North Potomac, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for North Potomac, a community in Montgomery County, Maryland.
Overnight
52°F
Mostly Clear
Mostly clear, with a low around 52. South wind around 3 mph.
7-day forecast for North Potomac
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Mostly Clear | 3 mph S | 1% |
| Wednesday | 74°F | Mostly Sunny | 3 to 9 mph S | 1% |
| Wednesday Night | 61°F | Mostly Cloudy then Chance Rain Showers | 8 mph S | 45% |
| Thursday | 75°F | Chance Rain Showers | 10 mph S | 46% |
| Thursday Night | 61°F | Chance Rain Showers | 2 to 7 mph SW | 52% |
| Friday | 70°F | Chance Light Rain | 5 mph N | 51% |
| Friday Night | 49°F | Chance Light Rain then Partly Cloudy | 2 to 7 mph NW | 30% |
| Saturday | 64°F | Mostly Sunny | 8 to 13 mph NW | 6% |
| Saturday Night | 41°F | Partly Cloudy | 7 to 10 mph NW | 6% |
| Sunday | 61°F | Mostly Sunny | 7 to 12 mph NW | 1% |
| Sunday Night | 40°F | Mostly Clear | 8 mph W | 5% |
| Monday | 61°F | Sunny | 8 to 15 mph W | 5% |
| Monday Night | 38°F | Mostly Clear | 2 to 8 mph W | 5% |
| Tuesday | 64°F | Sunny | 2 to 9 mph W | 3% |
Forecast source: National Weather Service (api.weather.gov) for North Potomac (39.097, -77.239). Updated through the day.
Growing snapshot for North Potomac
Last spring frost
Apr 1
First fall frost
Nov 6
Growing season
219 days
Hardiness zone
7b
More local growing data for North Potomac: nearby ZIP 20878 weather · frost dates · planting calendar · Maryland frost dates
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Climate data from the nearest NOAA station, Rockville 1 Ne, Md (5.5 mi from North Potomac). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.