Lake San Marcos, CA Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Lake San Marcos, CA in one place.
Sunny, with a high near 81.
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: Oct 9, 2026 2:29 AM PDT.
The active forecast window currently covers Oct 15, 2026 for Lake San Marcos, CA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15, 2026
- Latest sync
- Oct 9, 2026 2:29 AM PDT
- Forecast office
- SGX
- Source
- NOAA / NWS
Daily Outlook
This Week in Lake San Marcos
Thursday looks like the warmest upcoming period in Lake San Marcos at 81 degrees F.
Thursday is the coolest period ahead with temperatures near 81 degrees F.
The strongest winds are forecast for Thursday at about 5 mph N.
The forecast from Oct 15 through Oct 15 stays mostly dry.
Forecast Details
- Last updated
- Oct 9, 2026 2:29 AM PDT
- Coverage
- 1 day
- 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
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Oct 15
|
Sunny
|
81°F |
5 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Lake San Marcos.