Weather Alert
Sullivan County Weather Warning NWS WEATHER ALERT FOR THE SULLIVAN COUNTY, TN AREA - Issued: 1234 AM EDT Tue Sep 1 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 - Mist. Temperature is 67°F19°C, dew point 67°F19°C, humidity 100%. Wind direction is N at 0 mph0 km/h with visibility of 5 mi8 km. Barometric pressure is 30.17 in1022 mb.
Rest of Tonight - Mostly clear. Lows in the upper 60s. Light winds... Full Forecast
Tuesday - Sunny. Highs in the upper 80s to lower 90s. Light winds... Full Forecast

Sullivan County Hourly Weather

24 Hour Forecast Scroll
Tue, Sep 01
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Sullivan County, TN Hourly Weather - Partly Cloudy - 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 - Mostly Clear - 7:00 AM Sullivan County, TN Hourly Weather - Mostly Clear - 8:00 AM Sullivan County, TN Hourly Weather - Mostly Clear - 9:00 AM Sullivan County, TN Hourly Weather - Mostly Clear - 10:00 AM Sullivan County, TN Hourly Weather - Mostly Clear - 11:00 AM Sullivan County, TN Hourly Weather - Mostly Clear - 12:00 PM Sullivan County, TN Hourly Weather - Partly Cloudy - 1:00 PM Sullivan County, TN Hourly Weather - Partly Cloudy - 2:00 PM Sullivan County, TN Hourly Weather - Partly Cloudy - 3:00 PM Sullivan County, TN Hourly Weather - Partly Cloudy - 4:00 PM Sullivan County, TN Hourly Weather - Partly Cloudy - 5:00 PM Sullivan County, TN Hourly Weather - Partly Cloudy - 6:00 PM Sullivan County, TN Hourly Weather - Partly Cloudy - 7:00 PM Sullivan County, TN Hourly Weather - Partly Cloudy - 8:00 PM Sullivan County, TN Hourly Weather - Partly Cloudy - 9:00 PM Sullivan County, TN Hourly Weather - Mostly Clear - 10:00 PM Sullivan County, TN Hourly Weather - Mostly Clear - 11:00 PM Sullivan County, TN Hourly Weather - Mostly Clear - 12:00 AM Sullivan County, TN Hourly Weather - Clear - 1:00 AM Sullivan County, TN Hourly Weather - Clear - 2:00 AM
Partly Cloudy Clear Clear Clear Mostly Clear Mostly Clear Mostly Clear Mostly Clear Mostly Clear Mostly Clear Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Mostly Clear Mostly Clear Mostly Clear Clear Clear
67°F19°C 67°F19°C 66°F19°C 67°F19°C 67°F19°C 68°F20°C 72°F22°C 77°F25°C 81°F27°C 84°F29°C 87°F31°C 90°F32°C 91°F33°C 91°F33°C 92°F33°C 89°F32°C 87°F31°C 84°F29°C 81°F27°C 77°F25°C 74°F23°C 73°F23°C 71°F22°C 70°F21°C
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2% 2% 2% 2% 2% 2% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
67°F19°C 66°F19°C 66°F19°C 66°F19°C 67°F19°C 67°F19°C 68°F20°C 68°F20°C 69°F21°C 68°F20°C 68°F20°C 67°F19°C 67°F19°C 66°F19°C 66°F19°C 67°F19°C 67°F19°C 68°F20°C 68°F20°C 69°F21°C 69°F21°C 68°F20°C 68°F20°C 67°F19°C
100% 97% 100% 97% 100% 97% 87% 74% 67% 59% 53% 47% 46% 44% 43% 48% 52% 59% 65% 76% 84% 84% 90% 90%
N N N N N N E S SSW SSW W WNW W W SSW SSW SSW SSW S E N N N N
0 mph 0 mph 0 mph 0 mph 0 mph 0 mph 0 mph 1 mph 1 mph 1 mph 4 mph 4 mph 4 mph 4 mph 4 mph 4 mph 2 mph 2 mph 2 mph 0 mph 0 mph 0 mph 0 mph 0 mph
3 mi5 km 3 mi5 km .75 mi1 km .75 mi1 km 3 mi5 km 3 mi5 km 5 mi8 km 6 mi10 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 6 mi10 km 6 mi10 km 5 mi8 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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