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.

Fog/Mist

67°F

19°C

Humidity 87%
Wind Speed E 9 mph
Barometer 30.07 in (1018.1 mb)
Dewpoint 63°F (17°C)
Visibility 0.50 mi
Last update 27 Jun 11:54 am EDT
Extended Forecast for

Chelsea MA

  • This Afternoon

    This Afternoon: Isolated showers between 2pm and 3pm. Mostly sunny, with a high near 75. East wind 6 to 8 mph. Chance of precipitation is 20%.

    High: 75 °F

    Isolated
    Showers

  • Tonight

    Tonight: Increasing clouds, with a low around 63. Southeast wind 3 to 6 mph.

    Low: 63 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 74. Light northeast wind becoming east 5 to 9 mph in the morning.

    High: 74 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: A slight chance of showers between 8pm and 11pm. Partly cloudy, with a low around 63. Calm wind. Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 83. Calm wind becoming east 5 to 8 mph in the afternoon.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 67. Light and variable wind becoming south around 5 mph in the evening.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 91. Southwest wind 5 to 10 mph. Chance of precipitation is 30%.

    High: 91 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 71. South wind 7 to 9 mph. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 97. Southwest wind 7 to 9 mph.

    High: 97 °F

    Hot

Detailed Forecast

This Afternoon
Isolated showers between 2pm and 3pm. Mostly sunny, with a high near 75. East wind 6 to 8 mph. Chance of precipitation is 20%.
Tonight
Increasing clouds, with a low around 63. Southeast wind 3 to 6 mph.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 74. Light northeast wind becoming east 5 to 9 mph in the morning.
Sunday Night
A slight chance of showers between 8pm and 11pm. Partly cloudy, with a low around 63. Calm wind. Chance of precipitation is 20%.
Monday
Sunny, with a high near 83. Calm wind becoming east 5 to 8 mph in the afternoon.
Monday Night
Mostly clear, with a low around 67. Light and variable wind becoming south around 5 mph in the evening.
Tuesday
A chance of showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 91. Southwest wind 5 to 10 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 71. South wind 7 to 9 mph. Chance of precipitation is 30%.
Wednesday
Mostly sunny and hot, with a high near 97. Southwest wind 7 to 9 mph.
Wednesday Night
Partly cloudy, with a low around 75. Southwest wind around 7 mph.
Thursday
Mostly sunny and hot, with a high near 102. West wind 6 to 9 mph.
Thursday Night
Partly cloudy, with a low around 75. Northwest wind around 6 mph.
Friday
A chance of showers. Mostly sunny and hot, with a high near 97. North wind 5 to 9 mph becoming east in the afternoon. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chelsea MA
 42.4°N 71.03°W (Elev. 49 ft)
Last Update:
7:48 am EDT Jun 27, 2026
Forecast Valid:
12pm EDT Jun 27, 2026-6pm EDT Jul 3, 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