Daily records
Page built 2026-10-16
Data as of 2026-10-14
Search
Built 2026-10-16 (16 October 2026)

El Cajon Weather Records (USC00042706)

Record envelope, standing records and threshold days for El Cajon (USC00042706), California, United States, with 48 years of record.

Key Facts for El Cajon

  • El Cajon (USC00042706) is a weather station in California, United States at 32.80 latitude and -116.93 longitude, 151 m (495 ft) above sea level.
  • The station reports from 1979 to 2026, 48 years of record.
  • 1,464 records set at El Cajon still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • El Cajon set a daily record high minimum temperature of 20.6 C (69.1 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, 32.80 latitude, -116.93 longitude.
  • Elevation: 151 m (495 ft).
  • Period of record: 1979 to 2026, 48 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

16 days at or beyond a record
Daily record high and record low at El Cajon, with 2026 drawn through them The band shows the record high and record low for each calendar day at El Cajon. The lines show the 2026 daily maximum and minimum. 16 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 El Cajon. The lines show the 2026 daily maximum and minimum. 16 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at El Cajon, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan33.9 C (93.0 F)-3.3 C (26.1 F)31.1 C (88.0 F)0.6 C (33.1 F)
Feb35.0 C (95.0 F)-2.2 C (28.0 F)34.4 C (93.9 F)3.3 C (37.9 F)
Mar38.3 C (100.9 F)-1.1 C (30.0 F)38.3 C (100.9 F)5.0 C (41.0 F)
Apr40.0 C (104.0 F)2.2 C (36.0 F)31.7 C (89.1 F)7.8 C (46.0 F)
May40.0 C (104.0 F)6.1 C (43.0 F)29.4 C (84.9 F)10.0 C (50.0 F)
Jun41.7 C (107.1 F)7.8 C (46.0 F)34.4 C (93.9 F)12.8 C (55.0 F)
Jul45.0 C (113.0 F)10.0 C (50.0 F)35.0 C (95.0 F)16.1 C (61.0 F)
Aug41.7 C (107.1 F)10.0 C (50.0 F)38.3 C (100.9 F)18.3 C (64.9 F)
Sep45.6 C (114.1 F)9.4 C (48.9 F)n/an/a
Oct41.1 C (106.0 F)1.7 C (35.1 F)40.0 C (104.0 F)20.6 C (69.1 F)
Nov37.2 C (99.0 F)-1.7 C (28.9 F)n/an/a
Dec33.9 C (93.0 F)-3.9 C (25.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at El Cajon by the year they were set 1,464 records at El Cajon still stand. 1987 holds the most, with 54. 02040601979: 81980: 531981: 231982: 421983: 471984: 321985: 501986: 291987: 541988: 431989: 401990: 391991: 331992: 261993: 231994: 201995: 321996: 261997: 321998: 71999: 442000: 282001: 312002: 322003: 232004: 212005: 112006: 212007: 72008: 412009: 212010: 502011: 392012: 262013: 522014: 372015: 372016: 342017: 292018: 342019: 212020: 342021: 242022: 192023: 292024: 182025: 212026: 211979198419891994199920042009201420192024
1,464 records at El Cajon still stand. 1987 holds the most, with 54.
Standing records at El Cajon by the year they were set
Year setStanding records
19798
198053
198123
198242
198347
198432
198550
198629
198754
198843
198940
199039
199133
199226
199323
199420
199532
199626
199732
19987
199944
200028
200131
200232
200323
200421
200511
200621
20077
200841
200921
201050
201139
201226
201352
201437
201537
201634
201729
201834
201921
202034
202124
202219
202329
202418
202521
202621

All-Time Record Progression

3 new records
When El Cajon set new all-time records 3 all-time records were set at El Cajon between 3 September 2017 and 4 September 2022. Each dot is a new record. Record high minimum temperatureRecord high maximum temperature3 September 2017: Record high minimum temperature 26.7 C (80.1 F)5 September 2020: Record high maximum temperature 45.6 C (114.1 F)4 September 2022: Record high minimum temperature 27.2 C (81.0 F)2020
3 all-time records were set at El Cajon between 3 September 2017 and 4 September 2022. Each dot is a new record.
When El Cajon set new all-time records
DateKindDetail
2017-09-03Record high minimum temperatureRecord high minimum temperature 26.7 C (80.1 F)
2020-09-05Record high maximum temperatureRecord high maximum temperature 45.6 C (114.1 F)
2022-09-04Record high minimum temperatureRecord high minimum temperature 27.2 C (81.0 F)

