Dangerous Heat and Humidity Through Saturday

Dangerously hot and humid conditions are expected to build through Saturday. Additionally, there will be a threat of thunderstorms Friday through Sunday. View this briefing for details. Read More >

Hazardous Weather Conditions

Current conditions at

Pottstown, Pottstown Limerick Airport (KPTW)

Lat: 40.24°NLon: 75.55°WElev: 288ft.

100°F

38°C

Humidity	39%
Wind Speed	NA
Barometer	30.03 in (1016.3 mb)
Dewpoint	71°F (22°C)
Visibility	NA
Heat Index	108°F (42°C)
Last update	2 Jul 1:54 pm EDT

More Information:

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

Extended Forecast for

2 Miles S Collegeville PA

Extreme Heat Warning July 2, 02:27pm until July 4, 08:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning July 2, 02:27pm until July 4, 08:00pm
NOW until 8:00pm Sat
Extreme Heat Warning
This Afternoon
High: 102 °F
Hot
Tonight
Low: 78 °F
Mostly Clear
Friday
High: 101 °F
Hot
Friday Night
Low: 79 °F
Increasing
Clouds
Independence Day
High: 98 °F
Mostly Sunny
then Chance
T-storms
Saturday Night
Low: 74 °F
Chance
T-storms then
Chance
Showers
Sunday
High: 89 °F
Partly Sunny
then Chance
T-storms
Sunday Night
Low: 69 °F
Showers
Likely

Detailed Forecast

This Afternoon

Sunny and hot, with a high near 102. Heat index values as high as 109. West wind 10 to 15 mph.

Tonight

Mostly clear, with a low around 78. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

Friday

Sunny and hot, with a high near 101. Heat index values as high as 109. Northwest wind 5 to 15 mph.

Friday Night

Increasing clouds, with a low around 79. West wind around 5 mph becoming calm.

Independence Day

A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 98. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 30%.

Saturday Night

A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 74. Chance of precipitation is 40%. New precipitation 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 89. Chance of precipitation is 50%.

Sunday Night

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8pm. Mostly cloudy, with a low around 69. Chance of precipitation is 70%.

Monday

Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.

Monday Night

Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.

Tuesday

A chance of showers. Partly sunny, with a high near 82. Chance of precipitation is 40%.

Tuesday Night

Mostly cloudy, with a low around 64.

Wednesday

Mostly sunny, with a high near 86.