Briefing for Heat, Severe Storm, and Flash Flood Risks through Thursday

Dangerously hot and humid conditions are expected through Wednesday. There is also a threat of isolated severe thunderstorms on Wednesday. Flash flooding from locally heavy rainfall is possible on Thursday. See this briefing for details on these hazards. Read More >

Hazardous Weather Conditions

Current conditions at

Philadelphia - Wings Field Airport (KLOM)

Lat: 40.14°NLon: 75.27°WElev: 282ft.

Fair

81°F

27°C

Humidity	78%
Wind Speed	Calm
Barometer	30.03 in
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	86°F (30°C)
Last update	30 Jul 7:55 am EDT

More Information:

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

Extended Forecast for

Conshohocken PA

Heat Advisory July 30, 08:15am until July 30, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory July 30, 08:15am until July 30, 08:00pm
NOW until 8:00pm Wed
Heat Advisory
Today
High: 98 °F
Hot
Tonight
Low: 75 °F
Slight Chance
T-storms then
Mostly Clear
Thursday
High: 88 °F
Chance
T-storms then
Heavy Rain
Thursday Night
Low: 67 °F
Heavy Rain
Friday
High: 72 °F
Showers
Likely
Friday Night
Low: 60 °F
Chance
T-storms then
Slight Chance
Showers
Saturday
High: 80 °F
Sunny
Saturday Night
Low: 59 °F
Mostly Clear

Detailed Forecast

Today

Sunny and hot, with a high near 98. Heat index values as high as 103. Calm wind becoming southwest around 5 mph in the afternoon.

Tonight

A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers and thunderstorms after 5am. Mostly clear, with a low around 75. South wind around 5 mph. Chance of precipitation is 20%.

Thursday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 88. Northeast wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 67. Northeast wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

Friday

Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 72. Northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Friday Night

A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 60. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday

Sunny, with a high near 80.

Saturday Night

Mostly clear, with a low around 59.

Sunday

Sunny, with a high near 83.

Sunday Night

Partly cloudy, with a low around 61.

Monday

Mostly sunny, with a high near 86.

Monday Night

Partly cloudy, with a low around 63.