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San Francisco Weather Records (MXN00007145)

Record envelope, standing records and threshold days for San Francisco (MXN00007145), Mexico, with 64 years of record.

Key Facts for San Francisco

  • San Francisco (MXN00007145) is a weather station in Mexico at 15.87 latitude and -92.95 longitude, 540 m (1,771 ft) above sea level.
  • The station reports from 1950 to 2013, 64 years of record.
  • 1,464 records set at San Francisco still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • San Francisco tied a daily record high maximum temperature of 37.8 C (100.0 F) on 23 March 2013.

About the Station

  • Location: Mexico, 15.87 latitude, -92.95 longitude.
  • Elevation: 540 m (1,771 ft).
  • Period of record: 1950 to 2013, 64 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 San Francisco, with 2026 drawn through them The band shows the record high and record low for each calendar day at San Francisco. 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 San Francisco. 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 San Francisco, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan38.3 C (100.9 F)0.0 C (32.0 F)n/an/a
Feb39.4 C (102.9 F)2.8 C (37.0 F)n/an/a
Mar40.0 C (104.0 F)2.2 C (36.0 F)n/an/a
Apr40.0 C (104.0 F)7.8 C (46.0 F)n/an/a
May43.3 C (109.9 F)10.6 C (51.1 F)n/an/a
Jun41.1 C (106.0 F)11.7 C (53.1 F)n/an/a
Jul39.4 C (102.9 F)12.2 C (54.0 F)n/an/a
Aug38.9 C (102.0 F)12.8 C (55.0 F)n/an/a
Sep36.1 C (97.0 F)12.2 C (54.0 F)n/an/a
Oct37.8 C (100.0 F)8.9 C (48.0 F)n/an/a
Nov37.2 C (99.0 F)5.6 C (42.1 F)n/an/a
Dec39.4 C (102.9 F)1.1 C (34.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at San Francisco by the year they were set 1,464 records at San Francisco still stand. 1990 holds the most, with 220. 01002003001950: 171951: 251952: 171953: 291954: 171955: 141956: 161957: 41958: 201959: 151960: 51961: 31962: 31963: 131964: 171965: 911966: 181967: 461968: 381969: 311970: 291971: 161972: 161973: 331974: 241975: 131976: 241977: 221978: 261979: 251980: 111981: 131982: 81983: 81984: 11985: 91986: 231987: 171988: 101989: 761990: 2201991: 221992: 61993: 81994: 41997: 171998: 381999: 112000: 112001: 102002: 362003: 172004: 92005: 72006: 482007: 372008: 292009: 532010: 232011: 22012: 72013: 6195019571964197119781985199220012008
1,464 records at San Francisco still stand. 1990 holds the most, with 220.
Standing records at San Francisco by the year they were set
Year setStanding records
195017
195125
195217
195329
195417
195514
195616
19574
195820
195915
19605
19613
19623
196313
196417
196591
196618
196746
196838
196931
197029
197116
197216
197333
197424
197513
197624
197722
197826
197925
198011
198113
19828
19838
19841
19859
198623
198717
198810
198976
1990220
199122
19926
19938
19944
199717
199838
199911
200011
200110
200236
200317
20049
20057
200648
200737
200829
200953
201023
20112
20127
20136

All-Time Record Progression

3 new records
When San Francisco set new all-time records 3 all-time records were set at San Francisco between 12 May 1998 and 20 July 2006. Each dot is a new record. Record high maximum temperatureRecord daily precipitation12 May 1998: Record high maximum temperature 43.3 C (109.9 F)7 September 1998: Record daily precipitation 162.8 mm (6.4 in)20 July 2006: Record daily precipitation 194.8 mm (7.7 in)20002005
3 all-time records were set at San Francisco between 12 May 1998 and 20 July 2006. Each dot is a new record.
When San Francisco set new all-time records
DateKindDetail
1998-05-12Record high maximum temperatureRecord high maximum temperature 43.3 C (109.9 F)
1998-09-07Record daily precipitationRecord daily precipitation 162.8 mm (6.4 in)
2006-07-20Record daily precipitationRecord daily precipitation 194.8 mm (7.7 in)

