Fallston, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fallston, a community in Harford County, Maryland.
This Afternoon
68°F
Mostly Sunny
Mostly sunny, with a high near 68. South wind around 7 mph.
7-day forecast for Fallston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Mostly Sunny | 7 mph S | 2% |
| Tonight | 51°F | Partly Cloudy | 5 mph S | 3% |
| Wednesday | 72°F | Patchy Fog then Mostly Sunny | 2 to 10 mph S | 2% |
| Wednesday Night | 60°F | Mostly Cloudy then Chance Light Rain | 8 mph S | 28% |
| Thursday | 72°F | Light Rain Likely | 9 mph S | 63% |
| Thursday Night | 61°F | Light Rain Likely | 2 to 7 mph S | 66% |
| Friday | 69°F | Rain Likely | 5 mph NW | 68% |
| Friday Night | 51°F | Light Rain Likely | 2 to 7 mph NW | 68% |
| Saturday | 64°F | Mostly Sunny | 8 to 12 mph NW | 12% |
| Saturday Night | 42°F | Partly Cloudy | 8 mph NW | 12% |
| Sunday | 61°F | Mostly Sunny | 6 to 9 mph NW | 6% |
| Sunday Night | 41°F | Partly Cloudy then Slight Chance Light Rain | 5 to 8 mph W | 16% |
| Monday | 60°F | Slight Chance Light Rain | 9 to 13 mph NW | 16% |
| Monday Night | 41°F | Mostly Clear | 5 to 8 mph W | 10% |
Forecast source: National Weather Service (api.weather.gov) for Fallston (39.534, -76.439). Updated through the day.
Growing snapshot for Fallston
Last spring frost
Apr 10
First fall frost
Oct 30
Growing season
201 days
Hardiness zone
7b
More local growing data for Fallston: nearby ZIP 21047 weather · frost dates · planting calendar · Maryland frost dates
Nearby towns & communities
Aberdeen
Aberdeen Proving Ground
Abingdon
Bel Air
Bel Air North
Bel Air South
Darlington
Edgewood
Havre de Grace
Jarrettsville
Joppatowne
Perryman
Pylesville
Riverside
Climate data from the nearest NOAA station, Aberdeen Phillips Fld, Md (14.8 mi from Fallston). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.