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San Dieguito Weather Records (MXN00024064)

Record envelope, standing records and threshold days for San Dieguito (MXN00024064), Mexico, with 50 years of record.

Key Facts for San Dieguito

  • San Dieguito (MXN00024064) is a weather station in Mexico at 22.00 latitude and -99.20 longitude, 346 m (1,135 ft) above sea level.
  • The station reports from 1961 to 2010, 50 years of record.
  • 1,464 records set at San Dieguito still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • San Dieguito tied a daily record high maximum temperature of 30.6 C (87.1 F) on 15 November 2010.

About the Station

  • Location: Mexico, 22.00 latitude, -99.20 longitude.
  • Elevation: 346 m (1,135 ft).
  • Period of record: 1961 to 2010, 50 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 Dieguito, with 2026 drawn through them The band shows the record high and record low for each calendar day at San Dieguito. The lines show the 2026 daily maximum and minimum. 0 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 San Dieguito. 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 Dieguito, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan37.8 C (100.0 F)-2.2 C (28.0 F)n/an/a
Feb41.1 C (106.0 F)0.6 C (33.1 F)n/an/a
Mar45.6 C (114.1 F)1.7 C (35.1 F)n/an/a
Apr46.7 C (116.1 F)3.9 C (39.0 F)n/an/a
May47.8 C (118.0 F)8.9 C (48.0 F)n/an/a
Jun43.9 C (111.0 F)13.9 C (57.0 F)n/an/a
Jul40.0 C (104.0 F)13.9 C (57.0 F)n/an/a
Aug39.4 C (102.9 F)15.0 C (59.0 F)n/an/a
Sep38.9 C (102.0 F)6.7 C (44.1 F)n/an/a
Oct37.8 C (100.0 F)2.8 C (37.0 F)n/an/a
Nov37.8 C (100.0 F)0.6 C (33.1 F)n/an/a
Dec35.0 C (95.0 F)-4.4 C (24.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at San Dieguito by the year they were set 1,464 records at San Dieguito still stand. 1961 holds the most, with 86. 02550751001961: 861962: 541963: 301964: 531965: 241966: 261967: 461968: 521969: 301970: 671971: 351972: 291973: 391974: 391975: 291976: 461977: 251978: 231979: 391980: 651981: 301982: 231983: 291984: 331985: 151986: 151987: 261988: 361989: 371990: 221991: 321992: 341993: 201994: 261995: 201996: 161998: 321999: 152000: 102001: 142002: 122003: 112004: 132005: 142006: 162007: 142008: 242009: 172010: 211961196619711976198119861991199620022007
1,464 records at San Dieguito still stand. 1961 holds the most, with 86.
Standing records at San Dieguito by the year they were set
Year setStanding records
196186
196254
196330
196453
196524
196626
196746
196852
196930
197067
197135
197229
197339
197439
197529
197646
197725
197823
197939
198065
198130
198223
198329
198433
198515
198615
198726
198836
198937
199022
199132
199234
199320
199426
199520
199616
199832
199915
200010
200114
200212
200311
200413
200514
200616
200714
200824
200917
201021

All-Time Record Progression

1 new records
When San Dieguito set new all-time records 1 all-time records were set at San Dieguito between 8 July 2008 and 8 July 2008. Each dot is a new record. Record daily precipitation8 July 2008: Record daily precipitation 289.8 mm (11.4 in)
1 all-time records were set at San Dieguito between 8 July 2008 and 8 July 2008. Each dot is a new record.
When San Dieguito set new all-time records
DateKindDetail
2008-07-08Record daily precipitationRecord daily precipitation 289.8 mm (11.4 in)