Wettest Day of Each Month

Dec: 96.5 mm (3.8 in)
Record daily precipitation for each month at El Cajon The wettest day on record for each calendar month at El Cajon. The most was 96.5 mm (3.8 in) on 22 December 2010. 0255075100 Jan: 69.9 mm (2.8 in), 22 January 2024 Jan Feb: 64.0 mm (2.5 in), 21 February 1980 Feb Mar: 53.6 mm (2.1 in), 5 March 1995 Mar Apr: 47.8 mm (1.9 in), 10 April 2020 Apr May: 22.9 mm (0.9 in), 7 May 2017 May Jun: 11.9 mm (0.5 in), 10 June 1990 Jun Jul: 48.3 mm (1.9 in), 31 July 2006 Jul Aug: 30.5 mm (1.2 in), 20 August 2023 Aug Sep: 19.1 mm (0.8 in), 25 September 1986 Sep Oct: 48.3 mm (1.9 in), 10 October 1986 Oct Nov: 61.0 mm (2.4 in), 25 November 1985 Nov Dec: 96.5 mm (3.8 in), 22 December 2010 Dec
The wettest day on record for each calendar month at El Cajon. The most was 96.5 mm (3.8 in) on 22 December 2010.
Record daily precipitation for each month at El Cajon
MonthRecord daily precipitation (mm)Date
Jan69.9 mm (2.8 in)22 January 2024
Feb64.0 mm (2.5 in)21 February 1980
Mar53.6 mm (2.1 in)5 March 1995
Apr47.8 mm (1.9 in)10 April 2020
May22.9 mm (0.9 in)7 May 2017
Jun11.9 mm (0.5 in)10 June 1990
Jul48.3 mm (1.9 in)31 July 2006
Aug30.5 mm (1.2 in)20 August 2023
Sep19.1 mm (0.8 in)25 September 1986
Oct48.3 mm (1.9 in)10 October 1986
Nov61.0 mm (2.4 in)25 November 1985
Dec96.5 mm (3.8 in)22 December 2010

Period of Record Coverage

1979 to 2026
Days with data per year at El Cajon 48 years of record at El Cajon, 1979 to 2026. 23 years have data for under 90 percent of days and are left out of rankings: 1979, 1982, 1985, 1986, 1987, 1988, 1989, 1991 and others. 1979: 59 of 365 days1980: 362 of 366 days1981: 332 of 365 days1982: 309 of 365 days1983: 347 of 365 days1984: 332 of 366 days1985: 325 of 365 days1986: 306 of 365 days1987: 294 of 365 days1988: 308 of 366 days1989: 297 of 365 days1990: 330 of 365 days1991: 299 of 365 days1992: 251 of 366 days1993: 326 of 365 days1994: 262 of 365 days1995: 352 of 365 days1996: 283 of 366 days1997: 262 of 365 days1998: 169 of 365 days1999: 332 of 365 days2000: 343 of 366 days2001: 334 of 365 days2002: 298 of 365 days2003: 313 of 365 days2004: 287 of 366 days2005: 232 of 365 days2006: 233 of 365 days2007: 173 of 365 days2008: 310 of 366 days2009: 327 of 365 days2010: 359 of 365 days2011: 359 of 365 days2012: 366 of 366 days2013: 364 of 365 days2014: 364 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: 245 of 365 days19801990200020102020
48 years of record at El Cajon, 1979 to 2026. 23 years have data for under 90 percent of days and are left out of rankings: 1979, 1982, 1985, 1986, 1987, 1988, 1989, 1991 and others.
Days with data per year at El Cajon
YearDays with dataShare of yearComplete
19795916%No
198036299%Yes
198133291%Yes
198230985%No
198334795%Yes
198433291%Yes
198532589%No
198630684%No
198729481%No
198830884%No
198929781%No
199033090%Yes
199129982%No
199225169%No
199332689%No
199426272%No
199535296%Yes
199628377%No
199726272%No
199816946%No
199933291%Yes
200034394%Yes
200133492%Yes
200229882%No
200331386%No
200428778%No
200523264%No
200623364%No
200717347%No
200831085%No
200932790%No
201035998%Yes
201135998%Yes
2012366100%Yes
2013364100%Yes
2014364100%Yes
2015365100%Yes
2016366100%Yes
2017365100%Yes
2018365100%Yes
2019365100%Yes
2020366100%Yes
2021365100%Yes
2022365100%Yes
2023365100%Yes
2024366100%Yes
2025365100%Yes
202624567%No

Latest Records

20
Latest records at El Cajon
DateStationRecordValueBeat old record byOld record stoodSignificance
4 October 2026El Cajon, USdaily high min (Provisional)20.6 C (69.1 F)0.6 C (1.1 F)28 years13 of 100 (Routine)
3 October 2026El Cajon, USdaily high min (Provisional)21.1 C (70.0 F)1.7 C (3.1 F)28 years17 of 100 (Routine)
3 October 2026El Cajon, USdaily high max (Provisional)40.0 C (104.0 F)0.6 C (1.1 F)39 years16 of 100 (Routine)
29 August 2026El Cajon, USdaily high min (Provisional)22.8 C (73.0 F)0.6 C (1.1 F)12 years9 of 100 (Routine)
27 August 2026El Cajon, USdaily high min (Provisional)23.3 C (73.9 F)1.6 C (2.9 F)15 years15 of 100 (Routine)
23 August 2026El Cajon, USdaily high max (Provisional)38.3 C (100.9 F)1.6 C (2.9 F)40 years20 of 100 (Routine)
7 August 2026El Cajon, USdaily high min (Tie)21.1 C (70.0 F)tie43 years4 of 100 (Routine)
26 July 2026El Cajon, USdaily high min (Tie)21.1 C (70.0 F)tie7 years1 of 100 (Routine)
18 July 2026El Cajon, USdaily high min (Tie)20.6 C (69.1 F)tie41 years4 of 100 (Routine)
30 June 2026El Cajon, USdaily low max (Tie)24.4 C (75.9 F)tie44 years4 of 100 (Routine)
28 June 2026El Cajon, USdaily low max22.2 C (72.0 F)0.6 C (1.1 F)16 years9 of 100 (Routine)
13 June 2026El Cajon, USdaily high min (Tie)18.3 C (64.9 F)tie17 years2 of 100 (Routine)
12 June 2026El Cajon, USdaily high max34.4 C (93.9 F)3.3 C (5.9 F)31 years21 of 100 (Routine)
24 May 2026El Cajon, USdaily high min (Tie)16.7 C (62.1 F)tie33 years3 of 100 (Routine)
23 May 2026El Cajon, USdaily high min (Tie)16.1 C (61.0 F)tie12 years1 of 100 (Routine)
5 May 2026El Cajon, USdaily rain6.1 mm (0.24 in)0.3 mm (0.01 in)28 years12 of 100 (Routine)
20 April 2026El Cajon, USdaily high min15.0 C (59.0 F)0.6 C (1.1 F)11 years9 of 100 (Routine)
6 April 2026El Cajon, USdaily high min15.0 C (59.0 F)1.1 C (2.0 F)40 years20 of 100 (Routine)
1 April 2026El Cajon, USdaily high min15.0 C (59.0 F)1.1 C (2.0 F)11 years11 of 100 (Routine)
31 March 2026El Cajon, USmonthly high min (Tie)16.7 C (62.1 F)tie8 years4 of 100 (Routine)

