Reston, VA Weather & Growing Conditions
Tonight
62°F
Mostly Cloudy
Mostly cloudy, with a low around 62. North wind around 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 62°F | Mostly Cloudy | 8 mph N | 10% |
| Saturday | 78°F | Partly Sunny | 8 mph E | 10% |
| Saturday Night | 67°F | Mostly Cloudy | 8 mph SE | 10% |
| Sunday | 82°F | Partly Sunny then Chance Showers And Thunderstorms | 7 to 13 mph S | 49% |
| Sunday Night | 65°F | Showers And Thunderstorms Likely | 3 to 9 mph NW | 64% |
| Monday | 74°F | Chance Rain Showers | 8 to 12 mph NE | 41% |
| Monday Night | 62°F | Rain Showers Likely | 7 to 10 mph NE | 57% |
| Tuesday | 66°F | Rain Showers Likely | 12 mph NE | 60% |
| Tuesday Night | 56°F | Rain Showers Likely | 12 mph NE | 60% |
| Wednesday | 61°F | Chance Rain Showers | 12 mph NE | 54% |
| Wednesday Night | 56°F | Chance Showers And Thunderstorms | 10 mph NE | 51% |
| Thursday | 63°F | Chance Showers And Thunderstorms | 10 mph NE | 50% |
| Thursday Night | 55°F | Chance Showers And Thunderstorms | 8 mph N | 35% |
| Friday | 68°F | Slight Chance Rain Showers | 10 mph N | 23% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Reston, VA
Last spring frost
Apr 14
First fall frost
Oct 29
Growing season
198 days
Hardiness zone
7b
Explore more for Reston, VA: full frost dates · planting calendar · Virginia frost dates
Climate data from the nearest NOAA station, Vienna, Va (4.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.