Wettest Day of Each Month

Jul: 194.8 mm (7.7 in)
Record daily precipitation for each month at San Francisco The wettest day on record for each calendar month at San Francisco. The most was 194.8 mm (7.7 in) on 20 July 2006. 050100150200 Jan: 18.0 mm (0.7 in), 1 January 2009 Jan Feb: 18.3 mm (0.7 in), 22 February 1976 Feb Mar: 31.0 mm (1.2 in), 29 March 1952 Mar Apr: 94.5 mm (3.7 in), 18 April 1999 Apr May: 100.8 mm (4.0 in), 12 May 1990 May Jun: 129.8 mm (5.1 in), 24 June 1975 Jun Jul: 194.8 mm (7.7 in), 20 July 2006 Jul Aug: 140.0 mm (5.5 in), 30 August 1973 Aug Sep: 162.8 mm (6.4 in), 7 September 1998 Sep Oct: 120.4 mm (4.7 in), 3 October 2005 Oct Nov: 63.8 mm (2.5 in), 9 November 1997 Nov Dec: 27.4 mm (1.1 in), 13 December 1964 Dec
The wettest day on record for each calendar month at San Francisco. The most was 194.8 mm (7.7 in) on 20 July 2006.
Record daily precipitation for each month at San Francisco
MonthRecord daily precipitation (mm)Date
Jan18.0 mm (0.7 in)1 January 2009
Feb18.3 mm (0.7 in)22 February 1976
Mar31.0 mm (1.2 in)29 March 1952
Apr94.5 mm (3.7 in)18 April 1999
May100.8 mm (4.0 in)12 May 1990
Jun129.8 mm (5.1 in)24 June 1975
Jul194.8 mm (7.7 in)20 July 2006
Aug140.0 mm (5.5 in)30 August 1973
Sep162.8 mm (6.4 in)7 September 1998
Oct120.4 mm (4.7 in)3 October 2005
Nov63.8 mm (2.5 in)9 November 1997
Dec27.4 mm (1.1 in)13 December 1964

Period of Record Coverage

1950 to 2013
Days with data per year at San Francisco 63 years of record at San Francisco, 1950 to 2013. 20 years have data for under 90 percent of days and are left out of rankings: 1950, 1957, 1958, 1959, 1960, 1961, 1962, 1963 and others. 1950: 214 of 365 days1951: 365 of 365 days1952: 366 of 366 days1953: 365 of 365 days1954: 365 of 365 days1955: 365 of 365 days1956: 366 of 366 days1957: 151 of 365 days1958: 306 of 365 days1959: 215 of 365 days1960: 213 of 366 days1961: 152 of 365 days1962: 123 of 365 days1963: 152 of 365 days1964: 366 of 366 days1965: 361 of 365 days1966: 364 of 365 days1967: 363 of 365 days1968: 365 of 366 days1969: 364 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 363 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 333 of 365 days1980: 213 of 366 days1981: 276 of 365 days1982: 248 of 365 days1983: 152 of 365 days1984: 61 of 366 days1985: 333 of 365 days1986: 183 of 365 days1987: 219 of 365 days1988: 274 of 366 days1989: 326 of 365 days1990: 364 of 365 days1991: 365 of 365 days1992: 366 of 366 days1993: 365 of 365 days1994: 365 of 365 days1995: 365 of 365 days1997: 364 of 365 days1998: 365 of 365 days1999: 365 of 365 days2000: 365 of 366 days2001: 362 of 365 days2002: 351 of 365 days2003: 364 of 365 days2004: 303 of 366 days2005: 358 of 365 days2006: 361 of 365 days2007: 242 of 365 days2008: 366 of 366 days2009: 363 of 365 days2010: 364 of 365 days2011: 363 of 365 days2012: 363 of 366 days2013: 89 of 365 days1950196019701980199020002010
63 years of record at San Francisco, 1950 to 2013. 20 years have data for under 90 percent of days and are left out of rankings: 1950, 1957, 1958, 1959, 1960, 1961, 1962, 1963 and others.
Days with data per year at San Francisco
YearDays with dataShare of yearComplete
195021459%No
1951365100%Yes
1952366100%Yes
1953365100%Yes
1954365100%Yes
1955365100%Yes
1956366100%Yes
195715141%No
195830684%No
195921559%No
196021358%No
196115242%No
196212334%No
196315242%No
1964366100%Yes
196536199%Yes
1966364100%Yes
196736399%Yes
1968365100%Yes
1969364100%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
197536399%Yes
1976366100%Yes
1977365100%Yes
1978365100%Yes
197933391%Yes
198021358%No
198127676%No
198224868%No
198315242%No
19846117%No
198533391%Yes
198618350%No
198721960%No
198827475%No
198932689%No
1990364100%Yes
1991365100%Yes
1992366100%Yes
1993365100%Yes
1994365100%Yes
1995365100%Yes
1997364100%Yes
1998365100%Yes
1999365100%Yes
2000365100%Yes
200136299%Yes
200235196%Yes
2003364100%Yes
200430383%No
200535898%Yes
200636199%Yes
200724266%No
2008366100%Yes
200936399%Yes
2010364100%Yes
201136399%Yes
201236399%Yes
20138924%No