Wettest Day of Each Month

Jul: 289.8 mm (11.4 in)
Record daily precipitation for each month at San Dieguito The wettest day on record for each calendar month at San Dieguito. The most was 289.8 mm (11.4 in) on 8 July 2008. 0100200300 Jan: 30.0 mm (1.2 in), 13 January 1966 Jan Feb: 42.9 mm (1.7 in), 10 February 2008 Feb Mar: 63.0 mm (2.5 in), 29 March 1988 Mar Apr: 102.4 mm (4.0 in), 14 April 1965 Apr May: 122.9 mm (4.8 in), 24 May 1971 May Jun: 169.9 mm (6.7 in), 28 June 1962 Jun Jul: 289.8 mm (11.4 in), 8 July 2008 Jul Aug: 271.3 mm (10.7 in), 23 August 1967 Aug Sep: 225.8 mm (8.9 in), 2 September 2007 Sep Oct: 127.0 mm (5.0 in), 10 October 1966 Oct Nov: 95.8 mm (3.8 in), 15 November 1964 Nov Dec: 95.8 mm (3.8 in), 2 December 1961 Dec
The wettest day on record for each calendar month at San Dieguito. The most was 289.8 mm (11.4 in) on 8 July 2008.
Record daily precipitation for each month at San Dieguito
MonthRecord daily precipitation (mm)Date
Jan30.0 mm (1.2 in)13 January 1966
Feb42.9 mm (1.7 in)10 February 2008
Mar63.0 mm (2.5 in)29 March 1988
Apr102.4 mm (4.0 in)14 April 1965
May122.9 mm (4.8 in)24 May 1971
Jun169.9 mm (6.7 in)28 June 1962
Jul289.8 mm (11.4 in)8 July 2008
Aug271.3 mm (10.7 in)23 August 1967
Sep225.8 mm (8.9 in)2 September 2007
Oct127.0 mm (5.0 in)10 October 1966
Nov95.8 mm (3.8 in)15 November 1964
Dec95.8 mm (3.8 in)2 December 1961

Period of Record Coverage

1961 to 2010
Days with data per year at San Dieguito 49 years of record at San Dieguito, 1961 to 2010. 3 years have data for under 90 percent of days and are left out of rankings: 1963, 1969, 1996. 1961: 363 of 365 days1962: 332 of 365 days1963: 272 of 365 days1964: 341 of 366 days1965: 359 of 365 days1966: 363 of 365 days1967: 329 of 365 days1968: 331 of 366 days1969: 326 of 365 days1970: 361 of 365 days1971: 362 of 365 days1972: 364 of 366 days1973: 361 of 365 days1974: 363 of 365 days1975: 363 of 365 days1976: 366 of 366 days1977: 363 of 365 days1978: 361 of 365 days1979: 365 of 365 days1980: 361 of 366 days1981: 363 of 365 days1982: 362 of 365 days1983: 363 of 365 days1984: 333 of 366 days1985: 336 of 365 days1986: 364 of 365 days1987: 364 of 365 days1988: 365 of 366 days1989: 360 of 365 days1990: 363 of 365 days1991: 363 of 365 days1992: 365 of 366 days1993: 362 of 365 days1994: 362 of 365 days1995: 332 of 365 days1996: 272 of 366 days1998: 363 of 365 days1999: 360 of 365 days2000: 364 of 366 days2001: 364 of 365 days2002: 365 of 365 days2003: 364 of 365 days2004: 364 of 366 days2005: 365 of 365 days2006: 364 of 365 days2007: 365 of 365 days2008: 365 of 366 days2009: 365 of 365 days2010: 334 of 365 days19701980199020002010
49 years of record at San Dieguito, 1961 to 2010. 3 years have data for under 90 percent of days and are left out of rankings: 1963, 1969, 1996.
Days with data per year at San Dieguito
YearDays with dataShare of yearComplete
196136399%Yes
196233291%Yes
196327275%No
196434193%Yes
196535998%Yes
196636399%Yes
196732990%Yes
196833190%Yes
196932689%No
197036199%Yes
197136299%Yes
197236499%Yes
197336199%Yes
197436399%Yes
197536399%Yes
1976366100%Yes
197736399%Yes
197836199%Yes
1979365100%Yes
198036199%Yes
198136399%Yes
198236299%Yes
198336399%Yes
198433391%Yes
198533692%Yes
1986364100%Yes
1987364100%Yes
1988365100%Yes
198936099%Yes
199036399%Yes
199136399%Yes
1992365100%Yes
199336299%Yes
199436299%Yes
199533291%Yes
199627274%No
199836399%Yes
199936099%Yes
200036499%Yes
2001364100%Yes
2002365100%Yes
2003364100%Yes
200436499%Yes
2005365100%Yes
2006364100%Yes
2007365100%Yes
2008365100%Yes
2009365100%Yes
201033492%Yes

Latest Records

20
Latest records at San Dieguito
DateStationRecordValueBeat old record byOld record stoodSignificance
15 November 2010San Dieguito, MXdaily high max (Tie)30.6 C (87.1 F)tie41 years4 of 100 (Routine)
8 November 2010San Dieguito, MXdaily low min7.8 C (46.0 F)2.2 C (4.0 F)48 years25 of 100 (Routine)
7 November 2010San Dieguito, MXdaily low min6.7 C (44.1 F)2.2 C (4.0 F)40 years23 of 100 (Routine)
6 November 2010San Dieguito, MXdaily low max17.8 C (64.0 F)2.2 C (4.0 F)17 years16 of 100 (Routine)
6 November 2010San Dieguito, MXdaily low min5.6 C (42.1 F)1.1 C (2.0 F)28 years16 of 100 (Routine)
4 November 2010San Dieguito, MXdaily low min (Tie)8.9 C (48.0 F)tie11 years2 of 100 (Routine)
25 September 2010San Dieguito, MXdaily high min (Tie)22.8 C (73.0 F)tie9 years1 of 100 (Routine)
19 September 2010San Dieguito, MXdaily high min (Tie)22.8 C (73.0 F)tie44 years4 of 100 (Routine)
18 September 2010San Dieguito, MXdaily rain43.9 mm (1.7 in)8.1 mm (0.32 in)40 years20 of 100 (Routine)
17 September 2010San Dieguito, MXdaily high min (Tie)22.8 C (73.0 F)tie37 years4 of 100 (Routine)
12 September 2010San Dieguito, MXdaily high min (Tie)22.8 C (73.0 F)tie48 years4 of 100 (Routine)
11 September 2010San Dieguito, MXmonthly high min (Tie)23.9 C (75.0 F)tie42 years6 of 100 (Routine)
9 September 2010San Dieguito, MXmonthly high min (Tie)23.9 C (75.0 F)tie42 years6 of 100 (Routine)
7 September 2010San Dieguito, MXmonthly high max (Tie)38.9 C (102.0 F)tie2 years3 of 100 (Routine)
6 September 2010San Dieguito, MXdaily high min (Tie)22.8 C (73.0 F)tie40 years4 of 100 (Routine)
3 September 2010San Dieguito, MXdaily high min (Tie)22.8 C (73.0 F)tie40 years4 of 100 (Routine)
2 September 2010San Dieguito, MXdaily high min22.8 C (73.0 F)0.6 C (1.1 F)48 years22 of 100 (Routine)
19 August 2010San Dieguito, MXdaily high min (Tie)22.8 C (73.0 F)tie45 years4 of 100 (Routine)
18 August 2010San Dieguito, MXdaily high min (Tie)22.8 C (73.0 F)tie43 years4 of 100 (Routine)
15 August 2010San Dieguito, MXdaily high min23.9 C (75.0 F)1.1 C (2.0 F)45 years27 of 100 (Routine)

Climate Trend

38 complete years, 1961 to 2009
Annual mean temperature at San Dieguito as warming stripes, 1961 to 2009 One stripe for each of 38 complete years at San Dieguito, 1961 to 2009. Blue stripes are years cooler than the station's own mean of 22.7 C (72.8 F); red stripes are warmer. The coolest year was 1976, at 21.3 C (70.3 F), and the warmest was 1998, at 24.0 C (75.3 F). The strongest colour marks a difference of 1.5 C (2.7 F). 1961: 22.4 C, -0.2 C from the station mean1965: 22.1 C, -0.5 C from the station mean1966: 21.7 C, -1.0 C from the station mean1970: 22.6 C, 0.0 C from the station mean1971: 23.6 C, +0.9 C from the station mean1972: 23.3 C, +0.6 C from the station mean1973: 23.3 C, +0.7 C from the station mean1974: 22.5 C, -0.2 C from the station mean1975: 22.4 C, -0.2 C from the station mean1976: 21.3 C, -1.4 C from the station mean1977: 22.6 C, 0.0 C from the station mean1978: 22.5 C, -0.1 C from the station mean1979: 22.2 C, -0.4 C from the station mean1980: 23.4 C, +0.7 C from the station mean1981: 22.5 C, -0.1 C from the station mean1982: 23.0 C, +0.3 C from the station mean1983: 22.9 C, +0.2 C from the station mean1986: 22.5 C, -0.2 C from the station mean1987: 21.8 C, -0.9 C from the station mean1988: 22.3 C, -0.3 C from the station mean1989: 22.5 C, -0.2 C from the station mean1990: 22.5 C, -0.2 C from the station mean1991: 22.7 C, 0.0 C from the station mean1992: 21.5 C, -1.1 C from the station mean1993: 22.5 C, -0.1 C from the station mean1994: 23.0 C, +0.4 C from the station mean1998: 24.0 C, +1.4 C from the station mean1999: 23.0 C, +0.4 C from the station mean2000: 23.2 C, +0.5 C from the station mean2001: 22.6 C, 0.0 C from the station mean2002: 22.5 C, -0.2 C from the station mean2003: 23.0 C, +0.3 C from the station mean2004: 22.5 C, -0.2 C from the station mean2005: 23.0 C, +0.3 C from the station mean2006: 23.4 C, +0.8 C from the station mean2007: 22.2 C, -0.4 C from the station mean2008: 22.6 C, 0.0 C from the station mean2009: 23.3 C, +0.6 C from the station mean1961196519701975198019851990199520002005
One stripe for each of 38 complete years at San Dieguito, 1961 to 2009. Blue stripes are years cooler than the station's own mean of 22.7 C (72.8 F); red stripes are warmer. The coolest year was 1976, at 21.3 C (70.3 F), and the warmest was 1998, at 24.0 C (75.3 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at San Dieguito as warming stripes, 1961 to 2009
YearAnnual mean temperatureDifference from the station mean
196122.4 C-0.22 C
196522.1 C-0.52 C
196621.7 C-0.95 C
197022.6 C-0.04 C
197123.6 C+0.91 C
197223.3 C+0.62 C
197323.3 C+0.67 C
197422.5 C-0.20 C
197522.4 C-0.22 C
197621.3 C-1.40 C
197722.6 C-0.02 C
197822.5 C-0.11 C
197922.2 C-0.41 C
198023.4 C+0.71 C
198122.5 C-0.11 C
198223.0 C+0.33 C
198322.9 C+0.21 C
198622.5 C-0.19 C
198721.8 C-0.85 C
198822.3 C-0.32 C
198922.5 C-0.17 C
199022.5 C-0.20 C
199122.7 C0.00 C
199221.5 C-1.12 C
199322.5 C-0.12 C
199423.0 C+0.39 C
199824.0 C+1.39 C
199923.0 C+0.36 C
200023.2 C+0.50 C
200122.6 C-0.03 C
200222.5 C-0.19 C
200323.0 C+0.31 C
200422.5 C-0.20 C
200523.0 C+0.30 C
200623.4 C+0.76 C
200722.2 C-0.42 C
200822.6 C-0.04 C
200923.3 C+0.62 C

The fitted trend in annual mean temperature here over 1961 to 2009 is 0.10 C (-0.04 to 0.23) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.2 F (-0.1 to 0.4) per decade. The slope is a straight line fitted to 38 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at San Dieguito
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.10 C (-0.04 to 0.23) per decade0.2 F (-0.1 to 0.4) per decade1961 to 200938Not clearly different from zero
Mean daily maximum0.2 C (-0.1 to 0.4) per decade0.3 F (-0.1 to 0.6) per decade1961 to 200938Not clearly different from zero
Mean daily minimum0.04 C (-0.08 to 0.17) per decade0.1 F (-0.1 to 0.3) per decade1961 to 200938Not clearly different from zero

