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

66°F

19°C

Humidity 84%
Wind Speed NE 14 mph
Barometer 30.09 in (1019.0 mb)
Dewpoint 61°F (16°C)
Visibility 9.00 mi
Last update 31 Jul 3:54 pm EDT
Extended Forecast for

Chelsea MA

  • This Afternoon

    This Afternoon: Showers likely and possibly a thunderstorm. Cloudy, with a steady temperature around 69. Northeast wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 69 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Patchy fog between 8pm and 2am. Low around 62. Northeast wind 7 to 9 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.

    Low: 62 °F

    Heavy Rain
    and Patchy
    Fog

  • Friday

    Friday: Showers likely, mainly before 10am. Cloudy through mid morning, then gradual clearing, with a high near 70. Northeast wind 11 to 14 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 70 °F

    Showers
    Likely then
    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 58. Northeast wind around 6 mph.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 76. North wind around 7 mph becoming east in the afternoon.

    High: 76 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 60. Southeast wind around 5 mph becoming light and variable in the evening.

    Low: 60 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 84. South wind 3 to 7 mph.

    High: 84 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 64. Southwest wind around 7 mph.

    Low: 64 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 88. Southwest wind 5 to 8 mph becoming south in the afternoon.

    High: 88 °F

    Sunny

Detailed Forecast

This Afternoon
Showers likely and possibly a thunderstorm. Cloudy, with a steady temperature around 69. Northeast wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Patchy fog between 8pm and 2am. Low around 62. Northeast wind 7 to 9 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Friday
Showers likely, mainly before 10am. Cloudy through mid morning, then gradual clearing, with a high near 70. Northeast wind 11 to 14 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Mostly clear, with a low around 58. Northeast wind around 6 mph.
Saturday
Sunny, with a high near 76. North wind around 7 mph becoming east in the afternoon.
Saturday Night
Mostly clear, with a low around 60. Southeast wind around 5 mph becoming light and variable in the evening.
Sunday
Sunny, with a high near 84. South wind 3 to 7 mph.
Sunday Night
Mostly clear, with a low around 64. Southwest wind around 7 mph.
Monday
Sunny, with a high near 88. Southwest wind 5 to 8 mph becoming south in the afternoon.
Monday Night
Partly cloudy, with a low around 66. South wind around 6 mph.
Tuesday
Mostly sunny, with a high near 82. Light and variable wind becoming east 5 to 7 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 64. Southeast wind around 6 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 79. East wind 3 to 8 mph.
Wednesday Night
Mostly cloudy, with a low around 64. Southeast wind 3 to 6 mph.
Thursday
Partly sunny, with a high near 79.
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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:
2:27 pm EDT Jul 31, 2025
Forecast Valid:
4pm EDT Jul 31, 2025-6pm EDT Aug 7, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation