Harman US

Jefferson, MD Weather & Growing Conditions

This Afternoon
77°F
Mostly Cloudy
Mostly cloudy, with a high near 77. Southeast wind around 8 mph.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 77°F Mostly Cloudy 8 mph SE 4%
Tonight 65°F Mostly Cloudy then Isolated Rain Showers 7 to 10 mph SE 20%
Sunday 83°F Chance Showers And Thunderstorms 9 to 13 mph S 70%
Sunday Night 60°F Chance Showers And Thunderstorms 2 to 8 mph W 70%
Monday 71°F Chance Rain Showers 8 to 12 mph NE 35%
Monday Night 57°F Rain Showers Likely 6 to 9 mph NE 56%
Tuesday 64°F Showers And Thunderstorms Likely 9 to 14 mph NE 70%
Tuesday Night 53°F Showers And Thunderstorms Likely 12 mph NE 70%
Wednesday 60°F Chance Rain Showers 13 mph NE 53%
Wednesday Night 52°F Chance Rain Showers 9 to 13 mph NE 37%
Thursday 61°F Chance Rain Showers 9 to 13 mph NE 25%
Thursday Night 51°F Slight Chance Rain Showers 5 to 9 mph N 24%
Friday 66°F Chance Rain Showers 12 mph N 27%
Friday Night 51°F Chance Rain Showers 7 to 12 mph N 25%

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.