Climate Trend

27 complete years, 1980 to 2025
Annual mean temperature at El Cajon as warming stripes, 1980 to 2025 One stripe for each of 27 complete years at El Cajon, 1980 to 2025. Blue stripes are years cooler than the station's own mean of 18.5 C (65.4 F); red stripes are warmer. The coolest year was 2023, at 17.6 C (63.6 F), and the warmest was 2014, at 20.0 C (67.9 F). The strongest colour marks a difference of 1.5 C (2.7 F). 1980: 18.6 C, 0.0 C from the station mean1983: 18.4 C, -0.1 C from the station mean1984: 18.7 C, +0.2 C from the station mean1985: 17.9 C, -0.7 C from the station mean1988: 18.1 C, -0.5 C from the station mean1990: 18.3 C, -0.2 C from the station mean1993: 18.6 C, +0.1 C from the station mean1995: 18.5 C, 0.0 C from the station mean1999: 18.0 C, -0.6 C from the station mean2000: 18.9 C, +0.3 C from the station mean2001: 18.2 C, -0.3 C from the station mean2010: 17.8 C, -0.7 C from the station mean2011: 17.6 C, -0.9 C from the station mean2012: 18.5 C, -0.1 C from the station mean2013: 18.1 C, -0.4 C from the station mean2014: 20.0 C, +1.4 C from the station mean2015: 19.7 C, +1.1 C from the station mean2016: 19.4 C, +0.8 C from the station mean2017: 19.5 C, +1.0 C from the station mean2018: 19.3 C, +0.7 C from the station mean2019: 18.2 C, -0.3 C from the station mean2020: 19.2 C, +0.6 C from the station mean2021: 18.7 C, +0.1 C from the station mean2022: 18.5 C, 0.0 C from the station mean2023: 17.6 C, -1.0 C from the station mean2024: 18.1 C, -0.4 C from the station mean2025: 18.4 C, -0.1 C from the station mean1980198519901995200020052010201520202025
One stripe for each of 27 complete years at El Cajon, 1980 to 2025. Blue stripes are years cooler than the station's own mean of 18.5 C (65.4 F); red stripes are warmer. The coolest year was 2023, at 17.6 C (63.6 F), and the warmest was 2014, at 20.0 C (67.9 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at El Cajon as warming stripes, 1980 to 2025
YearAnnual mean temperatureDifference from the station mean
198018.6 C+0.04 C
198318.4 C-0.11 C
198418.7 C+0.19 C
198517.9 C-0.66 C
198818.1 C-0.47 C
199018.3 C-0.21 C
199318.6 C+0.06 C
199518.5 C-0.02 C
199918.0 C-0.57 C
200018.9 C+0.33 C
200118.2 C-0.32 C
201017.8 C-0.72 C
201117.6 C-0.93 C
201218.5 C-0.07 C
201318.1 C-0.42 C
201420.0 C+1.41 C
201519.7 C+1.13 C
201619.4 C+0.81 C
201719.5 C+0.96 C
201819.3 C+0.75 C
201918.2 C-0.33 C
202019.2 C+0.64 C
202118.7 C+0.13 C
202218.5 C-0.04 C
202317.6 C-0.99 C
202418.1 C-0.43 C
202518.4 C-0.12 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1979 to 2026
Yearly extremes at El Cajon: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)45.6 C (114.1 F)202040.6 C (105.1 F)48
Coldest night (TNn)-3.9 C (25.0 F)1987-0.6 C (30.9 F)48
Wettest day (Rx1day)96.5 mm (3.8 in)201039.8 mm (1.6 in)48
Wettest five days (Rx5day)165.0 mm (6.5 in)201056.9 mm (2.2 in)48
Longest dry spell (CDD)241 days2000116 days48

Hottest day (TXx)

Hottest day (TXx) at El Cajon by year The hottest day of the year at El Cajon, 1979 to 2026. The record is 45.6 C (114.1 F) in 2020, marked on the chart; the median year is 40.6 C (105.1 F). 303540455019801990200020102020Record: 45.6 C (114.1 F) in 2020
The hottest day of the year at El Cajon, 1979 to 2026. The record is 45.6 C (114.1 F) in 2020, marked on the chart; the median year is 40.6 C (105.1 F).
Hottest day (TXx) at El Cajon by year
YearHottest day (TXx)
197933.9 C (93.0 F)
198040.6 C (105.1 F)
198140.6 C (105.1 F)
198242.8 C (109.0 F)
198340.6 C (105.1 F)
198441.7 C (107.1 F)
198542.2 C (108.0 F)
198637.8 C (100.0 F)
198741.1 C (106.0 F)
198842.8 C (109.0 F)
198942.2 C (108.0 F)
199041.1 C (106.0 F)
199141.1 C (106.0 F)
199239.4 C (102.9 F)
199337.8 C (100.0 F)
199441.7 C (107.1 F)
199540.6 C (105.1 F)
199639.4 C (102.9 F)
199740.0 C (104.0 F)
199832.2 C (90.0 F)
199940.6 C (105.1 F)
200039.4 C (102.9 F)
200137.8 C (100.0 F)
200241.1 C (106.0 F)
200339.4 C (102.9 F)
200440.0 C (104.0 F)
200538.3 C (100.9 F)
200645.0 C (113.0 F)
200734.4 C (93.9 F)
200841.1 C (106.0 F)
200941.7 C (107.1 F)
201042.8 C (109.0 F)
201140.0 C (104.0 F)
201239.4 C (102.9 F)
201338.3 C (100.9 F)
201440.0 C (104.0 F)
201540.6 C (105.1 F)
201641.7 C (107.1 F)
201741.1 C (106.0 F)
201844.4 C (111.9 F)
201940.0 C (104.0 F)
202045.6 C (114.1 F)
202138.3 C (100.9 F)
202238.3 C (100.9 F)
202338.9 C (102.0 F)
202442.2 C (108.0 F)
202537.2 C (99.0 F)
202640.0 C (104.0 F)

