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Santa Rosa Weather Records (MXN00030158)

Record envelope, standing records and threshold days for Santa Rosa (MXN00030158), Mexico, with 54 years of record.

Key Facts for Santa Rosa

  • Santa Rosa (MXN00030158) is a weather station in Mexico at 19.45 latitude and -96.45 longitude, 65 m (213 ft) above sea level.
  • The station reports from 1958 to 2011, 54 years of record.
  • 1,464 records set at Santa Rosa still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Santa Rosa set a daily record precipitation of 19.8 mm (0.8 in) on 16 December 2011.

About the Station

  • Location: Mexico, 19.45 latitude, -96.45 longitude.
  • Elevation: 65 m (213 ft).
  • Period of record: 1958 to 2011, 54 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Santa Rosa, with 2026 drawn through them The band shows the record high and record low for each calendar day at Santa Rosa. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 01020304050 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Santa Rosa. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Santa Rosa, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan37.2 C (99.0 F)2.8 C (37.0 F)n/an/a
Feb40.0 C (104.0 F)5.0 C (41.0 F)n/an/a
Mar45.6 C (114.1 F)3.9 C (39.0 F)n/an/a
Apr44.4 C (111.9 F)5.6 C (42.1 F)n/an/a
May42.2 C (108.0 F)11.7 C (53.1 F)n/an/a
Jun41.1 C (106.0 F)12.8 C (55.0 F)n/an/a
Jul40.6 C (105.1 F)12.2 C (54.0 F)n/an/a
Aug41.1 C (106.0 F)11.1 C (52.0 F)n/an/a
Sep41.1 C (106.0 F)12.2 C (54.0 F)n/an/a
Oct39.4 C (102.9 F)10.0 C (50.0 F)n/an/a
Nov40.6 C (105.1 F)3.3 C (37.9 F)n/an/a
Dec40.0 C (104.0 F)2.8 C (37.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Santa Rosa by the year they were set 1,464 records at Santa Rosa still stand. 1958 holds the most, with 116. 0501001501958: 1161959: 401960: 271961: 251962: 761963: 1121964: 301965: 101966: 141967: 241968: 291969: 721970: 441971: 701972: 331973: 921974: 391975: 211976: 41977: 151978: 81979: 171980: 111981: 291982: 251983: 211984: 381985: 231986: 261987: 341988: 231989: 191990: 121991: 141992: 141993: 181994: 111995: 111996: 171997: 101998: 161999: 122000: 192001: 72002: 132003: 112004: 92005: 92006: 62007: 112008: 82009: 152010: 332011: 21195819641970197619821988199420002006
1,464 records at Santa Rosa still stand. 1958 holds the most, with 116.
Standing records at Santa Rosa by the year they were set
Year setStanding records
1958116
195940
196027
196125
196276
1963112
196430
196510
196614
196724
196829
196972
197044
197170
197233
197392
197439
197521
19764
197715
19788
197917
198011
198129
198225
198321
198438
198523
198626
198734
198823
198919
199012
199114
199214
199318
199411
199511
199617
199710
199816
199912
200019
20017
200213
200311
20049
20059
20066
200711
20088
200915
201033
201121

All-Time Record Progression

1 new records
When Santa Rosa set new all-time records 1 all-time records were set at Santa Rosa between 23 December 1989 and 23 December 1989. Each dot is a new record. Record low maximum temperature23 December 1989: Record low maximum temperature 12.8 C (55.0 F)1990
1 all-time records were set at Santa Rosa between 23 December 1989 and 23 December 1989. Each dot is a new record.
When Santa Rosa set new all-time records
DateKindDetail
1989-12-23Record low maximum temperatureRecord low maximum temperature 12.8 C (55.0 F)