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

1961 to 2010
Yearly extremes at San Dieguito: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)47.8 C (118.0 F)197341.7 C (107.1 F)49
Coldest night (TNn)-4.4 C (24.1 F)19892.8 C (37.0 F)49
Wettest day (Rx1day)289.8 mm (11.4 in)2008113.8 mm (4.5 in)49
Wettest five days (Rx5day)691.7 mm (27.2 in)1962214.2 mm (8.4 in)49
Longest dry spell (CDD)102 days196140 days49

Hottest day (TXx)

Hottest day (TXx) at San Dieguito by year The hottest day of the year at San Dieguito, 1961 to 2010. The record is 47.8 C (118.0 F) in 1973, marked on the chart; the median year is 41.7 C (107.1 F). 3540455019701980199020002010Record: 47.8 C (118.0 F) in 1973
The hottest day of the year at San Dieguito, 1961 to 2010. The record is 47.8 C (118.0 F) in 1973, marked on the chart; the median year is 41.7 C (107.1 F).
Hottest day (TXx) at San Dieguito by year
YearHottest day (TXx)
196140.6 C (105.1 F)
196242.8 C (109.0 F)
196340.6 C (105.1 F)
196446.7 C (116.1 F)
196542.8 C (109.0 F)
196637.8 C (100.0 F)
196738.9 C (102.0 F)
196837.8 C (100.0 F)
196940.0 C (104.0 F)
197038.9 C (102.0 F)
197145.6 C (114.1 F)
197241.7 C (107.1 F)
197347.8 C (118.0 F)
197443.9 C (111.0 F)
197545.0 C (113.0 F)
197636.7 C (98.1 F)
197741.7 C (107.1 F)
197845.6 C (114.1 F)
197943.9 C (111.0 F)
198041.7 C (107.1 F)
198141.7 C (107.1 F)
198240.6 C (105.1 F)
198343.9 C (111.0 F)
198446.7 C (116.1 F)
198540.0 C (104.0 F)
198640.6 C (105.1 F)
198741.7 C (107.1 F)
198841.7 C (107.1 F)
198940.6 C (105.1 F)
199038.9 C (102.0 F)
199145.6 C (114.1 F)
199238.9 C (102.0 F)
199340.0 C (104.0 F)
199440.0 C (104.0 F)
199543.9 C (111.0 F)
199641.7 C (107.1 F)
199845.6 C (114.1 F)
199945.6 C (114.1 F)
200045.6 C (114.1 F)
200140.0 C (104.0 F)
200240.0 C (104.0 F)
200342.8 C (109.0 F)
200441.7 C (107.1 F)
200543.9 C (111.0 F)
200642.8 C (109.0 F)
200738.9 C (102.0 F)
200845.0 C (113.0 F)
200945.6 C (114.1 F)
201043.9 C (111.0 F)

Coldest night (TNn)

