Grainger County, TN Weather Forecast & Current Conditions

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Grainger County, TN Weather Maps

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Grainger County Weather Map
UTC Time: 9/21/2026, 18:18
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Grainger County, TN

Today
Thunderstorms
90°/ 68° 32°/ 20°
50%
Tuesday
Thunderstorms
88°/ 65° 31°/ 18°
70%
Wednesday
Thunderstorms
78°/ 60° 26°/ 16°
90%
Thursday
Thunderstorms
75°/ 55° 24°/ 13°
40%
Friday
Sunny
75°/ 52° 24°/ 11°
0%
Saturday
Sunny
75°/ 52° 24°/ 11°
0%
Sunday
Sunny
75°24°
0%

Day: Mostly sunny. A slight chance of showers this morning and early afternoon. A slight chance of thunderstorms early this afternoon, then a chance of showers and thunderstorms late. Highs around 90. Light winds. Chance of rain 50 percent.

Night: Mostly cloudy. A chance of thunderstorms in the evening. A chance of showers. A slight chance of thunderstorms after midnight. Lows in the upper 60s. Light winds. Chance of rain 50 percent.

Jefferson City, TN

Today
Thunderstorms
92°/ 68° 33°/ 20°
40%
Tuesday
Thunderstorms
88°/ 65° 31°/ 18°
70%
Wednesday
Thunderstorms
80°/ 62° 27°/ 17°
100%
Thursday
Thunderstorms
78°/ 58° 26°/ 14°
50%
Friday
Sunny
75°/ 55° 24°/ 13°
0%
Saturday
Sunny
75°/ 52° 24°/ 11°
0%
Sunday
Sunny
75°24°
0%

Day: Mostly sunny. A slight chance of showers this morning and early afternoon. A slight chance of thunderstorms early this afternoon, then a chance of showers and thunderstorms late. Highs in the lower 90s. Light winds. Chance of rain 40 percent.

Night: Mostly cloudy. A chance of thunderstorms in the evening. A chance of showers. A slight chance of thunderstorms after midnight. Lows in the upper 60s. Light winds. Chance of rain 40 percent.

Lone Mountain, TN

Today
Thunderstorms
88°/ 65° 31°/ 18°
50%
Tuesday
Thunderstorms
85°/ 62° 29°/ 17°
70%
Wednesday
Thunderstorms
78°/ 58° 26°/ 14°
90%
Thursday
Thunderstorms
75°/ 55° 24°/ 13°
40%
Friday
Sunny
75°/ 50° 24°/ 10°
0%
Saturday
Sunny
75°/ 50° 24°/ 10°
0%
Sunday
Sunny
78°26°
0%

Day: Mostly sunny. A slight chance of showers this morning, then a chance of showers and thunderstorms this afternoon. Highs in the mid to upper 80s. Light winds. Chance of rain 50 percent.

Night: Mostly cloudy. A chance of thunderstorms in the evening. A chance of showers. A slight chance of thunderstorms after midnight. Lows in the mid 60s. Light winds. Chance of rain 50 percent.

Alpha, TN

Today
Thunderstorms
90°/ 68° 32°/ 20°
40%
Tuesday
Thunderstorms
85°/ 65° 29°/ 18°
70%
Wednesday
Thunderstorms
78°/ 62° 26°/ 17°
90%
Thursday
Thunderstorms
75°/ 58° 24°/ 14°
50%
Friday
Sunny
75°/ 52° 24°/ 11°
0%
Saturday
Sunny
72°/ 52° 22°/ 11°
0%
Sunday
Sunny
75°24°
0%

Day: Mostly sunny. A slight chance of showers this morning and early afternoon. A slight chance of thunderstorms early this afternoon, then a chance of showers and thunderstorms late. Highs around 90. Light winds. Chance of rain 40 percent.

Night: Mostly cloudy. A chance of thunderstorms in the evening. A chance of showers. A slight chance of thunderstorms after midnight. Lows in the upper 60s. Light winds. Chance of rain 40 percent.

Maynardville, TN

Today
Thunderstorms
90°/ 68° 32°/ 20°
50%
Tuesday
Thunderstorms
85°/ 65° 29°/ 18°
70%
Wednesday
Thunderstorms
78°/ 62° 26°/ 17°
90%
Thursday
Thunderstorms
75°/ 58° 24°/ 14°
40%
Friday
Sunny
75°/ 52° 24°/ 11°
0%
Saturday
Sunny
75°/ 52° 24°/ 11°
0%
Sunday
Sunny
75°24°
0%

Day: Mostly sunny. A slight chance of showers and thunderstorms early this afternoon. A chance of showers and thunderstorms late. Highs around 90. Light winds. Chance of rain 50 percent.

