Westminster, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Westminster, a city in Carroll County, Maryland.
Tonight
66°F
Mostly Cloudy then Slight Chance Rain Showers
A slight chance of rain showers between midnight and 2am. Mostly cloudy, with a low around 66. Southeast wind around 12 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Westminster
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 66°F | Mostly Cloudy then Slight Chance Rain Showers | 12 mph SE | 16% |
| Sunday | 80°F | Rain Showers Likely | 9 to 13 mph S | 59% |
| Sunday Night | 59°F | Showers And Thunderstorms Likely | 2 to 9 mph NW | 59% |
| Monday | 69°F | Mostly Cloudy then Chance Rain Showers | 12 mph NE | 27% |
| Monday Night | 54°F | Chance Rain Showers | 10 mph NE | 51% |
| Tuesday | 63°F | Rain Showers Likely | 9 to 14 mph NE | 63% |
| Tuesday Night | 51°F | Rain Showers Likely | 12 mph NE | 62% |
| Wednesday | 60°F | Chance Rain Showers | 12 mph NE | 48% |
| Wednesday Night | 51°F | Chance Rain Showers | 8 to 12 mph NE | 31% |
| Thursday | 60°F | Slight Chance Rain Showers | 12 mph NE | 24% |
| Thursday Night | 49°F | Slight Chance Rain Showers | 5 to 8 mph N | 24% |
| Friday | 65°F | Chance Rain Showers | 10 mph N | 28% |
| Friday Night | 50°F | Chance Rain Showers | 5 to 9 mph N | 25% |
| Saturday | 68°F | Slight Chance Rain Showers | 10 mph N | 17% |
Forecast source: National Weather Service (api.weather.gov) for Westminster (39.580, -77.008). Updated through the day.
Growing snapshot for Westminster
Last spring frost
Apr 19
First fall frost
Oct 25
Growing season
188 days
Hardiness zone
7a
More local growing data for Westminster: nearby ZIP 21157 weather · frost dates · planting calendar · Maryland frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Millers 4 Ne, Md (15.2 mi from Westminster). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.