Regional Forecast — Cumberland Plateau & Tennessee Valley

The Cumberland Plateau and Tennessee Valley will see frequent thunderstorms with high rain chances through Sunday.

Wednesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm later in the afternoon. Cumberland Plateau high near 82, Tennessee Valley high near 88. Calm wind becoming west-southwest to southwest around 5 mph in the afternoon. Chance of precipitation: 90% Cumberland Plateau, 80% Tennessee Valley. New rainfall amounts between one-quarter and one-half inch possible in the Cumberland Plateau, and between one-tenth and one-quarter inch possible in the Tennessee Valley, with higher amounts in thunderstorms.

Wednesday Night: Showers and thunderstorms likely before early morning, then a chance of showers. Cumberland Plateau low around 61 with patchy fog after 9 pm. Tennessee Valley low around 62. Mostly cloudy to cloudy skies with calm winds. Chance of precipitation 60% for both regions. New rainfall amounts generally less than one-tenth inch, except higher amounts possible in thunderstorms.

Thursday: Showers and thunderstorms likely. Cumberland Plateau: showers and thunderstorms before 2 pm, then showers and possible thunderstorms continuing through the afternoon. Tennessee Valley: showers likely before 11 am, scattered thunderstorms midday, then showers and thunderstorms likely after 4 pm. Cumberland Plateau high near 77, Tennessee Valley high near 82. Patchy fog before 9 am in the Cumberland Plateau. Calm wind becoming north around 5 mph in the Cumberland Plateau. Chance of precipitation: 90% Cumberland Plateau, 60% Tennessee Valley.

Thursday Night: Showers and thunderstorms continuing overnight. Cumberland Plateau low around 61 with south-southeast wind around 5 mph after midnight. Tennessee Valley low around 62 with calm winds. Chance of precipitation 80% for both regions.

Friday: Showers likely, then showers and possibly a thunderstorm. Cumberland Plateau high near 79, Tennessee Valley high near 82. South wind 5–10 mph with gusts up to 25 mph in the Cumberland Plateau and up to 20 mph in the Tennessee Valley. Chance of precipitation 80% for both regions.

Friday Night: Showers and possibly a thunderstorm. Cumberland Plateau low around 62, Tennessee Valley low around 63. South wind 5–10 mph with gusts up to 20 mph in the Cumberland Plateau. Chance of precipitation 90% for both regions.

Saturday: Showers and possibly a thunderstorm. Cumberland Plateau high near 78, Tennessee Valley high near 81. South wind 5–10 mph with gusts up to 20 mph in the Cumberland Plateau. Chance of precipitation 90% for both regions.

Saturday Night: Mostly cloudy with a chance of showers and thunderstorms. Cumberland Plateau low around 62 with south wind around 5 mph becoming calm in the evening. Tennessee Valley low around 62. Chance of precipitation: 50% Cumberland Plateau, 40% Tennessee Valley.

Sunday: Showers and possibly a thunderstorm. Cumberland Plateau high near 80 with a 90% chance of precipitation. Tennessee Valley high near 82 with scattered showers in the morning, then showers and thunderstorms becoming more widespread during the afternoon (80%).

Sunday Night: Showers likely with possible thunderstorms. Cumberland Plateau low around 62, Tennessee Valley low around 63. Mostly cloudy skies. Chance of precipitation: 70% Cumberland Plateau, 80% Tennessee Valley.

May 20 Almanac — Crossville & Rockwood

Temperatures
Crossville: Normal 74° / 54° | Records: 88° (1962) / 35° (2002)
Rockwood: Normal 79° / 55° | Records: 93° (1962) / 37° (1976)

Precipitation Records
Crossville: 1.67″ rain (2005) | 0.0″ snow (2010)
Rockwood: 1.88″ rain (2020) | 0.0″ snow (2025)

Sunrise & Sunset
Crossville: Sunrise 5:31 AM CDT | Sunset 7:43 PM CDT
Rockwood: Sunrise 6:27 AM EDT | Sunset 8:42 PM EDT

Sky & Seasonal Events
Next Full Moon (Blue Moon): May 31, 2026
Crossville: 3:45 AM CDT | Rockwood: 4:45 AM EDT

Summer Solstice: June 21, 2026
Crossville: 3:24 AM CDT | Rockwood: 4:24 AM EDT

Daylight Saving Time Ends: November 1, 2026
Crossville: 2:00 AM CDT | Rockwood: 2:00 AM EDT

Weather information is provided by the National Weather Service in Nashville and Morristown. You can hear the latest forecast on 105.7 The Hog, 94.1 The Vibe (1410 AM), Spirit 101.9, 98.9 The Wolf, and 93.3 The Ranch (580 AM). Stay connected with Weather Reporter Johnny Caudle on social media by following him on Facebook, X, Instagram, Bluesky, and YouTube. You can also click here to send him an email.