Snow Squalls May Impact the Northeast on Thursday; Dangerously Cold Arctic Air Impact the North-Central US

Snow showers and snow squalls are likely to develop across the Northeast on Thursday. Lake effect snow will persist downwind of the Great Lakes. An arctic blast will bring frigid temperatures, gusty winds and dangerous wind chills to the Northern Plains before expanding to the South and East. A major winter storm will begin impacting the Southern Plains and Lower Mississippi Valley Friday. Read More >

Current conditions at

SAN FRANCISCO DOWNTOWN (SFOC1)

Lat: 37.77056° N Lon: 122.42694° W Elev: 150.0 ft.

NA

55°F

13°C

Humidity 69%
Wind Speed NA NA MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 21 Jan 04:43 PM PST
Detailed forecast for

San Francisco County

Tonight
Mostly cloudy. Lows around 50. West winds around 5 mph in the evening...becoming light.
Thursday
Mostly cloudy in the morning then becoming partly cloudy. Patchy fog in the morning. Highs around 60. West winds 5 to 10 mph.
Thursday Night
Partly cloudy in the evening then becoming mostly cloudy. Patchy fog after midnight. Lows around 50. West winds around 5 mph.
Friday
Mostly cloudy in the morning then becoming partly cloudy. Patchy fog in the morning. Highs in the upper 50s. East winds around 5 mph...becoming north in the afternoon.
Friday Night
Mostly clear in the evening then becoming partly cloudy. Lows in the upper 40s. Northwest winds around 5 mph... Becoming northeast after midnight.
Saturday
Sunny. Highs in the lower 60s.
Saturday Night
Mostly clear in the evening then becoming partly cloudy. Lows in the mid 40s.
Sunday And Sunday Night
Mostly cloudy. Highs in the upper 50s. Lows in the mid 40s.
Monday Through Tuesday
Partly cloudy. Highs in the lower 60s. Lows in the mid to upper 40s.
Tuesday Night
Partly cloudy in the evening then becoming mostly cloudy. A slight chance of rain. Lows in the upper 40s.
Wednesday
Mostly cloudy. A chance of rain. Highs around 60.



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501 PM PST Wed Jan 21 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database