Wettest Day of Each Month

Aug: 204.0 mm (8.0 in)
Record daily precipitation for each month at Santa Rosa The wettest day on record for each calendar month at Santa Rosa. The most was 204.0 mm (8.0 in) on 5 August 1979. 0100200300 Jan: 28.4 mm (1.1 in), 21 January 1994 Jan Feb: 72.9 mm (2.9 in), 17 February 1969 Feb Mar: 43.2 mm (1.7 in), 1 March 1995 Mar Apr: 76.2 mm (3.0 in), 8 April 1997 Apr May: 69.1 mm (2.7 in), 22 May 1982 May Jun: 177.8 mm (7.0 in), 25 June 1966 Jun Jul: 166.9 mm (6.6 in), 30 July 1961 Jul Aug: 204.0 mm (8.0 in), 5 August 1979 Aug Sep: 190.0 mm (7.5 in), 17 September 2010 Sep Oct: 116.6 mm (4.6 in), 13 October 1973 Oct Nov: 80.5 mm (3.2 in), 11 November 1986 Nov Dec: 59.9 mm (2.4 in), 24 December 1984 Dec
The wettest day on record for each calendar month at Santa Rosa. The most was 204.0 mm (8.0 in) on 5 August 1979.
Record daily precipitation for each month at Santa Rosa
MonthRecord daily precipitation (mm)Date
Jan28.4 mm (1.1 in)21 January 1994
Feb72.9 mm (2.9 in)17 February 1969
Mar43.2 mm (1.7 in)1 March 1995
Apr76.2 mm (3.0 in)8 April 1997
May69.1 mm (2.7 in)22 May 1982
Jun177.8 mm (7.0 in)25 June 1966
Jul166.9 mm (6.6 in)30 July 1961
Aug204.0 mm (8.0 in)5 August 1979
Sep190.0 mm (7.5 in)17 September 2010
Oct116.6 mm (4.6 in)13 October 1973
Nov80.5 mm (3.2 in)11 November 1986
Dec59.9 mm (2.4 in)24 December 1984

Period of Record Coverage

1958 to 2011
Days with data per year at Santa Rosa 54 years of record at Santa Rosa, 1958 to 2011. 4 years have data for under 90 percent of days and are left out of rankings: 1958, 1959, 1966, 2008. 1958: 174 of 365 days1959: 326 of 365 days1960: 365 of 366 days1961: 365 of 365 days1962: 351 of 365 days1963: 364 of 365 days1964: 366 of 366 days1965: 356 of 365 days1966: 267 of 365 days1967: 365 of 365 days1968: 365 of 366 days1969: 362 of 365 days1970: 365 of 365 days1971: 345 of 365 days1972: 366 of 366 days1973: 364 of 365 days1974: 348 of 365 days1975: 364 of 365 days1976: 365 of 366 days1977: 364 of 365 days1978: 364 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 363 of 365 days1982: 365 of 365 days1983: 364 of 365 days1984: 365 of 366 days1985: 365 of 365 days1986: 364 of 365 days1987: 365 of 365 days1988: 366 of 366 days1989: 365 of 365 days1990: 362 of 365 days1991: 364 of 365 days1992: 365 of 366 days1993: 365 of 365 days1994: 365 of 365 days1995: 364 of 365 days1996: 366 of 366 days1997: 365 of 365 days1998: 365 of 365 days1999: 365 of 365 days2000: 366 of 366 days2001: 365 of 365 days2002: 334 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 334 of 365 days2008: 276 of 366 days2009: 335 of 365 days2010: 364 of 365 days2011: 335 of 365 days196019701980199020002010
54 years of record at Santa Rosa, 1958 to 2011. 4 years have data for under 90 percent of days and are left out of rankings: 1958, 1959, 1966, 2008.
Days with data per year at Santa Rosa
YearDays with dataShare of yearComplete
195817448%No
195932689%No
1960365100%Yes
1961365100%Yes
196235196%Yes
1963364100%Yes
1964366100%Yes
196535698%Yes
196626773%No
1967365100%Yes
1968365100%Yes
196936299%Yes
1970365100%Yes
197134595%Yes
1972366100%Yes
1973364100%Yes
197434895%Yes
1975364100%Yes
1976365100%Yes
1977364100%Yes
1978364100%Yes
1979365100%Yes
1980366100%Yes
198136399%Yes
1982365100%Yes
1983364100%Yes
1984365100%Yes
1985365100%Yes
1986364100%Yes
1987365100%Yes
1988366100%Yes
1989365100%Yes
199036299%Yes
1991364100%Yes
1992365100%Yes
1993365100%Yes
1994365100%Yes
1995364100%Yes
1996366100%Yes
1997365100%Yes
1998365100%Yes
1999365100%Yes
2000366100%Yes
2001365100%Yes
200233492%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
200733492%Yes
200827675%No
200933592%Yes
2010364100%Yes
201133592%Yes

Latest Records

20
Latest records at Santa Rosa
DateStationRecordValueBeat old record byOld record stoodSignificance
16 December 2011Santa Rosa, MXdaily rain19.8 mm (0.8 in)15.7 mm (0.6 in)10 years20 of 100 (Routine)
5 December 2011Santa Rosa, MXdaily low min (Tie)10.6 C (51.1 F)tie20 years2 of 100 (Routine)
2 December 2011Santa Rosa, MXdaily low min (Tie)7.8 C (46.0 F)tie0 years1 of 100 (Routine)
1 December 2011Santa Rosa, MXdaily low min5.6 C (42.1 F)3.8 C (6.8 F)24 years23 of 100 (Routine)
30 November 2011Santa Rosa, MXdaily low min5.0 C (41.0 F)1.7 C (3.1 F)24 years17 of 100 (Routine)
28 November 2011Santa Rosa, MXdaily low min5.6 C (42.1 F)3.3 C (5.9 F)18 years20 of 100 (Routine)
17 November 2011Santa Rosa, MXdaily rain41.9 mm (1.6 in)40.1 mm (1.6 in)12 years48 of 100 (Notable)
9 November 2011Santa Rosa, MXdaily rain21.3 mm (0.8 in)14.9 mm (0.6 in)28 years20 of 100 (Routine)
28 October 2011Santa Rosa, MXdaily low min10.6 C (51.1 F)2.2 C (4.0 F)0 years12 of 100 (Routine)
27 October 2011Santa Rosa, MXdaily low min (Tie)11.7 C (53.1 F)tie28 years3 of 100 (Routine)
21 October 2011Santa Rosa, MXdaily low min11.7 C (53.1 F)0.5 C (0.9 F)13 years10 of 100 (Routine)
20 October 2011Santa Rosa, MXmonthly low min (Tie)10.0 C (50.0 F)tie24 years5 of 100 (Routine)
14 September 2011Santa Rosa, MXdaily low min (Tie)15.0 C (59.0 F)tie29 years3 of 100 (Routine)
13 September 2011Santa Rosa, MXdaily low min15.0 C (59.0 F)1.1 C (2.0 F)30 years18 of 100 (Routine)
12 September 2011Santa Rosa, MXdaily low min13.9 C (57.0 F)2.2 C (4.0 F)29 years21 of 100 (Routine)
11 September 2011Santa Rosa, MXdaily low min12.8 C (55.0 F)2.2 C (4.0 F)24 years20 of 100 (Routine)
10 September 2011Santa Rosa, MXdaily low min12.8 C (55.0 F)1.1 C (2.0 F)22 years15 of 100 (Routine)
9 September 2011Santa Rosa, MXdaily low min12.8 C (55.0 F)2.2 C (4.0 F)26 years21 of 100 (Routine)
8 September 2011Santa Rosa, MXdaily low min12.8 C (55.0 F)2.2 C (4.0 F)25 years20 of 100 (Routine)
8 September 2011Santa Rosa, MXdaily low max (Tie)28.9 C (84.0 F)tie48 years4 of 100 (Routine)

