Dundalk, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dundalk, a community in Baltimore County, Maryland.
Today
73°F
Patchy Fog then Mostly Sunny
Patchy fog before 9am. Mostly sunny, with a high near 73. South wind 2 to 9 mph.
7-day forecast for Dundalk
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Patchy Fog then Mostly Sunny | 2 to 9 mph S | 1% |
| Tonight | 61°F | Mostly Cloudy then Slight Chance Rain Showers | 6 mph S | 18% |
| Thursday | 73°F | Chance Rain Showers | 6 to 9 mph S | 49% |
| Thursday Night | 62°F | Rain Showers Likely | 2 to 7 mph SW | 65% |
| Friday | 71°F | Light Rain Likely | 5 mph N | 70% |
| Friday Night | 51°F | Chance Light Rain then Partly Cloudy | 2 to 6 mph NW | 49% |
| Saturday | 65°F | Mostly Sunny | 6 to 12 mph NW | 6% |
| Saturday Night | 43°F | Partly Cloudy | 9 mph NW | 6% |
| Sunday | 62°F | Mostly Sunny | 10 mph NW | 2% |
| Sunday Night | 42°F | Mostly Clear | 7 mph W | 7% |
| Monday | 62°F | Sunny | 8 to 13 mph W | 7% |
| Monday Night | 42°F | Mostly Clear | 3 to 8 mph W | 5% |
| Tuesday | 65°F | Sunny | 5 to 10 mph W | 2% |
| Tuesday Night | 43°F | Mostly Clear | 7 mph W | 0% |
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 Nov 4, 2026.