Areas of Severe Thunderstorms, Excessive Rainfall, and Extreme Heat Wednesday

In the Upper Midwest, heavy to excessive rain may bring flash and urban flooding through Wednesday. Scattered severe thunderstorms capable of large hail and damaging wind gusts are possible from the central High Plains into the Upper Midwest Wednesday. Extreme heat is ongoing over the Desert Southwest through Thursday. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Overcast with Haze

72°F

22°C

Humidity	NA
Wind Speed	Vrbl 3 mph
Barometer	30.05 in (1018.4 mb)
Dewpoint	N/A
Visibility	5.00 mi
Last update	8 Jul 12:56 am EDT

More Information:

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

Extended Forecast for

2 Miles ESE Potomac MD

Overnight
Low: 70 °F
Scattered
Showers and
Patchy Fog
Wednesday
High: 82 °F
Chance
Showers and
Patchy Fog
then Partly
Sunny
Wednesday Night
Low: 71 °F
Chance
Showers then
Showers
Likely
Thursday
High: 86 °F
Showers
Likely then
T-storms
Thursday Night
Low: 70 °F
Showers then
Slight Chance
Showers
Friday
High: 88 °F
Mostly Sunny
then Chance
T-storms
Friday Night
Low: 70 °F
Chance
T-storms
Saturday
High: 85 °F
Chance
Showers then
Chance
T-storms
Saturday Night
Low: 67 °F
Chance
T-storms

Detailed Forecast

Overnight

Scattered showers and thunderstorms. Patchy fog. Otherwise, mostly cloudy, with a low around 70. East wind 3 to 5 mph. Chance of precipitation is 30%.

Wednesday

A chance of showers, mainly before 11am. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 82. East wind 3 to 6 mph. Chance of precipitation is 30%.

Wednesday Night

A chance of showers and thunderstorms, then showers likely after 2am. Mostly cloudy, with a low around 71. Light south wind. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday

Showers likely before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 86. South wind around 6 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night

Showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Low around 70. Southwest wind 3 to 5 mph. Chance of precipitation is 80%.

Friday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 50%.

Friday Night

A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 70. Chance of precipitation is 30%.

Saturday

A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 40%.

Saturday Night

A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.

Sunday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 81. Chance of precipitation is 30%.

Sunday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.

Monday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 84. Chance of precipitation is 20%.

Monday Night

Mostly clear, with a low around 68.

Tuesday

Sunny, with a high near 89.