7-Day Forecast 40.19°N 75.26°W (Text-Only)
NWS Forecast for: Gwynedd PA
Issued by: National Weather Service Philadelphia, PA
Last Update: 4:11 am EDT Jun 18, 2025




This Afternoon: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 5pm. High near 86. Southwest 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.

Tonight: A chance of showers and thunderstorms, mainly before 8pm. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 71. Southwest wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Juneteenth: Showers and thunderstorms after 2pm. Some of the storms could be severe. High near 91. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night: Showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Some of the storms could be severe. Low around 64. Southwest wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Friday: Sunny, with a high near 83. Northwest wind 5 to 10 mph.

Friday Night: Partly cloudy, with a low around 64.

Saturday: Sunny, with a high near 87.

Saturday Night: Partly cloudy, with a low around 69.

Sunday: Mostly sunny, with a high near 91.

Sunday Night: Mostly clear, with a low around 72.

Monday: Sunny, with a high near 96.

Monday Night: Mostly clear, with a low around 74.

Tuesday: Sunny and hot, with a high near 97.



Gwynedd PA
 40.19°N 75.26°W (Elev. 295 ft)

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