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.

A Few Clouds

72°F

22°C

Humidity 53%
Wind Speed N 7 mph
Barometer 30.14 in (1020.5 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 15 Aug 8:54 am EDT
Extended Forecast for

Chelsea MA

  • Today

    Today: Mostly sunny, with a high near 79. North wind 7 to 9 mph becoming east in the afternoon.

    High: 79 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 62. Calm wind becoming west around 5 mph after midnight.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 81. North wind 5 to 13 mph becoming southeast in the afternoon.

    High: 81 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Showers likely, mainly after 3am. Increasing clouds, with a low around 66. South wind 7 to 9 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 66 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Monday

    Monday: Showers likely, mainly before 1pm. Mostly cloudy, with a high near 78. East wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    High: 78 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 65. East wind around 5 mph becoming light and variable in the evening.

    Low: 65 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81. North wind 5 to 7 mph becoming east in the afternoon.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 65. Calm wind.

    Low: 65 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86. Calm wind becoming south 5 to 9 mph in the afternoon.

    High: 86 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 79. North wind 7 to 9 mph becoming east in the afternoon.
Tonight
Mostly clear, with a low around 62. Calm wind becoming west around 5 mph after midnight.
Sunday
Mostly sunny, with a high near 81. North wind 5 to 13 mph becoming southeast in the afternoon.
Sunday Night
Showers likely, mainly after 3am. Increasing clouds, with a low around 66. South wind 7 to 9 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 78. East wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Monday Night
Mostly cloudy, with a low around 65. East wind around 5 mph becoming light and variable in the evening.
Tuesday
Mostly sunny, with a high near 81. North wind 5 to 7 mph becoming east in the afternoon.
Tuesday Night
Mostly clear, with a low around 65. Calm wind.
Wednesday
Sunny, with a high near 86. Calm wind becoming south 5 to 9 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 69. Southwest wind around 7 mph.
Thursday
A chance of showers. Partly sunny, with a high near 86. Southwest wind 7 to 10 mph. Chance of precipitation is 30%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 64. Northwest wind around 6 mph. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 79. North wind 7 to 10 mph becoming east in the afternoon.
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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:
6:32 am EDT Aug 15, 2026
Forecast Valid:
9am EDT Aug 15, 2026-6pm EDT Aug 21, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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