Lala Impacting Hawaii; Severe Thunderstorm and Flash Flooding Risks; Excessive Heat

Areas of gusty winds, heavy rain leading to flash flooding, and high surf continue across portions of Hawaii as Tropical Storm Lala continues to move away from the islands. Severe thunderstorm, heavy rainfall, and flash flooding threats continue from the Midwest to the Mid-Atlantic and across the central High Plains. Record heat continues for areas of the central/southern Plain into the Southeast Read More >

Hazardous Weather Conditions

Flash Flood Warning until August 17, 06:00 AM EDT

Current conditions at

Philadelphia - Wings Field Airport (KLOM)

Lat: 40.14°NLon: 75.27°WElev: 282ft.

Fog/Mist

68°F

20°C

Humidity	100%
Wind Speed	Calm
Barometer	29.84 in
Dewpoint	68°F (20°C)
Visibility	5.00 mi
Last update	17 Aug 3:55 am EDT

More Information:

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

Extended Forecast for

Montgomeryville PA

Flash Flood Warning August 17, 04:22am until August 17, 06:00am

Click here for hazard details and duration

Flash Flood Warning

Flash Flood Warning August 17, 04:22am until August 17, 06:00am
NOW until 6:00am Mon
Flash Flood Warning
Overnight
Low: 66 °F
Chance
Showers and
Patchy Fog
Monday
High: 86 °F
Patchy Fog
then Chance
Showers
Monday Night
Low: 69 °F
Slight Chance
T-storms and
Patchy Fog
then Patchy
Fog
Tuesday
High: 85 °F
Mostly Sunny
Tuesday Night
Low: 65 °F
Mostly Clear
Wednesday
High: 86 °F
Sunny
Wednesday Night
Low: 68 °F
Partly Cloudy
Thursday
High: 83 °F
Showers
Likely

Detailed Forecast

Overnight

A chance of showers and thunderstorms. Patchy fog. Otherwise, cloudy, with a low around 66. South wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Monday

A slight chance of showers, then a chance of showers and thunderstorms after 5pm. Patchy fog before 11am. Otherwise, partly sunny, with a high near 86. Northwest wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Monday Night

A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 9pm. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 69. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 20%.

Tuesday

Mostly sunny, with a high near 85. North wind around 5 mph.

Tuesday Night

Mostly clear, with a low around 65. Northwest wind around 5 mph becoming calm.

Wednesday

Sunny, with a high near 86.

Wednesday Night

Partly cloudy, with a low around 68.

Thursday

Showers likely and possibly a thunderstorm, mainly after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 60%.

Thursday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.

Friday

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

Friday Night

A chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 50%.

Saturday

A chance of showers. Mostly cloudy, with a high near 80. Chance of precipitation is 50%.

Saturday Night

A chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 50%.

Sunday

A chance of showers. Partly sunny, with a high near 81. Chance of precipitation is 40%.