Coldest night (TNn) at San Dieguito by year The coldest night of the year at San Dieguito, 1961 to 2010. The record is -4.4 C (24.1 F) in 1989, marked on the chart; the median year is 2.8 C (37.0 F). -5051019701980199020002010Record: -4.4 C (24.1 F) in 1989
The coldest night of the year at San Dieguito, 1961 to 2010. The record is -4.4 C (24.1 F) in 1989, marked on the chart; the median year is 2.8 C (37.0 F).
Coldest night (TNn) at San Dieguito by year
YearColdest night (TNn)
19612.2 C (36.0 F)
19626.7 C (44.1 F)
19630.6 C (33.1 F)
19642.2 C (36.0 F)
19651.7 C (35.1 F)
19662.8 C (37.0 F)
19671.1 C (34.0 F)
19681.7 C (35.1 F)
19693.9 C (39.0 F)
19703.9 C (39.0 F)
19712.2 C (36.0 F)
19723.9 C (39.0 F)
19730.0 C (32.0 F)
19741.7 C (35.1 F)
1975-2.2 C (28.0 F)
19760.6 C (33.1 F)
19770.6 C (33.1 F)
19780.6 C (33.1 F)
19790.6 C (33.1 F)
19803.9 C (39.0 F)
19813.9 C (39.0 F)
19822.8 C (37.0 F)
1983-2.2 C (28.0 F)
19845.0 C (41.0 F)
19851.7 C (35.1 F)
19861.7 C (35.1 F)
19872.8 C (37.0 F)
19880.6 C (33.1 F)
1989-4.4 C (24.1 F)
19902.8 C (37.0 F)
19915.6 C (42.1 F)
19923.9 C (39.0 F)
19932.8 C (37.0 F)
19942.8 C (37.0 F)
19956.7 C (44.1 F)
19962.8 C (37.0 F)
19980.6 C (33.1 F)
19991.7 C (35.1 F)
20001.7 C (35.1 F)
20015.0 C (41.0 F)
20023.9 C (39.0 F)
20030.6 C (33.1 F)
20040.0 C (32.0 F)
20055.6 C (42.1 F)
20063.9 C (39.0 F)
20073.9 C (39.0 F)
20085.0 C (41.0 F)
20095.0 C (41.0 F)
20103.9 C (39.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at San Dieguito by year The wettest day of the year at San Dieguito, 1961 to 2010. The record is 289.8 mm (11.4 in) in 2008, marked on the chart; the median year is 113.8 mm (4.5 in). 010020030019701980199020002010Record: 289.8 mm (11.4 in) in 2008
The wettest day of the year at San Dieguito, 1961 to 2010. The record is 289.8 mm (11.4 in) in 2008, marked on the chart; the median year is 113.8 mm (4.5 in).
Wettest day (Rx1day) at San Dieguito by year
YearWettest day (Rx1day)
1961169.9 mm (6.7 in)
1962169.9 mm (6.7 in)
1963199.9 mm (7.9 in)
196496.8 mm (3.8 in)
1965102.4 mm (4.0 in)
1966127.0 mm (5.0 in)
1967271.3 mm (10.7 in)
1968125.0 mm (4.9 in)
1969143.8 mm (5.7 in)
1970119.9 mm (4.7 in)
1971122.9 mm (4.8 in)
1972113.8 mm (4.5 in)
1973114.8 mm (4.5 in)
1974158.0 mm (6.2 in)
1975167.9 mm (6.6 in)
1976162.8 mm (6.4 in)
1977121.9 mm (4.8 in)
197884.8 mm (3.3 in)
197978.0 mm (3.1 in)
198091.9 mm (3.6 in)
1981103.9 mm (4.1 in)
1982147.8 mm (5.8 in)
1983113.8 mm (4.5 in)
1984113.8 mm (4.5 in)
1985177.8 mm (7.0 in)
1986159.8 mm (6.3 in)
1987113.8 mm (4.5 in)
1988117.9 mm (4.6 in)
198967.8 mm (2.7 in)
199042.9 mm (1.7 in)
199188.9 mm (3.5 in)
199286.9 mm (3.4 in)
199395.8 mm (3.8 in)
199494.0 mm (3.7 in)
1995103.9 mm (4.1 in)
199695.8 mm (3.8 in)
199849.8 mm (2.0 in)
199971.9 mm (2.8 in)
2000154.9 mm (6.1 in)
2001106.9 mm (4.2 in)
200295.0 mm (3.7 in)
2003105.9 mm (4.2 in)
2004125.0 mm (4.9 in)
200589.9 mm (3.5 in)
200681.8 mm (3.2 in)
2007225.8 mm (8.9 in)
2008289.8 mm (11.4 in)
200983.8 mm (3.3 in)
201094.0 mm (3.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at San Dieguito by year The wettest five days of the year at San Dieguito, 1961 to 2010. The record is 691.7 mm (27.2 in) in 1962, marked on the chart; the median year is 214.2 mm (8.4 in). 020040060080019701980199020002010Record: 691.7 mm (27.2 in) in 1962
