Unionville, TN Weather & Growing Conditions
This Afternoon
100°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Sunny, with a high near 100. Heat index values as high as 99. Northwest wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 100°F | Slight Chance Showers And Thunderstorms | 5 mph NW | 18% |
| Tonight | 70°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph SSE | 19% |
| Sunday | 98°F | Sunny then Slight Chance Showers And Thunderstorms | 5 mph SW | 18% |
| Sunday Night | 71°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph S | 15% |
| Monday | 97°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph WSW | 31% |
| Monday Night | 67°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 40% |
| Tuesday | 92°F | Mostly Sunny then Showers And Thunderstorms Likely | 0 to 5 mph NNE | 58% |
| Tuesday Night | 64°F | Showers And Thunderstorms Likely | 0 to 5 mph N | 58% |
| Wednesday | 85°F | Chance Rain Showers | 5 mph NNW | 42% |
| Wednesday Night | 61°F | Chance Showers And Thunderstorms | 0 to 5 mph N | 31% |
| Thursday | 83°F | Mostly Sunny | 0 to 5 mph N | 12% |
| Thursday Night | 58°F | Partly Cloudy | 0 to 5 mph NNE | 10% |
| Friday | 84°F | Mostly Sunny | 0 to 10 mph N | 5% |
| Friday Night | 57°F | Partly Cloudy | 5 to 10 mph NNE | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Unionville, TN
Last spring frost
Apr 14
First fall frost
Oct 25
Growing season
192 days
Hardiness zone
7b
Explore more for Unionville, TN: full frost dates · planting calendar · Tennessee frost dates
Climate data from the nearest NOAA station, Christiana 5W, Tn (7.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.