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.
Tonight
51°F
Mostly Clear then Patchy Fog
Patchy fog after 5am. Mostly clear, with a low around 51. South wind around 5 mph.
7-day forecast for Ashton-Sandy Spring
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Mostly Clear then Patchy Fog | 5 mph S | 2% |
| Wednesday | 73°F | Patchy Fog then Mostly Sunny | 2 to 9 mph S | 2% |
| Wednesday Night | 61°F | Mostly Cloudy then Chance Light Rain | 7 mph S | 40% |
| Thursday | 73°F | Light Rain Likely | 6 to 9 mph S | 55% |
| Thursday Night | 61°F | Chance Light Rain | 2 to 6 mph SW | 52% |
| Friday | 69°F | Rain Likely | 1 to 5 mph NW | 65% |
| Friday Night | 49°F | Light Rain Likely | 1 to 7 mph NW | 65% |
| Saturday | 63°F | Mostly Sunny | 7 to 12 mph NW | 12% |
| Saturday Night | 40°F | Partly Cloudy | 5 to 8 mph NW | 12% |
| Sunday | 60°F | Mostly Sunny | 8 mph W | 6% |
| Sunday Night | 39°F | Slight Chance Light Rain | 5 to 8 mph W | 21% |
| Monday | 60°F | Slight Chance Light Rain | 9 to 14 mph W | 21% |
| Monday Night | 38°F | Slight Chance Light Rain | 5 to 8 mph W | 19% |
| Tuesday | 63°F | Sunny | 7 to 12 mph W | 12% |
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 Nov 4, 2026.