San Diego County, CA Weather Forecast
County weather hub
Sunny
Compare major city weather across San Diego County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 94.
County Weather Overview
This county weather page brings together forecast coverage for San Diego County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 21 of 22 mapped cities in San Diego County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Aug 23 to Aug 24, 2026
- Latest sync
- Aug 18, 2026 11:12 AM PDT
- Forecast office
- SGX
- Source
- NOAA / NWS
Daily Outlook
This Week in San Diego County
Sunday looks like the warmest upcoming period in San Diego County at 94 degrees F.
Sunday Night is the coolest period ahead with temperatures near 67 degrees F.
The strongest winds are forecast for Sunday at about 0 to 10 mph W.
The forecast from Aug 23 through Aug 24 stays mostly dry.
Forecast Details
- Last updated
- Aug 18, 2026 11:12 AM PDT
- Coverage
- 3 days
- Time zone
- America/Los_Angeles
- Forecast office
- SGX
- Radar station
- KNKX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 67.
Sunny, with a high near 93.
Mostly clear, with a low around 67.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Aug 23
|
Sunny
|
94°F |
0 to 10 mph
W
|
|
Sunday Night
Aug 23
|
Mostly Clear
|
67°F |
0 to 10 mph
N
|
|
Monday
Aug 24
|
Sunny
|
93°F |
0 to 10 mph
W
|
|
Monday Night
Aug 24
|
Mostly Clear
|
67°F |
0 to 5 mph
NW
|
Major City Forecasts
Live forecast snapshots for major cities across San Diego County.
Coverage
Forecast coverage currently spans 21 of 22 mapped cities in San Diego County.
Largest mapped city population in this region: 1,422,420.
