Regional Forecast — Cumberland Plateau & Tennessee Valley

Widespread thunderstorms are expected across the Cumberland Plateau and Tennessee Valley through Memorial Day.

Thursday: Showers and possibly a thunderstorm, mainly before 4–5 pm, then a chance of showers and thunderstorms after that. Cumberland Plateau high near 74, Tennessee Valley high near 78. Patchy fog before 9 am in the Cumberland Plateau. Calm to south winds 5 mph. Chance of precipitation: 90% Cumberland Plateau, 90% Tennessee Valley. New rainfall amounts between one-quarter and one-half inch possible.

Thursday Night: Showers and thunderstorms continuing overnight. Cumberland Plateau low around 60 with south-southeast winds around 5 mph. Tennessee Valley low around 61. Chance of precipitation: 70% Cumberland Plateau, 60% Tennessee Valley. New rainfall amounts generally between one-tenth and one-quarter inch, higher amounts possible in thunderstorms.

Friday: Showers and thunderstorms, mainly in the afternoon. Cumberland Plateau high near 75, Tennessee Valley high near 80. South winds 5–10 mph with gusts up to 25 mph in the Cumberland Plateau, gusts up to 20 mph in the Tennessee Valley. Chance of precipitation: 90% Cumberland Plateau, 90% Tennessee Valley. New rainfall amounts between one-quarter and one-half inch possible.

Friday Night: Showers and possibly a thunderstorm. Cumberland Plateau low around 61, Tennessee Valley low around 62. South winds 5–10 mph, gusts up to 20 mph in the Cumberland Plateau. Chance of precipitation: 100% Cumberland Plateau, 100% Tennessee Valley.

Saturday: Showers with thunderstorms also possible. Cumberland Plateau high near 78, Tennessee Valley high near 80. South winds 5–10 mph with gusts up to 20 mph. Chance of precipitation: 80% Cumberland Plateau, 90% Tennessee Valley.

Saturday Night: Mostly cloudy with a chance of showers and thunderstorms. Cumberland Plateau low around 61 with south-southwest winds around 5 mph becoming calm. Tennessee Valley low around 61, calm winds. Chance of precipitation: 40% Cumberland Plateau, 50% Tennessee Valley.

Sunday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm in the afternoon. Cumberland Plateau high near 79, Tennessee Valley high near 82. Calm to south winds 5 mph. Chance of precipitation: 90% Cumberland Plateau, 90% Tennessee Valley.

Sunday Night: Showers likely with possible thunderstorms. Cumberland Plateau low around 62, Tennessee Valley low around 63. South winds around 5 mph, becoming calm in the Cumberland Plateau. Chance of precipitation: 70% Cumberland Plateau, 80% Tennessee Valley.

Memorial Day (Monday): Showers and possibly a thunderstorm. Cumberland Plateau high near 78, Tennessee Valley high near 81. Chance of precipitation: 90% for both regions.

Monday Night: Showers and possibly a thunderstorm continuing into early morning. Cumberland Plateau low around 62, Tennessee Valley low around 62. Chance of precipitation: 50% Cumberland Plateau, 80% Tennessee Valley.

May 21 Almanac — Crossville & Rockwood

Temperatures
Crossville: Normal 75° / 54° | Records: 88° (1962) / 35° (1954)
Rockwood: Normal 79° / 55° | Records: 92° (1962) / 40° (1993)

Precipitation Records
Crossville: 1.81″ rain (2012) | 0.0″ snow (2000)
Rockwood: 2.64″ rain (2025) | 0.0″ snow (2025)

Sunrise & Sunset
Crossville: Sunrise 5:30 AM CDT | Sunset 7:44 PM CDT
Rockwood: Sunrise 6:27 AM EDT | Sunset 8:43 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.