Lake Forest, CA Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Lake Forest, CA in one place.
Mostly sunny, with a high near 90. Southwest wind 0 to 5 mph.
Local Weather Overview
This forecast page for Lake Forest, CA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Aug 2, 2026 5:59 PM PDT.
The active forecast window currently covers Aug 3 to Aug 8, 2026 for Lake Forest, CA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 3 to Aug 8, 2026
- Latest sync
- Aug 2, 2026 5:59 PM PDT
- Forecast office
- SGX
- Source
- NOAA / NWS
Daily Outlook
This Week in Lake Forest
Monday looks like the warmest upcoming period in Lake Forest at 90 degrees F.
Monday Night is the coolest period ahead with temperatures near 66 degrees F.
The strongest winds are forecast for Wednesday at about 0 to 10 mph W.
The forecast from Aug 3 through Aug 8 stays mostly dry.
Forecast Details
- Last updated
- Aug 2, 2026 5:59 PM PDT
- Coverage
- 7 days
- Time zone
- America/Los_Angeles
- Forecast office
- SGX
- Radar station
- KSOX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 66. Southwest wind 0 to 5 mph.
Mostly sunny, with a high near 89. Southwest wind 0 to 5 mph.
Partly cloudy, with a low around 66.
Sunny, with a high near 88.
Mostly clear, with a low around 66.
Sunny, with a high near 89.
Mostly clear, with a low around 67.
Sunny, with a high near 90.
Mostly clear, with a low around 68.
Sunny, with a high near 89.
Partly cloudy, with a low around 67.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Aug 3
|
Mostly Sunny
|
90°F |
0 to 5 mph
SW
|
|
Monday Night
Aug 3
|
Partly Cloudy
|
66°F |
0 to 5 mph
SW
|
|
Tuesday
Aug 4
|
Mostly Sunny
|
89°F |
0 to 5 mph
SW
|
|
Tuesday Night
Aug 4
|
Partly Cloudy
|
66°F |
0 to 5 mph
SW
|
|
Wednesday
Aug 5
|
Sunny
|
88°F |
0 to 10 mph
W
|
|
Wednesday Night
Aug 5
|
Mostly Clear
|
66°F |
0 to 10 mph
SW
|
|
Thursday
Aug 6
|
Sunny
|
89°F |
0 to 5 mph
W
|
|
Thursday Night
Aug 6
|
Mostly Clear
|
67°F |
0 to 5 mph
S
|
|
Friday
Aug 7
|
Sunny
|
90°F |
0 to 5 mph
S
|
|
Friday Night
Aug 7
|
Mostly Clear
|
68°F |
0 to 5 mph
S
|
|
Saturday
Aug 8
|
Sunny
|
89°F |
0 to 5 mph
S
|
|
Saturday Night
Aug 8
|
Partly Cloudy
|
67°F |
0 to 5 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Lake Forest.
