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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Petaluma CA

7 Day Forecast

Overnight

Chance Rain Chance for Measurable Precipitation 50%

Chance
Rain

Low: 51 °F

Friday

Showers Chance for Measurable Precipitation 80%

Showers

High: 65 °F

Friday
Night

Showers Likely Chance for Measurable Precipitation 60%

Showers
Likely

Low: 44 °F

Saturday

Chance Showers Chance for Measurable Precipitation 30%

Chance
Showers

High: 65 °F

Saturday
Night

Patchy Fog

Patchy
Fog

Low: 42 °F

Sunday

Patchy Fog

Patchy
Fog

High: 68 °F

Sunday
Night

Mostly Clear

Mostly
Clear

Low: 43 °F

Monday

Sunny

Sunny

High: 70 °F

Monday
Night

Partly Cloudy

Partly
Cloudy

Low: 44 °F

Detailed Forecast

  • Overnight A 50 percent chance of rain. Cloudy, with a low around 51. Calm wind.
  • Friday Showers, with thunderstorms also possible after 11am. High near 65. Light and variable wind becoming west 6 to 11 mph 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 44. North northwest wind 7 to 9 mph. Chance of precipitation is 60%.
  • Saturday A 30 percent chance of showers. Partly sunny, with a high near 65. West northwest wind 8 to 13 mph.
  • Saturday Night Patchy fog after 11pm. Otherwise, mostly clear, with a low around 42. West wind 5 to 13 mph becoming north in the evening.
  • Sunday Patchy fog before 11am. Otherwise, sunny, with a high near 68.
  • Sunday Night Mostly clear, with a low around 43.
  • Monday Sunny, with a high near 70.
  • Monday Night Partly cloudy, with a low around 44.
  • Tuesday Mostly sunny, with a high near 72.
  • Tuesday Night Mostly clear, with a low around 46.
  • Wednesday Sunny, with a high near 74.
  • Wednesday Night Mostly clear, with a low around 47.
  • Thursday Sunny, with a high near 74.