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

Boston, Logan International Airport (KBOS)

Lat: 42.36°NLon: 71.01°WElev: 20ft.

Overcast

45°F

7°C

Humidity 86%
Wind Speed SW 6 mph
Barometer 29.71 in (1005.9 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 21 Mar 4:54 am EDT
Extended Forecast for

Charlestown MA

  • Today

    Today: Mostly cloudy through mid morning, then gradual clearing, with a high near 49. Northwest wind 6 to 13 mph, with gusts as high as 24 mph.

    High: 49 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 38. Northwest wind around 6 mph becoming calm in the evening.

    Low: 38 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A chance of rain and snow before 9am, then rain likely. Cloudy, with a high near 51. Southeast wind 6 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 51 °F

    Chance
    Rain/Snow
    then Rain
    Likely

  • Sunday Night

    Sunday Night: Rain likely before 5am, then rain and snow likely. Cloudy, with a low around 35. West wind 5 to 7 mph becoming north after midnight. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 35 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Monday

    Monday: Rain and snow likely, becoming all snow after 7am. Cloudy, with a high near 41. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 41 °F

    Rain/Snow
    Likely then
    Chance Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 29. Northwest wind around 7 mph.

    Low: 29 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 45. Northwest wind around 7 mph.

    High: 45 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 33. Southwest wind around 9 mph.

    Low: 33 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 51. West wind 10 to 13 mph.

    High: 51 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy through mid morning, then gradual clearing, with a high near 49. Northwest wind 6 to 13 mph, with gusts as high as 24 mph.
Tonight
Increasing clouds, with a low around 38. Northwest wind around 6 mph becoming calm in the evening.
Sunday
A chance of rain and snow before 9am, then rain likely. Cloudy, with a high near 51. Southeast wind 6 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 60%. Little or no snow accumulation expected.
Sunday Night
Rain likely before 5am, then rain and snow likely. Cloudy, with a low around 35. West wind 5 to 7 mph becoming north after midnight. Chance of precipitation is 70%. Little or no snow accumulation expected.
Monday
Rain and snow likely, becoming all snow after 7am. Cloudy, with a high near 41. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Monday Night
Mostly cloudy, with a low around 29. Northwest wind around 7 mph.
Tuesday
Mostly sunny, with a high near 45. Northwest wind around 7 mph.
Tuesday Night
Mostly cloudy, with a low around 33. Southwest wind around 9 mph.
Wednesday
Partly sunny, with a high near 51. West wind 10 to 13 mph.
Wednesday Night
Mostly cloudy, with a low around 33. West wind around 9 mph.
Thursday
A chance of rain and snow. Mostly cloudy, with a high near 49. South wind 8 to 10 mph. Chance of precipitation is 30%.
Thursday Night
Rain and snow likely. Mostly cloudy, with a low around 37. Southwest wind around 10 mph. Chance of precipitation is 60%.
Friday
Rain and snow likely. Partly sunny, with a high near 49. Northwest wind 10 to 13 mph. Chance of precipitation is 60%.
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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:
2:33 am EDT Mar 21, 2026
Forecast Valid:
4am EDT Mar 21, 2026-6pm EDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation