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.
This Afternoon
82°F
Mostly Sunny
Mostly sunny, with a high near 82. North wind around 10 mph.
7-day forecast for Ashton-Sandy Spring
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 82°F | Mostly Sunny | 10 mph N | 10% |
| Tonight | 59°F | Partly Cloudy | 9 mph N | 10% |
| Saturday | 77°F | Partly Sunny | 9 mph E | 5% |
| Saturday Night | 65°F | Mostly Cloudy then Isolated Rain Showers | 8 mph SE | 20% |
| Sunday | 81°F | Chance Rain Showers | 7 to 13 mph S | 52% |
| Sunday Night | 64°F | Showers And Thunderstorms Likely | 5 to 9 mph W | 69% |
| Monday | 72°F | Chance Rain Showers | 8 to 12 mph NE | 41% |
| Monday Night | 59°F | Chance Rain Showers | 7 to 12 mph NE | 52% |
| Tuesday | 64°F | Rain Showers Likely | 13 mph NE | 56% |
| Tuesday Night | 54°F | Rain Showers Likely | 13 mph NE | 56% |
| Wednesday | 60°F | Chance Rain Showers | 14 mph NE | 50% |
| Wednesday Night | 54°F | Chance Showers And Thunderstorms | 12 mph NE | 50% |
| Thursday | 62°F | Chance Showers And Thunderstorms | 12 mph NE | 45% |
| Thursday Night | 53°F | Chance Showers And Thunderstorms | 5 to 8 mph N | 35% |
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
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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 Sep 18, 2026.