Heavy Lake Effect Snow and Bitterly Cold Temperatures

A bitterly cold airmass will settle over much of the central and eastern U.S over the next several days. Well below normal temperatures and cold wind chills will be common. In addition, heavy lake effect snow will be possible especially downwind of Lakes Erie and Ontario, where up to one foot of additional snow is forecast by Sunday morning.
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Current conditions at

DW9961 Petaluma (D9961)

Lat: 38.45°NLon: -122.59°WElev: 43ft.

NA

47°F

8°C

Humidity 96%
Wind Speed NA
Barometer 30.17 in
Dewpoint 46°F (8°C)
Visibility NA
Last update 12 Feb 3:55 am PST
Extended Forecast for

7 Miles SW Saint Helena CA

  • Today

    Today: Patchy fog before 10am.  Otherwise, mostly sunny, with a high near 70. West wind 5 to 8 mph.

    Patchy Fog
    then Mostly
    Sunny

    High: 70 °F

  • Tonight

    Tonight: Partly cloudy, with a low around 45. Northwest wind 3 to 6 mph.

    Partly Cloudy

    Low: 45 °F

  • Saturday

    Saturday: Mostly sunny, with a high near 70. Calm wind becoming west 5 to 8 mph in the morning.

    Mostly Sunny

    High: 70 °F

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around 46. West northwest wind 5 to 8 mph becoming calm  in the evening.

    Partly Cloudy

    Low: 46 °F

  • Sunday

    Sunday: Mostly sunny, with a high near 75. West northwest wind 5 to 8 mph.

    Mostly Sunny

    High: 75 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 51.

    Partly Cloudy

    Low: 51 °F

  • Washington's
    Birthday

    Washington's Birthday: Mostly sunny, with a high near 77. Windy.

    Mostly Sunny
    and Windy
    then Mostly
    Sunny

    High: 77 °F

  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 47.

    Partly Cloudy

    Low: 47 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 73.

    Mostly Sunny

    High: 73 °F

Detailed Forecast

Today
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 70. West wind 5 to 8 mph.
Tonight
Partly cloudy, with a low around 45. Northwest wind 3 to 6 mph.
Saturday
Mostly sunny, with a high near 70. Calm wind becoming west 5 to 8 mph in the morning.
Saturday Night
Partly cloudy, with a low around 46. West northwest wind 5 to 8 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 75. West northwest wind 5 to 8 mph.
Sunday Night
Partly cloudy, with a low around 51.
Washington's Birthday
Mostly sunny, with a high near 77. Windy.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
Mostly sunny, with a high near 73.
Tuesday Night
Mostly cloudy, with a low around 50.
Wednesday
A chance of rain. Partly sunny, with a high near 61.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 46.
Thursday
A chance of rain. Partly sunny, with a high near 59.
Click Map For Forecast
Point Forecast:
7 Miles SW Saint Helena CA
 38.45°N 122.59°W (Elev. 535 ft)
2:13 am PST Feb 12, 2016
4am PST Feb 12, 2016-6pm PST Feb 18, 2016
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database