Castalia, NC Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Castalia, a town in Franklin County, North Carolina.
Today
83°F
Chance Showers And Thunderstorms
A slight chance of rain showers between 9am and 11am, then a chance of showers and thunderstorms between 11am and 1pm, then showers and thunderstorms. Cloudy. High near 83, with temperatures falling to around 77 in the afternoon. East wind 1 to 6 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Castalia
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Chance Showers And Thunderstorms | 1 to 6 mph E | 81% |
| Tonight | 72°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 mph SE | 72% |
| Wednesday | 86°F | Showers And Thunderstorms Likely | 2 to 6 mph S | 57% |
| Wednesday Night | 71°F | Showers And Thunderstorms Likely | 5 mph S | 57% |
| Thursday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 7 mph S | 33% |
| Thursday Night | 71°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 mph S | 33% |
| Friday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 7 mph SW | 23% |
| Friday Night | 71°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 1 to 5 mph SW | 23% |
| Saturday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 6 mph SW | 20% |
| Saturday Night | 71°F | Slight Chance Showers And Thunderstorms | 1 to 5 mph SW | 20% |
| Sunday | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 mph SW | 26% |
| Sunday Night | 71°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 mph SW | 26% |
| Monday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph SW | 19% |
| Monday Night | 72°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 mph SW | 19% |
Forecast source: National Weather Service (api.weather.gov) for Castalia (36.082, -78.058). Updated through the day.
Growing snapshot for Castalia
Last spring frost
Apr 11
First fall frost
Oct 29
Growing season
201 days
Hardiness zone
8a
More local growing data for Castalia: nearby ZIP 27816 weather · frost dates · planting calendar · North Carolina frost dates
Nearby towns & communities
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Climate data from the nearest NOAA station, Louisburg, Nc (12.9 mi from Castalia). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.