Night: Mostly cloudy. A chance of thunderstorms in the evening. A chance of showers. A slight chance of thunderstorms after midnight. Lows in the upper 60s. Light winds. Chance of rain 50 percent.

Mooresburg, TN

Today
Thunderstorms
88°/ 65° 31°/ 18°
50%
Tuesday
Thunderstorms
85°/ 62° 29°/ 17°
70%
Wednesday
Thunderstorms
78°/ 58° 26°/ 14°
100%
Thursday
Thunderstorms
75°/ 55° 24°/ 13°
40%
Friday
Sunny
72°/ 50° 22°/ 10°
0%
Saturday
Sunny
75°/ 48° 24°/
0%
Sunday
Sunny
75°24°
0%

Day: Mostly sunny. A slight chance of showers and thunderstorms this morning and early afternoon, then a chance of showers and thunderstorms late. Highs in the upper 80s. Light winds. Chance of rain 40 percent.

Night: Mostly cloudy. A chance of thunderstorms in the evening. A chance of showers. A slight chance of thunderstorms after midnight. Lows in the mid 60s. Light winds. Chance of rain 50 percent.

Bearden, TN

Today
Thunderstorms
92°/ 68° 33°/ 20°
50%
Tuesday
Thunderstorms
88°/ 65° 31°/ 18°
70%
Wednesday
Thunderstorms
80°/ 62° 27°/ 17°
90%
Thursday
Thunderstorms
78°/ 58° 26°/ 14°
50%
Friday
Sunny
78°/ 55° 26°/ 13°
0%
Saturday
Sunny
75°/ 52° 24°/ 11°
0%
Sunday
Sunny
78°26°
0%

Day: Mostly sunny. A slight chance of showers and thunderstorms early this afternoon. A chance of showers and thunderstorms late. Highs in the lower 90s. Light winds. Chance of rain 40 percent.

Night: Mostly cloudy. A chance of showers and thunderstorms until early morning, then a slight chance of showers late. Lows in the upper 60s. Light winds. Chance of rain 50 percent.

Evanston, TN

Today
Thunderstorms
88°/ 65° 31°/ 18°
50%
Tuesday
Thunderstorms
85°/ 62° 29°/ 17°
70%
Wednesday
Thunderstorms
75°/ 58° 24°/ 14°
100%
Thursday
Thunderstorms
75°/ 55° 24°/ 13°
40%
Friday
Sunny
72°/ 48° 22°/
0%
Saturday
Sunny
72°/ 48° 22°/
0%
Sunday
Sunny
72°22°
0%

Day: Mostly sunny. A slight chance of showers and thunderstorms this morning and early afternoon, then a chance of showers and thunderstorms late. Highs in the upper 80s. Light winds. Chance of rain 50 percent.

Night: Mostly cloudy. A chance of thunderstorms in the evening. A chance of showers. A slight chance of thunderstorms after midnight. Lows in the mid 60s. Light winds. Chance of rain 50 percent.

Harrisburg, TN

Today
Thunderstorms
88°/ 68° 31°/ 20°
40%
Tuesday
Thunderstorms
88°/ 65° 31°/ 18°
90%
Wednesday
Thunderstorms
78°/ 62° 26°/ 17°
100%
Thursday
Thunderstorms
78°/ 58° 26°/ 14°
70%
Friday
Rain Showers
75°/ 52° 24°/ 11°
20%
Saturday
Sunny
75°/ 52° 24°/ 11°
0%
Sunday
Sunny
75°24°
0%

Day: Sunny. A slight chance of showers this morning and early afternoon. A slight chance of thunderstorms early this afternoon, then a chance of showers and thunderstorms late. Highs in the upper 80s to lower 90s. Light winds. Chance of rain 40 percent.

Night: Mostly cloudy. A chance of thunderstorms in the evening. A chance of showers. A slight chance of thunderstorms after midnight. Lows in the upper 60s. Light winds. Chance of rain 40 percent.

Bybee, TN

Today
Thunderstorms
88°/ 68° 31°/ 20°
40%
Tuesday
Thunderstorms
85°/ 65° 29°/ 18°
80%
Wednesday
Thunderstorms
78°/ 62° 26°/ 17°
100%
Thursday
Thunderstorms
75°/ 58° 24°/ 14°
50%
Friday
Rain Showers
75°/ 52° 24°/ 11°
20%
Saturday
Sunny
72°/ 52° 22°/ 11°
0%
Sunday
Sunny
75°24°
0%

Day: Mostly sunny. A slight chance of showers and thunderstorms this morning and early afternoon, then a chance of showers and thunderstorms late. Highs in the upper 80s to lower 90s. Light winds. Chance of rain 40 percent.

