Dangerous Heat and Humidity Building from the Plains to the East Coast

A strengthening ridge of high pressure will produce much above average temperatures from the Plains to the East Coast, a true summer heat wave. Highs in the 90s and triple digits combined w/ humidity and dewpoints surging into the upper 70s, if not low 80s, will create heat indices as high as 110 to 115 through this weekend. Air quality will likely be poor due to haze and little air circulation. Read More >

Current conditions at

Baltimore, Baltimore-Washington International Airport (KBWI)

Lat: 39.17°NLon: 76.68°WElev: 135ft.

Mostly Cloudy

76°F

24°C

Humidity 97%
Wind Speed Calm
Barometer 29.87 in (1011.5 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index75°F (24°C)
Last update 18 Jul 6:54 am EDT
Extended Forecast for

Severn MD

Excessive Heat Watch July 19, 10:00am until July 21, 10:00pm
Click here for hazard details and duration
Excessive Heat Watch
  • Today

    Today: A slight chance of showers, then showers likely and possibly a thunderstorm after 11am. Some of the storms could produce heavy rain.  Mostly cloudy, with a high near 93. Heat index values as high as 101. Calm wind becoming west around 6 mph in the morning.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Heavy Rain

    High: 93 °F

  • Tonight

    Tonight: Isolated showers and thunderstorms before 11pm.  Mostly cloudy, then gradually becoming mostly clear, with a low around 75. Southwest wind 3 to 5 mph.  Chance of precipitation is 20%.

    Isolated
    T-storms then
    Partly Cloudy

    Low: 75 °F

  • Friday

    Friday: Sunny and hot, with a high near 97. Heat index values as high as 105. Southwest wind 3 to 6 mph.

    Hot

    High: 97 °F

  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 79. Southwest wind 3 to 5 mph.

    Partly Cloudy

    Low: 79 °F

  • Saturday

    Saturday: Sunny and hot, with a high near 100. West wind 3 to 6 mph.

    Hot

    High: 100 °F

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around 78.

    Partly Cloudy

    Low: 78 °F

  • Sunday

    Sunday: A chance of showers and thunderstorms.  Mostly sunny, with a high near 96. Chance of precipitation is 40%.

    Chance
    T-storms

    High: 96 °F

  • Sunday
    Night

    Sunday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 79. Chance of precipitation is 50%.

    Chance
    T-storms

    Low: 79 °F

  • Monday

    Monday: Showers and thunderstorms likely.  Mostly cloudy, with a high near 91. Chance of precipitation is 70%.

    T-storms
    Likely

    High: 91 °F

Detailed Forecast

Today
A slight chance of showers, then showers likely and possibly a thunderstorm after 11am. Some of the storms could produce heavy rain. Mostly cloudy, with a high near 93. Heat index values as high as 101. Calm wind becoming west around 6 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Isolated showers and thunderstorms before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 75. Southwest wind 3 to 5 mph. Chance of precipitation is 20%.
Friday
Sunny and hot, with a high near 97. Heat index values as high as 105. Southwest wind 3 to 6 mph.
Friday Night
Partly cloudy, with a low around 79. Southwest wind 3 to 5 mph.
Saturday
Sunny and hot, with a high near 100. West wind 3 to 6 mph.
Saturday Night
Partly cloudy, with a low around 78.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 96. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 79. Chance of precipitation is 50%.
Monday
Showers and thunderstorms likely. Mostly cloudy, with a high near 91. Chance of precipitation is 70%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 70. Chance of precipitation is 40%.
Tuesday
A chance of showers. Partly sunny, with a high near 87. Chance of precipitation is 40%.
Tuesday Night
Mostly cloudy, with a low around 67.
Wednesday
Mostly sunny, with a high near 86.
Click Map For Forecast
Point Forecast:
Severn MD
 39.14°N 76.69°W (Elev. 148 ft)
6:43 am EDT Jul 18, 2019
7am EDT Jul 18, 2019-6pm EDT Jul 24, 2019
 
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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