Bethesda, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bethesda, a community in Montgomery County, Maryland.
Tonight
62°F
Mostly Cloudy
Mostly cloudy, with a low around 62. North wind around 9 mph.
7-day forecast for Bethesda
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 62°F | Mostly Cloudy | 9 mph N | 10% |
| Saturday | 78°F | Partly Sunny | 8 mph E | 10% |
| Saturday Night | 66°F | Mostly Cloudy then Isolated Rain Showers | 8 mph SE | 20% |
| Sunday | 83°F | Chance Rain Showers | 6 to 13 mph S | 47% |
| Sunday Night | 66°F | Showers And Thunderstorms Likely | 5 to 9 mph W | 66% |
| Monday | 74°F | Chance Rain Showers | 7 to 10 mph NE | 41% |
| Monday Night | 61°F | Rain Showers Likely | 7 to 10 mph NE | 55% |
| Tuesday | 66°F | Rain Showers Likely | 13 mph NE | 57% |
| Tuesday Night | 57°F | Rain Showers Likely | 13 mph NE | 57% |
| Wednesday | 62°F | Chance Rain Showers | 13 mph NE | 50% |
| Wednesday Night | 56°F | Chance Showers And Thunderstorms | 8 to 12 mph NE | 50% |
| Thursday | 64°F | Chance Showers And Thunderstorms | 12 mph NE | 46% |
| Thursday Night | 55°F | Chance Showers And Thunderstorms | 5 to 9 mph N | 34% |
| Friday | 68°F | Slight Chance Rain Showers | 7 to 10 mph N | 23% |
Forecast source: National Weather Service (api.weather.gov) for Bethesda (38.987, -77.119). Updated through the day.
Growing snapshot for Bethesda
Last spring frost
Apr 9
First fall frost
Oct 31
Growing season
202 days
Hardiness zone
7b
More local growing data for Bethesda: nearby ZIP 20894 weather · frost dates · planting calendar · Maryland frost dates
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Climate data from the nearest NOAA station, Dalecarlia Rsvr, Md (4 mi from Bethesda). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.