Loch Lomond, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Loch Lomond, a community in Manassas City County, Virginia.
This Afternoon
86°F
Mostly Sunny
Mostly sunny, with a high near 86. North wind around 10 mph.
7-day forecast for Loch Lomond
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 86°F | Mostly Sunny | 10 mph N | 10% |
| Tonight | 62°F | Mostly Cloudy | 9 mph N | 10% |
| Saturday | 79°F | Partly Sunny | 7 mph E | 10% |
| Saturday Night | 66°F | Mostly Cloudy | 7 mph SE | 10% |
| Sunday | 84°F | Partly Sunny then Chance Showers And Thunderstorms | 6 to 13 mph S | 42% |
| Sunday Night | 66°F | Showers And Thunderstorms Likely | 3 to 9 mph NW | 58% |
| Monday | 76°F | Mostly Cloudy then Chance Rain Showers | 7 to 10 mph NE | 41% |
| Monday Night | 62°F | Rain Showers Likely | 5 to 9 mph NE | 60% |
| Tuesday | 67°F | Rain Showers Likely | 10 mph NE | 64% |
| Tuesday Night | 56°F | Rain Showers Likely | 10 mph NE | 64% |
| Wednesday | 63°F | Rain Showers Likely | 12 mph NE | 56% |
| Wednesday Night | 56°F | Chance Showers And Thunderstorms | 7 to 10 mph NE | 52% |
| Thursday | 65°F | Chance Showers And Thunderstorms | 10 mph N | 51% |
| Thursday Night | 55°F | Chance Showers And Thunderstorms | 3 to 8 mph N | 34% |
Forecast source: National Weather Service (api.weather.gov) for Loch Lomond (38.781, -77.482). Updated through the day.
Growing snapshot for Loch Lomond
Last spring frost
Apr 12
First fall frost
Oct 27
Growing season
197 days
Hardiness zone
7a
More local growing data for Loch Lomond: nearby ZIP 20110 weather · frost dates · planting calendar · Virginia frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Manassas, Va (0.9 mi from Loch Lomond). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.