National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

Laurence G Hanscom Field Airport (KBED)

Lat: 42.47°NLon: 71.29°WElev: 132ft.

Fair

8°F

-13°C

Humidity 69%
Wind Speed Calm
Barometer 30.23 in (1025.7 mb)
Dewpoint 0°F (-18°C)
Visibility 10.00 mi
Last update 9 Dec 12:51 am EST
Extended Forecast for

Acton MA

  • Overnight

    Overnight: Mostly clear, with a low around 2. Calm wind.

    Low: 2 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 28. Calm wind.

    High: 28 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A chance of snow before 4am, then a slight chance of snow after 5am. Mostly cloudy, with a low around 23. Calm wind. Chance of precipitation is 50%. Little or no snow accumulation expected.

    Low: 23 °F

    Chance Snow

  • Wednesday

    Wednesday: A slight chance of snow before 9am, then rain. High near 43. Calm wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 43 °F

    Chance
    Rain/Snow
    then Rain

  • Wednesday Night

    Wednesday Night: Rain likely, mainly before 3am. Mostly cloudy, with a low around 31. Southwest wind around 6 mph. Chance of precipitation is 70%.

    Low: 31 °F

    Rain Likely
    then Chance
    Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 38. West wind 6 to 9 mph, with gusts as high as 21 mph.

    High: 38 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 20. West wind around 6 mph.

    Low: 20 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 32. West wind 6 to 9 mph, with gusts as high as 20 mph.

    High: 32 °F

    Sunny

  • Friday Night

    Friday Night: A chance of snow after 2am. Partly cloudy, with a low around 20. West wind 3 to 5 mph. Chance of precipitation is 30%.

    Low: 20 °F

    Partly Cloudy
    then Chance
    Snow

Detailed Forecast

Overnight
Mostly clear, with a low around 2. Calm wind.
Tuesday
Increasing clouds, with a high near 28. Calm wind.
Tuesday Night
A chance of snow before 4am, then a slight chance of snow after 5am. Mostly cloudy, with a low around 23. Calm wind. Chance of precipitation is 50%. Little or no snow accumulation expected.
Wednesday
A slight chance of snow before 9am, then rain. High near 43. Calm wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 80%. Little or no snow accumulation expected.
Wednesday Night
Rain likely, mainly before 3am. Mostly cloudy, with a low around 31. Southwest wind around 6 mph. Chance of precipitation is 70%.
Thursday
Mostly sunny, with a high near 38. West wind 6 to 9 mph, with gusts as high as 21 mph.
Thursday Night
Partly cloudy, with a low around 20. West wind around 6 mph.
Friday
Sunny, with a high near 32. West wind 6 to 9 mph, with gusts as high as 20 mph.
Friday Night
A chance of snow after 2am. Partly cloudy, with a low around 20. West wind 3 to 5 mph. Chance of precipitation is 30%.
Saturday
A chance of snow before 1pm. Partly sunny, with a high near 33. West wind 5 to 8 mph. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 17. West wind around 7 mph.
Sunday
Mostly sunny, with a high near 28. West wind 6 to 9 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 13. Northwest wind around 6 mph.
Monday
Sunny, with a high near 27. Northwest wind around 7 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Acton MA
 42.48°N 71.43°W (Elev. 207 ft)
Last Update:
9:58 pm EST Dec 8, 2025
Forecast Valid:
1am EST Dec 9, 2025-6pm EST Dec 15, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation