New Windsor, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Windsor, a town in Carroll County, Maryland.
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. East wind around 3 mph.
7-day forecast for New Windsor
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 3 mph E | 0% |
| Tonight | 67°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 0 to 3 mph E | 24% |
| Wednesday | 83°F | Showers And Thunderstorms Likely | 1 to 5 mph SE | 72% |
| Wednesday Night | 71°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 3 mph S | 62% |
| Thursday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 9 mph S | 39% |
| Thursday Night | 71°F | Chance Showers And Thunderstorms | 1 to 7 mph SW | 39% |
| Friday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 46% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 0 to 3 mph W | 46% |
| Saturday | 86°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 40% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 0 to 3 mph SW | 40% |
| Sunday | 87°F | Mostly Sunny | 0 to 5 mph W | 14% |
| Sunday Night | 70°F | Partly Cloudy | 0 to 3 mph W | 14% |
| Monday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 7 mph W | 16% |
| Monday Night | 70°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 1 to 6 mph W | 16% |
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 Aug 4, 2026.