Widespread Showers in the Eastern US; Severe Thunderstorms in the Plains; Heatwave in the Desert Southwest

Widespread showers and thunderstorms across much of the central and eastern U.S. will produce areas of excessive rainfall, especially in the southern Mid-Atlantic states. Scattered severe thunderstorms are expected from Montana into portions of the central/southern Plains this weekend. A heatwave will build in the Desert Southwest, in parts of Arizona, southeastern California, and southern Nevada. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Overcast

63°F

17°C

Humidity	NA
Wind Speed	Vrbl 5 mph
Barometer	30.12 in (1021.0 mb)
Dewpoint	N/A
Visibility	7.00 mi
Last update	15 Jun 8:56 am EDT

More Information:

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

Extended Forecast for

Ashton-Sandy Spring MD

Today
High: 70 °F
Cloudy then
Showers
Likely
Tonight
Low: 62 °F
Showers
Likely
Monday
High: 70 °F
Chance
Showers
Monday Night
Low: 64 °F
Slight Chance
T-storms then
Chance
Showers
Tuesday
High: 77 °F
Chance
Showers then
Chance
T-storms
Tuesday Night
Low: 69 °F
Chance
T-storms then
Chance
Showers
Wednesday
High: 88 °F
Partly Sunny
then Chance
T-storms
Wednesday Night
Low: 73 °F
Chance
T-storms then
Partly Cloudy
Juneteenth
High: 90 °F
Mostly Sunny
then Chance
T-storms

Detailed Forecast

Today

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3pm. Cloudy, with a high near 70. East wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers and thunderstorms likely. Cloudy, with a low around 62. East wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Monday

A chance of showers, with thunderstorms also possible after 2pm. Cloudy, with a high near 70. East wind around 7 mph. Chance of precipitation is 40%.

Monday Night

A slight chance of showers and thunderstorms, then a chance of showers after 8pm. Cloudy, with a low around 64. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

Tuesday

A chance of showers before 8am, then a chance of showers and thunderstorms after 2pm. Cloudy, with a high near 77. Southeast wind 3 to 6 mph. Chance of precipitation is 50%.

Tuesday Night

A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 69. Chance of precipitation is 50%.

Wednesday

A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 30%.

Wednesday Night

A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 73. Chance of precipitation is 30%.

Juneteenth

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 50%.

Thursday Night

A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 68. Chance of precipitation is 30%.

Friday

Sunny, with a high near 85.

Friday Night

Mostly clear, with a low around 65.