Catonsville, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Catonsville, a community in Baltimore County, Maryland.
This Afternoon
78°F
Partly Sunny
Partly sunny, with a high near 78. East wind around 7 mph.
7-day forecast for Catonsville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 78°F | Partly Sunny | 7 mph E | 6% |
| Tonight | 65°F | Slight Chance Rain Showers | 8 mph SE | 21% |
| Sunday | 82°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 7 to 10 mph S | 50% |
| Sunday Night | 62°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 to 10 mph W | 68% |
| Monday | 71°F | Chance Rain Showers | 10 mph NE | 33% |
| Monday Night | 57°F | Chance Rain Showers | 7 to 12 mph NE | 42% |
| Tuesday | 64°F | Rain Showers Likely | 12 to 15 mph NE | 57% |
| Tuesday Night | 54°F | Chance Rain Showers | 15 mph NE | 53% |
| Wednesday | 62°F | Chance Rain Showers | 15 mph NE | 41% |
| Wednesday Night | 54°F | Chance Rain Showers | 15 mph NE | 42% |
| Thursday | 63°F | Chance Rain Showers | 15 mph NE | 42% |
| Thursday Night | 52°F | Chance Rain Showers | 8 to 13 mph N | 35% |
| Friday | 67°F | Slight Chance Rain Showers | 10 mph N | 24% |
| Friday Night | 53°F | Slight Chance Rain Showers | 9 mph N | 17% |
Forecast source: National Weather Service (api.weather.gov) for Catonsville (39.264, -76.742). Updated through the day.
Growing snapshot for Catonsville
Last spring frost
Mar 24
First fall frost
Nov 21
Growing season
244 days
Hardiness zone
7b
More local growing data for Catonsville: nearby ZIP 21228 weather · frost dates · planting calendar · Maryland frost dates
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Climate data from the nearest NOAA station, Md Sci Ctr Baltimore, Md (7.5 mi from Catonsville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.