Thunderstorms and Heavy Rainfall in the Mid-Atlantic and Southern New England; Fire Weather Concerns in the West

Heavy rain and isolated severe thunderstorms may continue to bring flash and urban flooding to the northern Mid-Atlantic and southern New England through tonight. Isolated dry thunderstorms will continue to bring a fire weather threat to the northwestern Great Basin through Friday. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Overcast

66°F

19°C

Humidity	NA
Wind Speed	Vrbl 3 mph
Barometer	30.06 in (1018.9 mb)
Dewpoint	N/A
Visibility	7.00 mi
Last update	1 Aug 3:56 am EDT

More Information:

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

Extended Forecast for

Olney MD

Overnight
Low: 65 °F
Slight Chance
Showers
Friday
High: 75 °F
Slight Chance
Showers then
Partly Sunny
Friday Night
Low: 60 °F
Decreasing
Clouds
Saturday
High: 79 °F
Sunny
Saturday Night
Low: 60 °F
Mostly Clear
Sunday
High: 82 °F
Mostly Sunny
Sunday Night
Low: 60 °F
Partly Cloudy
Monday
High: 85 °F
Sunny
Monday Night
Low: 64 °F
Partly Cloudy

Detailed Forecast

Overnight

A slight chance of showers. Cloudy, with a low around 65. North wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

Friday

A slight chance of showers before 9am. Mostly cloudy, with a high near 75. North wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

Friday Night

Mostly cloudy, then gradually becoming clear, with a low around 60. North wind around 8 mph.

Saturday

Sunny, with a high near 79. North wind 7 to 9 mph.

Saturday Night

Mostly clear, with a low around 60. Northeast wind around 5 mph becoming calm in the evening.

Sunday

Mostly sunny, with a high near 82.

Sunday Night

Partly cloudy, with a low around 60.

Monday

Sunny, with a high near 85.