Lewistown, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lewistown, a community in Frederick County, Maryland.
Today
77°F
Partly Sunny
Partly sunny, with a high near 77. Northeast wind around 5 mph.
7-day forecast for Lewistown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Partly Sunny | 5 mph NE | 12% |
| Tonight | 66°F | Chance Rain Showers | 3 to 10 mph SE | 29% |
| Sunday | 81°F | Rain Showers Likely | 5 to 12 mph S | 61% |
| Sunday Night | 61°F | Showers And Thunderstorms | 2 to 13 mph NW | 79% |
| Monday | 68°F | Chance Rain Showers | 7 to 13 mph NE | 39% |
| Monday Night | 56°F | Chance Rain Showers | 6 to 9 mph NE | 53% |
| Tuesday | 61°F | Rain Showers Likely | 10 mph NE | 65% |
| Tuesday Night | 53°F | Rain Showers Likely | 10 to 14 mph NE | 65% |
| Wednesday | 59°F | Chance Rain Showers | 10 to 14 mph NE | 50% |
| Wednesday Night | 53°F | Chance Rain Showers | 10 to 14 mph NE | 45% |
| Thursday | 61°F | Chance Rain Showers | 8 to 14 mph NE | 45% |
| Thursday Night | 52°F | Chance Rain Showers | 7 to 10 mph NE | 37% |
| Friday | 66°F | Slight Chance Rain Showers | 10 mph N | 19% |
| Friday Night | 52°F | Slight Chance Rain Showers | 6 to 10 mph N | 16% |
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.