Dumbarton, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dumbarton, a community in Henrico County, Virginia.
This Afternoon
74°F
Sunny
Sunny. High near 74, with temperatures falling to around 68 in the afternoon. South wind around 6 mph.
7-day forecast for Dumbarton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Sunny | 6 mph S | 1% |
| Tonight | 50°F | Mostly Clear | 3 mph S | 1% |
| Wednesday | 77°F | Patchy Fog then Mostly Sunny | 1 to 7 mph S | 4% |
| Wednesday Night | 61°F | Mostly Cloudy | 6 mph S | 6% |
| Thursday | 78°F | Slight Chance Rain Showers | 6 to 12 mph S | 19% |
| Thursday Night | 64°F | Showers And Thunderstorms Likely | 6 mph S | 73% |
| Friday | 73°F | Showers And Thunderstorms | 2 to 7 mph SW | 79% |
| Friday Night | 53°F | Showers And Thunderstorms Likely | 3 mph NW | 69% |
| Saturday | 68°F | Mostly Sunny | 3 to 8 mph NW | 10% |
| Saturday Night | 43°F | Mostly Clear | 3 mph N | 10% |
| Sunday | 63°F | Mostly Sunny | 2 to 6 mph W | 4% |
| Sunday Night | 42°F | Partly Cloudy | 2 to 6 mph W | 14% |
| Monday | 63°F | Slight Chance Rain Showers | 6 to 12 mph W | 17% |
| Monday Night | 40°F | Mostly Clear | 7 mph SW | 13% |
Forecast source: National Weather Service (api.weather.gov) for Dumbarton (37.612, -77.508). Updated through the day.
Growing snapshot for Dumbarton
Last spring frost
Apr 10
First fall frost
Oct 31
Growing season
202 days
Hardiness zone
7b
More local growing data for Dumbarton: nearby ZIP 23228 weather · frost dates · planting calendar · Virginia frost dates
Nearby towns & communities
Chamberlayne
East Highland Park
Glen Allen
Highland Springs
Innsbrook
Lakeside
Laurel
Montrose
Sandston
Short Pump
Tuckahoe
Climate data from the nearest NOAA station, Ashland Hanover Co Muni Ap, Va (6.5 mi from Dumbarton). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.