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.
Today
76°F
Mostly Sunny
Mostly sunny, with a high near 76. South wind around 9 mph, with gusts as high as 18 mph.
7-day forecast for Loch Lomond
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Mostly Sunny | 9 mph S | 1% |
| Tonight | 62°F | Mostly Cloudy then Chance Rain Showers | 5 to 8 mph S | 39% |
| Thursday | 76°F | Chance Rain Showers | 8 to 12 mph S | 35% |
| Thursday Night | 61°F | Rain Showers Likely | 2 to 7 mph SW | 55% |
| Friday | 71°F | Chance Light Rain | 5 mph N | 54% |
| Friday Night | 49°F | Chance Light Rain then Partly Cloudy | 2 to 7 mph NW | 31% |
| Saturday | 64°F | Mostly Sunny | 7 to 13 mph NW | 6% |
| Saturday Night | 41°F | Mostly Clear | 7 to 10 mph NW | 5% |
| Sunday | 62°F | Mostly Sunny | 7 to 10 mph NW | 1% |
| Sunday Night | 39°F | Mostly Clear | 6 mph NW | 5% |
| Monday | 63°F | Sunny | 6 to 13 mph NW | 5% |
| Monday Night | 37°F | Mostly Clear | 1 to 7 mph W | 4% |
| Tuesday | 66°F | Sunny | 2 to 7 mph SW | 2% |
| Tuesday Night | 39°F | Mostly Clear | 2 to 6 mph W | 0% |
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 Nov 4, 2026.