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
87°F
Partly Sunny
Partly sunny, with a high near 87. Northeast wind 3 to 7 mph.
7-day forecast for Loch Lomond
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Partly Sunny | 3 to 7 mph NE | 9% |
| Tonight | 69°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 1 to 7 mph E | 75% |
| Wednesday | 87°F | Showers And Thunderstorms Likely | 1 to 7 mph SE | 66% |
| Wednesday Night | 72°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 3 to 7 mph S | 55% |
| Thursday | 91°F | Mostly Sunny | 6 to 12 mph S | 14% |
| Thursday Night | 72°F | Partly Cloudy | 5 to 10 mph SW | 14% |
| Friday | 92°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 8 mph SW | 41% |
| Friday Night | 71°F | Chance Showers And Thunderstorms | 1 to 7 mph SW | 43% |
| Saturday | 91°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 6 mph SW | 53% |
| Saturday Night | 70°F | Chance Showers And Thunderstorms | 0 to 6 mph SW | 53% |
| Sunday | 91°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 20% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 mph SW | 20% |
| Monday | 93°F | Mostly Sunny | 1 to 6 mph W | 9% |
| Monday Night | 72°F | Partly Cloudy | 1 to 5 mph W | 14% |
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 Aug 4, 2026.