Latest Records

20
Latest records at San Francisco
DateStationRecordValueBeat old record byOld record stoodSignificance
23 March 2013San Francisco, MXdaily high max (Tie)37.8 C (100.0 F)tie35 years4 of 100 (Routine)
22 March 2013San Francisco, MXdaily high max (Tie)37.8 C (100.0 F)tie59 years5 of 100 (Routine)
21 March 2013San Francisco, MXdaily high max (Tie)37.8 C (100.0 F)tie59 years5 of 100 (Routine)
20 March 2013San Francisco, MXdaily high max37.8 C (100.0 F)0.6 C (1.1 F)43 years20 of 100 (Routine)
6 March 2013San Francisco, MXdaily low min5.6 C (42.1 F)1.1 C (2.0 F)48 years23 of 100 (Routine)
5 March 2013San Francisco, MXdaily low min5.6 C (42.1 F)1.6 C (2.9 F)42 years23 of 100 (Routine)
4 March 2013San Francisco, MXdaily low min (Tie)6.7 C (44.1 F)tie32 years3 of 100 (Routine)
3 March 2013San Francisco, MXdaily low min (Tie)5.6 C (42.1 F)tie48 years5 of 100 (Routine)
1 March 2013San Francisco, MXdaily low max25.6 C (78.1 F)1.1 C (2.0 F)46 years23 of 100 (Routine)
19 February 2013San Francisco, MXdaily low min4.4 C (39.9 F)1.2 C (2.2 F)54 years25 of 100 (Routine)
17 February 2013San Francisco, MXdaily rain9.1 mm (0.36 in)9.1 mm (0.36 in)62 years20 of 100 (Routine)
17 January 2013San Francisco, MXdaily low max20.6 C (69.1 F)1.1 C (2.0 F)49 years23 of 100 (Routine)
6 January 2013San Francisco, MXdaily rain2.0 mm (0.08 in)1.2 mm (0.05 in)9 years9 of 100 (Routine)
1 November 2012San Francisco, MXdaily low max23.9 C (75.0 F)1.1 C (2.0 F)45 years23 of 100 (Routine)
9 September 2012San Francisco, MXdaily rain95.8 mm (3.8 in)35.9 mm (1.4 in)10 years30 of 100 (Routine)
9 August 2012San Francisco, MXdaily low max (Tie)25.0 C (77.0 F)tie23 years3 of 100 (Routine)
7 July 2012San Francisco, MXdaily low min (Tie)15.6 C (60.1 F)tie47 years5 of 100 (Routine)
6 July 2012San Francisco, MXdaily low min13.9 C (57.0 F)1.7 C (3.1 F)40 years30 of 100 (Routine)
5 July 2012San Francisco, MXdaily low min14.4 C (57.9 F)0.6 C (1.1 F)41 years22 of 100 (Routine)
26 June 2012San Francisco, MXdaily low min (Tie)16.7 C (62.1 F)tie55 years5 of 100 (Routine)

