Aberdeen Proving Ground, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Aberdeen Proving Ground, a community in Harford County, Maryland.
Today
74°F
Patchy Fog then Mostly Sunny
Patchy fog before 9am. Mostly sunny. High near 74, with temperatures falling to around 68 in the afternoon. South wind 1 to 8 mph.
7-day forecast for Aberdeen Proving Ground
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Patchy Fog then Mostly Sunny | 1 to 8 mph S | 2% |
| Tonight | 59°F | Mostly Cloudy | 5 mph S | 10% |
| Thursday | 73°F | Chance Rain Showers | 6 to 9 mph S | 50% |
| Thursday Night | 60°F | Rain Showers Likely | 1 to 5 mph SW | 72% |
| Friday | 72°F | Light Rain | 3 mph N | 75% |
| Friday Night | 48°F | Light Rain Likely | 1 to 5 mph NW | 60% |
| Saturday | 66°F | Mostly Sunny | 5 to 9 mph NW | 7% |
| Saturday Night | 41°F | Partly Cloudy | 7 mph NW | 7% |
| Sunday | 63°F | Mostly Sunny | 6 to 9 mph NW | 3% |
| Sunday Night | 39°F | Mostly Clear | 6 mph W | 7% |
| Monday | 61°F | Sunny | 7 to 12 mph W | 7% |
| Monday Night | 38°F | Mostly Clear | 6 mph W | 4% |
| Tuesday | 66°F | Sunny | 3 to 9 mph W | 2% |
| Tuesday Night | 39°F | Mostly Clear | 6 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Aberdeen Proving Ground (39.454, -76.134). Updated through the day.
Growing snapshot for Aberdeen Proving Ground
Last spring frost
Apr 10
First fall frost
Oct 30
Growing season
201 days
Hardiness zone
7b
More local growing data for Aberdeen Proving Ground: nearby ZIP 21005 weather · frost dates · planting calendar · Maryland frost dates
Nearby towns & communities
Aberdeen
Abingdon
Bel Air
Bel Air North
Bel Air South
Darlington
Edgewood
Fallston
Havre de Grace
Jarrettsville
Joppatowne
Perryman
Pylesville
Riverside
Climate data from the nearest NOAA station, Aberdeen Phillips Fld, Md (3.2 mi from Aberdeen Proving Ground). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.