Forest Glen, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Forest Glen, a community in Montgomery County, Maryland.
Today
86°F
Partly Sunny
Partly sunny, with a high near 86. East wind around 7 mph.
7-day forecast for Forest Glen
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Partly Sunny | 7 mph E | 1% |
| Tonight | 70°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 2 to 7 mph E | 57% |
| Wednesday | 86°F | Showers And Thunderstorms Likely | 2 to 7 mph SE | 66% |
| Wednesday Night | 72°F | Chance Showers And Thunderstorms | 6 mph S | 52% |
| Thursday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 to 10 mph SW | 17% |
| Thursday Night | 73°F | Slight Chance Showers And Thunderstorms | 5 to 9 mph SW | 22% |
| Friday | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 7 mph SW | 38% |
| Friday Night | 72°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 50% |
| Saturday | 89°F | Showers And Thunderstorms Likely | 2 to 6 mph SW | 55% |
| Saturday Night | 71°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 mph SW | 55% |
| Sunday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 6 mph W | 20% |
| Sunday Night | 73°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph SW | 20% |
| Monday | 92°F | Mostly Sunny | 2 to 7 mph W | 12% |
| Monday Night | 73°F | Slight Chance Showers And Thunderstorms | 6 mph W | 17% |
Forecast source: National Weather Service (api.weather.gov) for Forest Glen (39.019, -77.045). Updated through the day.
Growing snapshot for Forest Glen
Last spring frost
Apr 10
First fall frost
Nov 1
Growing season
202 days
Hardiness zone
7b
More local growing data for Forest Glen: nearby ZIP 20910 weather · frost dates · planting calendar · Maryland frost dates
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Climate data from the nearest NOAA station, Beltsville, Md (6 mi from Forest Glen). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.