McLean, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for McLean, a community in Fairfax County, Virginia.
This Afternoon
84°F
Mostly Sunny
Mostly sunny, with a high near 84. North wind around 10 mph.
7-day forecast for McLean
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 84°F | Mostly Sunny | 10 mph N | 10% |
| Tonight | 62°F | Mostly Cloudy | 9 mph N | 10% |
| Saturday | 79°F | Partly Sunny | 8 mph E | 10% |
| Saturday Night | 67°F | Mostly Cloudy | 8 mph SE | 10% |
| Sunday | 83°F | Mostly Cloudy then Chance Showers And Thunderstorms | 6 to 13 mph S | 46% |
| Sunday Night | 66°F | Showers And Thunderstorms Likely | 5 to 9 mph NW | 65% |
| Monday | 75°F | Chance Rain Showers | 7 to 10 mph NE | 41% |
| Monday Night | 62°F | Rain Showers Likely | 7 to 12 mph NE | 56% |
| Tuesday | 67°F | Rain Showers Likely | 13 mph NE | 59% |
| Tuesday Night | 57°F | Rain Showers Likely | 13 mph NE | 59% |
| Wednesday | 63°F | Chance Rain Showers | 13 mph NE | 50% |
| Wednesday Night | 56°F | Chance Showers And Thunderstorms | 12 mph NE | 50% |
| Thursday | 64°F | Chance Showers And Thunderstorms | 12 mph NE | 47% |
| Thursday Night | 55°F | Chance Showers And Thunderstorms | 6 to 10 mph N | 34% |
Forecast source: National Weather Service (api.weather.gov) for McLean (38.944, -77.193). Updated through the day.
Growing snapshot for McLean
Last spring frost
Apr 9
First fall frost
Oct 31
Growing season
202 days
Hardiness zone
7b
More local growing data for McLean: nearby ZIP 22101 weather · frost dates · planting calendar · Virginia frost dates
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Climate data from the nearest NOAA station, Dalecarlia Rsvr, Md (2.8 mi from McLean). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.