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Merion, PA Weather Tomorrow

Get the forecast you need for Merion tomorrow with an extended 5 day weather outlook featuring precipitation probability, daily and nightly weather conditions, high and low temperature trends, sunrise and sunset information, sky cover, wind speed, wind direction, and wind chill throughout the Merion area.
Updated: Sun Sep 13th 2026 1:00 PM EDT
Merion, PA Weather – 9-13 – Light Rain Shower
84° / 68°
Light Rain Shower
Periods of rain are likely in Merion, with a high of 84°F and a low of 68°F. The chance of rain is 83% with an estimated 0.5in. Winds will be light at 7mph and gusts of 10.3mph at 6 PM. High humidity with average of 84% is anticipated, the maximum being 86% at 11 PM and 56% being its lowest at 3 PM. Barometric pressure is its highest of 29.9inHg at 9 PM, a lowest point of 29.86inHg at 4 PM with an avg 29.88inHg.
Merion, PA Weather – 9-14 – Sunny
75° / 61°

Weather Tomorrow

Sunny
Highs will reach 75°F with lows near 61°F in Merion, where sunshine is. There might be light rainfall having a 17% chance with an estimated 0in. Wind will be moderate, blowing around 13mph on average and gusts of 25.3mph at 6 AM. Humidity levels should be comfortable, sitting around 56% on average, the maximum being 89% at 2 AM and 32% being its lowest at 5 PM. Barometric pressure is its highest of 30.27inHg at 11 PM, a lowest point of 29.88inHg at 1 AM with an avg 30.06inHg.
Merion, PA Weather – 9-15 – Sunny
77° / 57°
Sunny
Daytime highs will reach 77°F with lows dropping to 57°F in Merion, where bright and sunny conditions. There's a very small chance of rainfall, only about 2%. Winds will be light at 8mph and gusts of 19.1mph at 12 AM. Humidity levels should be comfortable, sitting around 50% on average, the maximum being 64% at 11 PM and 32% being its lowest at 2 PM. Barometric pressure is its highest of 30.4inHg at 10 AM, a lowest point of 30.27inHg at 1 AM with an avg 30.34inHg.
Merion, PA Weather – 9-16 – Sunny
80° / 61°
Sunny
Highs will reach 80°F with lows near 61°F in Merion, where sunshine is. There's a very small chance of rainfall, only about 6%. Winds will be light at 6mph and gusts of 13.2mph at 1 AM. The humidity will be on the higher side, averaging about 61%, the maximum being 79% at 7 AM and 43% being its lowest at 3 PM. Barometric pressure is its highest of 30.38inHg at 8 AM, a lowest point of 30.27inHg at 6 PM with an avg 30.33inHg.
Merion, PA Weather – 9-17 – Sunny
84° / 65°
Sunny
Merion is set for sunshine with temperatures peaking at 84°F and dipping to 65°F. There's a moderate 37% chance of rainfall with an estimated 0.03in. Winds will be light at 9mph and gusts of 15.1mph at 2 AM. The humidity will be on the higher side, averaging about 65%, the maximum being 86% at 10 PM and 44% being its lowest at 3 PM. Barometric pressure is its highest of 30.29inHg at 12 AM, a lowest point of 30.08inHg at 6 PM with an avg 30.18inHg.
Merion, PA Weather – 9-18 – Overcast
78° / 65°
Overcast
Daytime highs will reach 78°F with lows dropping to 65°F in Merion, where it will be overcast. There might be light rainfall having a 17% chance with an estimated 0.01in. Winds will be light at 10mph and gusts of 20.8mph at 8 AM. The humidity will be on the higher side, averaging about 63%, the maximum being 83% at 12 AM and 43% being its lowest at 2 PM. Barometric pressure is its highest of 30.21inHg at 11 PM, a lowest point of 30.14inHg at 5 PM with an avg 30.17inHg.

Currently

Sunny 80°F
29.92 inHg.
Barometer
64%
Humidity
NW 6.1 mph
Wind
Sunny

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