Climate Trend

44 complete years, 1960 to 2010
Annual mean temperature at Santa Rosa as warming stripes, 1960 to 2010 One stripe for each of 44 complete years at Santa Rosa, 1960 to 2010. Blue stripes are years cooler than the station's own mean of 24.1 C (75.4 F); red stripes are warmer. The coolest year was 2010, at 22.4 C (72.4 F), and the warmest was 1969, at 27.2 C (81.0 F). The strongest colour marks a difference of 3.2 C (5.8 F). 1960: 24.7 C, +0.5 C from the station mean1961: 25.0 C, +0.9 C from the station mean1962: 24.5 C, +0.4 C from the station mean1963: 23.8 C, -0.3 C from the station mean1964: 26.0 C, +1.9 C from the station mean1965: 26.4 C, +2.2 C from the station mean1967: 26.5 C, +2.4 C from the station mean1968: 26.7 C, +2.5 C from the station mean1969: 27.2 C, +3.1 C from the station mean1970: 26.7 C, +2.6 C from the station mean1972: 26.5 C, +2.4 C from the station mean1973: 27.2 C, +3.1 C from the station mean1975: 25.9 C, +1.8 C from the station mean1976: 24.7 C, +0.6 C from the station mean1977: 24.9 C, +0.8 C from the station mean1978: 24.5 C, +0.4 C from the station mean1979: 23.9 C, -0.2 C from the station mean1980: 23.7 C, -0.4 C from the station mean1981: 23.5 C, -0.6 C from the station mean1982: 25.3 C, +1.2 C from the station mean1983: 24.9 C, +0.8 C from the station mean1984: 22.5 C, -1.6 C from the station mean1985: 22.9 C, -1.2 C from the station mean1986: 22.7 C, -1.4 C from the station mean1987: 22.5 C, -1.6 C from the station mean1988: 22.8 C, -1.4 C from the station mean1989: 23.0 C, -1.1 C from the station mean1990: 23.0 C, -1.2 C from the station mean1991: 23.6 C, -0.5 C from the station mean1992: 22.8 C, -1.3 C from the station mean1993: 23.1 C, -1.0 C from the station mean1994: 23.5 C, -0.6 C from the station mean1995: 23.9 C, -0.2 C from the station mean1996: 23.1 C, -1.0 C from the station mean1997: 23.2 C, -0.9 C from the station mean1998: 23.7 C, -0.4 C from the station mean1999: 22.6 C, -1.6 C from the station mean2000: 22.6 C, -1.6 C from the station mean2001: 22.7 C, -1.4 C from the station mean2003: 22.9 C, -1.3 C from the station mean2004: 22.8 C, -1.3 C from the station mean2005: 22.9 C, -1.2 C from the station mean2006: 23.6 C, -0.6 C from the station mean2010: 22.4 C, -1.7 C from the station mean19601965197019751980198519901995200020052010
One stripe for each of 44 complete years at Santa Rosa, 1960 to 2010. Blue stripes are years cooler than the station's own mean of 24.1 C (75.4 F); red stripes are warmer. The coolest year was 2010, at 22.4 C (72.4 F), and the warmest was 1969, at 27.2 C (81.0 F). The strongest colour marks a difference of 3.2 C (5.8 F).
Annual mean temperature at Santa Rosa as warming stripes, 1960 to 2010
YearAnnual mean temperatureDifference from the station mean
196024.7 C+0.54 C
196125.0 C+0.86 C
196224.5 C+0.41 C
196323.8 C-0.30 C
196426.0 C+1.89 C
196526.4 C+2.24 C
196726.5 C+2.42 C
196826.7 C+2.54 C
196927.2 C+3.11 C
197026.7 C+2.58 C
197226.5 C+2.42 C
197327.2 C+3.07 C
197525.9 C+1.77 C
197624.7 C+0.61 C
197724.9 C+0.82 C
197824.5 C+0.41 C
197923.9 C-0.23 C
198023.7 C-0.38 C
198123.5 C-0.58 C
198225.3 C+1.22 C
198324.9 C+0.82 C
198422.5 C-1.64 C
198522.9 C-1.20 C
198622.7 C-1.44 C
198722.5 C-1.62 C
198822.8 C-1.35 C
198923.0 C-1.10 C
199023.0 C-1.15 C
199123.6 C-0.53 C
199222.8 C-1.32 C
199323.1 C-1.02 C
199423.5 C-0.63 C
199523.9 C-0.24 C
199623.1 C-1.01 C
199723.2 C-0.90 C
199823.7 C-0.42 C
199922.6 C-1.55 C
200022.6 C-1.56 C
200122.7 C-1.41 C
200322.9 C-1.27 C
200422.8 C-1.33 C
200522.9 C-1.20 C
200623.6 C-0.56 C
201022.4 C-1.69 C

The annual mean temperature here has fallen by 0.8 C (0.6 to 1.0) per decade over 1960 to 2010. In Fahrenheit: 1.4 F (1.0 to 1.8) per decade. The slope is a straight line fitted to 44 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Santa Rosa
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.8 C (-1.0 to -0.6) per decade-1.4 F (-1.8 to -1.0) per decade1960 to 201044Fall
Mean daily maximum-0.28 C (-0.59 to 0.03) per decade-0.51 F (-1.07 to 0.05) per decade1960 to 201044Not clearly different from zero
Mean daily minimum-1.3 C (-1.6 to -1.0) per decade-2.3 F (-2.8 to -1.8) per decade1960 to 201044Fall

