Castalian Springs, TN Weather & Growing Conditions
Today
89°F
Sunny
Sunny, with a high near 89. North northeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Sunny | 5 mph NNE | 5% |
| Tonight | 69°F | Mostly Clear then Patchy Fog | 0 to 5 mph NNE | 6% |
| Wednesday | 90°F | Patchy Fog then Chance Showers And Thunderstorms | 0 mph | 30% |
| Wednesday Night | 70°F | Partly Cloudy then Patchy Fog | 0 mph | 13% |
| Thursday | 92°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SSW | 22% |
| Thursday Night | 72°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph SSE | 23% |
| Friday | 92°F | Chance Showers And Thunderstorms | 5 mph SSW | 35% |
| Friday Night | 71°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 35% |
| Saturday | 90°F | Chance Showers And Thunderstorms | 0 to 5 mph SSW | 52% |
| Saturday Night | 71°F | Chance Showers And Thunderstorms | 0 mph | 52% |
| Sunday | 91°F | Chance Showers And Thunderstorms | 0 to 5 mph SSW | 33% |
| Sunday Night | 72°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 33% |
| Monday | 92°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SSW | 21% |
| Monday Night | 73°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph S | 21% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Castalian Springs, TN
Last spring frost
Apr 16
First fall frost
Oct 23
Growing season
189 days
Hardiness zone
7b
Explore more for Castalian Springs, TN: full frost dates · planting calendar · Tennessee frost dates
Climate data from the nearest NOAA station, Bethpage 1 S, Tn (5.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.