The wettest five days of the year at San Dieguito, 1961 to 2010. The record is 691.7 mm (27.2 in) in 1962, marked on the chart; the median year is 214.2 mm (8.4 in).
Wettest five days (Rx5day) at San Dieguito by year
YearWettest five days (Rx5day)
1961323.6 mm (12.7 in)
1962691.7 mm (27.2 in)
1963331.5 mm (13.1 in)
1964186.0 mm (7.3 in)
1965191.5 mm (7.5 in)
1966242.9 mm (9.6 in)
1967409.3 mm (16.1 in)
1968159.5 mm (6.3 in)
1969245.2 mm (9.7 in)
1970259.6 mm (10.2 in)
1971184.5 mm (7.3 in)
1972246.3 mm (9.7 in)
1973307.3 mm (12.1 in)
1974445.5 mm (17.5 in)
1975300.3 mm (11.8 in)
1976416.4 mm (16.4 in)
1977177.2 mm (7.0 in)
1978225.6 mm (8.9 in)
1979159.0 mm (6.3 in)
1980156.2 mm (6.1 in)
1981214.2 mm (8.4 in)
1982185.4 mm (7.3 in)
1983321.5 mm (12.7 in)
1984252.6 mm (9.9 in)
1985228.6 mm (9.0 in)
1986225.5 mm (8.9 in)
1987201.6 mm (7.9 in)
1988357.4 mm (14.1 in)
1989169.2 mm (6.7 in)
199074.7 mm (2.9 in)
1991200.4 mm (7.9 in)
1992202.1 mm (8.0 in)
1993221.8 mm (8.7 in)
1994130.6 mm (5.1 in)
1995292.3 mm (11.5 in)
1996218.2 mm (8.6 in)
199876.4 mm (3.0 in)
1999170.3 mm (6.7 in)
2000307.6 mm (12.1 in)
2001134.4 mm (5.3 in)
2002208.3 mm (8.2 in)
2003184.4 mm (7.3 in)
2004152.7 mm (6.0 in)
2005162.5 mm (6.4 in)
2006129.6 mm (5.1 in)
2007389.4 mm (15.3 in)
2008570.1 mm (22.4 in)
2009194.5 mm (7.7 in)
2010192.8 mm (7.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at San Dieguito by year The longest dry spell of the year at San Dieguito, 1961 to 2010. The record is 102 days in 1961, marked on the chart; the median year is 40 days. 025507510012519701980199020002010Record: 102 days in 1961
The longest dry spell of the year at San Dieguito, 1961 to 2010. The record is 102 days in 1961, marked on the chart; the median year is 40 days.
Longest dry spell (CDD) at San Dieguito by year
YearLongest dry spell (CDD)
1961102 days
196240 days
196351 days
196444 days
196520 days
196622 days
196742 days
196822 days
196926 days
197026 days
197153 days
197224 days
197336 days
197423 days
197543 days
197627 days
197768 days
197830 days
197939 days
198068 days
198133 days
198236 days
198334 days
198483 days
198531 days
198633 days
198744 days
198853 days
198946 days
199095 days
199132 days
199240 days
199327 days
199442 days
199558 days
199690 days
199844 days
199944 days
200051 days
200159 days
200255 days
200370 days
200428 days
200545 days
200662 days
200725 days
200828 days
200938 days
201029 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

48 years, 1961 to 2010

A day with at least 110.5 mm (4.4 in) of rain is expected about once in 2 years. A day with at least 299.5 mm (11.8 in) of rain is expected about once in 100 years.

Rainfall return levels at San Dieguito: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years110.5 mm (4.4 in)
5 years150.9 mm (5.9 in)
10 years181.4 mm (7.1 in)
25 years224.5 mm (8.8 in)
50 years260.4 mm (10.3 in)Longer than the 48 years of record
100 years299.5 mm (11.8 in)Longer than the 48 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, 48 years of values from 1961 to 2010.

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: 289.8 mm (11.4 in) in 2008; 271.3 mm (10.7 in) in 1967; 225.8 mm (8.9 in) in 2007.

Download the Data

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