NWS Forecast for Merion Station PA

National Weather Service Forecast for: Merion Station PA
Issued by: National Weather Service Philadelphia, PA

Updated: 2:11 pm EDT Jun 19, 2025

Juneteenth Heavy Rain	Tonight Heavy Rain then Mostly Clear	Friday Sunny	Friday Night Partly Cloudy	Saturday Sunny	Saturday Night Partly Cloudy	Sunday Mostly Sunny	Sunday Night Mostly Clear	Monday Hot
Hi 91 °F	Lo 64 °F	Hi 84 °F	Lo 68 °F	Hi 90 °F	Lo 72 °F	Hi 94 °F	Lo 76 °F	Hi 98 °F

Heat Advisory
Severe Thunderstorm Watch

Juneteenth	A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 5pm. Some of the storms could produce heavy rainfall. High near 91. Southwest wind around 15 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight	Showers and thunderstorms likely, mainly before 10pm. Some of the storms could produce heavy rainfall. Mostly cloudy, then gradually becoming mostly clear, with a low around 64. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday	Sunny, with a high near 84. Northwest wind 10 to 15 mph.
Friday Night	Partly cloudy, with a low around 68. West wind around 5 mph.
Saturday	Sunny, with a high near 90. West wind around 5 mph.
Saturday Night	Partly cloudy, with a low around 72.
Sunday	Mostly sunny, with a high near 94.
Sunday Night	Mostly clear, with a low around 76.
Monday	Sunny and hot, with a high near 98.
Monday Night	Mostly clear, with a low around 78.
Tuesday	Sunny and hot, with a high near 99.
Tuesday Night	Mostly clear, with a low around 78.
Wednesday	Sunny, with a high near 95.

Forecast from NOAA-NWS for Merion Station PA.