Coldest night (TNn)

Coldest night (TNn) at El Cajon by year The coldest night of the year at El Cajon, 1979 to 2026. The record is -3.9 C (25.0 F) in 1987, marked on the chart; the median year is -0.6 C (30.9 F). -4-20219801990200020102020Record: -3.9 C (25.0 F) in 1987
The coldest night of the year at El Cajon, 1979 to 2026. The record is -3.9 C (25.0 F) in 1987, marked on the chart; the median year is -0.6 C (30.9 F).
Coldest night (TNn) at El Cajon by year
YearColdest night (TNn)
1979-1.7 C (28.9 F)
19800.6 C (33.1 F)
19811.1 C (34.0 F)
1982-2.2 C (28.0 F)
1983-2.2 C (28.0 F)
1984-1.1 C (30.0 F)
1985-1.1 C (30.0 F)
19861.1 C (34.0 F)
1987-3.9 C (25.0 F)
1988-2.2 C (28.0 F)
1989-1.7 C (28.9 F)
1990-3.3 C (26.1 F)
1991-0.6 C (30.9 F)
1992-1.7 C (28.9 F)
1993-1.7 C (28.9 F)
1994-1.7 C (28.9 F)
19951.7 C (35.1 F)
19960.6 C (33.1 F)
19971.1 C (34.0 F)
19980.6 C (33.1 F)
19990.0 C (32.0 F)
2000-0.6 C (30.9 F)
2001-0.6 C (30.9 F)
2002-1.7 C (28.9 F)
2003-0.6 C (30.9 F)
2004-0.6 C (30.9 F)
20050.6 C (33.1 F)
20060.6 C (33.1 F)
2007-3.3 C (26.1 F)
20080.6 C (33.1 F)
20091.1 C (34.0 F)
2010-1.1 C (30.0 F)
2011-1.1 C (30.0 F)
2012-0.6 C (30.9 F)
2013-2.2 C (28.0 F)
20140.6 C (33.1 F)
20150.0 C (32.0 F)
20160.0 C (32.0 F)
20170.0 C (32.0 F)
20180.0 C (32.0 F)
2019-1.1 C (30.0 F)
2020-1.1 C (30.0 F)
20211.7 C (35.1 F)
2022-0.6 C (30.9 F)
2023-0.6 C (30.9 F)
20240.0 C (32.0 F)
2025-0.6 C (30.9 F)
20260.6 C (33.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at El Cajon by year The wettest day of the year at El Cajon, 1979 to 2026. The record is 96.5 mm (3.8 in) in 2010, marked on the chart; the median year is 39.8 mm (1.6 in). 025507510019801990200020102020Record: 96.5 mm (3.8 in) in 2010
The wettest day of the year at El Cajon, 1979 to 2026. The record is 96.5 mm (3.8 in) in 2010, marked on the chart; the median year is 39.8 mm (1.6 in).
Wettest day (Rx1day) at El Cajon by year
YearWettest day (Rx1day)
19794.3 mm (0.17 in)
198064.0 mm (2.5 in)
198148.3 mm (1.9 in)
198246.0 mm (1.8 in)
198347.0 mm (1.9 in)
198431.2 mm (1.2 in)
198561.0 mm (2.4 in)
198648.3 mm (1.9 in)
198734.0 mm (1.3 in)
198841.4 mm (1.6 in)
19896.1 mm (0.24 in)
199021.3 mm (0.8 in)
199148.3 mm (1.9 in)
199227.2 mm (1.1 in)
199347.0 mm (1.9 in)
199424.9 mm (1.0 in)
199553.6 mm (2.1 in)
199646.7 mm (1.8 in)
199740.6 mm (1.6 in)
199861.0 mm (2.4 in)
199919.3 mm (0.8 in)
200049.8 mm (2.0 in)
200130.7 mm (1.2 in)
200225.7 mm (1.0 in)
200333.0 mm (1.3 in)
200445.7 mm (1.8 in)
200533.0 mm (1.3 in)
200648.3 mm (1.9 in)
200733.0 mm (1.3 in)
200855.9 mm (2.2 in)
200931.0 mm (1.2 in)
201096.5 mm (3.8 in)
201133.0 mm (1.3 in)
201233.3 mm (1.3 in)
201323.9 mm (0.9 in)
201419.1 mm (0.8 in)
201518.0 mm (0.7 in)
201638.9 mm (1.5 in)
201737.8 mm (1.5 in)
201841.4 mm (1.6 in)
201954.6 mm (2.1 in)
202047.8 mm (1.9 in)
202137.8 mm (1.5 in)
202233.0 mm (1.3 in)
202357.9 mm (2.3 in)
202469.9 mm (2.8 in)
202532.8 mm (1.3 in)
202664.0 mm (2.5 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at El Cajon by year The wettest five days of the year at El Cajon, 1979 to 2026. The record is 165.0 mm (6.5 in) in 2010, marked on the chart; the median year is 56.9 mm (2.2 in). 05010015020019801990200020102020Record: 165.0 mm (6.5 in) in 2010
