San Marcos, CA Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for San Marcos, CA in one place.
Sunny, with a high near 80. South wind 5 to 10 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: Nov 11, 2026 3:35 AM PST.
The active forecast window currently covers Nov 12 to Nov 17, 2026 for San Marcos, CA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Nov 12 to Nov 17, 2026
- Latest sync
- Nov 11, 2026 3:35 AM PST
- Forecast office
- SGX
- Source
- NOAA / NWS
Daily Outlook
This Week in San Marcos
Thursday looks like the warmest upcoming period in San Marcos at 80 degrees F.
Saturday Night is the coolest period ahead with temperatures near 53 degrees F.
The strongest winds are forecast for Thursday at about 5 to 10 mph S.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- Nov 11, 2026 3:35 AM PST
- Coverage
- 6 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
Rain showers after 10pm. Mostly cloudy, with a low around 60. Southeast wind 0 to 5 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Rain showers. Mostly cloudy, with a high near 70. Chance of precipitation is 80%.
Rain showers. Mostly cloudy, with a low around 57.
Rain showers. Mostly cloudy, with a high near 68.
A slight chance of rain showers before 10pm. Mostly cloudy, with a low around 53.
Mostly sunny, with a high near 69.
A chance of rain showers after 10pm. Partly cloudy, with a low around 54.
Rain showers likely. Mostly cloudy, with a high near 67.
Rain showers likely. Mostly cloudy, with a low around 53.
A chance of rain showers before 4pm. Mostly sunny, with a high near 66.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Nov 12
|
Sunny
|
80°F |
5 to 10 mph
S
|
|
Thursday Night
Nov 12
|
Rain Showers
|
60°F |
0 to 5 mph
SE
|
|
Friday
Nov 13
|
Rain Showers
|
70°F |
5 to 10 mph
S
|
|
Friday Night
Nov 13
|
Rain Showers
|
57°F |
10 mph
SW
|
|
Saturday
Nov 14
|
Rain Showers
|
68°F |
5 to 10 mph
SW
|
|
Saturday Night
Nov 14
|
Slight Chance Rain Showers then Mostly Cloudy
|
53°F |
5 to 10 mph
S
|
|
Sunday
Nov 15
|
Mostly Sunny
|
69°F |
0 to 5 mph
SW
|
|
Sunday Night
Nov 15
|
Chance Rain Showers
|
54°F |
0 to 5 mph
N
|
|
Monday
Nov 16
|
Rain Showers Likely
|
67°F |
5 to 10 mph
SW
|
|
Monday Night
Nov 16
|
Rain Showers Likely
|
53°F |
5 to 10 mph
W
|
|
Tuesday
Nov 17
|
Chance Rain Showers
|
66°F |
5 to 10 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around San Marcos.