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

1958 to 2011
Yearly extremes at Santa Rosa: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)45.6 C (114.1 F)196938.9 C (102.0 F)54
Coldest night (TNn)2.8 C (37.0 F)19837.2 C (45.0 F)54
Wettest day (Rx1day)204.0 mm (8.0 in)1979100.3 mm (3.9 in)54
Wettest five days (Rx5day)422.7 mm (16.6 in)1972179.8 mm (7.1 in)54
Longest dry spell (CDD)151 days200253 days54

Hottest day (TXx)

Hottest day (TXx) at Santa Rosa by year The hottest day of the year at Santa Rosa, 1958 to 2011. The record is 45.6 C (114.1 F) in 1969, marked on the chart; the median year is 38.9 C (102.0 F). 35404550196019701980199020002010Record: 45.6 C (114.1 F) in 1969
The hottest day of the year at Santa Rosa, 1958 to 2011. The record is 45.6 C (114.1 F) in 1969, marked on the chart; the median year is 38.9 C (102.0 F).
Hottest day (TXx) at Santa Rosa by year
YearHottest day (TXx)
195837.8 C (100.0 F)
195938.3 C (100.9 F)
196035.6 C (96.1 F)
196138.9 C (102.0 F)
196237.8 C (100.0 F)
196335.0 C (95.0 F)
196440.6 C (105.1 F)
196538.9 C (102.0 F)
196637.8 C (100.0 F)
196740.0 C (104.0 F)
196842.2 C (108.0 F)
196945.6 C (114.1 F)
197040.6 C (105.1 F)
197143.9 C (111.0 F)
197240.0 C (104.0 F)
197342.8 C (109.0 F)
197444.4 C (111.9 F)
197541.1 C (106.0 F)
197641.1 C (106.0 F)
197738.9 C (102.0 F)
197841.7 C (107.1 F)
197941.1 C (106.0 F)
198041.1 C (106.0 F)
198140.0 C (104.0 F)
198240.6 C (105.1 F)
198341.1 C (106.0 F)
198440.6 C (105.1 F)
198537.8 C (100.0 F)
198638.3 C (100.9 F)
198736.7 C (98.1 F)
198838.9 C (102.0 F)
198940.0 C (104.0 F)
199040.0 C (104.0 F)
199139.4 C (102.9 F)
199237.2 C (99.0 F)
199339.4 C (102.9 F)
199439.4 C (102.9 F)
199540.0 C (104.0 F)
199637.8 C (100.0 F)
199740.0 C (104.0 F)
199841.7 C (107.1 F)
199938.9 C (102.0 F)
200037.2 C (99.0 F)
200135.0 C (95.0 F)
200236.7 C (98.1 F)
200338.9 C (102.0 F)
200438.3 C (100.9 F)
200537.2 C (99.0 F)
200638.3 C (100.9 F)
200738.3 C (100.9 F)
200836.7 C (98.1 F)
200937.8 C (100.0 F)
201036.7 C (98.1 F)
201138.9 C (102.0 F)

Coldest night (TNn)

