Bel Air South, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bel Air South, a community in Harford County, Maryland.
Today
78°F
Partly Sunny
Partly sunny, with a high near 78. East wind around 7 mph.
7-day forecast for Bel Air South
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Partly Sunny | 7 mph E | 6% |
| Tonight | 63°F | Cloudy then Chance Rain Showers | 5 to 8 mph SE | 27% |
| Sunday | 80°F | Rain Showers Likely | 7 to 13 mph S | 59% |
| Sunday Night | 60°F | Showers And Thunderstorms Likely | 3 to 12 mph W | 70% |
| Monday | 71°F | Chance Rain Showers | 8 to 12 mph N | 30% |
| Monday Night | 54°F | Chance Rain Showers | 7 to 10 mph NE | 40% |
| Tuesday | 64°F | Chance Rain Showers | 10 to 15 mph NE | 47% |
| Tuesday Night | 52°F | Chance Rain Showers | 12 to 15 mph NE | 46% |
| Wednesday | 63°F | Chance Rain Showers | 14 to 17 mph NE | 37% |
| Wednesday Night | 53°F | Chance Rain Showers | 13 to 16 mph NE | 37% |
| Thursday | 64°F | Chance Rain Showers | 15 mph NE | 37% |
| Thursday Night | 51°F | Chance Rain Showers | 8 to 14 mph N | 33% |
| Friday | 68°F | Chance Rain Showers | 12 mph N | 28% |
| Friday Night | 51°F | Slight Chance Rain Showers | 7 to 10 mph N | 19% |
Forecast source: National Weather Service (api.weather.gov) for Bel Air South (39.508, -76.309). Updated through the day.
Growing snapshot for Bel Air South
Last spring frost
Apr 10
First fall frost
Oct 30
Growing season
201 days
Hardiness zone
7b
More local growing data for Bel Air South: nearby ZIP 21015 weather · frost dates · planting calendar · Maryland frost dates
Nearby towns & communities
Aberdeen
Aberdeen Proving Ground
Abingdon
Bel Air
Bel Air North
Darlington
Edgewood
Fallston
Havre de Grace
Jarrettsville
Joppatowne
Perryman
Pylesville
Riverside
Climate data from the nearest NOAA station, Aberdeen Phillips Fld, Md (8.2 mi from Bel Air South). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.