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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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
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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.