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Sullivan County, TN Weather Forecast
Sullivan County, TN Weather Forecast Dated: 643 AM Mon Aug 31 2026 (Sullivan County Time)
Expect a very warm period with a mix of sun and clouds and frequent chances of rain over the next two weeks. generally humid conditions and no major pressure swings will dominate. Isolated storms at times.
Monday, August 31, 2026
Mid-Morning
79°F 26°C
Sunny
Mid-Afternoon
86°F 30°C
Sunny
Early-Evening
81°F 28°C
Sunny
Very warm with mostly sunny skies in the morning, then mostly sunny for the afternoon and evening, steady humidity and steady pressure.
Tuesday, September 1, 2026
Mid-Morning
71°F 22°C
Sunny
Mid-Afternoon
88°F 31°C
Sunny
Early-Evening
84°F 29°C
Sunny
Very warm with mostly sunny skies in the morning, then mostly sunny for the afternoon and evening, lower humidity and steady pressure.
Wednesday, September 2, 2026
Mid-Morning
73°F 23°C
Sunny
Mid-Afternoon
90°F 32°C
Sunny
Early-Evening
76°F 25°C
Scattered Showers
Hot with mostly sunny skies in the morning, mostly sunny in the afternoon, and mostly cloudy in the evening, increasing humidity and steady pressure.
Thursday, September 3, 2026
Mid-Morning
69°F 20°C
Sunny
Mid-Afternoon
89°F 32°C
Sunny
Early-Evening
82°F 28°C
Sunny
Very warm with mostly sunny skies in the morning, mostly sunny in the afternoon, and partly sunny in the evening, lower humidity and steady pressure.
Friday, September 4, 2026
Mid-Morning
69°F 21°C
Scattered Showers
Mid-Afternoon
88°F 31°C
Scattered Showers
Early-Evening
83°F 28°C
Scattered Showers
Very warm with a mix of sun and clouds, lower humidity and barometric pressure falling. Scattered showers, some areas remaining dry.
Saturday, September 5, 2026
Mid-Morning
74°F 23°C
Sunny
Mid-Afternoon
87°F 31°C
Light Showers
Early-Evening
83°F 29°C
Scattered Showers
Very warm with a mix of sun and clouds, lower humidity and barometric pressure falling.
Sunday, September 6, 2026
Mid-Morning
68°F 20°C
Sunny
Mid-Afternoon
83°F 28°C
Partly Cloudy
Early-Evening
77°F 25°C
Cloudy
Very warm with mostly sunny skies in the morning, mostly sunny in the afternoon, and partly sunny in the evening, lower humidity and steady pressure.
Monday, September 7, 2026
Mid-Morning
69°F 20°C
Scattered Showers
Mid-Afternoon
78°F 26°C
Light Showers
Early-Evening
74°F 24°C
Scattered Showers
Warm with a mix of sun and clouds, steady humidity and steady pressure.
Tuesday, September 8, 2026
Mid-Morning
68°F 20°C
Scattered Showers
Mid-Afternoon
67°F 19°C
Scattered Showers
Early-Evening
62°F 17°C
Scattered Showers
Cool with a mix of sun and clouds, steady humidity and steady pressure. Spotty showers, dry in most areas. Winds ESE at 8 mph 13 km/h.
Wednesday, September 9, 2026
Mid-Morning
70°F 21°C
Overcast
Mid-Afternoon
73°F 23°C
Light Showers
Early-Evening
71°F 22°C
Light Showers
Warm with a mix of sun and clouds, increasing humidity and steady pressure.
Thursday, September 10, 2026
Mid-Morning
68°F 20°C
Scattered Showers
Mid-Afternoon
78°F 25°C
Partly Cloudy
Early-Evening
78°F 26°C
Sunny
Warm with a mix of sun and clouds, lower humidity and steady pressure.
Friday, September 11, 2026
Mid-Morning
73°F 23°C
Sunny
Mid-Afternoon
84°F 29°C
Overcast
Early-Evening
81°F 27°C
Light Showers
Very warm with overcast skies, lower humidity and steady pressure.
Saturday, September 12, 2026
Mid-Morning
74°F 23°C
Sunny
Mid-Afternoon
85°F 30°C
Scattered Showers
Early-Evening
80°F 27°C
Sunny
Very warm with a mix of sun and clouds, lower humidity and steady pressure. Isolated showers.
Sunday, September 13, 2026
Mid-Morning
75°F 24°C
Cloudy
Mid-Afternoon
82°F 28°C
Sunny
Early-Evening
78°F 26°C
Sunny
Very warm with mostly sunny skies in the morning, then mostly sunny for the afternoon and evening, steady humidity and steady pressure. Winds shifting from ESE to E at 8 mph 13 km/h.
Sullivan County, TN Weather Radar Map
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