Dangerous, Record-Breaking Heat to Continue in the Central and Eastern U.S.; Severe Thunderstorms in the Upper Midwest; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will continue across most of the central and eastern U.S this week. Heat indices will exceed 100 degrees. Severe storms will be possible from the northern Plains into the Midwest and Great Lakes regions, as well as across the southern Appalachians Thursday, with the primary threat large to very large hail. Critical fire weather to continue in the Four Corners Region Read More >

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

A Few Clouds

81°F

27°C

Humidity	94%
Wind Speed	Calm
Barometer	30.05 in (1018.4 mb)
Dewpoint	79°F (26°C)
Visibility	10.00 mi
Heat Index	89°F (32°C)
Last update	1 Jul 11:56 pm EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Highland MD

Extreme Heat Warning July 2, 10:00am until July 2, 08:00pm

Extreme Heat Warning July 3, 10:00am until July 3, 08:00pm

Click here for hazard details and duration

Extreme Heat Warning

Overnight
Low: 76 °F
Mostly Clear
Thursday
High: 100 °F
Hot
Thursday Night
Low: 78 °F
Clear
Friday
High: 100 °F
Hot
Friday Night
Low: 77 °F
Mostly Clear
Independence Day
High: 97 °F
Sunny then
Chance
T-storms
Saturday Night
Low: 74 °F
Chance
T-storms
Sunday
High: 94 °F
Mostly Sunny
then Showers
Likely
Sunday Night
Low: 71 °F
Showers
Likely

Detailed Forecast

Overnight

Mostly clear, with a low around 76. Calm wind.

Thursday

Sunny and hot, with a high near 100. Heat index values as high as 107. Calm wind becoming west around 5 mph in the afternoon.

Thursday Night

Clear, with a low around 78. Calm wind.

Friday

Sunny and hot, with a high near 100. Heat index values as high as 108. Calm wind becoming west 5 to 8 mph in the afternoon.

Friday Night

Mostly clear, with a low around 77. Light northwest wind.

Independence Day

A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 97. Chance of precipitation is 40%.

Saturday Night

A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 74. Chance of precipitation is 40%.

Sunday

Showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 94. Chance of precipitation is 70%.

Sunday Night

Showers likely and possibly a thunderstorm before 2am, then a slight chance of showers. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.

Monday

A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 90. Chance of precipitation is 60%.

Monday Night

Showers and thunderstorms likely. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.

Tuesday

A chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 30%.

Tuesday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.

Wednesday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 20%.