Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated

Planting zone for 24624 — Keen Mountain, VA

ZIP code 24624 (Keen Mountain, Buchanan County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is April 21 and the first fall frost October 26.

Where ZIP 24624 is

tap the map for the zone at any spot · scroll or pinch to zoom

Not the official USDA Plant Hardiness Zone Map. Zones come from the 2023 USDA hardiness-zone data by the PRISM Group, Oregon State University; we re-mapped and recolored them. The official map is at planthardiness.ars.usda.gov.

Zone7a0 to 5 °F
Coldest night−17.8 to −15 °C
Last frostApr 21
First frostOct 26
2012 zone6b

Was 6b on the 2012 map — half a zone warmer now. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 7a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Keen Mountain, VA…

Forecast data: National Weather Service (api.weather.gov), public domain. This is not a warning service — for official frost and freeze warnings see weather.gov.

Frost dates in Keen Mountain, VA

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 21median — 50% chance of a later frost
Safe for tender plantsMay 7only 10% chance of frost after
First fall frostOctober 26median — 10% chance by Oct 13
Growing season189 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 6 and returns around November 3.

From the NOAA station Grundy, VA — 8 miles away, elevation 1,158 ft. NOAA NCEI U.S. Climate Normals 1991–2020, 32 °F threshold. Low spots and valleys can freeze later in spring than the station.

When to plant vegetables in 24624

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 10 – Mar 24
SpinachSow outdoors · Mar 10 – Mar 31
Broccoli, cabbageStart indoors · Feb 10 – Feb 24
Broccoli, cabbageTransplant · Mar 31 – Apr 14
Onion setsPlant outdoors · Mar 24 – Apr 7
PotatoesPlant outdoors · Mar 31 – Apr 14
LettuceSow outdoors · Mar 24 – Apr 7
Carrots, beetsSow outdoors · Mar 31 – Apr 14
TomatoesStart indoors · Feb 24 – Mar 10
TomatoesTransplant · Apr 28 – May 12
Peppers, eggplantStart indoors · Feb 10 – Feb 24
Peppers, eggplantTransplant · May 5 – May 19
BeansSow outdoors · Apr 28 – May 12
Sweet cornSow outdoors · Apr 28 – May 12
Cucumbers, squashSow outdoors · Apr 28 – May 12
Fall lettuce, spinachSow outdoors · Aug 31 – Sep 14
GarlicPlant cloves · Oct 12 – Nov 16
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 21) and first fall frost (Oct 26) with the rules of thumb U.S. extension services publish. Cool-season crops take a light frost; warm-season crops do best once the soil is above about 60 °F.

When spring arrived in 2026

In 2026, spring leaf-out near 24624 came on Mar 6 — 5 days earlier than the 1991–2020 average (Mar 11).

JanFebMarAprMayJun

The Spring Index marks the day when accumulated warmth is enough for lilac and honeysuckle to leaf out — a widely used signal that the growing season has started. Source: USA National Phenology Network, www.usanpn.org — Spring Indices, first leaf, 2026 (data as of 2026-09-08) and 30-year average 1991–2020 (CC BY 4.0).

Soil in Keen Mountain, VA

The center of ZIP 24624 is mapped as Udorthents-Urban land complex, occasionally flooded: built-over ground without natural soil data. Garden soil here is usually imported or disturbed — test before you plant.

Soil Survey Staff, Natural Resources Conservation Service, USDA. Soil Survey Geographic (SSURGO) Database, via Soil Data Access, accessed 2026-10-29. The soil at the center point of ZIP 24624; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Keen Mountain, VA

Summer high83 °Faverage high, July
Winter low24 °Faverage low, January
Hot days18days a year at 90 °F or more
Freezing nights112nights a year at 32 °F or less
Growing degree days3,356base 50 °F — the season’s usable heat
Longest day14 h 43 mindaylight on June 21
Shortest day9 h 36 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation46.9 inper year, rain and melted snow
Snowfall16 inper year; 15 days with snow on the ground

Average high and low, by month

10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 43 °F, low 24 °F 43°24° JanFebruary: average high 47 °F, low 27 °F 47°27° FebMarch: average high 56 °F, low 32 °F 56°32° MarApril: average high 67 °F, low 40 °F 67°40° AprMay: average high 74 °F, low 50 °F 74°50° MayJune: average high 80 °F, low 59 °F 80°59° JunJuly: average high 83 °F, low 63 °F 83°63° JulAugust: average high 82 °F, low 63 °F 82°63° AugSeptember: average high 77 °F, low 56 °F 77°56° SepOctober: average high 67 °F, low 44 °F 67°44° OctNovember: average high 56 °F, low 33 °F 56°33° NovDecember: average high 46 °F, low 28 °F 46°28° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″6″January: 3.31 in precipitation, 6.2 in snowfall 3.3❄6 JanFebruary: 3.28 in precipitation, 4.2 in snowfall 3.3❄4 FebMarch: 4.03 in precipitation, 2.6 in snowfall 4.0❄3 MarApril: 4.30 in precipitation, 0.2 in snowfall 4.3 AprMay: 4.81 in precipitation 4.8 MayJune: 4.76 in precipitation 4.8 JunJuly: 5.69 in precipitation 5.7 JulAugust: 4.19 in precipitation 4.2 AugSeptember: 3.16 in precipitation 3.2 SepOctober: 3.02 in precipitation 3.0 OctNovember: 2.61 in precipitation, 0.4 in snowfall 2.6 NovDecember: 3.70 in precipitation, 2.4 in snowfall 3.7❄2 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Grundy, VA (8 mi away); precipitation: Grundy, VA (8 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

1 of the 8 nearest ZIP codes are in a different zone — elevation and distance from water change winter lows quickly.

246317a
Oakwood, VA · 2 mi
246467a
Rowe, VA · 4 mi
246397a
Raven, VA · 5 mi
246587a
Wolford, VA · 6 mi
246347a
Pilgrims Knob, VA · 6 mi
246476b
Shortt Gap, VA · 7 mi
246577a
Whitewood, VA · 8 mi
246567a
Vansant, VA · 8 mi

Virginia planting zones →

Questions about 24624

What planting zone is ZIP code 24624?

ZIP code 24624 (Keen Mountain, VA) is in USDA hardiness zone 7a on the 2023 map: the coldest night of an average winter reaches 0 to 5 °F (−17.8 to −15 °C).

When is the last frost in Keen Mountain, VA?

The median last spring frost (32 °F) near 24624 is April 21; after May 7 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Grundy station.

When is the first frost in Keen Mountain, VA?

The median first fall frost near 24624 is October 26, giving a median frost-free growing season of 189 days.

When should I plant tomatoes in 24624?

Start tomato seeds indoors around Feb 24 – Mar 10 and set transplants outside around Apr 28 – May 12, one to three weeks after the median last frost.

How much rain and snow does 24624 get?

About 46.9 inches of precipitation a year and 16 inches of snowfall (NOAA 1991–2020 normals, Grundy station).

How hot do summers get in Keen Mountain, VA?

The average high peaks at 83 °F in July, with about 18 days a year at 90 °F or more.

Did spring come early in Keen Mountain, VA in 2026?

Spring leaf-out near 24624 came on Mar 6 in 2026, 5 days earlier than the 1991–2020 average (Mar 11), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Keen Mountain, VA?

Intermediate onions: the longest day near 24624 is 14 h 43 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 24624 change?

Yes. The 2012 USDA map put 24624 in zone 6b; the 2023 map puts it in zone 7a. The newer map uses 1991–2020 data and more weather stations.