Harman US

Jefferson, MD Weather & Growing Conditions

Overnight
58°F
Partly Cloudy
Partly cloudy, with a low around 58. Northeast wind around 8 mph.

7-day forecast

WhenTempForecastWindPrecip
Overnight 58°F Partly Cloudy 8 mph NE 0%
Saturday 77°F Partly Sunny 3 to 7 mph NE 11%
Saturday Night 64°F Mostly Cloudy then Slight Chance Rain Showers 5 to 10 mph SE 17%
Sunday 82°F Rain Showers Likely 6 to 12 mph S 55%
Sunday Night 59°F Showers And Thunderstorms Likely 3 to 10 mph NW 73%
Monday 68°F Chance Rain Showers 10 mph NE 42%
Monday Night 54°F Chance Rain Showers 6 to 9 mph NE 52%
Tuesday 62°F Rain Showers Likely 12 mph NE 67%
Tuesday Night 51°F Rain Showers Likely 10 to 14 mph NE 67%
Wednesday 59°F Chance Rain Showers 14 mph NE 53%
Wednesday Night 51°F Chance Showers And Thunderstorms 13 mph NE 45%
Thursday 61°F Chance Showers And Thunderstorms 13 mph NE 44%
Thursday Night 50°F Chance Showers And Thunderstorms 5 to 9 mph N 38%
Friday 66°F Slight Chance Rain Showers 10 mph N 21%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Jefferson, MD

Last spring frost
Apr 2
First fall frost
Nov 6
Growing season
218 days
Hardiness zone
7b

Explore more for Jefferson, MD: full frost dates · planting calendar · Maryland frost dates

Climate data from the nearest NOAA station, Frederick Police Brks, Md (7.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.