San Marcos, CA Weather Forecast
Local 7-day forecast
Patchy Fog
Track current conditions, temperature changes, wind, and the full daily outlook for San Marcos, CA in one place.
Patchy fog after 2am. Partly cloudy, with a low around 60. Southwest wind around 0 mph.
Local Weather Overview
This forecast page for 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 10, 2026 3:57 AM PDT.
The active forecast window currently covers Jun 10 to Jun 16, 2026 for San Marcos, CA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 10 to Jun 16, 2026
- Latest sync
- Jun 10, 2026 3:57 AM PDT
- Forecast office
- SGX
- Source
- NOAA / NWS
Daily Outlook
This Week in San Marcos
Friday looks like the warmest upcoming period in San Marcos at 78 degrees F.
Overnight is the coolest period ahead with temperatures near 60 degrees F.
The strongest winds are forecast for Wednesday at about 0 to 10 mph SW.
The forecast from Jun 10 through Jun 16 stays mostly dry.
Forecast Details
- Last updated
- Jun 10, 2026 3:57 AM PDT
- Coverage
- 7 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
Patchy fog before 8am. Sunny, with a high near 77. Southwest wind 0 to 10 mph, with gusts as high as 20 mph.
Patchy fog after 11pm. Partly cloudy, with a low around 61. Southwest wind 0 to 5 mph.
Patchy fog before 8am. Sunny, with a high near 77. West wind 0 to 5 mph.
Patchy fog after 2am. Partly cloudy, with a low around 61. Northwest wind 0 to 5 mph.
Patchy fog before 8am. Mostly sunny, with a high near 78.
Partly cloudy, with a low around 62.
Sunny, with a high near 77.
Partly cloudy, with a low around 63.
Sunny, with a high near 76.
Partly cloudy, with a low around 62.
Mostly sunny, with a high near 76.
Partly cloudy, with a low around 61.
Sunny, with a high near 75.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Jun 10
|
Patchy Fog
|
60°F |
0 mph
|
|
Wednesday
Jun 10
|
Patchy Fog then Sunny
|
77°F |
0 to 10 mph
SW
|
|
Wednesday Night
Jun 10
|
Patchy Fog
|
61°F |
0 to 5 mph
SW
|
|
Thursday
Jun 11
|
Patchy Fog then Sunny
|
77°F |
0 to 5 mph
W
|
|
Thursday Night
Jun 11
|
Partly Cloudy then Patchy Fog
|
61°F |
0 to 5 mph
NW
|
|
Friday
Jun 12
|
Patchy Fog then Mostly Sunny
|
78°F |
0 to 10 mph
NW
|
|
Friday Night
Jun 12
|
Partly Cloudy
|
62°F |
0 to 5 mph
NW
|
|
Saturday
Jun 13
|
Sunny
|
77°F |
0 to 10 mph
W
|
|
Saturday Night
Jun 13
|
Partly Cloudy
|
63°F |
0 to 10 mph
W
|
|
Sunday
Jun 14
|
Sunny
|
76°F |
0 to 10 mph
W
|
|
Sunday Night
Jun 14
|
Partly Cloudy
|
62°F |
0 to 10 mph
W
|
|
Monday
Jun 15
|
Mostly Sunny
|
76°F |
0 to 10 mph
W
|
|
Monday Night
Jun 15
|
Partly Cloudy
|
61°F |
0 to 10 mph
NW
|
|
Tuesday
Jun 16
|
Sunny
|
75°F |
0 to 10 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around San Marcos.