Climate Trend

39 complete years, 1951 to 2011
Annual mean temperature at San Francisco as warming stripes, 1951 to 2011 One stripe for each of 39 complete years at San Francisco, 1951 to 2011. Blue stripes are years cooler than the station's own mean of 23.7 C (74.7 F); red stripes are warmer. The coolest year was 1956, at 22.8 C (73.1 F), and the warmest was 1990, at 25.3 C (77.5 F). The strongest colour marks a difference of 1.6 C (2.9 F). 1951: 23.5 C, -0.3 C from the station mean1952: 23.8 C, 0.0 C from the station mean1953: 23.3 C, -0.5 C from the station mean1954: 23.2 C, -0.6 C from the station mean1955: 23.5 C, -0.3 C from the station mean1956: 22.8 C, -0.9 C from the station mean1964: 23.4 C, -0.4 C from the station mean1965: 23.2 C, -0.6 C from the station mean1966: 22.9 C, -0.8 C from the station mean1967: 23.2 C, -0.5 C from the station mean1968: 23.3 C, -0.5 C from the station mean1969: 23.8 C, 0.0 C from the station mean1970: 23.2 C, -0.6 C from the station mean1971: 23.0 C, -0.7 C from the station mean1972: 23.5 C, -0.2 C from the station mean1973: 23.3 C, -0.4 C from the station mean1974: 23.0 C, -0.7 C from the station mean1975: 23.2 C, -0.5 C from the station mean1976: 22.9 C, -0.9 C from the station mean1977: 23.4 C, -0.4 C from the station mean1978: 23.3 C, -0.5 C from the station mean1990: 25.3 C, +1.5 C from the station mean1991: 24.3 C, +0.5 C from the station mean1992: 24.4 C, +0.6 C from the station mean1993: 24.6 C, +0.9 C from the station mean1994: 24.4 C, +0.7 C from the station mean1995: 24.6 C, +0.8 C from the station mean1997: 24.3 C, +0.6 C from the station mean1998: 24.7 C, +0.9 C from the station mean2000: 24.0 C, +0.2 C from the station mean2001: 23.7 C, 0.0 C from the station mean2002: 24.1 C, +0.4 C from the station mean2003: 23.7 C, -0.1 C from the station mean2005: 23.7 C, -0.1 C from the station mean2006: 24.6 C, +0.9 C from the station mean2008: 24.5 C, +0.7 C from the station mean2009: 24.7 C, +1.0 C from the station mean2010: 24.4 C, +0.7 C from the station mean2011: 23.9 C, +0.2 C from the station mean1951196019701980199020002010
One stripe for each of 39 complete years at San Francisco, 1951 to 2011. Blue stripes are years cooler than the station's own mean of 23.7 C (74.7 F); red stripes are warmer. The coolest year was 1956, at 22.8 C (73.1 F), and the warmest was 1990, at 25.3 C (77.5 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at San Francisco as warming stripes, 1951 to 2011
YearAnnual mean temperatureDifference from the station mean
195123.5 C-0.30 C
195223.8 C+0.00 C
195323.3 C-0.49 C
195423.2 C-0.56 C
195523.5 C-0.30 C
195622.8 C-0.92 C
196423.4 C-0.38 C
196523.2 C-0.58 C
196622.9 C-0.83 C
196723.2 C-0.55 C
196823.3 C-0.49 C
196923.8 C+0.02 C
197023.2 C-0.60 C
197123.0 C-0.74 C
197223.5 C-0.22 C
197323.3 C-0.43 C
197423.0 C-0.75 C
197523.2 C-0.55 C
197622.9 C-0.89 C
197723.4 C-0.40 C
197823.3 C-0.50 C
199025.3 C+1.50 C
199124.3 C+0.53 C
199224.4 C+0.61 C
199324.6 C+0.86 C
199424.4 C+0.68 C
199524.6 C+0.80 C
199724.3 C+0.56 C
199824.7 C+0.93 C
200024.0 C+0.23 C
200123.7 C-0.01 C
200224.1 C+0.36 C
200323.7 C-0.07 C
200523.7 C-0.07 C
200624.6 C+0.88 C
200824.5 C+0.72 C
200924.7 C+0.95 C
201024.4 C+0.68 C
201123.9 C+0.17 C