Coldest night (TNn) at Santa Rosa by year The coldest night of the year at Santa Rosa, 1958 to 2011. The record is 2.8 C (37.0 F) in 1983, marked on the chart; the median year is 7.2 C (45.0 F). 05101520196019701980199020002010Record: 2.8 C (37.0 F) in 1983
The coldest night of the year at Santa Rosa, 1958 to 2011. The record is 2.8 C (37.0 F) in 1983, marked on the chart; the median year is 7.2 C (45.0 F).
Coldest night (TNn) at Santa Rosa by year
YearColdest night (TNn)
195816.1 C (61.0 F)
195911.1 C (52.0 F)
19606.7 C (44.1 F)
196110.0 C (50.0 F)
196210.0 C (50.0 F)
19638.9 C (48.0 F)
196411.1 C (52.0 F)
196512.8 C (55.0 F)
19669.4 C (48.9 F)
196710.0 C (50.0 F)
196810.0 C (50.0 F)
196912.2 C (54.0 F)
19709.4 C (48.9 F)
197111.1 C (52.0 F)
197210.6 C (51.1 F)
19739.4 C (48.9 F)
197410.0 C (50.0 F)
197510.0 C (50.0 F)
197610.0 C (50.0 F)
19777.2 C (45.0 F)
197810.0 C (50.0 F)
19796.7 C (44.1 F)
19806.7 C (44.1 F)
19816.1 C (43.0 F)
19823.9 C (39.0 F)
19832.8 C (37.0 F)
19848.3 C (46.9 F)
19854.4 C (39.9 F)
19862.8 C (37.0 F)
19874.4 C (39.9 F)
19886.1 C (43.0 F)
19895.6 C (42.1 F)
19905.6 C (42.1 F)
19916.7 C (44.1 F)
19927.2 C (45.0 F)
19933.9 C (39.0 F)
19947.2 C (45.0 F)
19958.9 C (48.0 F)
19964.4 C (39.9 F)
19973.9 C (39.0 F)
19986.1 C (43.0 F)
19995.6 C (42.1 F)
20006.1 C (43.0 F)
20017.2 C (45.0 F)
20026.7 C (44.1 F)
20033.3 C (37.9 F)
20048.9 C (48.0 F)
20055.6 C (42.1 F)
20067.2 C (45.0 F)
20077.8 C (46.0 F)
20086.7 C (44.1 F)
20096.7 C (44.1 F)
20103.9 C (39.0 F)
20113.9 C (39.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Santa Rosa by year The wettest day of the year at Santa Rosa, 1958 to 2011. The record is 204.0 mm (8.0 in) in 1979, marked on the chart; the median year is 100.3 mm (3.9 in). 050100150200250196019701980199020002010Record: 204.0 mm (8.0 in) in 1979
The wettest day of the year at Santa Rosa, 1958 to 2011. The record is 204.0 mm (8.0 in) in 1979, marked on the chart; the median year is 100.3 mm (3.9 in).
Wettest day (Rx1day) at Santa Rosa by year
YearWettest day (Rx1day)
1958110.5 mm (4.4 in)
1959107.4 mm (4.2 in)
1960168.4 mm (6.6 in)
1961166.9 mm (6.6 in)
196248.8 mm (1.9 in)
1963105.4 mm (4.1 in)
1964102.4 mm (4.0 in)
196559.9 mm (2.4 in)
1966177.8 mm (7.0 in)
1967120.4 mm (4.7 in)
196870.9 mm (2.8 in)
1969125.0 mm (4.9 in)
1970178.8 mm (7.0 in)
1971102.9 mm (4.1 in)
1972139.7 mm (5.5 in)
1973125.2 mm (4.9 in)
1974185.2 mm (7.3 in)
197597.3 mm (3.8 in)
197698.3 mm (3.9 in)
197759.9 mm (2.4 in)
197884.6 mm (3.3 in)
1979204.0 mm (8.0 in)
198067.8 mm (2.7 in)
1981105.2 mm (4.1 in)
198269.1 mm (2.7 in)
1983107.4 mm (4.2 in)
1984127.5 mm (5.0 in)
1985113.3 mm (4.5 in)
1986111.3 mm (4.4 in)
198753.3 mm (2.1 in)
198856.4 mm (2.2 in)
198999.8 mm (3.9 in)
199074.7 mm (2.9 in)
199179.8 mm (3.1 in)
1992130.8 mm (5.1 in)
1993126.7 mm (5.0 in)
199474.9 mm (2.9 in)
199564.3 mm (2.5 in)
199689.9 mm (3.5 in)
199796.5 mm (3.8 in)
199886.1 mm (3.4 in)
1999157.0 mm (6.2 in)
200075.2 mm (3.0 in)
200179.8 mm (3.1 in)
200264.8 mm (2.6 in)
2003108.0 mm (4.3 in)
200491.9 mm (3.6 in)
2005129.3 mm (5.1 in)
200697.8 mm (3.9 in)
200799.8 mm (3.9 in)
200886.9 mm (3.4 in)
200950.8 mm (2.0 in)
2010190.0 mm (7.5 in)
2011100.8 mm (4.0 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Santa Rosa by year The wettest five days of the year at Santa Rosa, 1958 to 2011. The record is 422.7 mm (16.6 in) in 1972, marked on the chart; the median year is 179.8 mm (7.1 in). 100200300400500196019701980199020002010Record: 422.7 mm (16.6 in) in 1972
The wettest five days of the year at Santa Rosa, 1958 to 2011. The record is 422.7 mm (16.6 in) in 1972, marked on the chart; the median year is 179.8 mm (7.1 in).
Wettest five days (Rx5day) at Santa Rosa by year
YearWettest five days (Rx5day)
1958227.3 mm (8.9 in)
1959112.7 mm (4.4 in)
1960193.1 mm (7.6 in)
1961209.1 mm (8.2 in)
1962105.4 mm (4.1 in)
1963214.9 mm (8.5 in)
1964169.8 mm (6.7 in)
1965152.9 mm (6.0 in)
1966323.6 mm (12.7 in)
1967229.7 mm (9.0 in)
1968170.4 mm (6.7 in)
1969199.2 mm (7.8 in)
1970243.1 mm (9.6 in)
1971176.1 mm (6.9 in)
1972422.7 mm (16.6 in)
1973183.4 mm (7.2 in)
1974384.9 mm (15.2 in)
1975296.9 mm (11.7 in)
1976264.1 mm (10.4 in)
1977116.3 mm (4.6 in)
1978128.2 mm (5.0 in)
1979244.6 mm (9.6 in)
1980153.5 mm (6.0 in)
1981192.9 mm (7.6 in)
1982108.5 mm (4.3 in)
1983332.0 mm (13.1 in)
1984204.5 mm (8.1 in)
1985132.9 mm (5.2 in)
1986191.7 mm (7.5 in)
1987118.6 mm (4.7 in)
1988155.4 mm (6.1 in)
1989137.1 mm (5.4 in)
1990137.7 mm (5.4 in)
1991152.4 mm (6.0 in)
1992198.0 mm (7.8 in)
1993228.1 mm (9.0 in)
1994116.3 mm (4.6 in)
1995140.0 mm (5.5 in)
1996122.2 mm (4.8 in)
1997139.5 mm (5.5 in)
1998152.9 mm (6.0 in)
1999198.6 mm (7.8 in)
2000206.0 mm (8.1 in)
2001150.5 mm (5.9 in)
2002131.6 mm (5.2 in)
2003138.7 mm (5.5 in)
2004214.4 mm (8.4 in)
2005243.8 mm (9.6 in)
2006232.5 mm (9.2 in)
2007133.9 mm (5.3 in)
2008146.5 mm (5.8 in)
2009112.3 mm (4.4 in)
2010223.6 mm (8.8 in)
2011189.3 mm (7.5 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Santa Rosa by year The longest dry spell of the year at Santa Rosa, 1958 to 2011. The record is 151 days in 2002, marked on the chart; the median year is 53 days. 050100150200196019701980199020002010Record: 151 days in 2002
The longest dry spell of the year at Santa Rosa, 1958 to 2011. The record is 151 days in 2002, marked on the chart; the median year is 53 days.
Longest dry spell (CDD) at Santa Rosa by year
YearLongest dry spell (CDD)
195825 days
195961 days
196064 days
196169 days
196289 days
196379 days
196447 days
196533 days
196632 days
196750 days
196874 days
196940 days
1970104 days
197179 days
197251 days
197369 days
197426 days
197594 days
197657 days
197758 days
197866 days
197945 days
198042 days
198144 days
198251 days
198374 days
198455 days
198572 days
198642 days
198747 days
198837 days
198963 days
199041 days
1991103 days
199237 days
199352 days
199442 days
199553 days
199654 days
199758 days
1998100 days
199951 days
200046 days
200184 days
2002151 days
200357 days
200447 days
200549 days
200632 days
200743 days
200830 days
200955 days
201043 days
201190 days

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.

Rainfall Return Levels

51 years, 1959 to 2011

A day with at least 98.2 mm (3.9 in) of rain is expected about once in 2 years. A day with at least 226.3 mm (8.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Santa Rosa: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years98.2 mm (3.9 in)
5 years132.6 mm (5.2 in)
10 years155.4 mm (6.1 in)
25 years184.1 mm (7.2 in)
50 years205.3 mm (8.1 in)
100 years226.3 mm (8.9 in)Longer than the 51 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 51 years of values from 1959 to 2011.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 204.0 mm (8.0 in) in 1979; 190.0 mm (7.5 in) in 2010; 185.2 mm (7.3 in) in 1974.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of Santa Rosa, at 1984. Each is measured against neighbouring stations.

  • Relative to 3 neighbouring stations, the station's annual mean temperature from 1984 ran 1.0 C (1.8 F) lower than in the years before (possible change).
Suspected changes in the annual mean temperature at Santa Rosa, against neighbouring stations
YearShift (C)Shift (F)StrengthNeighbours
1984-1.0-1.8possible3

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Download the Data

  • Data for Santa Rosa standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Santa Rosa 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).