Thurmont, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Thurmont, a town in Frederick County, Maryland.
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. East wind around 3 mph.
7-day forecast for Thurmont
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 3 mph E | 0% |
| Tonight | 68°F | Mostly Cloudy then Slight Chance Rain Showers | 0 to 3 mph SE | 22% |
| Wednesday | 83°F | Showers And Thunderstorms Likely | 0 to 3 mph E | 72% |
| Wednesday Night | 71°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 mph S | 63% |
| Thursday | 88°F | Partly Sunny then Chance Showers And Thunderstorms | 6 mph S | 50% |
| Thursday Night | 71°F | Chance Showers And Thunderstorms | 1 to 5 mph SW | 50% |
| Friday | 88°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 50% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 0 to 3 mph SW | 50% |
| Saturday | 86°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 43% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 0 to 3 mph W | 43% |
| Sunday | 87°F | Mostly Sunny | 0 to 3 mph W | 13% |
| Sunday Night | 71°F | Partly Cloudy | 2 mph SW | 13% |
| Monday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 7 mph W | 15% |
| Monday Night | 71°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 to 6 mph W | 15% |
Forecast source: National Weather Service (api.weather.gov) for Thurmont (39.620, -77.408). Updated through the day.
Growing snapshot for Thurmont
Last spring frost
Apr 14
First fall frost
Oct 30
Growing season
197 days
Hardiness zone
7a
More local growing data for Thurmont: nearby ZIP 21788 weather · frost dates · planting calendar · Maryland frost dates
Nearby towns & communities
Adamstown
Bagtown
Ballenger Creek
Bartonsville
Braddock Heights
Brunswick
Buckeystown
Burkittsville
Emmitsburg
Frederick
Garretts Mill
Graceham
Green Valley
Jefferson
Lewistown
Libertytown
Linganore
Middletown
Monrovia
Mount Airy
Myersville
New Market
Point of Rocks
Rosemont
Sabillasville
Sandy Hook
Spring Ridge
Union Bridge
Urbana
Walkersville
Climate data from the nearest NOAA station, Catoctin Mtn Park, Md (5.3 mi from Thurmont). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.