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Built 2026-10-15 (15 October 2026)

Santa Rosa California Weather Records (USR0000CSRS)

Record envelope, standing records and threshold days for Santa Rosa California (USR0000CSRS), California, United States, with 33 years of record.

Key Facts for Santa Rosa California

  • Santa Rosa California (USR0000CSRS) is a weather station in California, United States at 38.48 latitude and -122.71 longitude, 176 m (576 ft) above sea level.
  • The station reports from 1991 to 2023, 33 years of record.
  • 1,464 records set at Santa Rosa California still stand.
  • Records are tracked for tmax, tmin: an element needs 30 years of data to be eligible.
  • Santa Rosa California set a daily record high minimum temperature of 21.1 C (70.0 F) on 4 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, 38.48 latitude, -122.71 longitude.
  • Elevation: 176 m (576 ft).
  • Period of record: 1991 to 2023, 33 years.
  • Eligible elements: tmax, tmin.

Daily Record Envelope and 2026

15 days at or beyond a record
Daily record high and record low at Santa Rosa California, with 2026 drawn through them The band shows the record high and record low for each calendar day at Santa Rosa California. The lines show the 2026 daily maximum and minimum. 15 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -1001020304050 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Santa Rosa California. The lines show the 2026 daily maximum and minimum. 15 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Santa Rosa California, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan27.2 C (81.0 F)-2.2 C (28.0 F)21.1 C (70.0 F)3.3 C (37.9 F)
Feb27.8 C (82.0 F)-1.7 C (28.9 F)25.0 C (77.0 F)1.1 C (34.0 F)
Mar32.8 C (91.0 F)-1.7 C (28.9 F)32.8 C (91.0 F)7.2 C (45.0 F)
Apr34.4 C (93.9 F)0.6 C (33.1 F)27.8 C (82.0 F)7.2 C (45.0 F)
May37.8 C (100.0 F)3.9 C (39.0 F)31.1 C (88.0 F)8.3 C (46.9 F)
Jun42.8 C (109.0 F)6.7 C (44.1 F)37.2 C (99.0 F)10.0 C (50.0 F)
Jul43.9 C (111.0 F)7.8 C (46.0 F)35.0 C (95.0 F)9.4 C (48.9 F)
Aug41.1 C (106.0 F)8.3 C (46.9 F)34.4 C (93.9 F)10.0 C (50.0 F)
Sep43.3 C (109.9 F)7.2 C (45.0 F)35.6 C (96.1 F)8.9 C (48.0 F)
Oct40.0 C (104.0 F)4.4 C (39.9 F)37.8 C (100.0 F)10.0 C (50.0 F)
Nov32.8 C (91.0 F)0.6 C (33.1 F)n/an/a
Dec26.7 C (80.1 F)-4.4 C (24.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Santa Rosa California by the year they were set 1,464 records at Santa Rosa California still stand. 1995 holds the most, with 66. 0204060801991: 631992: 361993: 391994: 491995: 661996: 611997: 301998: 511999: 652000: 462001: 372002: 632003: 482004: 392005: 332006: 372007: 422008: 522009: 382010: 432011: 412012: 322013: 342014: 312015: 352016: 262017: 312018: 402019: 522020: 452021: 222022: 302023: 262024: 252025: 302026: 26199119951999200320072011201520192023
1,464 records at Santa Rosa California still stand. 1995 holds the most, with 66.
Standing records at Santa Rosa California by the year they were set
Year setStanding records
199163
199236
199339
199449
199566
199661
199730
199851
199965
200046
200137
200263
200348
200439
200533
200637
200742
200852
200938
201043
201141
201232
201334
201431
201535
201626
201731
201840
201952
202045
202122
202230
202326
202425
202530
202626

