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

78°F

26°C

Humidity 42%
Wind Speed NW 17 G 32 mph
Barometer 29.62 in (1003.1 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 20 Jun 2:54 pm EDT
Extended Forecast for

Chelsea MA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 82. West wind around 15 mph, with gusts as high as 28 mph.

    High: 82 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 62. West wind 5 to 9 mph.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: A chance of showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 83. West wind 5 to 7 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Sunny then
    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy during the early evening, then becoming clear, with a low around 62. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: Showers likely, mainly after 2pm. Partly sunny, with a high near 79. Calm wind becoming south 5 to 9 mph in the afternoon. Chance of precipitation is 60%.

    High: 79 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 2am, then showers likely. Low around 63. Southeast wind 8 to 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 90%.

    Low: 63 °F

    Showers

  • Tuesday

    Tuesday: A chance of showers before 8am. Mostly sunny, with a high near 82. Northwest wind around 8 mph. Chance of precipitation is 30%.

    High: 82 °F

    Chance
    Showers then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 64. Northwest wind 3 to 5 mph.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 84. Northwest wind 3 to 8 mph.

    High: 84 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 82. West wind around 15 mph, with gusts as high as 28 mph.
Tonight
Mostly clear, with a low around 62. West wind 5 to 9 mph.
Sunday
A chance of showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 83. West wind 5 to 7 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy during the early evening, then becoming clear, with a low around 62. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Showers likely, mainly after 2pm. Partly sunny, with a high near 79. Calm wind becoming south 5 to 9 mph in the afternoon. Chance of precipitation is 60%.
Monday Night
Showers and possibly a thunderstorm before 2am, then showers likely. Low around 63. Southeast wind 8 to 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 90%.
Tuesday
A chance of showers before 8am. Mostly sunny, with a high near 82. Northwest wind around 8 mph. Chance of precipitation is 30%.
Tuesday Night
Mostly clear, with a low around 64. Northwest wind 3 to 5 mph.
Wednesday
Sunny, with a high near 84. Northwest wind 3 to 8 mph.
Wednesday Night
Mostly clear, with a low around 64. South wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 83. Calm wind becoming southeast 5 to 9 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 64. South wind 3 to 6 mph.
Friday
A chance of showers. Partly sunny, with a high near 82. Light southeast wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 40%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 65. Southeast wind around 5 mph becoming light and variable after midnight. Chance of precipitation is 30%.
Saturday
A chance of showers. Partly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
Chelsea MA
 42.4°N 71.03°W (Elev. 49 ft)
Last Update:
12:35 pm EDT Jun 20, 2026
Forecast Valid:
3pm EDT Jun 20, 2026-6pm EDT Jun 27, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation