Lewistown, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lewistown, a community in Frederick County, Maryland.
Tonight
59°F
Partly Cloudy
Partly cloudy, with a low around 59. Northeast wind around 9 mph.
7-day forecast for Lewistown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 59°F | Partly Cloudy | 9 mph NE | 2% |
| Saturday | 76°F | Partly Sunny | 9 mph E | 5% |
| Saturday Night | 67°F | Mostly Cloudy then Scattered Rain Showers | 5 to 8 mph SE | 30% |
| Sunday | 80°F | Showers And Thunderstorms | 8 to 14 mph S | 75% |
| Sunday Night | 63°F | Showers And Thunderstorms | 3 to 10 mph NW | 75% |
| Monday | 71°F | Chance Rain Showers | 8 to 13 mph NE | 39% |
| Monday Night | 59°F | Rain Showers Likely | 7 to 10 mph NE | 57% |
| Tuesday | 63°F | Rain Showers Likely | 12 mph NE | 71% |
| Tuesday Night | 54°F | Rain Showers Likely | 13 mph NE | 71% |
| Wednesday | 59°F | Rain Showers Likely | 9 to 13 mph NE | 56% |
| Wednesday Night | 55°F | Chance Showers And Thunderstorms | 9 to 13 mph NE | 52% |
| Thursday | 62°F | Chance Showers And Thunderstorms | 7 to 13 mph NE | 51% |
| Thursday Night | 54°F | Chance Rain Showers | 7 mph N | 37% |
| Friday | 67°F | Slight Chance Rain Showers | 7 mph N | 24% |
Forecast source: National Weather Service (api.weather.gov) for Lewistown (39.540, -77.421). Updated through the day.
Growing snapshot for Lewistown
Last spring frost
Apr 14
First fall frost
Oct 30
Growing season
197 days
Hardiness zone
7a
More local growing data for Lewistown: nearby ZIP 21788 weather · frost dates · planting calendar · Maryland frost dates
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Climate data from the nearest NOAA station, Catoctin Mtn Park, Md (5.3 mi from Lewistown). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.