Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Hazardous Weather Conditions

Dense Fog Advisory until March 21, 08:00 AM EDT

Current conditions at

Pottstown, Pottstown Limerick Airport (KPTW)

Lat: 40.24°NLon: 75.55°WElev: 288ft.

Fog

46°F

8°C

Humidity	100%
Wind Speed	Calm
Barometer	29.76 in (1007.6 mb)
Dewpoint	46°F (8°C)
Visibility	0.25 mi
Last update	21 Mar 4:54 am EDT

More Information:

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

Extended Forecast for

Sassamansville PA

Dense Fog Advisory March 21, 05:50am until March 21, 08:00am

Click here for hazard details and duration

...

Dense Fog Advisory March 21, 05:50am until March 21, 08:00am
NOW until 8:00am Sat
Dense Fog Advisory
Today
High: 58 °F
Areas Dense
Fog then
Mostly Sunny
Tonight
Low: 41 °F
Mostly Cloudy
Sunday
High: 72 °F
Mostly Cloudy
then Chance
Showers
Sunday Night
Low: 43 °F
Showers
Monday
High: 50 °F
Showers then
Chance
Showers
Monday Night
Low: 28 °F
Mostly Clear
Tuesday
High: 49 °F
Sunny
Tuesday Night
Low: 33 °F
Mostly Cloudy

Detailed Forecast

Today

Areas of dense fog before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 58. Northwest wind 5 to 10 mph.

Tonight

Mostly cloudy, with a low around 41. Calm wind becoming south around 5 mph after midnight.

Sunday

A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 72. Southwest wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday Night

A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers after 2am. Low around 43. North wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Monday

Showers, mainly before 8am. High near 50. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Monday Night

Mostly clear, with a low around 28.

Tuesday

Sunny, with a high near 49.

Tuesday Night

Mostly cloudy, with a low around 33.

Wednesday

Partly sunny, with a high near 54.

Wednesday Night

Mostly cloudy, with a low around 35.

Thursday

Mostly cloudy, with a high near 57.