The annual mean temperature here has risen by 0.2 C (0.2 to 0.3) per decade over 1951 to 2011. In Fahrenheit: 0.4 F (0.3 to 0.6) per decade. The slope is a straight line fitted to 39 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at San Francisco
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.2 C (0.2 to 0.3) per decade0.4 F (0.3 to 0.6) per decade1951 to 201139Rise
Mean daily maximum0.2 C (0.1 to 0.3) per decade0.3 F (0.1 to 0.6) per decade1951 to 201139Rise
Mean daily minimum0.3 C (0.1 to 0.5) per decade0.5 F (0.2 to 0.8) per decade1951 to 201139Rise

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

1950 to 2013
Yearly extremes at San Francisco: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)43.3 C (109.9 F)199838.3 C (100.9 F)63
Coldest night (TNn)0.0 C (32.0 F)19586.1 C (43.0 F)63
Wettest day (Rx1day)194.8 mm (7.7 in)200665.8 mm (2.6 in)63
Wettest five days (Rx5day)361.5 mm (14.2 in)2005151.9 mm (6.0 in)63
Longest dry spell (CDD)161 days199380 days63

Hottest day (TXx)

Hottest day (TXx) at San Francisco by year The hottest day of the year at San Francisco, 1950 to 2013. The record is 43.3 C (109.9 F) in 1998, marked on the chart; the median year is 38.3 C (100.9 F). 30354045196019802000Record: 43.3 C (109.9 F) in 1998
The hottest day of the year at San Francisco, 1950 to 2013. The record is 43.3 C (109.9 F) in 1998, marked on the chart; the median year is 38.3 C (100.9 F).
Hottest day (TXx) at San Francisco by year
YearHottest day (TXx)
195038.3 C (100.9 F)
195138.9 C (102.0 F)
195237.8 C (100.0 F)
195338.3 C (100.9 F)
195440.0 C (104.0 F)
195538.9 C (102.0 F)
195636.7 C (98.1 F)
195738.3 C (100.9 F)
195838.9 C (102.0 F)
195938.3 C (100.9 F)
196038.3 C (100.9 F)
196138.9 C (102.0 F)
196234.4 C (93.9 F)
196337.2 C (99.0 F)
196441.1 C (106.0 F)
196542.8 C (109.0 F)
196638.9 C (102.0 F)
196742.2 C (108.0 F)
196841.7 C (107.1 F)
196940.6 C (105.1 F)
197038.9 C (102.0 F)
197138.3 C (100.9 F)
197237.8 C (100.0 F)
197339.4 C (102.9 F)
197437.8 C (100.0 F)
197540.0 C (104.0 F)
197636.7 C (98.1 F)
197738.9 C (102.0 F)
197838.9 C (102.0 F)
197937.8 C (100.0 F)
198038.9 C (102.0 F)
198137.8 C (100.0 F)
198236.7 C (98.1 F)
198335.0 C (95.0 F)
198432.2 C (90.0 F)
198536.1 C (97.0 F)
198635.0 C (95.0 F)
198738.3 C (100.9 F)
198837.8 C (100.0 F)
198938.3 C (100.9 F)
199035.6 C (96.1 F)
199135.0 C (95.0 F)
199238.9 C (102.0 F)
199340.6 C (105.1 F)
199437.8 C (100.0 F)
199537.8 C (100.0 F)
199737.8 C (100.0 F)
199843.3 C (109.9 F)
199939.4 C (102.9 F)
200038.3 C (100.9 F)
200136.7 C (98.1 F)
200239.4 C (102.9 F)
200338.9 C (102.0 F)
200440.0 C (104.0 F)
200537.8 C (100.0 F)
200639.4 C (102.9 F)
200739.4 C (102.9 F)
200838.9 C (102.0 F)
200937.8 C (100.0 F)
201039.4 C (102.9 F)
201137.2 C (99.0 F)
201239.4 C (102.9 F)
201337.8 C (100.0 F)

