Thunderstorms and Heavy Rain Across the Southern and Eastern US; Heat and Fire Weather Concerns in the West

Showers and thunderstorms are expected across the southern and eastern US this week, with heavy rain and localized flooding, particularly near the Gulf Coast. Monsoonal moisture will bring rain and potential flooding to parts of the Southwest. Heat and fire weather threats will continue to impact the West. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Partly Cloudy

85°F

29°C

Humidity	77%
Wind Speed	S 5 mph
Barometer	29.92 in (1014.0 mb)
Dewpoint	77°F (25°C)
Visibility	10.00 mi
Heat Index	96°F (36°C)
Last update	30 Jun 9:56 pm EDT

More Information:

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

Extended Forecast for

Gaithersburg MD

Tonight
Low: 74 °F
Scattered
T-storms
Tuesday
High: 89 °F
Slight Chance
T-storms then
Heavy Rain
Tuesday Night
Low: 70 °F
Chance
T-storms
Wednesday
High: 85 °F
Partly Sunny
then Slight
Chance
T-storms
Wednesday Night
Low: 68 °F
Partly Cloudy
Thursday
High: 88 °F
Sunny
Thursday Night
Low: 65 °F
Mostly Clear
Independence Day
High: 87 °F
Sunny
Friday Night
Low: 66 °F
Mostly Clear

Detailed Forecast

Tonight

Scattered showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 74. South wind around 6 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.

Tuesday

Showers and thunderstorms likely before 3pm, then showers and possibly a thunderstorm between 3pm and 5pm, then showers and thunderstorms likely after 5pm. Some of the storms could produce heavy rainfall. High near 89. Southwest wind around 7 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

Tuesday Night

A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 70. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.

Wednesday

A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 85. Northwest wind 3 to 6 mph. Chance of precipitation is 20%.

Wednesday Night

Partly cloudy, with a low around 68. Calm wind.

Thursday

Sunny, with a high near 88.

Thursday Night

Mostly clear, with a low around 65.

Independence Day

Sunny, with a high near 87.

Friday Night

Mostly clear, with a low around 66.

Saturday

Mostly sunny, with a high near 88.