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.
This Afternoon
69°F
Mostly Sunny
Mostly sunny. High near 69, with temperatures falling to around 63 in the afternoon. South wind around 5 mph.
7-day forecast for Aberdeen Proving Ground
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Mostly Sunny | 5 mph S | 2% |
| Tonight | 51°F | Mostly Clear then Patchy Fog | 2 mph S | 3% |
| Wednesday | 74°F | Patchy Fog then Mostly Sunny | 1 to 7 mph S | 3% |
| Wednesday Night | 59°F | Mostly Cloudy | 5 mph S | 14% |
| Thursday | 74°F | Chance Light Rain | 5 to 9 mph S | 51% |
| Thursday Night | 61°F | Light Rain Likely | 5 mph SW | 73% |
| Friday | 72°F | Rain | 3 mph NW | 76% |
| Friday Night | 50°F | Light Rain | 3 mph NW | 76% |
| Saturday | 68°F | Mostly Sunny | 5 to 8 mph NW | 11% |
| Saturday Night | 40°F | Partly Cloudy | 6 mph NW | 11% |
| Sunday | 63°F | Mostly Sunny | 3 to 7 mph NW | 5% |
| Sunday Night | 39°F | Partly Cloudy then Slight Chance Light Rain | 5 mph W | 17% |
| Monday | 63°F | Slight Chance Light Rain | 6 to 10 mph NW | 17% |
| Monday Night | 40°F | Mostly Clear | 5 mph W | 10% |
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
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Fallston
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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 3, 2026.