Weather Alert
Sullivan County Weather Warning NWS WEATHER ALERT FOR THE SULLIVAN COUNTY, TN AREA - Issued: 1216 AM EDT Sat Oct 17 2026 Sullivan County Weather Warning

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Sullivan County, TN Weather - Hour by Hour Forecast

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Sullivan County, TN Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Overcast. Temperature is 53°F12°C, dew point 45°F7°C, humidity 73%. Wind direction is WNW at 15 mph24 km/h with visibility of 10 mi16 km. Barometric pressure is 30.1 in1019 mb.
Tonight - Showers until early morning, then a chance of showers late. Much cooler with lows in the lower to mid 40s. Northwest winds 5 to 15.. Full Forecast
Saturday - Mostly sunny. A slight chance of showers in the morning. Much cooler with highs in the lower to mid 50s. North winds 10 to 15 mph .. Full Forecast

Sullivan County Hourly Weather

24 Hour Forecast Scroll
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Sullivan County, TN Hourly Weather - Clear - 1:00 AM Sullivan County, TN Hourly Weather - Clear - 2:00 AM Sullivan County, TN Hourly Weather - Clear - 3:00 AM Sullivan County, TN Hourly Weather - Clear - 4:00 AM Sullivan County, TN Hourly Weather - Clear - 5:00 AM Sullivan County, TN Hourly Weather - Clear - 6:00 AM Sullivan County, TN Hourly Weather - Clear - 7:00 AM Sullivan County, TN Hourly Weather - Clear - 8:00 AM Sullivan County, TN Hourly Weather - Clear - 9:00 AM Sullivan County, TN Hourly Weather - Clear - 10:00 AM Sullivan County, TN Hourly Weather - Clear - 11:00 AM Sullivan County, TN Hourly Weather - Clear - 12:00 PM Sullivan County, TN Hourly Weather - Clear - 1:00 PM Sullivan County, TN Hourly Weather - Clear - 2:00 PM Sullivan County, TN Hourly Weather - Clear - 3:00 PM Sullivan County, TN Hourly Weather - Clear - 4:00 PM Sullivan County, TN Hourly Weather - Clear - 5:00 PM Sullivan County, TN Hourly Weather - Clear - 6:00 PM Sullivan County, TN Hourly Weather - Clear - 7:00 PM Sullivan County, TN Hourly Weather - Clear - 8:00 PM Sullivan County, TN Hourly Weather - Clear - 9:00 PM Sullivan County, TN Hourly Weather - Clear - 10:00 PM Sullivan County, TN Hourly Weather - Clear - 11:00 PM Sullivan County, TN Hourly Weather - Clear - 12:00 AM
Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear
37°F3°C 35°F2°C 34°F1°C 33°F1°C 32°F0°C 32°F0°C 31°F-1°C 31°F-1°C 36°F2°C 42°F6°C 47°F8°C 51°F11°C 56°F13°C 60°F16°C 62°F17°C 63°F17°C 65°F18°C 61°F16°C 56°F13°C 52°F11°C 49°F9°C 46°F8°C 43°F6°C 41°F5°C
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0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 2% 2% 2% 2% 2% 2% 2% 2% 2% 2%
33°F1°C 32°F0°C 31°F-1°C 30°F-1°C 29°F-2°C 29°F-2°C 28°F-2°C 28°F-2°C 29°F-2°C 31°F-1°C 32°F0°C 31°F-1°C 31°F-1°C 30°F-1°C 30°F-1°C 30°F-1°C 30°F-1°C 31°F-1°C 31°F-1°C 32°F0°C 32°F0°C 33°F1°C 33°F1°C 32°F0°C
85% 89% 89% 89% 89% 89% 88% 88% 75% 65% 56% 46% 38% 32% 30% 29% 27% 32% 38% 46% 52% 60% 68% 70%
NNE NNE NNE NE NE NE NE NE NE NE ENE ENE ENE ENE ENE NE NE NE NE NE NE NNE N N
1 mph 1 mph 1 mph 1 mph 1 mph 1 mph 1 mph 1 mph 1 mph 3 mph 3 mph 3 mph 2 mph 2 mph 2 mph 3 mph 3 mph 3 mph 1 mph 1 mph 1 mph 0 mph 0 mph 0 mph
10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km
Hour (EDT)
Weather
Clouds
Temperature
Precip. Type
POP
Dewpoint
Humidity
Wind Direction
Wind Speed
Visibility
POP = Probability of Precipitation. ** Indicates missing data/values from KTRI model statistics.

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Prob Precip % = Probability of Precipitation.

Sullivan County 36 Hour Forecast

POP = Probability of Precipitation. ** Indicates missing data/values from model statistics.

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