Lake Barcroft, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lake Barcroft, a community in Fairfax County, Virginia.
This Afternoon
84°F
Partly Sunny
Partly sunny, with a high near 84. North wind around 10 mph.
7-day forecast for Lake Barcroft
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 84°F | Partly Sunny | 10 mph N | 10% |
| Tonight | 64°F | Mostly Cloudy | 9 mph N | 10% |
| Saturday | 78°F | Partly Sunny | 9 mph E | 10% |
| Saturday Night | 67°F | Mostly Cloudy | 8 mph SE | 10% |
| Sunday | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 6 to 13 mph S | 43% |
| Sunday Night | 67°F | Showers And Thunderstorms Likely | 5 to 9 mph NW | 63% |
| Monday | 75°F | Chance Rain Showers | 7 to 10 mph N | 41% |
| Monday Night | 63°F | Rain Showers Likely | 8 to 12 mph NE | 55% |
| Tuesday | 66°F | Rain Showers Likely | 14 mph NE | 60% |
| Tuesday Night | 58°F | Rain Showers Likely | 14 mph NE | 60% |
| Wednesday | 62°F | Chance Rain Showers | 14 mph NE | 51% |
| Wednesday Night | 57°F | Chance Showers And Thunderstorms | 12 mph NE | 50% |
| Thursday | 64°F | Chance Showers And Thunderstorms | 12 mph NE | 47% |
| Thursday Night | 56°F | Chance Showers And Thunderstorms | 6 to 10 mph N | 34% |
Forecast source: National Weather Service (api.weather.gov) for Lake Barcroft (38.852, -77.159). Updated through the day.
Growing snapshot for Lake Barcroft
Last spring frost
Apr 9
First fall frost
Oct 31
Growing season
202 days
Hardiness zone
7b
More local growing data for Lake Barcroft: nearby ZIP 22044 weather · frost dates · planting calendar · Virginia frost dates
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Climate data from the nearest NOAA station, Dalecarlia Rsvr, Md (5.7 mi from Lake Barcroft). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.