Catonsville, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Catonsville, a community in Baltimore County, Maryland.
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. East wind around 7 mph.
7-day forecast for Catonsville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 7 mph E | 1% |
| Tonight | 70°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 2 to 6 mph E | 39% |
| Wednesday | 84°F | Showers And Thunderstorms Likely | 3 to 7 mph SE | 68% |
| Wednesday Night | 72°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 6 mph S | 57% |
| Thursday | 90°F | Mostly Sunny then Chance Showers And Thunderstorms | 6 to 10 mph S | 28% |
| Thursday Night | 73°F | Chance Showers And Thunderstorms | 3 to 9 mph SW | 33% |
| Friday | 90°F | Mostly Sunny then Chance Showers And Thunderstorms | 7 mph SW | 43% |
| Friday Night | 72°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 51% |
| Saturday | 88°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 3 to 7 mph W | 52% |
| Saturday Night | 71°F | Chance Showers And Thunderstorms | 5 mph W | 52% |
| Sunday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 6 mph W | 19% |
| Sunday Night | 73°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph SW | 19% |
| Monday | 91°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 8 mph W | 15% |
| Monday Night | 73°F | Slight Chance Showers And Thunderstorms | 6 mph W | 18% |
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 Aug 4, 2026.