Jefferson, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jefferson, a community in Frederick County, Maryland.
Overnight
51°F
Mostly Clear
Mostly clear, with a low around 51. South wind around 5 mph.
7-day forecast for Jefferson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 51°F | Mostly Clear | 5 mph S | 1% |
| Wednesday | 74°F | Mostly Sunny | 5 to 13 mph S | 1% |
| Wednesday Night | 61°F | Mostly Cloudy then Rain Showers Likely | 6 to 9 mph S | 72% |
| Thursday | 74°F | Rain Showers Likely | 6 to 10 mph S | 59% |
| Thursday Night | 60°F | Chance Rain Showers | 1 to 6 mph W | 47% |
| Friday | 69°F | Chance Light Rain | 3 mph N | 48% |
| Friday Night | 49°F | Slight Chance Light Rain then Partly Cloudy | 1 to 6 mph NW | 21% |
| Saturday | 63°F | Mostly Sunny | 6 to 16 mph NW | 8% |
| Saturday Night | 41°F | Partly Cloudy | 7 to 12 mph NW | 8% |
| Sunday | 60°F | Mostly Sunny | 8 to 13 mph NW | 2% |
| Sunday Night | 40°F | Mostly Clear | 5 to 8 mph W | 4% |
| Monday | 60°F | Sunny | 8 to 16 mph W | 5% |
| Monday Night | 38°F | Mostly Clear | 2 to 7 mph W | 5% |
| Tuesday | 63°F | Sunny | 2 to 12 mph W | 2% |
Forecast source: National Weather Service (api.weather.gov) for Jefferson (39.365, -77.541). Updated through the day.
Growing snapshot for Jefferson
Last spring frost
Apr 2
First fall frost
Nov 6
Growing season
218 days
Hardiness zone
7b
More local growing data for Jefferson: nearby ZIP 21755 weather · frost dates · planting calendar · Maryland frost dates
Nearby towns & communities
Adamstown
Bagtown
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Bartonsville
Braddock Heights
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Buckeystown
Burkittsville
Emmitsburg
Frederick
Garretts Mill
Graceham
Green Valley
Lewistown
Libertytown
Linganore
Middletown
Monrovia
Mount Airy
Myersville
New Market
Point of Rocks
Rosemont
Sabillasville
Sandy Hook
Spring Ridge
Thurmont
Union Bridge
Urbana
Walkersville
Climate data from the nearest NOAA station, Frederick Police Brks, Md (7.9 mi from Jefferson). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.