New Windsor, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Windsor, a town in Carroll County, Maryland.
This Afternoon
70°F
Sunny
Sunny, with a high near 70. South wind around 6 mph.
7-day forecast for New Windsor
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Sunny | 6 mph S | 2% |
| Tonight | 51°F | Mostly Clear | 5 mph SE | 2% |
| Wednesday | 73°F | Mostly Sunny | 3 to 10 mph S | 2% |
| Wednesday Night | 61°F | Mostly Cloudy then Light Rain Likely | 8 mph S | 61% |
| Thursday | 73°F | Light Rain Likely | 5 to 9 mph S | 73% |
| Thursday Night | 60°F | Light Rain Likely | 0 to 5 mph S | 56% |
| Friday | 69°F | Rain Likely | 0 to 3 mph N | 56% |
| Friday Night | 48°F | Chance Light Rain then Partly Cloudy | 2 mph NW | 51% |
| Saturday | 63°F | Mostly Sunny | 2 to 9 mph NW | 12% |
| Saturday Night | 38°F | Partly Cloudy | 2 to 7 mph NW | 12% |
| Sunday | 60°F | Mostly Sunny | 2 to 7 mph W | 7% |
| Sunday Night | 37°F | Partly Cloudy | 3 mph W | 14% |
| Monday | 59°F | Slight Chance Light Rain | 3 to 12 mph W | 16% |
| Monday Night | 37°F | Mostly Clear | 2 to 6 mph W | 9% |
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 Nov 3, 2026.