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.

Mostly Cloudy

64°F

18°C

Humidity 87%
Wind Speed E 8 mph
Barometer 30.06 in (1017.9 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 30 Sep 2:54 pm EDT
Extended Forecast for

Chelsea MA

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 58. Light and variable wind becoming southwest around 5 mph after midnight.

    Low: 58 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 7am. Otherwise, partly sunny, with a high near 78. Southwest wind 5 to 9 mph.

    High: 78 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 66. Southwest wind around 7 mph.

    Low: 66 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 79. Southwest wind 7 to 11 mph.

    High: 79 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers before 2am. Mostly cloudy, with a low around 57. West wind around 8 mph. Chance of precipitation is 40%.

    Low: 57 °F

    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 66. Northwest wind 6 to 8 mph becoming northeast in the afternoon.

    High: 66 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 49. Light north wind.

    Low: 49 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 62. East wind 5 to 8 mph.

    High: 62 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 51. Southeast wind around 5 mph becoming light and variable in the evening.

    Low: 51 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 58. Light and variable wind becoming southwest around 5 mph after midnight.
Thursday
Patchy fog before 7am. Otherwise, partly sunny, with a high near 78. Southwest wind 5 to 9 mph.
Thursday Night
Partly cloudy, with a low around 66. Southwest wind around 7 mph.
Friday
Mostly sunny, with a high near 79. Southwest wind 7 to 11 mph.
Friday Night
A chance of showers before 2am. Mostly cloudy, with a low around 57. West wind around 8 mph. Chance of precipitation is 40%.
Saturday
Sunny, with a high near 66. Northwest wind 6 to 8 mph becoming northeast in the afternoon.
Saturday Night
Mostly clear, with a low around 49. Light north wind.
Sunday
Sunny, with a high near 62. East wind 5 to 8 mph.
Sunday Night
Partly cloudy, with a low around 51. Southeast wind around 5 mph becoming light and variable in the evening.
Monday
Mostly sunny, with a high near 67. Southwest wind 5 to 9 mph.
Monday Night
Mostly clear, with a low around 44. Northwest wind around 8 mph.
Tuesday
Sunny, with a high near 56. Northwest wind around 10 mph.
Tuesday Night
Clear, with a low around 42. Northwest wind 3 to 5 mph.
Wednesday
Sunny, with a high near 59. West wind 5 to 7 mph becoming south in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chelsea MA
 42.4°N 71.03°W (Elev. 49 ft)
Last Update:
2:45 pm EDT Sep 30, 2026
Forecast Valid:
3pm EDT Sep 30, 2026-6pm EDT Oct 7, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation