mean1997: 17.4 C, -0.2 C from the station mean1998: 16.3 C, -1.3 C from the station mean2000: 17.2 C, -0.4 C from the station mean2002: 17.5 C, 0.0 C from the station mean2004: 17.4 C, -0.1 C from the station mean2006: 17.2 C, -0.4 C from the station mean2007: 17.8 C, +0.2 C from the station mean2008: 17.2 C, -0.4 C from the station mean2009: 17.5 C, -0.1 C from the station mean2010: 16.5 C, -1.1 C from the station mean2011: 16.3 C, -1.3 C from the station mean2012: 17.6 C, 0.0 C from the station mean2013: 17.7 C, +0.1 C from the station mean2014: 19.4 C, +1.8 C from the station mean2015: 18.5 C, +0.9 C from the station mean2016: 17.8 C, +0.2 C from the station mean2017: 18.3 C, +0.7 C from the station mean2018: 18.2 C, +0.6 C from the station mean2019: 17.4 C, -0.2 C from the station mean2020: 18.0 C, +0.4 C from the station mean2021: 18.6 C, +1.0 C from the station mean2022: 18.5 C, +0.9 C from the station mean2023: 17.1 C, -0.5 C from the station mean2024: 18.2 C, +0.6 C from the station mean2025: 17.6 C, 0.0 C from the station mean19921995200020052010201520202025
One stripe for each of 30 complete years at Fountain Springs California, 1992 to 2025. Blue stripes are years cooler than the station's own mean of 17.6 C (63.7 F); red stripes are warmer. The coolest year was 2011, at 16.3 C (61.3 F), and the warmest was 2014, at 19.4 C (66.9 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Fountain Springs California as warming stripes, 1992 to 2025
YearAnnual mean temperatureDifference from the station mean
199217.8 C+0.17 C
199316.9 C-0.68 C
199416.9 C-0.72 C
199517.6 C-0.01 C
199617.6 C+0.05 C
199717.4 C-0.24 C
199816.3 C-1.28 C
200017.2 C-0.40 C
200217.5 C-0.05 C
200417.4 C-0.15 C
200617.2 C-0.42 C
200717.8 C+0.16 C
200817.2 C-0.39 C
200917.5 C-0.14 C
201016.5 C-1.09 C
201116.3 C-1.31 C
201217.6 C+0.00 C
201317.7 C+0.07 C
201419.4 C+1.80 C
201518.5 C+0.89 C
201617.8 C+0.16 C
201718.3 C+0.66 C
201818.2 C+0.58 C
201917.4 C-0.18 C
202018.0 C+0.41 C
202118.6 C+1.04 C
202218.5 C+0.88 C
202317.1 C-0.48 C
202418.2 C+0.64 C
202517.6 C+0.01 C

The annual mean temperature here has risen by 0.3 C (0.1 to 0.5) per decade over 1992 to 2025. In Fahrenheit: 0.5 F (0.1 to 1.0) 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 Fountain Springs California
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.3 C (0.1 to 0.5) per decade0.5 F (0.1 to 1.0) per decade1992 to 202530Rise
Mean daily maximum0.24 C (-0.02 to 0.50) per decade0.43 F (-0.03 to 0.90) per decade1992 to 202530Not clearly different from zero
Mean daily minimum0.4 C (0.1 to 0.6) per decade0.7 F (0.2 to 1.1) per decade1992 to 202530Rise

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 Fountain Springs California: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)45.6 C (114.1 F)200742.8 C (109.0 F)37
Coldest night (TNn)-9.4 C (15.1 F)1990-3.3 C (26.1 F)37

Hottest day (TXx)

