Harman US

Garrison, MD Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Garrison, a community in Baltimore County, Maryland.

Overnight
58°F
Partly Cloudy
Partly cloudy, with a low around 58. Northeast wind around 9 mph.

7-day forecast for Garrison

WhenTempForecastWindPrecip
Overnight 58°F Partly Cloudy 9 mph NE 0%
Saturday 78°F Partly Sunny 5 to 9 mph NE 6%
Saturday Night 64°F Slight Chance Rain Showers 8 mph SE 22%
Sunday 82°F Rain Showers Likely then Slight Chance Showers And Thunderstorms 7 to 12 mph S 61%
Sunday Night 59°F Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 3 to 12 mph NW 67%
Monday 70°F Chance Rain Showers 8 to 12 mph N 33%
Monday Night 54°F Chance Rain Showers 7 to 10 mph NE 42%
Tuesday 63°F Rain Showers Likely 10 to 14 mph NE 56%
Tuesday Night 52°F Chance Rain Showers 14 mph NE 53%
Wednesday 61°F Chance Rain Showers 15 mph NE 41%
Wednesday Night 52°F Chance Rain Showers 14 mph NE 42%
Thursday 63°F Chance Rain Showers 14 mph NE 42%
Thursday Night 51°F Chance Rain Showers 7 to 12 mph N 34%
Friday 67°F Chance Rain Showers 12 mph N 25%

Forecast source: National Weather Service (api.weather.gov) for Garrison (39.402, -76.752). Updated through the day.

Growing snapshot for Garrison

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

More local growing data for Garrison: nearby ZIP 21208 weather · frost dates · planting calendar · Maryland frost dates

Nearby towns & communities

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Climate data from the nearest NOAA station, Cylburn, Md (4.3 mi from Garrison). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.