Cabin John, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cabin John, a community in Montgomery County, Maryland.
This Afternoon
76°F
Partly Sunny
Partly sunny, with a high near 76. South wind around 8 mph, with gusts as high as 18 mph.
7-day forecast for Cabin John
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Partly Sunny | 8 mph S | 1% |
| Tonight | 64°F | Mostly Cloudy then Chance Light Rain | 6 to 9 mph S | 36% |
| Thursday | 76°F | Chance Light Rain then Mostly Cloudy | 10 mph S | 39% |
| Thursday Night | 59°F | Mostly Cloudy then Chance Light Rain | 1 to 8 mph SW | 37% |
| Friday | 71°F | Chance Light Rain | 5 mph N | 29% |
| Friday Night | 48°F | Chance Light Rain then Partly Cloudy | 1 to 10 mph N | 29% |
| Saturday | 62°F | Mostly Sunny | 10 to 14 mph NW | 7% |
| Saturday Night | 42°F | Partly Cloudy | 9 to 13 mph NW | 5% |
| Sunday | 62°F | Mostly Sunny | 7 to 14 mph NW | 1% |
| Sunday Night | 41°F | Mostly Clear | 6 to 9 mph NW | 0% |
| Monday | 63°F | Sunny | 8 to 13 mph NW | 0% |
| Monday Night | 39°F | Mostly Clear | 2 to 6 mph W | 0% |
| Tuesday | 67°F | Mostly Sunny | 2 to 9 mph SW | 1% |
| Tuesday Night | 41°F | Mostly Clear | 2 to 6 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Cabin John (38.974, -77.164). Updated through the day.
Growing snapshot for Cabin John
Last spring frost
Apr 9
First fall frost
Oct 31
Growing season
202 days
Hardiness zone
7b
More local growing data for Cabin John: nearby ZIP 20818 weather · frost dates · planting calendar · Maryland frost dates
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Climate data from the nearest NOAA station, Dalecarlia Rsvr, Md (3.6 mi from Cabin John). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.