Garrison, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Garrison, a community in Baltimore County, Maryland.
This Afternoon
71°F
Sunny
Sunny. High near 71, with temperatures falling to around 64 in the afternoon. Southeast wind around 7 mph.
7-day forecast for Garrison
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Sunny | 7 mph SE | 2% |
| Tonight | 52°F | Mostly Clear then Patchy Fog | 6 mph S | 2% |
| Wednesday | 74°F | Patchy Fog then Mostly Sunny | 2 to 10 mph S | 2% |
| Wednesday Night | 61°F | Mostly Cloudy then Chance Light Rain | 8 mph S | 36% |
| Thursday | 73°F | Light Rain Likely | 7 to 10 mph S | 62% |
| Thursday Night | 61°F | Light Rain Likely | 2 to 6 mph SW | 58% |
| Friday | 70°F | Rain Likely | 5 mph NW | 63% |
| Friday Night | 51°F | Light Rain Likely | 2 to 7 mph NW | 63% |
| Saturday | 64°F | Mostly Sunny | 7 to 10 mph NW | 13% |
| Saturday Night | 42°F | Partly Cloudy | 6 to 9 mph NW | 13% |
| Sunday | 61°F | Mostly Sunny | 6 to 9 mph NW | 6% |
| Sunday Night | 41°F | Slight Chance Light Rain | 6 to 9 mph W | 22% |
| Monday | 60°F | Slight Chance Light Rain | 10 to 15 mph NW | 22% |
| Monday Night | 40°F | Slight Chance Light Rain | 6 to 10 mph W | 17% |
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 Nov 4, 2026.