Coldest night (TNn)

Coldest night (TNn) at San Francisco by year The coldest night of the year at San Francisco, 1950 to 2013. The record is 0.0 C (32.0 F) in 1958, marked on the chart; the median year is 6.1 C (43.0 F). 051015196019802000Record: 0.0 C (32.0 F) in 1958
The coldest night of the year at San Francisco, 1950 to 2013. The record is 0.0 C (32.0 F) in 1958, marked on the chart; the median year is 6.1 C (43.0 F).
Coldest night (TNn) at San Francisco by year
YearColdest night (TNn)
19505.0 C (41.0 F)
19514.4 C (39.9 F)
19526.7 C (44.1 F)
19531.7 C (35.1 F)
19545.0 C (41.0 F)
19555.0 C (41.0 F)
19563.3 C (37.9 F)
19573.9 C (39.0 F)
19580.0 C (32.0 F)
19591.1 C (34.0 F)
19606.1 C (43.0 F)
19618.9 C (48.0 F)
19623.9 C (39.0 F)
19632.2 C (36.0 F)
19642.8 C (37.0 F)
19652.8 C (37.0 F)
19664.4 C (39.9 F)
19675.0 C (41.0 F)
19682.8 C (37.0 F)
19696.1 C (43.0 F)
19703.3 C (37.9 F)
19715.6 C (42.1 F)
19723.9 C (39.0 F)
19733.9 C (39.0 F)
19745.0 C (41.0 F)
19753.9 C (39.0 F)
19763.9 C (39.0 F)
19773.9 C (39.0 F)
19785.0 C (41.0 F)
19795.6 C (42.1 F)
19805.6 C (42.1 F)
19816.7 C (44.1 F)
198210.6 C (51.1 F)
19839.4 C (48.9 F)
19847.8 C (46.0 F)
19858.9 C (48.0 F)
19868.9 C (48.0 F)
19874.4 C (39.9 F)
19888.3 C (46.9 F)
19895.0 C (41.0 F)
199011.7 C (53.1 F)
199110.6 C (51.1 F)
199210.0 C (50.0 F)
19937.8 C (46.0 F)
199410.6 C (51.1 F)
199511.1 C (52.0 F)
19978.3 C (46.9 F)
19988.3 C (46.9 F)
19998.9 C (48.0 F)
200010.0 C (50.0 F)
20019.4 C (48.9 F)
20028.3 C (46.9 F)
20037.8 C (46.0 F)
200410.0 C (50.0 F)
20057.8 C (46.0 F)
20068.9 C (48.0 F)
200710.0 C (50.0 F)
20086.1 C (43.0 F)
20096.7 C (44.1 F)
20106.1 C (43.0 F)
20118.9 C (48.0 F)
20128.9 C (48.0 F)
20134.4 C (39.9 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at San Francisco by year The wettest day of the year at San Francisco, 1950 to 2013. The record is 194.8 mm (7.7 in) in 2006, marked on the chart; the median year is 65.8 mm (2.6 in). 050100150200196019802000Record: 194.8 mm (7.7 in) in 2006
The wettest day of the year at San Francisco, 1950 to 2013. The record is 194.8 mm (7.7 in) in 2006, marked on the chart; the median year is 65.8 mm (2.6 in).
Wettest day (Rx1day) at San Francisco by year
YearWettest day (Rx1day)
195051.3 mm (2.0 in)
195169.9 mm (2.8 in)
195248.3 mm (1.9 in)
195364.3 mm (2.5 in)
195462.2 mm (2.4 in)
195538.1 mm (1.5 in)
195634.5 mm (1.4 in)
195729.2 mm (1.1 in)
195849.5 mm (1.9 in)
195955.4 mm (2.2 in)
196054.1 mm (2.1 in)
196145.5 mm (1.8 in)
196238.6 mm (1.5 in)
196338.4 mm (1.5 in)
196448.8 mm (1.9 in)
196552.1 mm (2.1 in)
