Harman US

Jarrettsville, MD Weather & Growing Conditions

Overnight
57°F
Partly Cloudy
Partly cloudy, with a low around 57. North wind around 9 mph.

7-day forecast

WhenTempForecastWindPrecip
Overnight 57°F Partly Cloudy 9 mph N 2%
Saturday 76°F Mostly Sunny 10 mph E 5%
Saturday Night 64°F Mostly Cloudy then Scattered Rain Showers 8 mph SE 30%
Sunday 78°F Rain Showers Likely 8 to 14 mph S 69%
Sunday Night 63°F Showers And Thunderstorms Likely 6 to 9 mph W 70%
Monday 71°F Chance Rain Showers 9 to 13 mph NE 40%
Monday Night 57°F Chance Rain Showers 8 to 12 mph NE 44%
Tuesday 63°F Chance Rain Showers 14 mph NE 50%
Tuesday Night 53°F Chance Rain Showers 15 mph NE 50%
Wednesday 61°F Chance Rain Showers 14 mph NE 44%
Wednesday Night 53°F Chance Showers And Thunderstorms 14 mph NE 45%
Thursday 62°F Chance Showers And Thunderstorms 10 to 14 mph NE 42%
Thursday Night 53°F Chance Showers And Thunderstorms 7 to 10 mph N 38%
Friday 67°F Slight Chance Rain Showers 10 mph N 24%

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

Growing snapshot for Jarrettsville, MD

Last spring frost
Apr 3
First fall frost
Nov 6
Growing season
217 days
Hardiness zone
7a

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

Climate data from the nearest NOAA station, Conowingo Dam, Md (15.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.