El Cajon, CA Weather

San Diego County12:34 AM PDT32.79°N, 116.96°WElevation 436 ft

Current conditions

Patchy Fog
64°
Patchy Fog
Feels like 64°
High 84°·Low 60° tonight
WindCalm
Humidity89%
Dew point61°
Pressure29.90 inHg
Cloud cover46%
UV index0 Low
Sunrise6:56 AM
Sunset6:10 PM

Observed at EW3070 Rancho San Diego · 1 hr ago

Forecast

10-day

  • Tonight

    Patchy fog after 11pm. Partly cloudy, with a low around 60. South wind around 0 mph.

  • Tuesday

    Patchy fog before 8am. Mostly sunny, with a high near 84. South wind 0 to 10 mph.

  • Tuesday Night

    Patchy fog between 11pm and 5am. Mostly cloudy, with a low around 59. South wind 0 to 5 mph.

National Weather Service forecast updated 12 hrs ago.

Hourly

Hourly forecast
  1. Now Patchy Fog 65°
  2. 1 AM Patchy Fog 64°
  3. 2 AM Patchy Fog 63°
  4. 3 AM Patchy Fog 62°
  5. 4 AM Patchy Fog 62°
  6. 5 AM Patchy Fog 61°
  7. 6 AM Patchy Fog 61°
  8. 7 AM Patchy Fog 60°
  9. 8 AM Mostly Sunny 63°
  10. 9 AM Mostly Sunny 69°
  11. 10 AM Mostly Sunny 75°
  12. 11 AM Sunny 80°
  13. 12 PM Sunny 83°
  14. 1 PM Sunny 83°
  15. 2 PM Sunny 84°
  16. 3 PM Sunny 82°
  17. 4 PM Sunny 80°
  18. 5 PM Mostly Sunny 78°
  19. 6 PM Partly Cloudy 76°
  20. 7 PM Partly Cloudy 72°
  21. 8 PM Partly Cloudy 69°
  22. 9 PM Partly Cloudy 67°
  23. 10 PM Partly Cloudy 65°
  24. 11 PM Patchy Fog 64°

10-day forecast

Details
  1. TonightOct 19 Patchy Fog Patchy Fog60°
  2. TodayOct 20 Patchy Fog then Mostly Sunny Patchy Fog then Mostly Sunny59°84°
  3. WedOct 21 Mostly Sunny then Chance Rain Showers Mostly Sunny then Chance Rain Showers83%59°79°
  4. ThuOct 22 Showers And Thunderstorms Showers And Thunderstorms83%55°71°
  5. FriOct 23 Sunny Sunny55°74°
  6. SatOct 24 Sunny Sunny57°81°
  7. SunOct 25 Sunny Sunny58°83°
  8. MonOct 26 Mostly Sunny Mostly Sunny10%82°
  9. TueOct 27 Mostly sunny Mostly sunny59°87°
  10. WedOct 28 Cloudy Cloudy62°85°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

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Weather news in California

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Air quality

50
Good
Fine particles (PM2.5)

Air quality is satisfactory, and air pollution poses little or no risk.

Forecast

  • TueGood (49)
  • WedGood (45)

San Diego Mesa and Inland Valley, CA reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 6:56 AM
Sunset 6:10 PM
Daylight 11 h 13 min (−1 min 54 s tomorrow)
Waxing Gibbous · 66% lit
Moonrise 3:07 PM Moonset 1:23 AM
Full moon Oct 26 New moon Nov 8

Nearby

Forecasters' discussion

From the National Weather Service office in SGX, issued 1 hr ago

Synopsis

Onshore flow will begin to spread cooling inland today with a return of coastal low clouds and fog likely for tonight into Tuesday morning. A low pressure system from the north will bring greater cooling for Wednesday and Thursday along with showers and a chance of thunderstorms, most likely for Wednesday night through Thursday afternoon. Then dry and warmer for next weekend.

Discussion

FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...

...UPDATED AVIATION DISCUSSION...

Onshore flow ahead of a low pressure system approaching from the northwest will help to spread the low clouds into the coastal areas tonight. A developing coastal eddy, cyclonic flow aloft and falling heights will cause the marine layer to deepen and the clouds to lift overnight into Tuesday morning.

We can expect a general cooling trend through Thursday as the low pressure system moves into SoCal. Thursday will likely be the coolest day, with temperatures from a few degrees to as much a 15 degrees below normal. Ahead of the system, moisture from the low latitudes will likely be drawn into socal with the flow aloft. The system will use this moisture to produce light precipitation as early as Wednesday morning. Precipitation will become more widespread, progressing from northwest to southeast across the region and increasing in intensity on Thursday as the system moves through Socal. Conditions become most unstable on Thursday as colder air moves in aloft from the northwest bringing a chance for thunderstorms for Thursday morning through Thursday afternoon. Precipitation will taper off by Friday morning as the upper level trough axis moves east and conditions become more stable.

For Orange and southwestern San Bernardino Counties, rainfall could range from around 1 inch for the Orange County coastal plain to around 1.5 inches on the coastal slopes of the mountains with amounts decreasing from north to south into San Diego County. For the 24 hr period ending at 5 pm Thursday, there is a 35 to 65 percent chance of greater than 1 inch of rainfall in San Diego County from the coast to the mountains. There is about a 30 to 45 percent chance of 1 inch or more in the Inland Empire and about a 45 to 65 percent chance in Orange County, the Santa Ana Mountains and on the slopes of the San Bernardino Mountains.

The snow level will drop to around 8,000 ft on Thursday afternoon and the highest peaks of the San Bernardino and San Jacinto mountains could get small amounts of snow.

Aviation

200530Z...Coast...Gradually increasing low clouds based around 1000- 1200 feet MSL overnight. Vis reduced 3-5SM on mesas. Cigs lifting some before scatter out 16-18Z Tuesday. Low clouds based around 1500- 2000 feet MSL to redevelop after 03Z Tuesday evening.

Otherwise...mostly clear and VFR conditions through Tuesday morning, until SCT-BKN clouds based around 10 kft develop over inland areas, especially mountains 19-01Z. Isold SHRA 21-01Z Tuesday.

Marine

No hazardous marine conditions are expected through Wednesday morning. A storm system moves into the region later Wednesday through Thursday, bringing gusts at or exceeding 20 knots and associated choppy seas, along with a 10-20% chance of TSRA.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.