Dundalk, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dundalk, a community in Baltimore County, Maryland.
Overnight
54°F
Mostly Clear
Mostly clear, with a low around 54. South wind around 3 mph.
7-day forecast for Dundalk
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 54°F | Mostly Clear | 3 mph S | 3% |
| Wednesday | 73°F | Patchy Fog then Mostly Sunny | 1 to 9 mph S | 3% |
| Wednesday Night | 61°F | Mostly Cloudy then Patchy Fog | 7 mph S | 20% |
| Thursday | 74°F | Chance Light Rain | 5 to 9 mph S | 52% |
| Thursday Night | 62°F | Light Rain Likely | 2 to 7 mph S | 62% |
| Friday | 71°F | Rain Likely | 5 mph NW | 74% |
| Friday Night | 53°F | Light Rain Likely | 5 mph NW | 74% |
| Saturday | 66°F | Mostly Sunny | 6 to 10 mph NW | 13% |
| Saturday Night | 44°F | Partly Cloudy | 8 mph NW | 13% |
| Sunday | 63°F | Mostly Sunny | 8 mph W | 6% |
| Sunday Night | 43°F | Slight Chance Light Rain | 8 mph W | 22% |
| Monday | 62°F | Slight Chance Light Rain | 8 to 13 mph W | 22% |
| Monday Night | 42°F | Slight Chance Light Rain | 6 to 9 mph W | 18% |
| Tuesday | 65°F | Sunny | 6 to 12 mph W | 14% |
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.