McLean, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for McLean, a community in Fairfax County, Virginia.
Today
87°F
Partly Sunny
Partly sunny, with a high near 87. East wind around 7 mph.
7-day forecast for McLean
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Partly Sunny | 7 mph E | 2% |
| Tonight | 71°F | Slight Chance Showers And Thunderstorms | 2 to 7 mph E | 64% |
| Wednesday | 87°F | Showers And Thunderstorms Likely | 2 to 7 mph SE | 64% |
| Wednesday Night | 73°F | Chance Showers And Thunderstorms | 7 mph S | 54% |
| Thursday | 91°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 to 10 mph S | 16% |
| Thursday Night | 75°F | Slight Chance Showers And Thunderstorms | 5 to 9 mph SW | 18% |
| Friday | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 7 mph SW | 38% |
| Friday Night | 73°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 49% |
| Saturday | 90°F | Partly Sunny then Chance Showers And Thunderstorms | 2 to 6 mph SW | 54% |
| Saturday Night | 72°F | Chance Showers And Thunderstorms | 1 to 5 mph SW | 54% |
| Sunday | 91°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 6 mph W | 20% |
| Sunday Night | 73°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph SW | 20% |
| Monday | 93°F | Mostly Sunny | 2 to 7 mph W | 11% |
| Monday Night | 74°F | Slight Chance Showers And Thunderstorms | 6 mph W | 15% |
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 Aug 4, 2026.