Dundalk, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dundalk, a community in Baltimore County, Maryland.
Today
85°F
Partly Sunny
Partly sunny, with a high near 85. Northeast wind around 7 mph.
7-day forecast for Dundalk
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Partly Sunny | 7 mph NE | 1% |
| Tonight | 71°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 2 to 6 mph E | 36% |
| Wednesday | 85°F | Showers And Thunderstorms Likely | 3 to 8 mph SE | 64% |
| Wednesday Night | 74°F | Chance Showers And Thunderstorms | 3 to 7 mph S | 48% |
| Thursday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 12 mph S | 23% |
| Thursday Night | 76°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 28% |
| Friday | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 8 mph SW | 42% |
| Friday Night | 74°F | Chance Showers And Thunderstorms | 2 to 7 mph SW | 50% |
| Saturday | 89°F | Partly Sunny then Chance Showers And Thunderstorms | 2 to 7 mph SW | 49% |
| Saturday Night | 73°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 49% |
| Sunday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 6 mph W | 19% |
| Sunday Night | 75°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 to 6 mph SW | 19% |
| Monday | 92°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 8 mph SW | 15% |
| Monday Night | 75°F | Slight Chance Showers And Thunderstorms | 3 to 8 mph SW | 18% |
Forecast source: National Weather Service (api.weather.gov) for Dundalk (39.267, -76.497). Updated through the day.
Growing snapshot for Dundalk
Last spring frost
Mar 24
First fall frost
Nov 21
Growing season
244 days
Hardiness zone
8a
More local growing data for Dundalk: nearby ZIP 21222 weather · frost dates · planting calendar · Maryland frost dates
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Climate data from the nearest NOAA station, Md Sci Ctr Baltimore, Md (6.2 mi from Dundalk). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.