Castalian Springs, TN Weather & Growing Conditions
Overnight
62°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy, with a low around 62. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 62°F | Showers And Thunderstorms | 15 mph S | 93% |
| Wednesday | 72°F | Showers And Thunderstorms | 5 to 15 mph SSW | 98% |
| Wednesday Night | 45°F | Areas Of Fog | 0 to 5 mph WSW | 1% |
| Thursday | 72°F | Areas Of Fog then Mostly Sunny | 0 to 5 mph WSW | 0% |
| Thursday Night | 41°F | Areas Of Fog | 0 mph | 0% |
| Friday | 68°F | Areas Of Fog then Mostly Sunny | 0 to 10 mph NNW | 0% |
| Friday Night | 37°F | Partly Cloudy | 5 to 10 mph NNW | 0% |
| Saturday | 59°F | Mostly Sunny | 5 to 10 mph N | 0% |
| Saturday Night | 31°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Sunday | 59°F | Mostly Sunny | 0 to 5 mph N | 1% |
| Sunday Night | 30°F | Mostly Clear | 0 to 5 mph N | 1% |
| Monday | 62°F | Sunny | 0 to 5 mph SW | 0% |
| Monday Night | 31°F | Clear | 0 mph | 1% |
| Tuesday | 68°F | Sunny | 0 to 5 mph W | 1% |
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 Nov 4, 2026.