1966127.8 mm (5.0 in)
196769.9 mm (2.8 in)
196871.6 mm (2.8 in)
196990.4 mm (3.6 in)
197079.8 mm (3.1 in)
197159.9 mm (2.4 in)
197296.8 mm (3.8 in)
1973140.0 mm (5.5 in)
197458.4 mm (2.3 in)
1975129.8 mm (5.1 in)
197671.4 mm (2.8 in)
197759.9 mm (2.4 in)
197887.9 mm (3.5 in)
197999.8 mm (3.9 in)
198032.3 mm (1.3 in)
1981115.3 mm (4.5 in)
198252.6 mm (2.1 in)
198345.5 mm (1.8 in)
198442.9 mm (1.7 in)
198564.3 mm (2.5 in)
198665.8 mm (2.6 in)
198754.4 mm (2.1 in)
198884.6 mm (3.3 in)
198951.8 mm (2.0 in)
1990100.8 mm (4.0 in)
199173.9 mm (2.9 in)
199224.9 mm (1.0 in)
199310.7 mm (0.4 in)
199475.9 mm (3.0 in)
199541.9 mm (1.6 in)
1997107.4 mm (4.2 in)
1998162.8 mm (6.4 in)
1999125.5 mm (4.9 in)
200060.2 mm (2.4 in)
200168.8 mm (2.7 in)
200290.2 mm (3.6 in)
200390.2 mm (3.6 in)
200467.8 mm (2.7 in)
2005120.4 mm (4.7 in)
2006194.8 mm (7.7 in)
200760.5 mm (2.4 in)
2008100.1 mm (3.9 in)
200980.8 mm (3.2 in)
201095.3 mm (3.8 in)
2011138.2 mm (5.4 in)
201295.8 mm (3.8 in)
20139.1 mm (0.36 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at San Francisco by year The wettest five days of the year at San Francisco, 1950 to 2013. The record is 361.5 mm (14.2 in) in 2005, marked on the chart; the median year is 151.9 mm (6.0 in). 0100200300400196019802000Record: 361.5 mm (14.2 in) in 2005
The wettest five days of the year at San Francisco, 1950 to 2013. The record is 361.5 mm (14.2 in) in 2005, marked on the chart; the median year is 151.9 mm (6.0 in).
Wettest five days (Rx5day) at San Francisco by year
YearWettest five days (Rx5day)
1950123.7 mm (4.9 in)
1951152.9 mm (6.0 in)
1952115.6 mm (4.6 in)
1953163.8 mm (6.4 in)
1954165.6 mm (6.5 in)
195579.7 mm (3.1 in)
195659.7 mm (2.4 in)
195773.2 mm (2.9 in)
1958109.8 mm (4.3 in)
195980.0 mm (3.1 in)
1960122.4 mm (4.8 in)
1961127.1 mm (5.0 in)
1962113.2 mm (4.5 in)
1963104.8 mm (4.1 in)
1964118.1 mm (4.6 in)
1965155.0 mm (6.1 in)
1966172.1 mm (6.8 in)
1967135.8 mm (5.3 in)
1968153.2 mm (6.0 in)
1969176.3 mm (6.9 in)
1970145.1 mm (5.7 in)
1971129.4 mm (5.1 in)
1972173.6 mm (6.8 in)
1973233.0 mm (9.2 in)
1974105.2 mm (4.1 in)
1975189.3 mm (7.5 in)
1976126.6 mm (5.0 in)
1977128.5 mm (5.1 in)
1978217.2 mm (8.6 in)
1979183.0 mm (7.2 in)
1980130.5 mm (5.1 in)
1981188.3 mm (7.4 in)
1982135.6 mm (5.3 in)
1983119.1 mm (4.7 in)
198450.1 mm (2.0 in)
1985125.8 mm (5.0 in)
1986151.9 mm (6.0 in)
1987150.8 mm (5.9 in)
1988185.0 mm (7.3 in)
1989181.2 mm (7.1 in)
1990159.5 mm (6.3 in)
1991156.1 mm (6.1 in)
199245.0 mm (1.8 in)
199321.2 mm (0.8 in)
199492.5 mm (3.6 in)
1995106.4 mm (4.2 in)
