Lake San Marcos, CA Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Lake San Marcos, CA in one place.
Mostly sunny, with a high near 73.
Local Weather Overview
This forecast page for Lake San Marcos, 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: Jun 4, 2026 11:43 AM PDT.
The active forecast window currently covers Jun 10, 2026 for Lake San Marcos, CA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 10, 2026
- Latest sync
- Jun 4, 2026 11:43 AM PDT
- Forecast office
- SGX
- Source
- NOAA / NWS
Daily Outlook
This Week in Lake San Marcos
Wednesday looks like the warmest upcoming period in Lake San Marcos at 73 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 60 degrees F.
The strongest winds are forecast for Wednesday at about 5 to 10 mph SW.
The forecast from Jun 10 through Jun 10 stays mostly dry.
Forecast Details
- Last updated
- Jun 4, 2026 11:43 AM PDT
- Coverage
- 2 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
Partly cloudy, with a low around 60.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Jun 10
|
Mostly Sunny
|
73°F |
5 to 10 mph
SW
|
|
Wednesday Night
Jun 10
|
Partly Cloudy
|
60°F |
5 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Lake San Marcos.