Severe Thunderstorms and Heavy Rainfall Across the Central Plains and Central Appalachians

Severe thunderstorms producing damaging winds, heavy rainfall, hail and possibly a few tornadoes will continue through tonight across portions of Kansas and Oklahoma. Heavy rainfall will persist across the Central Appalachians through tonight, potentially leading to areas of flooding. The severe weather and heavy rainfall threat will shift into the lower Great Lakes on Wednesday. Read More >

Hazardous Weather Conditions

Heat Advisory in effect from June 18, 11:00 AM EDT until June 19, 08:00 PM EDT

Current conditions at

Philadelphia, Northeast Philadelphia Airport (KPNE)

Lat: 40.08°NLon: 75.01°WElev: 118ft.

Overcast

69°F

21°C

Humidity	96%
Wind Speed	SW 3 mph
Barometer	29.95 in (1014.0 mb)
Dewpoint	68°F (20°C)
Visibility	7.00 mi
Last update	18 Jun 4:54 am EDT

More Information:

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

Extended Forecast for

Cornwells PA

Heat Advisory June 18, 11:00am until June 19, 08:00pm

Click here for hazard details and duration

Heat Advisory

Overnight
Low: 68 °F
Chance
Showers and
Patchy Fog
Wednesday
High: 88 °F
Chance
Showers and
Areas Fog
then T-storms
Wednesday Night
Low: 73 °F
T-storms
Likely then
Patchy Fog
Juneteenth
High: 93 °F
Mostly Sunny
then Severe
Thunderstorms
Thursday Night
Low: 67 °F
Severe
Thunderstorms
then Chance
Showers
Friday
High: 84 °F
Sunny
Friday Night
Low: 66 °F
Partly Cloudy
Saturday
High: 89 °F
Sunny
Saturday Night
Low: 70 °F
Partly Cloudy

Detailed Forecast

Overnight

Patchy drizzle and fog with a chance of showers. Cloudy, with a low around 68. Southeast wind around 5 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

Wednesday

Showers and thunderstorms likely, then showers and possibly a thunderstorm after 5pm. Areas of fog before 9am. High near 88. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

Showers and thunderstorms likely, mainly before 9pm. Patchy fog between midnight and 3am. Otherwise, mostly cloudy, with a low around 73. Southwest wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Juneteenth

Showers and thunderstorms likely after 2pm. Some of the storms could be severe. Mostly sunny, with a high near 93. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night

Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Some of the storms could be severe. Mostly cloudy, with a low around 67. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between three quarters and one inch possible.

Friday

Sunny, with a high near 84.

Friday Night

Partly cloudy, with a low around 66.

Saturday

Sunny, with a high near 89.

Saturday Night

Partly cloudy, with a low around 70.

Sunday

Mostly sunny, with a high near 92.

Sunday Night

Partly cloudy, with a low around 75.