Hottest day (TXx) at Fountain Springs California by year The hottest day of the year at Fountain Springs California, 1990 to 2026. The record is 45.6 C (114.1 F) in 2007, marked on the chart; the median year is 42.8 C (109.0 F). 404244461990200020102020Record: 45.6 C (114.1 F) in 2007
The hottest day of the year at Fountain Springs California, 1990 to 2026. The record is 45.6 C (114.1 F) in 2007, marked on the chart; the median year is 42.8 C (109.0 F).
Hottest day (TXx) at Fountain Springs California by year
YearHottest day (TXx)
199042.2 C (108.0 F)
199142.8 C (109.0 F)
199242.2 C (108.0 F)
199342.2 C (108.0 F)
199442.8 C (109.0 F)
199542.8 C (109.0 F)
199643.9 C (111.0 F)
199743.3 C (109.9 F)
199843.3 C (109.9 F)
199941.1 C (106.0 F)
200041.1 C (106.0 F)
200142.8 C (109.0 F)
200243.3 C (109.9 F)
200341.7 C (107.1 F)
200442.2 C (108.0 F)
200540.0 C (104.0 F)
200645.0 C (113.0 F)
200745.6 C (114.1 F)
200842.2 C (108.0 F)
200943.3 C (109.9 F)
201043.3 C (109.9 F)
201140.6 C (105.1 F)
201242.8 C (109.0 F)
201342.2 C (108.0 F)
201442.8 C (109.0 F)
201541.7 C (107.1 F)
201641.7 C (107.1 F)
201742.8 C (109.0 F)
201841.1 C (106.0 F)
201941.7 C (107.1 F)
202041.7 C (107.1 F)
202143.9 C (111.0 F)
202245.6 C (114.1 F)
202343.3 C (109.9 F)
202445.0 C (113.0 F)
202541.1 C (106.0 F)
202643.3 C (109.9 F)

Coldest night (TNn)

Coldest night (TNn) at Fountain Springs California by year The coldest night of the year at Fountain Springs California, 1990 to 2026. The record is -9.4 C (15.1 F) in 1990, marked on the chart; the median year is -3.3 C (26.1 F). -10-7.5-5-2.501990200020102020Record: -9.4 C (15.1 F) in 1990
The coldest night of the year at Fountain Springs California, 1990 to 2026. The record is -9.4 C (15.1 F) in 1990, marked on the chart; the median year is -3.3 C (26.1 F).
Coldest night (TNn) at Fountain Springs California by year
YearColdest night (TNn)
1990-9.4 C (15.1 F)
1991-3.9 C (25.0 F)
1992-4.4 C (24.1 F)
1993-6.1 C (21.0 F)
1994-3.3 C (26.1 F)
1995-1.1 C (30.0 F)
1996-2.8 C (27.0 F)
1997-5.0 C (23.0 F)
1998-8.9 C (16.0 F)
1999-5.6 C (21.9 F)
2000-2.8 C (27.0 F)
2001-2.8 C (27.0 F)
2002-3.9 C (25.0 F)
2003-3.3 C (26.1 F)
2004-4.4 C (24.1 F)
2005-2.8 C (27.0 F)
2006-3.9 C (25.0 F)
2007-8.3 C (17.1 F)
2008-3.3 C (26.1 F)
2009-3.3 C (26.1 F)
2010-2.2 C (28.0 F)
2011-3.3 C (26.1 F)
2012-4.4 C (24.1 F)
2013-6.1 C (21.0 F)
2014-1.7 C (28.9 F)
2015-3.3 C (26.1 F)
2016-2.8 C (27.0 F)
2017-2.8 C (27.0 F)
2018-4.4 C (24.1 F)
2019-2.8 C (27.0 F)
2020-3.9 C (25.0 F)
20210.0 C (32.0 F)
2022-1.7 C (28.9 F)
2023-2.8 C (27.0 F)
2024-1.7 C (28.9 F)
2025-2.2 C (28.0 F)
2026-1.1 C (30.0 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

28 years with a frost

Across 28 years with a frost, the median last spring frost at Fountain Springs California falls on 6 March and the median first autumn frost on 1 December, which leaves a median of 274 days between them.

Fitted over all years, the growing season changes by +3.8 days per decade at this station.

Frost dates and growing season at Fountain Springs California
MeasureMedian, all yearsEarliest periodRecent period (1992 to 2025)Recent against earliestFitted trend
Last spring frost6 Marchn/a6 Marchn/a-1.6 days per decade
First autumn frost1 Decembern/a1 Decembern/a+2.3 days per decade
Growing days274 daysn/a274 daysn/a+3.8 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 Fountain Springs California standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Fountain Springs 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

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