National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Boston, Logan International Airport (KBOS)

Lat: 42.36°NLon: 71.01°WElev: 20ft.

Partly Cloudy

90°F

32°C

Humidity 37%
Wind Speed NW 16 G 37 mph
Barometer 29.83 in (1010.0 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 20 May 4:54 pm EDT
Extended Forecast for

Boston MA

Heat Advisory May 20, 05:28pm until May 20, 08:00pm
Click here for hazard details and duration
...
  •  
    Heat Advisory May 20, 05:28pm until May 20, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • Tonight

    Low: 55 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Mostly cloudy, with a high near 65. North wind around 6 mph becoming east in the afternoon.

    High: 65 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, then gradually becoming clear, with a low around 46. Calm wind becoming north around 5 mph.

    Low: 46 °F

    Decreasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 66. Light and variable wind becoming east 5 to 8 mph in the morning.

    High: 66 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 50. South wind around 5 mph becoming calm in the evening.

    Low: 50 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of showers after 2pm. Mostly cloudy, with a high near 64. Calm wind becoming east 5 to 8 mph in the morning. Chance of precipitation is 20%.

    High: 64 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 48. Southeast wind 5 to 7 mph. Chance of precipitation is 60%.

    Low: 48 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely, mainly before 3pm. Mostly cloudy, with a high near 59. East wind around 11 mph. Chance of precipitation is 70%.

    High: 59 °F

    Showers
    Likely

Detailed Forecast

Tonight
A slight chance of showers between 11pm and 3am. Mostly cloudy, with a low around 55. West wind 6 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Thursday
Mostly cloudy, with a high near 65. North wind around 6 mph becoming east in the afternoon.
Thursday Night
Mostly cloudy, then gradually becoming clear, with a low around 46. Calm wind becoming north around 5 mph.
Friday
Sunny, with a high near 66. Light and variable wind becoming east 5 to 8 mph in the morning.
Friday Night
Mostly cloudy, with a low around 50. South wind around 5 mph becoming calm in the evening.
Saturday
A slight chance of showers after 2pm. Mostly cloudy, with a high near 64. Calm wind becoming east 5 to 8 mph in the morning. Chance of precipitation is 20%.
Saturday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 48. Southeast wind 5 to 7 mph. Chance of precipitation is 60%.
Sunday
Showers likely, mainly before 3pm. Mostly cloudy, with a high near 59. East wind around 11 mph. Chance of precipitation is 70%.
Sunday Night
A chance of showers. Cloudy, with a low around 49. East wind 5 to 7 mph. Chance of precipitation is 50%.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 69. Northeast wind 3 to 7 mph. Chance of precipitation is 40%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 53. Northwest wind around 6 mph. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 76. Northwest wind 3 to 7 mph.
Tuesday Night
Partly cloudy, with a low around 56. West wind around 5 mph.
Wednesday
Sunny, with a high near 76. Northwest wind 5 to 9 mph becoming north in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Boston MA
 42.36°N 71.07°W (Elev. 13 ft)
Last Update:
2:33 pm EDT May 20, 2026
Forecast Valid:
5pm EDT May 20, 2026-6pm EDT May 27, 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