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

Dangerous Heat in the East; Critical Fire Weather in the Southwest

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Heat is likely to continue across the eastern U.S. through the Independence Day holiday weekend. Critical fire weather conditions will continue today and likely Tuesday across portions of the Four Corners and northern High Plains. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Overcast

83°F

28°C

Humidity 55%
Wind Speed SE 6 mph
Barometer 30.13 in (1021.0 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 29 Jun 6:56 pm EDT
Extended Forecast for

Rossmoor MD

  • Tonight

    Tonight: Mostly clear, with a low around 68. Southeast wind around 5 mph becoming calm after midnight.

    Low: 68 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 89. Light southwest wind becoming south 5 to 9 mph in the morning.

    High: 89 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 69. South wind 5 to 7 mph.

    Low: 69 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 96. Heat index values as high as 104. Southwest wind around 6 mph.

    High: 96 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75. Southwest wind around 6 mph.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 99.

    High: 99 °F

    Hot

  • Thursday Night

    Thursday Night: Clear, with a low around 77.

    Low: 77 °F

    Clear

  • Friday

    Friday: A slight chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 102. Chance of precipitation is 20%.

    High: 102 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 76. Chance of precipitation is 20%.

    Low: 76 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 68. Southeast wind around 5 mph becoming calm after midnight.
Tuesday
Sunny, with a high near 89. Light southwest wind becoming south 5 to 9 mph in the morning.
Tuesday Night
Mostly clear, with a low around 69. South wind 5 to 7 mph.
Wednesday
Sunny, with a high near 96. Heat index values as high as 104. Southwest wind around 6 mph.
Wednesday Night
Mostly clear, with a low around 75. Southwest wind around 6 mph.
Thursday
Sunny and hot, with a high near 99.
Thursday Night
Clear, with a low around 77.
Friday
A slight chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 102. Chance of precipitation is 20%.
Friday Night
A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 76. Chance of precipitation is 20%.
Independence Day
Showers likely and possibly a thunderstorm, mainly after 2pm. Mostly sunny and hot, with a high near 100. Chance of precipitation is 60%.
Saturday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 74. Chance of precipitation is 60%.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 95. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 93. Chance of precipitation is 50%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Rossmoor MD
 39.09°N 77.08°W (Elev. 440 ft)
Last Update:
4:53 pm EDT Jun 29, 2026
Forecast Valid:
7pm EDT Jun 29, 2026-6pm EDT Jul 6, 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