Cobb Island, MD Weather & Growing Conditions
This Afternoon
80°F
Mostly Sunny
Mostly sunny, with a high near 80. East wind around 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 80°F | Mostly Sunny | 7 mph E | 6% |
| Tonight | 69°F | Mostly Cloudy | 7 mph SE | 11% |
| Sunday | 85°F | Partly Sunny | 5 to 9 mph S | 14% |
| Sunday Night | 68°F | Showers And Thunderstorms Likely | 3 to 7 mph W | 61% |
| Monday | 74°F | Rain Showers Likely | 10 mph NE | 55% |
| Monday Night | 64°F | Chance Rain Showers | 10 mph NE | 38% |
| Tuesday | 70°F | Rain Showers Likely | 10 to 18 mph NE | 55% |
| Tuesday Night | 62°F | Rain Showers Likely | 17 to 23 mph NE | 55% |
| Wednesday | 67°F | Chance Rain Showers | 18 to 23 mph NE | 47% |
| Wednesday Night | 62°F | Chance Rain Showers | 20 to 23 mph NE | 47% |
| Thursday | 66°F | Chance Showers And Thunderstorms | 18 to 23 mph NE | 44% |
| Thursday Night | 60°F | Chance Showers And Thunderstorms | 16 to 22 mph N | 40% |
| Friday | 68°F | Slight Chance Rain Showers | 15 mph N | 21% |
| Friday Night | 60°F | Partly Cloudy | 10 to 14 mph N | 13% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Cobb Island, MD
Last spring frost
Apr 17
First fall frost
Oct 27
Growing season
195 days
Hardiness zone
8a
Explore more for Cobb Island, MD: full frost dates · planting calendar · Maryland frost dates
Climate data from the nearest NOAA station, Mechanicsville 5 Ne, Md (17.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.