Severe Thunderstorms and Heavy Rain from the Plains to the Mid-Atlantic; Ongoing Heat in the South

Severe thunderstorms and showers pose a risk for excessive rain, localized flash flooding, strong gusts and/or large hail across portions of the northern and central Plains, the Lower Missouri to Lower Ohio Valleys, and across the Mid-Atlantic this afternoon and evening. Extreme heat is ongoing over the Desert Southwest and the Southeast U.S.. Read More >

Hazardous Weather Conditions

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Thunderstorm in Vicinity

76°F

24°C

Humidity	97%
Wind Speed	Vrbl 6 mph
Barometer	29.87 in
Dewpoint	75°F (24°C)
Visibility	10.00 mi
Heat Index	75°F (24°C)
Last update	9 Jul 5:35 pm EDT

More Information:

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

Extended Forecast for

Westtown PA

Flood Watch July 9, 05:56pm until July 10, 12:00am

Flash Flood Warning July 9, 05:56pm until July 9, 07:45pm

Click here for hazard details and duration

Flood Watch

Flash Flood Warning

Flood Watch July 9, 05:56pm until July 10, 12:00am
Flash Flood Warning July 9, 05:56pm until July 9, 07:45pm
NOW: Multiple hazards in effect
Click HERE for Details
This Afternoon
High: 82 °F
T-storms
Tonight
Low: 70 °F
T-storms
Likely then
Patchy Fog
Friday
High: 88 °F
Patchy Fog
then Chance
T-storms
Friday Night
Low: 68 °F
Chance
T-storms then
Chance
Showers
Saturday
High: 83 °F
Chance
Showers then
Chance
T-storms
Saturday Night
Low: 65 °F
Chance
T-storms then
Partly Cloudy
Sunday
High: 84 °F
Mostly Sunny
Sunday Night
Low: 63 °F
Partly Cloudy

Detailed Forecast

This Afternoon

Showers and thunderstorms. High near 82. Southwest wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers and thunderstorms likely, mainly before 8pm. Patchy fog after midnight. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 70. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

Friday

A slight chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 88. West wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday

A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 83. North wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday Night

A chance of thunderstorms before 8pm. Partly cloudy, with a low around 65. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday

Mostly sunny, with a high near 84.

Sunday Night

Partly cloudy, with a low around 63.

Monday

Mostly sunny, with a high near 84.

Monday Night

Mostly clear, with a low around 63.

Tuesday

Sunny, with a high near 87.

Tuesday Night

Mostly clear, with a low around 68.