Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Hazardous Weather Conditions

Flood Watch in effect from August 20, 12:00 PM EDT until August 21, 02:00 AM EDT

Current conditions at

Pottstown, Pottstown Limerick Airport (KPTW)

Lat: 40.24°NLon: 75.55°WElev: 288ft.

Fair

67°F

19°C

Humidity	93%
Wind Speed	Calm
Barometer	30.00 in (1015.3 mb)
Dewpoint	65°F (18°C)
Visibility	10.00 mi
Last update	20 Aug 3:54 am EDT

More Information:

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

Extended Forecast for

2 Miles ESE Pottstown Limerick Airport PA

Flood Watch August 20, 12:00pm until August 21, 02:00am

Click here for hazard details and duration

Flood Watch

Today
High: 79 °F
Chance
Showers then
Heavy Rain
Tonight
Low: 61 °F
Heavy Rain
then Mostly
Cloudy
Friday
High: 81 °F
Partly Sunny
then Chance
Showers
Friday Night
Low: 63 °F
Chance
Showers
Saturday
High: 80 °F
Chance
Showers then
Showers
Likely
Saturday Night
Low: 64 °F
Showers
Likely
Sunday
High: 82 °F
Partly Sunny
then Chance
T-storms
Sunday Night
Low: 61 °F
Chance
T-storms then
Mostly Clear
Monday
High: 80 °F
Sunny

Detailed Forecast

Today

A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. Some of the storms could produce heavy rainfall. High near 79. Calm wind becoming east around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Tonight

Showers and thunderstorms likely before 9pm, then a slight chance of showers between 9pm and 10pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 61. North wind around 5 mph becoming calm. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday

A chance of showers after 2pm. Partly sunny, with a high near 81. Northeast wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Friday Night

A chance of showers, mainly before 8pm. Mostly cloudy, with a low around 63. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Saturday

A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 80. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday

A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 40%.

Sunday Night

A chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 61. Chance of precipitation is 30%.

Monday

Sunny, with a high near 80.

Monday Night

Mostly clear, with a low around 59.

Tuesday

Sunny, with a high near 80.

Tuesday Night

Partly cloudy, with a low around 60.