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Sullivan, PA Weather Forecast
Sullivan, PA Weather Forecast Dated: 1011 AM Thu Sep 10 2026
Expect a cool pattern with a mix of sun and clouds and occasional showers over the coming period. generally humid conditions and no major pressure swings will dominate.
Thursday, September 10, 2026
Mid-Morning
71°F 21°C
Light Rain
Mid-Afternoon
72°F 22°C
Overcast
Early-Evening
67°F 19°C
Overcast
Pleasant near 72°F 22°C, early showers breaking for a drier afternoon, with lower humidity and steady pressure. Winds turning from the W to the NW at 7 mph 11 km/h.
Friday, September 11, 2026
Mid-Morning
53°F 12°C
Partly Cloudy
Mid-Afternoon
65°F 18°C
Sunny
Early-Evening
61°F 16°C
Sunny
Mildly cool near 65°F 18°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure.
Saturday, September 12, 2026
Mid-Morning
56°F 13°C
Sunny
Mid-Afternoon
70°F 21°C
Sunny
Early-Evening
67°F 19°C
Sunny
Enjoyable around 70°F 21°C, sunny throughout the day, with steady humidity and steady pressure. Winds blowing from the S at 10 mph 16 km/h.
Sunday, September 13, 2026
Mid-Morning
61°F 16°C
Overcast
Mid-Afternoon
69°F 20°C
Scattered Showers
Early-Evening
67°F 20°C
Cloudy
Mild temperatures up to 69°F 20°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds moving from the S to the NW at 5 mph 7 km/h.
Monday, September 14, 2026
Mid-Morning
57°F 14°C
Overcast
Mid-Afternoon
75°F 24°C
Scattered Showers
Early-Evening
71°F 22°C
Scattered Showers
Mild with a high of 75°F 24°C, scattered downpours possible, with steady humidity and barometric pressure falling.
Tuesday, September 15, 2026
Mid-Morning
71°F 22°C
Sunny
Mid-Afternoon
81°F 27°C
Partly Cloudy
Early-Evening
77°F 25°C
Light Showers
Warm and summery near 81°F 27°C, dry most of the day, with showers developing late, with steady humidity and steady pressure. Winds swinging from the SSW to the WSW at 7 mph 11 km/h.
Wednesday, September 16, 2026
Mid-Morning
65°F 18°C
Light Fog
Mid-Afternoon
64°F 18°C
Overcast
Early-Evening
64°F 18°C
Overcast
Comfortable at 64°F 18°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with lower humidity and steady pressure. Winds shifting from the WNW to the SW at 6 mph 11 km/h.
Thursday, September 17, 2026
Mid-Morning
56°F 13°C
Sunny
Mid-Afternoon
70°F 21°C
Partly Cloudy
Early-Evening
68°F 20°C
Partly Cloudy
Enjoyable around 70°F 21°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and barometric pressure falling. Winds turning from the SE to the SSW at 8 mph 13 km/h. Gusts up to 20 mph 32 km/h.
Friday, September 18, 2026
Mid-Morning
46°F 8°C
Sunny
Mid-Afternoon
55°F 13°C
Sunny
Early-Evening
52°F 11°C
Sunny
Brisk around 55°F 13°C, cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds out of the NNW at 13 mph 22 km/h. Gusts up to 20 mph 32 km/h.
Saturday, September 19, 2026
Mid-Morning
43°F 6°C
Sunny
Mid-Afternoon
54°F 12°C
Partly Cloudy
Early-Evening
50°F 10°C
Sunny
Cool and brisk at 54°F 12°C, sunny in the morning, becoming partly cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds moving from the NW to the WNW at 8 mph 12 km/h.
Sunday, September 20, 2026
Mid-Morning
43°F 6°C
Partly Cloudy
Mid-Afternoon
53°F 12°C
Sunny
Early-Evening
49°F 10°C
Sunny
Chilly near 53°F 12°C, sunny throughout the day, with lower humidity and steady pressure. Winds swinging from the NW to the NE at 5 mph 7 km/h.
Monday, September 21, 2026
Mid-Morning
49°F 10°C
Sunny
Mid-Afternoon
61°F 16°C
Overcast
Early-Evening
57°F 14°C
Sunny
Cool with a high near 61°F 16°C, sunny in the morning, overcast in the afternoon, and cloudy this evening, with steady humidity and barometric pressure falling. Winds shifting from the SSW to the S at 6 mph 11 km/h.
Tuesday, September 22, 2026
Mid-Morning
55°F 13°C
Sunny
Mid-Afternoon
65°F 18°C
Sunny
Early-Evening
61°F 16°C
Sunny
Refreshing around 65°F 18°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds blowing from the S at 13 mph 21 km/h.
Wednesday, September 23, 2026
Mid-Morning
55°F 13°C
Overcast
Mid-Afternoon
54°F 12°C
Overcast
Early-Evening
55°F 13°C
Scattered Showers
Cool and brisk at 54°F 12°C, scattered downpours possible, with steady humidity and steady pressure.
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