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

Hazardous Weather Conditions

Current conditions at

Boston, Logan International Airport (KBOS)

Lat: 42.36°NLon: 71.01°WElev: 20ft.

Mostly Cloudy

30°F

-1°C

Humidity 92%
Wind Speed SW 10 mph
Barometer 30.08 in (1018.4 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 18 Jan 2:54 am EST
Extended Forecast for

Charlestown MA

Winter Weather Advisory January 18, 07:00am until January 19, 07:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Overnight

    Overnight: Mostly cloudy, with a low around 31. Light southwest wind.

    Low: 31 °F

    Mostly Cloudy

  • Sunday

    Sunday: Snow, mainly after 9am. Patchy fog after 9am. High near 38. Light and variable wind becoming southeast around 5 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

    High: 38 °F

    Snow and
    Patchy Fog

  • Sunday Night

    Sunday Night: Snow. Patchy fog before 9pm, then patchy fog after midnight. Patchy freezing fog between 9pm and midnight. Low around 28. Light and variable wind becoming northwest around 6 mph in the evening. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    Low: 28 °F

    Snow and
    Patchy
    Freezing Fog

  • M.L.King Day

    M.L.King Day: Snow showers likely, mainly before 11am. Patchy fog before 10am. Otherwise, partly sunny, with a high near 34. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 34 °F

    Snow Showers
    Likely and
    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 18. Southwest wind 13 to 16 mph.

    Low: 18 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 24. West wind 13 to 16 mph.

    High: 24 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 11. West wind 11 to 16 mph.

    Low: 11 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 32. South wind 6 to 9 mph.

    High: 32 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of snow showers after 11pm. Mostly cloudy, with a low around 26. Southwest wind around 7 mph. Chance of precipitation is 30%.

    Low: 26 °F

    Chance Snow
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 31. Light southwest wind.
Sunday
Snow, mainly after 9am. Patchy fog after 9am. High near 38. Light and variable wind becoming southeast around 5 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Sunday Night
Snow. Patchy fog before 9pm, then patchy fog after midnight. Patchy freezing fog between 9pm and midnight. Low around 28. Light and variable wind becoming northwest around 6 mph in the evening. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
M.L.King Day
Snow showers likely, mainly before 11am. Patchy fog before 10am. Otherwise, partly sunny, with a high near 34. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Monday Night
Partly cloudy, with a low around 18. Southwest wind 13 to 16 mph.
Tuesday
Mostly sunny, with a high near 24. West wind 13 to 16 mph.
Tuesday Night
Mostly clear, with a low around 11. West wind 11 to 16 mph.
Wednesday
Mostly sunny, with a high near 32. South wind 6 to 9 mph.
Wednesday Night
A chance of snow showers after 11pm. Mostly cloudy, with a low around 26. Southwest wind around 7 mph. Chance of precipitation is 30%.
Thursday
A chance of snow showers before 10am. Partly sunny, with a high near 38. Southwest wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 18. West wind around 8 mph.
Friday
Mostly sunny, with a high near 29. West wind 7 to 9 mph.
Friday Night
Mostly cloudy, with a low around 22. Southwest wind around 6 mph.
Saturday
A chance of snow showers. Mostly cloudy, with a high near 32. Northwest wind 6 to 9 mph. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Charlestown MA
 42.36°N 71.07°W (Elev. 13 ft)
Last Update:
2:21 am EST Jan 18, 2026
Forecast Valid:
3am EST Jan 18, 2026-6pm EST Jan 24, 2026
 
Forecast Discussion
 
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Additional Resources

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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