Night: Mostly cloudy. A chance of thunderstorms in the evening. A chance of showers. A slight chance of thunderstorms after midnight. Lows in the upper 60s. Light winds. Chance of rain 40 percent.

Greeneville, TN

Today
Thunderstorms
88°/ 65° 31°/ 18°
50%
Tuesday
Thunderstorms
85°/ 62° 29°/ 17°
70%
Wednesday
Thunderstorms
78°/ 58° 26°/ 14°
100%
Thursday
Thunderstorms
75°/ 55° 24°/ 13°
50%
Friday
Sunny
72°/ 50° 22°/ 10°
0%
Saturday
Sunny
72°/ 48° 22°/
0%
Sunday
Sunny
72°22°
0%

Day: Mostly sunny. A slight chance of showers and thunderstorms this morning and early afternoon, then a chance of showers and thunderstorms late. Highs in the upper 80s. Light winds. Chance of rain 40 percent.

Night: Mostly cloudy. A chance of showers and thunderstorms until early morning, then a slight chance of showers late. Lows in the mid 60s. Light winds. Chance of rain 50 percent.

Rose Hill, VA

Today
Thunderstorms
88°/ 65° 31°/ 18°
70%
Tuesday
Thunderstorms
78°/ 62° 26°/ 17°
70%
Wednesday
Thunderstorms
75°/ 58° 24°/ 14°
100%
Thursday
Thunderstorms
75°/ 52° 24°/ 11°
40%
Friday
Sunny
68°/ 48° 20°/
0%
Saturday
Sunny
68°/ 48° 20°/
0%
Sunday
Sunny
75°24°
0%

Day: Mostly sunny. A slight chance of showers and thunderstorms this morning, then a chance of showers and thunderstorms this afternoon. Highs in the mid to upper 80s. Light winds. Chance of rain 50 percent.

Night: Mostly cloudy. Showers likely with a chance of thunderstorms in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. A slight chance of showers late. Lows in the mid 60s. Light winds. Chance of rain 70 percent.

Middlesboro, KY

Today
Thunderstorms
90°/ 65° 32°/ 18°
70%
Tuesday
Thunderstorms
80°/ 62° 27°/ 17°
70%
Wednesday
Thunderstorms
78°/ 58° 26°/ 14°
80%
Thursday
Rain Showers
75°/ 55° 24°/ 13°
30%
Friday
Partly Cloudy
72°/ 48° 22°/
0%
Sat Night
Clear
48°
0%
Sunday
Partly Cloudy
78°26°
0%

Day: Partly sunny late this morning, then partly cloudy with a chance of showers and thunderstorms this afternoon. Hot with highs around 90. South winds around 5 mph. Chance of rain 50 percent.

Night: Showers likely. A chance of thunderstorms in the evening, then a slight chance of thunderstorms overnight. Patchy valley fog late. Humid with lows in the mid 60s. Light and variable winds. Chance of rain 70 percent.

Oak Ridge, TN

Today
Thunderstorms
88°/ 68° 31°/ 20°
50%
Tuesday
Thunderstorms
85°/ 65° 29°/ 18°
70%
Wednesday
Thunderstorms
78°/ 62° 26°/ 17°
80%
Thursday
Thunderstorms
75°/ 58° 24°/ 14°
50%
Friday
Sunny
75°/ 52° 24°/ 11°
0%
Saturday
Sunny
72°/ 52° 22°/ 11°
0%
Sunday
Sunny
75°24°
0%

Day: Mostly sunny. A slight chance of showers and thunderstorms early this afternoon. A chance of showers and thunderstorms late. Highs in the mid to upper 80s. Light winds. Chance of rain 50 percent.

Night: Mostly cloudy. A chance of thunderstorms in the evening. A chance of showers. A slight chance of thunderstorms after midnight. Lows in the upper 60s. Light winds. Chance of rain 50 percent.

Hartford, TN

Today
Thunderstorms
85°/ 60° 29°/ 16°
50%
Tuesday
Thunderstorms
68°/ 58° 20°/ 14°
90%
Wednesday
Thunderstorms
75°/ 62° 24°/ 17°
100%
Thursday
Thunderstorms
58°/ 48° 14°/
70%
Friday
Rain Showers
55°/ 45° 13°/
20%
Saturday
Sunny
55°/ 45° 13°/
0%
Sunday
Sunny
58°14°
0%

Day: Mostly sunny. A slight chance of showers and thunderstorms this morning, then a chance of showers and thunderstorms this afternoon. Highs in the 70s to mid 80s. Light winds. Chance of rain 50 percent.

Night: Mostly cloudy. A chance of thunderstorms in the evening. A chance of showers. A slight chance of thunderstorms after midnight. Lows in the 60s. Light winds. Chance of rain 40 percent.

