Dangerous heat and humidity from the central U.S. to East Coast this weekend

Hot and very humid conditions will push the heat index to well over 100 degrees across a large portion of the central and eastern U.S. Excessive Heat Warnings and Heat Advisories are in effect for much of the Plains, Miss. Valley, Midwest, Ohio Valley, Mid-Atlantic and southern states. Be very cautious if you must do outdoor activities in these areas during the afternoon and evening this weekend. Read More >

Current conditions at

Boston, Logan International Airport (KBOS)

Lat: 42.36°NLon: 71.01°WElev: 20ft.

Mostly Cloudy

27°C

80°F

Humidity 51%
Wind Speed Calm
Barometer 1006.5 mb (29.73 in)
Dewpoint 16°C (60°F)
Visibility 16 km
Heat Index27°C (81°F)
Last update 23 Jul 6:54 pm EDT
Extended Forecast for

Cambridge MA

Severe T-storm Watch until July 23, 10:00pm
Severe T-storm Warning until July 23, 08:00pm
Click here for hazard details and duration
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  •  
    Severe T-storm Watch until July 23, 10:00pm
    Severe T-storm Warning until July 23, 08:00pm

    NOW: Multiple
    hazards in effect

    Click HERE for Details

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 11pm. Some storms could be severe, with large hail and damaging winds.  Partly cloudy, with a low around 21. Northwest wind 11 to 14 km/h.  Chance of precipitation is 60%. New precipitation amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.

    Severe
    Thunderstorms
    then Mostly
    Clear

    Low: 21 °C

  • Sunday

    Sunday: Sunny, with a high near 31. Northwest wind 10 to 13 km/h becoming northeast in the afternoon.

    Sunny

    High: 31 °C

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 20. Southeast wind 5 to 11 km/h becoming southwest after midnight.

    Partly Cloudy

    Low: 20 °C

  • Monday

    Monday: A slight chance of showers between 10am and noon, then a chance of showers and thunderstorms after noon.  Partly sunny, with a high near 34. Light south wind increasing to 11 to 16 km/h in the morning.  Chance of precipitation is 40%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.

    Slight Chance
    Showers then
    Chance
    T-storms

    High: 34 °C

  • Monday
    Night

    Monday Night: A chance of showers and thunderstorms, mainly before midnight. Some of the storms could produce gusty winds and heavy rain.  Mostly cloudy, with a low around 23. West wind 8 to 16 km/h.  Chance of precipitation is 40%.

    Heavy Rain

    Low: 23 °C

  • Tuesday

    Tuesday: Mostly sunny, with a high near 34.

    Mostly Sunny

    High: 34 °C

  • Tuesday
    Night

    Tuesday Night: Mostly clear, with a low around 22.

    Mostly Clear

    Low: 22 °C

  • Wednesday

    Wednesday: Mostly sunny, with a high near 31.

    Mostly Sunny

    High: 31 °C

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly before 11pm. Some storms could be severe, with large hail and damaging winds. Partly cloudy, with a low around 21. Northwest wind 11 to 14 km/h. Chance of precipitation is 60%. New precipitation amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.
Sunday
Sunny, with a high near 31. Northwest wind 10 to 13 km/h becoming northeast in the afternoon.
Sunday Night
Partly cloudy, with a low around 20. Southeast wind 5 to 11 km/h becoming southwest after midnight.
Monday
A slight chance of showers between 10am and noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 34. Light south wind increasing to 11 to 16 km/h in the morning. Chance of precipitation is 40%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.
Monday Night
A chance of showers and thunderstorms, mainly before midnight. Some of the storms could produce gusty winds and heavy rain. Mostly cloudy, with a low around 23. West wind 8 to 16 km/h. Chance of precipitation is 40%.
Tuesday
Mostly sunny, with a high near 34.
Tuesday Night
Mostly clear, with a low around 22.
Wednesday
Mostly sunny, with a high near 31.
Wednesday Night
Partly cloudy, with a low around 21.
Thursday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 31. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 21. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 31. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 20. Chance of precipitation is 30%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 28. Chance of precipitation is 30%.
Click Map For Forecast
Point Forecast:
Cambridge MA
 42.37°N 71.13°W (Elev. 1 m)
6:49 pm EDT Jul 23, 2016
7pm EDT Jul 23, 2016-6pm EDT Jul 30, 2016
 
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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