Lala Approaching Hawaii; Flash Flooding Risks; Excessive Heat

Lala, may become a hurricane, is expected to impact Hawaii this weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians continues, with the threat shifting toward the mid-Atlantic later this weekend. Record heat continues for areas of the South. Read More >

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Fair

74°F

23°C

Humidity	70%
Wind Speed	E 6 mph
Barometer	30.18 in
Dewpoint	64°F (18°C)
Visibility	10.00 mi
Last update	15 Aug 9:55 am EDT

More Information:

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

Extended Forecast for

Unionville PA

Today
High: 85 °F
Sunny
Tonight
Low: 68 °F
Partly Cloudy
then Patchy
Fog
Sunday
High: 79 °F
Chance
Showers then
Heavy Rain
Sunday Night
Low: 68 °F
Heavy Rain
Monday
High: 85 °F
Chance
Showers then
Mostly Sunny
Monday Night
Low: 66 °F
Mostly Clear
Tuesday
High: 83 °F
Sunny
Tuesday Night
Low: 63 °F
Mostly Clear
Wednesday
High: 85 °F
Sunny

Detailed Forecast

Today

Sunny, with a high near 85. North wind around 5 mph.

Tonight

Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 68. Calm wind becoming southeast around 5 mph.

Sunday

Showers and thunderstorms likely before 3pm, then showers and possibly a thunderstorm between 3pm and 5pm, then a chance of showers and thunderstorms after 5pm. Some of the storms could produce heavy rainfall. High near 79. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Sunday Night

Showers and thunderstorms likely before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Some of the storms could produce heavy rainfall. Low around 68. South wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Monday

A chance of showers before 8am. Mostly sunny, with a high near 85. Northwest wind 5 to 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Monday Night

Mostly clear, with a low around 66.

Tuesday

Sunny, with a high near 83.

Tuesday Night

Mostly clear, with a low around 63.

Wednesday

Sunny, with a high near 85.

Wednesday Night

A chance of showers after 2am. Partly cloudy, with a low around 67. Chance of precipitation is 30%.

Thursday

A chance of showers. Mostly sunny, with a high near 84. Chance of precipitation is 40%.