National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

DW5683 Carlsbad (D5683)

Lat: 33.12255°NLon: 117.22785°WElev: 583.0ft.

NA

56°F

13°C

Humidity 84%
Wind Speed N 0 MPH
Barometer 30.03 in (1016.93 mb)
Dewpoint 51°F (11°C)
Visibility NA
Last update 21 Jan 08:45 PM PST
Extended Forecast for

San Marcos CA

  • Tonight

    Tonight: Patchy fog before 1am. Otherwise, mostly cloudy, with a low around 50. Calm wind.

    Low: 50 °F

    Patchy Fog

  • Thursday

    Thursday: A slight chance of showers after 10am. Mostly cloudy, with a high near 66. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 66 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers. Mostly cloudy, with a low around 51. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 51 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers. Mostly cloudy, with a high near 63. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 63 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers. Mostly cloudy, with a low around 50. West wind around 5 mph becoming calm. Chance of precipitation is 20%.

    Low: 50 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers. Cloudy through mid morning, then gradual clearing, with a high near 64. Chance of precipitation is 20%.

    High: 64 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog before 1am. Otherwise, mostly cloudy, with a low around 50. Calm wind.
Thursday
A slight chance of showers after 10am. Mostly cloudy, with a high near 66. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 51. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A chance of showers. Mostly cloudy, with a high near 63. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A slight chance of showers. Mostly cloudy, with a low around 50. West wind around 5 mph becoming calm. Chance of precipitation is 20%.
Saturday
A slight chance of showers. Cloudy through mid morning, then gradual clearing, with a high near 64. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 45.
Sunday
Mostly sunny, with a high near 67.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Mostly sunny, with a high near 69.
Monday Night
Mostly clear, with a low around 46.
Tuesday
Sunny, with a high near 71.
Tuesday Night
Partly cloudy, with a low around 48.
Wednesday
Mostly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
San Marcos CA
 33.15°N 117.16°W (Elev. 669 ft)
Last Update:
7:52 pm PST Jan 21, 2026
Forecast Valid:
9pm PST Jan 21, 2026-6pm PST Jan 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation