National Weather Service United States Department of Commerce

Unseasonably cold temperatures spreading into central U.S.

A strong cold front will usher a much colder air mass into the central and eastern U.S. for the end of the work week. Temperatures will be 10 to 20 degrees below average in some areas. Rain and snow will be possible across the Great Lakes on Friday as the system crosses the area. Heavy snow is possible in the central Appalachians Friday night.
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Current Conditions

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San Francisco CA

7 Day Forecast

Tonight

Chance Rain Chance for Measurable Precipitation 30%

Chance
Rain

Low: 14 °C

Friday

Showers Chance for Measurable Precipitation 80%

Showers

High: 18 °C

Friday
Night

Showers Likely Chance for Measurable Precipitation 70%

Showers
Likely

Low: 12 °C

Saturday

Chance Showers Chance for Measurable Precipitation 30%

Chance
Showers

High: 18 °C

Saturday
Night

Patchy Fog

Patchy
Fog

Low: 11 °C

Sunday

Patchy Fog

Patchy
Fog

High: 19 °C

Sunday
Night

Mostly Clear

Mostly
Clear

Low: 11 °C

Monday

Sunny

Sunny

High: 21 °C

Monday
Night

Partly Cloudy

Partly
Cloudy

Low: 11 °C

Detailed Forecast

  • Tonight A 30 percent chance of rain after 11pm. Cloudy, with a low around 14. Southwest wind 8 to 11 km/h.
  • Friday Showers. High near 18. South southeast wind 11 to 16 km/h becoming west in the afternoon. Chance of precipitation is 80%.
  • Friday Night Showers likely and possibly a thunderstorm. Some of the storms could produce small hail. Mostly cloudy, with a low around 12. Northwest wind 13 to 16 km/h. Chance of precipitation is 70%.
  • Saturday A 30 percent chance of showers, mainly before 11am. Partly sunny, with a high near 18. West wind 18 to 23 km/h, with gusts as high as 29 km/h.
  • Saturday Night Patchy fog after 11pm. Otherwise, mostly clear, with a low around 11. North northwest wind 16 to 21 km/h decreasing to 10 to 15 km/h in the evening.
  • Sunday Patchy fog before 11am. Otherwise, sunny, with a high near 19.
  • Sunday Night Mostly clear, with a low around 11.
  • Monday Sunny, with a high near 21.
  • Monday Night Partly cloudy, with a low around 11.
  • Tuesday Mostly sunny, with a high near 22.
  • Tuesday Night Partly cloudy, with a low around 12.
  • Wednesday Mostly sunny, with a high near 23.
  • Wednesday Night Partly cloudy, with a low around 13.
  • Thursday Mostly sunny, with a high near 23.