Hourly Weather Forecast - San Marcos, CA

12 AM
56°F
0%
2mph
ENE
Cloudy
Humidity
91%
Feels like
56°F
Dew Point
53°F
1 AM
56°F
0%
2mph
E
Cloudy
Humidity
92%
Feels like
56°F
Dew Point
54°F
2 AM
55°F
10%
2mph
E
Cloudy
Humidity
94%
Feels like
55°F
Dew Point
54°F
3 AM
54°F
10%
2mph
E
Mostly Cloudy
Humidity
96%
Feels like
54°F
Dew Point
53°F
4 AM
53°F
10%
2mph
E
Mostly Cloudy
Humidity
98%
Feels like
53°F
Dew Point
53°F
5 AM
52°F
10%
2mph
E
Foggy
Humidity
99%
Feels like
52°F
Dew Point
52°F
6 AM
52°F
10%
2mph
ESE
Mostly Cloudy
Humidity
98%
Feels like
52°F
Dew Point
52°F
6:48 AM
7 AM
54°F
10%
3mph
ESE
Mostly Cloudy
Humidity
94%
Feels like
54°F
Dew Point
53°F
8 AM
57°F
10%
3mph
SE
Mostly Cloudy
Humidity
87%
Feels like
57°F
Dew Point
53°F
9 AM
61°F
10%
2mph
SSE
Partly Cloudy
Humidity
74%
Feels like
61°F
Dew Point
53°F
10 AM
64°F
10%
3mph
S
Partly Cloudy
Humidity
64%
Feels like
64°F
Dew Point
51°F
11 AM
66°F
10%
4mph
S
Partly Cloudy
Humidity
61%
Feels like
66°F
Dew Point
52°F
12 PM
66°F
10%
5mph
SSW
Mostly Cloudy
Humidity
62%
Feels like
66°F
Dew Point
53°F
1 PM
66°F
10%
6mph
SSW
Mostly Cloudy
Humidity
66%
Feels like
66°F
Dew Point
54°F

Rainfall and Snowfall Totals Through Thursday

Flooding Rain, Heavy Snow and Winds Slam Northwest, North-Central U.S.

The atmospheric river this week will keep buffeting the Pacific Northwest with heavy rain, snow, and high winds.

Thursday's Weather Outlook

Thursday's Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A person standing in a snowy forest with their back to the camera. They are bundled up in a white hat and a brown jacket. (Image by StockSnap from Pixabay)

Common Cold Weather Illnesses

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

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