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Arnold, PA Weather Forecast
Arnold, PA Weather Forecast Dated: 1239 PM Fri Sep 11 2026
Expect a mild stretch with a mix of sun and clouds and frequent chances of rain over the coming period. generally humid conditions and no major pressure swings will dominate.
Friday, September 11, 2026
Mid-Morning
69°F 20°C
Sunny
Mid-Afternoon
83°F 28°C
Sunny
Early-Evening
72°F 22°C
Sunny
Warm and summery around 83°F 28°C (feels like 86°F 30°C), sunny through the afternoon, turning cloudy this evening, with lower humidity and steady pressure.
Saturday, September 12, 2026
Mid-Morning
66°F 19°C
Scattered Showers
Mid-Afternoon
66°F 19°C
Light Showers
Early-Evening
67°F 20°C
Fog
Mildly cool near 66°F 19°C, scattered downpours possible, with increasing humidity and steady pressure.
Sunday, September 13, 2026
Mid-Morning
66°F 19°C
Light Fog
Mid-Afternoon
79°F 26°C
Scattered Showers
Early-Evening
76°F 24°C
Scattered Showers
Enjoyable around 79°F 26°C, locally heavy downpours at times, with lower humidity and steady pressure.
Monday, September 14, 2026
Mid-Morning
61°F 16°C
Overcast
Mid-Afternoon
74°F 23°C
Overcast
Early-Evening
67°F 20°C
Cloudy
Mild temperatures up to 74°F 23°C, overcast through the afternoon, turning cloudy this evening, with lower humidity and steady pressure.
Tuesday, September 15, 2026
Mid-Morning
65°F 18°C
Sunny
Mid-Afternoon
73°F 23°C
Partly Cloudy
Early-Evening
69°F 21°C
Overcast
Mild with a high of 73°F 23°C, sunny in the morning, partly cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure.
Wednesday, September 16, 2026
Mid-Morning
75°F 24°C
Partly Cloudy
Mid-Afternoon
87°F 31°C
Sunny
Early-Evening
82°F 28°C
Sunny
Very warm near 87°F 31°C, though humidity makes it feel like 90°F 32°C, sunny throughout the day, with lower humidity and steady pressure. Winds turning from the S to the SSW at 6 mph 9 km/h.
Thursday, September 17, 2026
Mid-Morning
69°F 21°C
Scattered Showers
Mid-Afternoon
74°F 23°C
Light Showers
Early-Evening
63°F 17°C
Heavy Rain Showers
Comfortable with temperatures reaching 74°F 23°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds switching from the SSW to the SW at 9 mph 15 km/h. Gusts up to 21 mph 34 km/h.
Friday, September 18, 2026
Mid-Morning
53°F 12°C
Sunny
Mid-Afternoon
66°F 19°C
Partly Cloudy
Early-Evening
61°F 16°C
Sunny
Cool with a high near 66°F 19°C, sunny throughout the day, with lower humidity and steady pressure. Winds moving from the NNW to the WSW at 6 mph 10 km/h.
Saturday, September 19, 2026
Mid-Morning
54°F 12°C
Sunny
Mid-Afternoon
67°F 20°C
Sunny
Early-Evening
62°F 17°C
Sunny
Refreshing around 67°F 20°C, sunny throughout the day, with lower humidity and steady pressure.
Sunday, September 20, 2026
Mid-Morning
58°F 14°C
Cloudy
Mid-Afternoon
71°F 21°C
Sunny
Early-Evening
64°F 18°C
Sunny
Mild with a high of 71°F 21°C, overcast in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure.
Monday, September 21, 2026
Mid-Morning
57°F 14°C
Overcast
Mid-Afternoon
70°F 21°C
Sunny
Early-Evening
63°F 18°C
Partly Cloudy
Pleasant near 70°F 21°C, partly cloudy in the morning, sunny in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure.
Tuesday, September 22, 2026
Mid-Morning
55°F 13°C
Light Showers
Mid-Afternoon
51°F 11°C
Scattered Showers
Early-Evening
51°F 11°C
Light Fog
Crisp with a high near 51°F 11°C, locally heavy downpours at times, with increasing humidity and steady pressure.
Wednesday, September 23, 2026
Mid-Morning
53°F 12°C
Partly Cloudy
Mid-Afternoon
64°F 18°C
Partly Cloudy
Early-Evening
63°F 17°C
Sunny
Refreshing around 64°F 18°C, partly cloudy in the morning, overcast in the afternoon, and sunny this evening, with steady humidity and steady pressure.
Thursday, September 24, 2026
Mid-Morning
57°F 14°C
Sunny
Mid-Afternoon
73°F 23°C
Sunny
Early-Evening
68°F 20°C
Sunny
Mild temperatures up to 73°F 23°C, sunny throughout the day, with steady humidity and steady pressure.
Arnold, PA Weather Radar Map
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