1997204.5 mm (8.1 in)
1998282.8 mm (11.1 in)
1999270.7 mm (10.7 in)
2000157.3 mm (6.2 in)
2001117.1 mm (4.6 in)
2002251.6 mm (9.9 in)
2003211.1 mm (8.3 in)
2004165.4 mm (6.5 in)
2005361.5 mm (14.2 in)
2006351.8 mm (13.9 in)
2007150.2 mm (5.9 in)
2008170.8 mm (6.7 in)
2009224.9 mm (8.9 in)
2010200.6 mm (7.9 in)
2011226.0 mm (8.9 in)
2012166.7 mm (6.6 in)
20139.1 mm (0.36 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at San Francisco by year The longest dry spell of the year at San Francisco, 1950 to 2013. The record is 161 days in 1993, marked on the chart; the median year is 80 days. 050100150200196019802000Record: 161 days in 1993
The longest dry spell of the year at San Francisco, 1950 to 2013. The record is 161 days in 1993, marked on the chart; the median year is 80 days.
Longest dry spell (CDD) at San Francisco by year
YearLongest dry spell (CDD)
195050 days
195177 days
195288 days
195394 days
195484 days
195590 days
195646 days
195755 days
1958111 days
195958 days
196062 days
196159 days
196298 days
196359 days
196498 days
196571 days
196690 days
196752 days
196863 days
196995 days
197080 days
197174 days
197272 days
197395 days
197441 days
197562 days
197637 days
197779 days
1978104 days
197989 days
198094 days
198131 days
198249 days
198359 days
19848 days
198537 days
198649 days
198732 days
198825 days
198988 days
199083 days
1991124 days
199289 days
1993161 days
199492 days
1995113 days
199789 days
1998110 days
199995 days
2000119 days
2001102 days
200230 days
200370 days
200488 days
2005110 days
2006106 days
200781 days
200870 days
200998 days
2010100 days
201154 days
201243 days
201341 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

50 years, 1951 to 2012

A day with at least 71.9 mm (2.8 in) of rain is expected about once in 2 years. A day with at least 194.9 mm (7.7 in) of rain is expected about once in 100 years.

Rainfall return levels at San Francisco: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years71.9 mm (2.8 in)
5 years105.2 mm (4.1 in)
10 years127.1 mm (5.0 in)
25 years154.6 mm (6.1 in)
50 years174.9 mm (6.9 in)
100 years194.9 mm (7.7 in)Longer than the 50 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, 50 years of values from 1951 to 2012.

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: 194.8 mm (7.7 in) in 2006; 162.8 mm (6.4 in) in 1998; 140.0 mm (5.5 in) in 1973.

Download the Data

  • Data for San Francisco standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for San Francisco 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 (2025-12-31).