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.

A Few Clouds

71°F

22°C

Humidity 84%
Wind Speed SW 8 mph
Barometer 29.89 in (1012.0 mb)
Dewpoint 66°F (19°C)
Visibility 7.00 mi
Last update 20 May 1:54 am EDT
Extended Forecast for

Cambridge MA

Heat Advisory May 20, 02:10am until May 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory May 20, 02:10am until May 20, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • Overnight

    Low: 71 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers, mainly between 2pm and 4pm. Mostly sunny and hot, with a high near 92. Southwest wind 8 to 14 mph. Chance of precipitation is 30%.

    High: 92 °F

    Sunny then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers between 1am and 2am. Increasing clouds, with a low around 57. North wind 6 to 8 mph. Chance of precipitation is 20%.

    Low: 57 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 68. North wind around 7 mph.

    High: 68 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 49. Light north wind.

    Low: 49 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 69. Calm wind becoming southeast 5 to 7 mph in the afternoon.

    High: 69 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 50. South wind 5 to 7 mph becoming calm after midnight.

    Low: 50 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers. Mostly cloudy, with a high near 62. Calm wind becoming southeast 5 to 8 mph in the morning. Chance of precipitation is 40%.

    High: 62 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 71. Southwest wind around 6 mph.
Wednesday
A chance of showers, mainly between 2pm and 4pm. Mostly sunny and hot, with a high near 92. Southwest wind 8 to 14 mph. Chance of precipitation is 30%.
Wednesday Night
A slight chance of showers between 1am and 2am. Increasing clouds, with a low around 57. North wind 6 to 8 mph. Chance of precipitation is 20%.
Thursday
Partly sunny, with a high near 68. North wind around 7 mph.
Thursday Night
Partly cloudy, with a low around 49. Light north wind.
Friday
Mostly sunny, with a high near 69. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 50. South wind 5 to 7 mph becoming calm after midnight.
Saturday
A chance of showers. Mostly cloudy, with a high near 62. Calm wind becoming southeast 5 to 8 mph in the morning. Chance of precipitation is 40%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 48. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.
Sunday
A chance of showers. Mostly cloudy, with a high near 61. East wind 5 to 10 mph. Chance of precipitation is 50%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 49. East wind 3 to 6 mph. Chance of precipitation is 50%.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 67. North wind 3 to 7 mph. Chance of precipitation is 40%.
Monday Night
Mostly cloudy, with a low around 52. Northeast wind around 5 mph becoming calm in the evening.
Tuesday
Partly sunny, with a high near 72. Calm wind becoming northeast 5 to 7 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cambridge MA
 42.37°N 71.13°W (Elev. 3 ft)
Last Update:
1:01 am EDT May 20, 2026
Forecast Valid:
2am EDT May 20, 2026-6pm EDT May 26, 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