The wettest five days of the year at El Cajon, 1979 to 2026. The record is 165.0 mm (6.5 in) in 2010, marked on the chart; the median year is 56.9 mm (2.2 in).
Wettest five days (Rx5day) at El Cajon by year
YearWettest five days (Rx5day)
19797.1 mm (0.28 in)
1980146.6 mm (5.8 in)
198175.7 mm (3.0 in)
198299.3 mm (3.9 in)
1983163.3 mm (6.4 in)
198453.7 mm (2.1 in)
198594.1 mm (3.7 in)
198648.3 mm (1.9 in)
198745.0 mm (1.8 in)
198847.7 mm (1.9 in)
198910.4 mm (0.4 in)
199044.7 mm (1.8 in)
199191.5 mm (3.6 in)
199246.7 mm (1.8 in)
1993122.7 mm (4.8 in)
199450.8 mm (2.0 in)
199594.8 mm (3.7 in)
199649.7 mm (2.0 in)
199741.1 mm (1.6 in)
199899.6 mm (3.9 in)
199944.7 mm (1.8 in)
200065.4 mm (2.6 in)
200151.7 mm (2.0 in)
200253.1 mm (2.1 in)
200351.9 mm (2.0 in)
200486.9 mm (3.4 in)
200583.6 mm (3.3 in)
200650.8 mm (2.0 in)
200745.7 mm (1.8 in)
2008124.5 mm (4.9 in)
200955.1 mm (2.2 in)
2010165.0 mm (6.5 in)
201156.4 mm (2.2 in)
201247.3 mm (1.9 in)
201334.3 mm (1.4 in)
201438.9 mm (1.5 in)
201529.4 mm (1.2 in)
2016113.1 mm (4.5 in)
201776.2 mm (3.0 in)
201869.8 mm (2.7 in)
201970.8 mm (2.8 in)
2020105.7 mm (4.2 in)
202160.4 mm (2.4 in)
202257.4 mm (2.3 in)
2023103.9 mm (4.1 in)
202498.1 mm (3.9 in)
202555.2 mm (2.2 in)
202690.4 mm (3.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at El Cajon by year The longest dry spell of the year at El Cajon, 1979 to 2026. The record is 241 days in 2000, marked on the chart; the median year is 116 days. 010020030019801990200020102020Record: 241 days in 2000
The longest dry spell of the year at El Cajon, 1979 to 2026. The record is 241 days in 2000, marked on the chart; the median year is 116 days.
Longest dry spell (CDD) at El Cajon by year
YearLongest dry spell (CDD)
197942 days
1980168 days
1981102 days
1982107 days
1983108 days
1984198 days
1985124 days
1986131 days
198797 days
1988197 days
1989128 days
199068 days
199196 days
199248 days
1993126 days
199461 days
1995138 days
199697 days
1997149 days
199824 days
1999188 days
2000241 days
2001142 days
2002132 days
200392 days
2004171 days
200578 days
200669 days
200730 days
2008161 days
2009119 days
2010141 days
201190 days
2012138 days
2013155 days
201498 days
201556 days
2016113 days
2017226 days
2018132 days
2019123 days
2020153 days
202182 days
2022139 days
202369 days
202497 days
2025101 days
202694 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

38 years, 1980 to 2025

A day with at least 39.8 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 84.7 mm (3.3 in) of rain is expected about once in 100 years.

Rainfall return levels at El Cajon: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years39.8 mm (1.6 in)
5 years54.6 mm (2.1 in)
10 years63.1 mm (2.5 in)
25 years72.7 mm (2.9 in)
50 years79.0 mm (3.1 in)Longer than the 38 years of record
100 years84.7 mm (3.3 in)Longer than the 38 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, 38 years of values from 1980 to 2025.

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: 96.5 mm (3.8 in) in 2010; 69.9 mm (2.8 in) in 2024; 64.0 mm (2.5 in) in 1980.

Download the Data

  • Data for El Cajon standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for El Cajon 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 (2026-10-14).