South Bethany, DE Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Bethany, a town in Sussex County, Delaware.
This Afternoon
83°F
Mostly Sunny
Mostly sunny. High near 83, with temperatures falling to around 77 in the afternoon. Northeast wind around 10 mph.
7-day forecast for South Bethany
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 83°F | Mostly Sunny | 10 mph NE | 8% |
| Tonight | 68°F | Partly Cloudy | 5 to 10 mph NE | 3% |
| Saturday | 74°F | Partly Sunny | 10 to 15 mph NE | 7% |
| Saturday Night | 69°F | Partly Cloudy then Patchy Fog | 10 to 15 mph E | 5% |
| Sunday | 78°F | Patchy Fog then Sunny | 10 to 15 mph SE | 2% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 10 to 15 mph SW | 47% |
| Monday | 75°F | Chance Showers And Thunderstorms | 10 to 20 mph N | 54% |
| Monday Night | 67°F | Chance Showers And Thunderstorms | 15 to 20 mph NE | 42% |
| Tuesday | 72°F | Chance Rain Showers | 20 to 30 mph NE | 53% |
| Tuesday Night | 65°F | Chance Rain Showers | 25 to 30 mph NE | 53% |
| Wednesday | 71°F | Chance Showers And Thunderstorms | 30 mph NE | 51% |
| Wednesday Night | 64°F | Chance Showers And Thunderstorms | 25 to 30 mph NE | 51% |
| Thursday | 69°F | Chance Showers And Thunderstorms | 25 to 30 mph NE | 44% |
| Thursday Night | 61°F | Chance Showers And Thunderstorms | 15 to 25 mph N | 42% |
Forecast source: National Weather Service (api.weather.gov) for South Bethany (38.516, -75.058). Updated through the day.
Growing snapshot for South Bethany
Last spring frost
Mar 29
First fall frost
Nov 14
Growing season
231 days
Hardiness zone
8a
More local growing data for South Bethany: nearby ZIP 19930 weather · frost dates · planting calendar · Delaware frost dates
Nearby towns & communities
Bethany Beach
Bethel
Blades
Bridgeville
Dagsboro
Delmar
Dewey Beach
Ellendale
Farmington
Fenwick Island
Frankford
Georgetown
Greenwood
Henlopen Acres
Laurel
Lewes
Lincoln
Long Neck
Milford
Millsboro
Millville
Milton
Ocean View
Rehoboth Beach
Seaford
Selbyville
Slaughter Beach
Climate data from the nearest NOAA station, Lewes, De (16.7 mi from South Bethany). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.