Cumberland Harlan, KY

Today
Thunderstorms
88°/ 65° 31°/ 18°
70%
Tuesday
Thunderstorms
78°/ 62° 26°/ 17°
70%
Wednesday
Thunderstorms
75°/ 58° 24°/ 14°
90%
Thursday
Rain Showers
72°/ 55° 22°/ 13°
30%
Fri Night
Clear
48°
0%
Saturday
Partly Cloudy
68°/ 48° 20°/
0%
Sunday
Partly Cloudy
72°22°
0%

Day: Partly sunny. A chance of showers and thunderstorms this afternoon. Hot with highs in the upper 80s. Light and variable winds. Chance of rain 50 percent.

Night: Showers likely with a chance of thunderstorms in the evening, then showers likely with a slight chance of thunderstorms overnight. Patchy valley fog late. Humid with lows in the mid 60s. Light and variable winds. Chance of rain 70 percent.

Fincastle, TN

Today
Thunderstorms
88°/ 68° 31°/ 20°
50%
Tuesday
Thunderstorms
82°/ 65° 28°/ 18°
70%
Wednesday
Thunderstorms
75°/ 60° 24°/ 16°
80%
Thursday
Thunderstorms
75°/ 55° 24°/ 13°
50%
Friday
Sunny
72°/ 52° 22°/ 11°
0%
Saturday
Sunny
72°/ 52° 22°/ 11°
0%
Sunday
Sunny
75°24°
0%

Day: Mostly sunny. A slight chance of showers and thunderstorms early this afternoon. A chance of showers and thunderstorms late. Highs in the mid to upper 80s. Light winds. Chance of rain 50 percent.

Night: Mostly cloudy. A chance of thunderstorms in the evening. A chance of showers. A slight chance of thunderstorms after midnight. Lows in the upper 60s. Light winds. Chance of rain 50 percent.

Elkmont, TN

Today
Thunderstorms
85°/ 58° 29°/ 14°
50%
Tuesday
Thunderstorms
68°/ 55° 20°/ 13°
90%
Wednesday
Thunderstorms
75°/ 62° 24°/ 17°
100%
Thursday
Thunderstorms
58°/ 48° 14°/
70%
Friday
Rain Showers
55°/ 45° 13°/
30%
Saturday
Sunny
55°/ 52° 13°/ 11°
0%
Sunday
Sunny
58°14°
0%

Day: Mostly sunny. A chance of showers with a slight chance of thunderstorms this morning, then a chance of showers and thunderstorms this afternoon. Highs in the 70s to mid 80s. Temperature falling into the mid 70s this afternoon. Light winds. Chance of rain 50 percent.

Night: Mostly cloudy. A chance of thunderstorms in the evening. A chance of showers. A slight chance of thunderstorms after midnight. Lows in the upper 50s and 60s. Light winds. Chance of rain 40 percent.

Happy Valley, TN

Today
Thunderstorms
88°/ 68° 31°/ 20°
40%
Tuesday
Thunderstorms
88°/ 65° 31°/ 18°
90%
Wednesday
Thunderstorms
78°/ 62° 26°/ 17°
100%
Thursday
Thunderstorms
75°/ 58° 24°/ 14°
50%
Friday
Rain Showers
78°/ 52° 26°/ 11°
20%
Saturday
Sunny
78°/ 52° 26°/ 11°
0%
Sunday
Sunny
78°26°
0%

Day: Mostly sunny. A slight chance of showers this morning and early afternoon. A slight chance of thunderstorms early this afternoon, then a chance of showers and thunderstorms late. Highs in the upper 80s to lower 90s. Light winds. Chance of rain 40 percent.

Night: Mostly cloudy. A chance of thunderstorms in the evening. A chance of showers. A slight chance of thunderstorms after midnight. Lows in the upper 60s. Light winds. Chance of rain 40 percent.

Barbourville, KY

Today
Thunderstorms
90°/ 65° 32°/ 18°
80%
Tuesday
Thunderstorms
80°/ 62° 27°/ 17°
50%
Wednesday
Thunderstorms
75°/ 58° 24°/ 14°
70%
Thursday
Cloudy
75°/ 55° 24°/ 13°
0%
Friday
Cloudy
72°/ 48° 22°/
0%
Sat Night
Clear
48°
0%
Sunday
Partly Cloudy
75°24°
0%

Day: Partly sunny late this morning, then partly cloudy with a chance of showers and thunderstorms this afternoon. Hot with highs around 90. Light and variable winds, becoming southwest around 5 mph this afternoon. Chance of rain 50 percent.

Night: Showers with a chance of thunderstorms in the evening, then showers likely with a slight chance of thunderstorms overnight. Patchy valley fog late. Humid with lows in the mid 60s. Light and variable winds. Chance of rain 80 percent.

Names listed above may include county names.

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