Ashton-Sandy Spring, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ashton-Sandy Spring, a community in Montgomery County, Maryland.
Today
84°F
Partly Sunny
Partly sunny, with a high near 84. East wind 3 to 7 mph.
7-day forecast for Ashton-Sandy Spring
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Partly Sunny | 3 to 7 mph E | 1% |
| Tonight | 69°F | Mostly Cloudy then Chance Showers And Thunderstorms | 1 to 6 mph E | 49% |
| Wednesday | 84°F | Rain Showers Likely then Chance Showers And Thunderstorms | 2 to 6 mph SE | 71% |
| Wednesday Night | 72°F | Chance Showers And Thunderstorms | 6 mph S | 49% |
| Thursday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 9 mph S | 23% |
| Thursday Night | 73°F | Chance Showers And Thunderstorms | 3 to 8 mph SW | 30% |
| Friday | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 6 mph SW | 40% |
| Friday Night | 71°F | Chance Showers And Thunderstorms | 5 mph SW | 51% |
| Saturday | 87°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 2 to 6 mph SW | 53% |
| Saturday Night | 70°F | Chance Showers And Thunderstorms | 1 to 5 mph SW | 53% |
| Sunday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 5 mph W | 20% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 mph SW | 20% |
| Monday | 90°F | Mostly Sunny | 2 to 7 mph W | 13% |
| Monday Night | 72°F | Slight Chance Showers And Thunderstorms | 6 mph W | 18% |
Forecast source: National Weather Service (api.weather.gov) for Ashton-Sandy Spring (39.149, -76.999). Updated through the day.
Growing snapshot for Ashton-Sandy Spring
Last spring frost
Apr 5
First fall frost
Nov 9
Growing season
218 days
Hardiness zone
7b
More local growing data for Ashton-Sandy Spring: nearby ZIP 20861 weather · frost dates · planting calendar · Maryland frost dates
Nearby towns & communities
Aspen Hill
Barnesville
Bethesda
Brookeville
Brookmont
Burnt Mills
Burtonsville
Cabin John
Calverton
Chevy Chase
Chevy Chase
Chevy Chase Section Five
Chevy Chase Section Three
Chevy Chase View
Chevy Chase Village
Clarksburg
Cloverly
Colesville
Damascus
Darnestown
Derwood
Fairland
Flower Hill
Forest Glen
Four Corners
Friendship Heights Village
Gaithersburg
Garrett Park
Germantown
Glen Echo
Climate data from the nearest NOAA station, Laurel 3 W, Md (6.9 mi from Ashton-Sandy Spring). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.