Difficult Run, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Difficult Run, a community in Fairfax County, Virginia.
Overnight
62°F
Partly Cloudy
Partly cloudy, with a low around 62. Northeast wind around 7 mph.
7-day forecast for Difficult Run
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 62°F | Partly Cloudy | 7 mph NE | 0% |
| Saturday | 79°F | Partly Sunny | 3 to 7 mph NE | 8% |
| Saturday Night | 65°F | Mostly Cloudy | 7 mph SE | 13% |
| Sunday | 84°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 7 to 12 mph S | 40% |
| Sunday Night | 62°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 to 10 mph NW | 70% |
| Monday | 71°F | Chance Rain Showers | 7 to 10 mph N | 35% |
| Monday Night | 57°F | Chance Rain Showers | 5 to 9 mph NE | 46% |
| Tuesday | 64°F | Rain Showers Likely | 12 mph NE | 62% |
| Tuesday Night | 54°F | Rain Showers Likely | 13 mph NE | 62% |
| Wednesday | 61°F | Chance Rain Showers | 13 mph NE | 52% |
| Wednesday Night | 54°F | Chance Showers And Thunderstorms | 13 mph NE | 47% |
| Thursday | 62°F | Chance Showers And Thunderstorms | 13 mph NE | 45% |
| Thursday Night | 53°F | Chance Showers And Thunderstorms | 7 to 10 mph N | 39% |
| Friday | 67°F | Slight Chance Rain Showers | 10 mph N | 20% |
Forecast source: National Weather Service (api.weather.gov) for Difficult Run (38.907, -77.346). Updated through the day.
Growing snapshot for Difficult Run
Last spring frost
Apr 14
First fall frost
Oct 29
Growing season
198 days
Hardiness zone
7b
More local growing data for Difficult Run: nearby ZIP 22124 weather · frost dates · planting calendar · Virginia frost dates
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Climate data from the nearest NOAA station, Vienna, Va (2.2 mi from Difficult Run). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.