Period of Record Coverage

1991 to 2026
Days with data per year at Santa Rosa California 36 years of record at Santa Rosa California, 1991 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1991, 2026. 1991: 297 of 365 days1992: 352 of 366 days1993: 362 of 365 days1994: 365 of 365 days1995: 355 of 365 days1996: 363 of 366 days1997: 364 of 365 days1998: 352 of 365 days1999: 361 of 365 days2000: 366 of 366 days2001: 365 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 365 of 365 days2008: 365 of 366 days2009: 355 of 365 days2010: 352 of 365 days2011: 359 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 364 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 363 of 365 days2020: 366 of 366 days2021: 364 of 365 days2022: 365 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 365 of 365 days2026: 284 of 365 days1995200020052010201520202025
36 years of record at Santa Rosa California, 1991 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1991, 2026.
Days with data per year at Santa Rosa California
YearDays with dataShare of yearComplete
199129781%No
199235296%Yes
199336299%Yes
1994365100%Yes
199535597%Yes
199636399%Yes
1997364100%Yes
199835296%Yes
199936199%Yes
2000366100%Yes
2001365100%Yes
2002365100%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
2007365100%Yes
2008365100%Yes
200935597%Yes
201035296%Yes
201135998%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
2015365100%Yes
201636499%Yes
2017365100%Yes
2018365100%Yes
201936399%Yes
2020366100%Yes
2021364100%Yes
2022365100%Yes
2023365100%Yes
2024366100%Yes
2025365100%Yes
202628478%No

Latest Records

20
Latest records at Santa Rosa California
DateStationRecordValueBeat old record byOld record stoodSignificance
4 October 2026Santa Rosa California, USdaily high min (Provisional)21.1 C (70.0 F)0.5 C (0.9 F)3 years4 of 100 (Routine)
3 September 2026Santa Rosa California, USdaily low max (Provisional)18.9 C (66.0 F)0.5 C (0.9 F)29 years11 of 100 (Routine)
21 July 2026Santa Rosa California, USdaily high min (Tie)16.1 C (61.0 F)tie20 years2 of 100 (Routine)
19 June 2026Santa Rosa California, USdaily low max19.4 C (66.9 F)1.7 C (3.1 F)19 years11 of 100 (Routine)
19 May 2026Santa Rosa California, USdaily high min16.7 C (62.1 F)2.3 C (4.1 F)32 years22 of 100 (Routine)
18 May 2026Santa Rosa California, USdaily high min17.8 C (64.0 F)0.6 C (1.1 F)28 years13 of 100 (Routine)
5 April 2026Santa Rosa California, USdaily high max27.8 C (82.0 F)0.6 C (1.1 F)9 years6 of 100 (Routine)
4 April 2026Santa Rosa California, USdaily high max27.8 C (82.0 F)2.2 C (4.0 F)15 years11 of 100 (Routine)
4 April 2026Santa Rosa California, USdaily high min12.2 C (54.0 F)0.5 C (0.9 F)9 years6 of 100 (Routine)
29 March 2026Santa Rosa California, USdaily high min15.6 C (60.1 F)0.6 C (1.1 F)8 years7 of 100 (Routine)
29 March 2026Santa Rosa California, USdaily high max29.4 C (84.9 F)0.5 C (0.9 F)8 years6 of 100 (Routine)
28 March 2026Santa Rosa California, USdaily high max (Tie)26.7 C (80.1 F)tie11 years1 of 100 (Routine)
27 March 2026Santa Rosa California, USdaily high min12.2 C (54.0 F)1.1 C (2.0 F)16 years12 of 100 (Routine)
27 March 2026Santa Rosa California, USdaily high max28.3 C (82.9 F)1.1 C (2.0 F)16 years10 of 100 (Routine)
24 March 2026Santa Rosa California, USdaily high min13.3 C (55.9 F)1.6 C (2.9 F)28 years16 of 100 (Routine)
24 March 2026Santa Rosa California, USdaily high max (Tie)26.7 C (80.1 F)tie0 years0 of 100 (Routine)
23 March 2026Santa Rosa California, USdaily high max25.6 C (78.1 F)1.2 C (2.2 F)19 years10 of 100 (Routine)
21 March 2026Santa Rosa California, USdaily high max29.4 C (84.9 F)4.4 C (7.9 F)25 years19 of 100 (Routine)
20 March 2026Santa Rosa California, USdaily high min17.2 C (63.0 F)5.0 C (9.0 F)24 years28 of 100 (Routine)
20 March 2026Santa Rosa California, USdaily high max32.2 C (90.0 F)3.3 C (5.9 F)21 years16 of 100 (Routine)

Climate Trend

33 complete years, 1992 to 2025
Annual mean temperature at Santa Rosa California as warming stripes, 1992 to 2025 One stripe for each of 33 complete years at Santa Rosa California, 1992 to 2025. Blue stripes are years cooler than the station's own mean of 15.1 C (59.2 F); red stripes are warmer. The coolest year was 1994, at 13.9 C (57.0 F), and the warmest was 2020, at 16.2 C (61.1 F). The strongest colour marks a difference of 1.3 C (2.3 F). 1992: 14.6 C, -0.5 C from the station mean1993: 14.6 C, -0.5 C from the station mean1994: 13.9 C, -1.2 C from the station mean1995: 15.2 C, 0.0 C from the station mean1996: 15.3 C, +0.2 C from the station mean1997: 15.5 C, +0.4 C from the station mean1998: 14.1 C, -1.0 C from the station mean1999: 14.2 C, -0.9 C from the station mean2000: 14.9 C, -0.2 C from the station mean2001: 15.3 C, +0.2 C from the station mean2002: 15.0 C, -0.1 C from the station mean2003: 15.5 C, +0.3 C from the station mean2004: 15.8 C, +0.6 C from the station mean2005: 14.9 C, -0.2 C from the station mean2006: 15.1 C, 0.0 C from the station mean2007: 15.0 C, -0.1 C from the station mean2008: 15.1 C, -0.1 C from the station mean2009: 14.9 C, -0.3 C from the station mean2011: 14.2 C, -0.9 C from the station mean2012: 14.7 C, -0.4 C from the station mean2013: 15.2 C, +0.1 C from the station mean2014: 16.2 C, +1.1 C from the station mean2015: 16.2 C, +1.1 C from the station mean2016: 15.5 C, +0.3 C from the station mean2017: 15.6 C, +0.5 C from the station mean2018: 15.4 C, +0.3 C from the station mean2019: 15.4 C, +0.3 C from the station mean2020: 16.2 C, +1.1 C from the station mean2021: 15.1 C, 0.0 C from the station mean2022: 15.5 C, +0.4 C from the station mean2023: 14.5 C, -0.6 C from the station mean2024: 15.7 C, +0.6 C from the station mean2025: 15.0 C, -0.1 C from the station mean19921995200020052010201520202025
One stripe for each of 33 complete years at Santa Rosa California, 1992 to 2025. Blue stripes are years cooler than the station's own mean of 15.1 C (59.2 F); red stripes are warmer. The coolest year was 1994, at 13.9 C (57.0 F), and the warmest was 2020, at 16.2 C (61.1 F). The strongest colour marks a difference of 1.3 C (2.3 F).
Annual mean temperature at Santa Rosa California as warming stripes, 1992 to 2025
YearAnnual mean temperatureDifference from the station mean
199214.6 C-0.49 C
199314.6 C-0.53 C
199413.9 C-1.21 C
199515.2 C+0.03 C
199615.3 C+0.18 C
199715.5 C+0.35 C
199814.1 C-1.05 C
199914.2 C-0.90 C
200014.9 C-0.22 C
200115.3 C+0.15 C
200215.0 C-0.11 C
200315.5 C+0.34 C
200415.8 C+0.63 C
200514.9 C-0.19 C
200615.1 C-0.01 C
200715.0 C-0.13 C
200815.1 C-0.06 C
200914.9 C-0.27 C
201114.2 C-0.95 C
201214.7 C-0.44 C
201315.2 C+0.06 C
201416.2 C+1.06 C
201516.2 C+1.06 C
201615.5 C+0.33 C
201715.6 C+0.52 C
201815.4 C+0.26 C
201915.4 C+0.28 C
202016.2 C+1.07 C
202115.1 C+0.00 C
202215.5 C+0.35 C
202314.5 C-0.64 C
202415.7 C+0.55 C
202515.0 C-0.09 C

The annual mean temperature here has risen by 0.2 C (0.1 to 0.4) per decade over 1992 to 2025. In Fahrenheit: 0.4 F (0.1 to 0.8) per decade. The slope is a straight line fitted to 33 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Santa Rosa California
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.2 C (0.1 to 0.4) per decade0.4 F (0.1 to 0.8) per decade1992 to 202533Rise
Mean daily maximum0.26 C (0.00 to 0.52) per decade0.46 F (-0.01 to 0.93) per decade1992 to 202533Not clearly different from zero
Mean daily minimum0.24 C (0.05 to 0.43) per decade0.4 F (0.1 to 0.8) per decade1992 to 202533Rise

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

1991 to 2026
Yearly extremes at Santa Rosa California: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)43.9 C (111.0 F)200637.8 C (100.0 F)36
Coldest night (TNn)-4.4 C (24.1 F)19980.0 C (32.0 F)36

Hottest day (TXx)

Hottest day (TXx) at Santa Rosa California by year The hottest day of the year at Santa Rosa California, 1991 to 2026. The record is 43.9 C (111.0 F) in 2006, marked on the chart; the median year is 37.8 C (100.0 F). 32.53537.54042.545200020102020Record: 43.9 C (111.0 F) in 2006
The hottest day of the year at Santa Rosa California, 1991 to 2026. The record is 43.9 C (111.0 F) in 2006, marked on the chart; the median year is 37.8 C (100.0 F).
Hottest day (TXx) at Santa Rosa California by year
YearHottest day (TXx)
199137.2 C (99.0 F)
199234.4 C (93.9 F)
199337.8 C (100.0 F)
199434.4 C (93.9 F)
199537.2 C (99.0 F)
199637.8 C (100.0 F)
199736.1 C (97.0 F)
199841.1 C (106.0 F)
199937.8 C (100.0 F)
200042.8 C (109.0 F)
200139.4 C (102.9 F)
200238.9 C (102.0 F)
200340.6 C (105.1 F)
200437.8 C (100.0 F)
200536.1 C (97.0 F)
200643.9 C (111.0 F)
200737.2 C (99.0 F)
200838.9 C (102.0 F)
200937.8 C (100.0 F)
201041.1 C (106.0 F)
201135.6 C (96.1 F)
201238.9 C (102.0 F)
201337.2 C (99.0 F)
201435.6 C (96.1 F)
201538.9 C (102.0 F)
201637.2 C (99.0 F)
201743.3 C (109.9 F)
201835.0 C (95.0 F)
201938.3 C (100.9 F)
202043.3 C (109.9 F)
202138.9 C (102.0 F)
202243.3 C (109.9 F)
202337.2 C (99.0 F)
202440.0 C (104.0 F)
202536.7 C (98.1 F)
202637.8 C (100.0 F)

Coldest night (TNn)

Coldest night (TNn) at Santa Rosa California by year The coldest night of the year at Santa Rosa California, 1991 to 2026. The record is -4.4 C (24.1 F) in 1998, marked on the chart; the median year is 0.0 C (32.0 F). -6-4-2024200020102020Record: -4.4 C (24.1 F) in 1998
The coldest night of the year at Santa Rosa California, 1991 to 2026. The record is -4.4 C (24.1 F) in 1998, marked on the chart; the median year is 0.0 C (32.0 F).
Coldest night (TNn) at Santa Rosa California by year
YearColdest night (TNn)
19910.6 C (33.1 F)
1992-1.7 C (28.9 F)
1993-2.2 C (28.0 F)
1994-2.2 C (28.0 F)
19950.6 C (33.1 F)
1996-0.6 C (30.9 F)
19970.0 C (32.0 F)
1998-4.4 C (24.1 F)
1999-1.7 C (28.9 F)
20000.6 C (33.1 F)
20010.6 C (33.1 F)
2002-1.7 C (28.9 F)
20030.0 C (32.0 F)
2004-1.1 C (30.0 F)
20051.1 C (34.0 F)
2006-1.7 C (28.9 F)
2007-0.6 C (30.9 F)
20080.0 C (32.0 F)
2009-1.7 C (28.9 F)
20100.6 C (33.1 F)
2011-1.7 C (28.9 F)
20120.0 C (32.0 F)
2013-1.1 C (30.0 F)
20142.2 C (36.0 F)
20150.0 C (32.0 F)
20160.6 C (33.1 F)
20170.6 C (33.1 F)
20180.0 C (32.0 F)
20190.6 C (33.1 F)
20201.7 C (35.1 F)
20211.7 C (35.1 F)
20220.0 C (32.0 F)
20230.0 C (32.0 F)
20242.2 C (36.0 F)
20250.6 C (33.1 F)
20261.1 C (34.0 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 Santa Rosa California standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Santa Rosa 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 (2026-10-14).