La Plata, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for La Plata, a town in Charles County, Maryland.
This Afternoon
85°F
Partly Sunny
Partly sunny, with a high near 85. North wind around 9 mph.
7-day forecast for La Plata
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 85°F | Partly Sunny | 9 mph N | 10% |
| Tonight | 63°F | Partly Cloudy | 8 mph NE | 10% |
| Saturday | 80°F | Partly Sunny | 9 mph NE | 10% |
| Saturday Night | 66°F | Mostly Cloudy | 3 to 8 mph SE | 10% |
| Sunday | 84°F | Partly Sunny then Chance Rain Showers | 3 to 12 mph S | 25% |
| Sunday Night | 67°F | Showers And Thunderstorms Likely | 5 to 10 mph W | 59% |
| Monday | 78°F | Chance Rain Showers | 6 to 10 mph N | 42% |
| Monday Night | 63°F | Chance Rain Showers | 10 mph NE | 52% |
| Tuesday | 69°F | Rain Showers Likely | 12 to 17 mph NE | 59% |
| Tuesday Night | 58°F | Rain Showers Likely | 12 to 17 mph NE | 59% |
| Wednesday | 64°F | Chance Rain Showers | 13 to 16 mph NE | 50% |
| Wednesday Night | 57°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 50% |
| Thursday | 66°F | Chance Showers And Thunderstorms | 12 to 15 mph NE | 44% |
| Thursday Night | 56°F | Chance Showers And Thunderstorms | 6 to 13 mph N | 34% |
Forecast source: National Weather Service (api.weather.gov) for La Plata (38.543, -76.970). Updated through the day.
Growing snapshot for La Plata
Last spring frost
Apr 17
First fall frost
Oct 27
Growing season
195 days
Hardiness zone
7b
More local growing data for La Plata: nearby ZIP 20646 weather · frost dates · planting calendar · Maryland frost dates
Nearby towns & communities
Benedict
Bensville
Brandywine
Bryans Road
Bryantown
Charlotte Hall
Cobb Island
Golden Beach
Hughesville
Indian Head
Pomfret
Port Tobacco Village
Potomac Heights
Rock Point
Waldorf
Climate data from the nearest NOAA station, Mechanicsville 5 Ne, Md (14.9 mi from La Plata). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.