Linthicum, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Linthicum, a community in Anne Arundel County, Maryland.
This Afternoon
85°F
Partly Sunny
Partly sunny, with a high near 85. North wind around 10 mph.
7-day forecast for Linthicum
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 85°F | Partly Sunny | 10 mph N | 10% |
| Tonight | 61°F | Partly Cloudy | 9 mph N | 10% |
| Saturday | 79°F | Mostly Sunny | 10 mph NE | 5% |
| Saturday Night | 67°F | Mostly Cloudy then Isolated Rain Showers | 9 mph SE | 20% |
| Sunday | 83°F | Chance Rain Showers | 8 to 13 mph S | 47% |
| Sunday Night | 65°F | Showers And Thunderstorms Likely | 6 to 10 mph W | 71% |
| Monday | 75°F | Chance Rain Showers | 8 to 12 mph NE | 43% |
| Monday Night | 60°F | Chance Rain Showers | 10 mph NE | 48% |
| Tuesday | 68°F | Chance Rain Showers | 12 to 15 mph NE | 54% |
| Tuesday Night | 56°F | Chance Rain Showers | 12 to 15 mph NE | 54% |
| Wednesday | 65°F | Chance Rain Showers | 15 mph NE | 48% |
| Wednesday Night | 56°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 48% |
| Thursday | 66°F | Chance Showers And Thunderstorms | 13 mph NE | 41% |
| Thursday Night | 55°F | Chance Showers And Thunderstorms | 6 to 12 mph N | 35% |
Forecast source: National Weather Service (api.weather.gov) for Linthicum (39.210, -76.665). Updated through the day.
Growing snapshot for Linthicum
Last spring frost
Apr 10
First fall frost
Oct 31
Growing season
204 days
Hardiness zone
7b
More local growing data for Linthicum: nearby ZIP 21090 weather · frost dates · planting calendar · Maryland frost dates
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Climate data from the nearest NOAA station, Baltimore Wash Intl Ap, Md (3.1 mi from Linthicum). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.