New Windsor, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Windsor, a town in Carroll County, Maryland.
Tonight
55°F
Partly Cloudy
Partly cloudy, with a low around 55. North wind 7 to 10 mph.
7-day forecast for New Windsor
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Partly Cloudy | 7 to 10 mph N | 10% |
| Saturday | 76°F | Mostly Sunny | 9 mph E | 5% |
| Saturday Night | 65°F | Mostly Cloudy then Scattered Rain Showers | 7 to 10 mph SE | 30% |
| Sunday | 79°F | Rain Showers Likely | 9 to 15 mph S | 72% |
| Sunday Night | 62°F | Showers And Thunderstorms Likely | 6 to 10 mph W | 72% |
| Monday | 70°F | Chance Rain Showers | 9 to 13 mph NE | 38% |
| Monday Night | 57°F | Chance Rain Showers | 6 to 9 mph NE | 51% |
| Tuesday | 62°F | Rain Showers Likely | 10 mph NE | 61% |
| Tuesday Night | 52°F | Rain Showers Likely | 12 mph NE | 61% |
| Wednesday | 59°F | Chance Rain Showers | 12 mph NE | 53% |
| Wednesday Night | 52°F | Chance Showers And Thunderstorms | 7 to 10 mph NE | 50% |
| Thursday | 61°F | Chance Showers And Thunderstorms | 10 mph NE | 46% |
| Thursday Night | 52°F | Chance Rain Showers | 2 to 7 mph N | 39% |
| Friday | 66°F | Slight Chance Rain Showers | 5 to 8 mph N | 23% |
Forecast source: National Weather Service (api.weather.gov) for New Windsor (39.543, -77.099). Updated through the day.
Growing snapshot for New Windsor
Last spring frost
Apr 22
First fall frost
Oct 20
Growing season
179 days
Hardiness zone
7a
More local growing data for New Windsor: nearby ZIP 21776 weather · frost dates · planting calendar · Maryland frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Emmitsburg 2 Se, Md (14.7 mi from New Windsor). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.