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

Planting zone for 41774 — Viper, KY

ZIP code 41774 (Viper, Perry County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is April 18 and the first fall frost October 28.

Where ZIP 41774 is

Outlined: the ZIP code area · 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 18
First frostOct 28
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 Viper, KY…

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 Viper, KY

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 18median — 50% chance of a later frost
Safe for tender plantsMay 2only 10% chance of frost after
First fall frostOctober 28median — 10% chance by Oct 17
Growing season191 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 6 and returns around November 5.

From the NOAA station Skyline 1 Se, KY — 9 miles away, elevation 1,083 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 41774

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 7 – Mar 21
SpinachSow outdoors · Mar 7 – Mar 28
Broccoli, cabbageStart indoors · Feb 7 – Feb 21
Broccoli, cabbageTransplant · Mar 28 – Apr 11
Onion setsPlant outdoors · Mar 21 – Apr 4
PotatoesPlant outdoors · Mar 28 – Apr 11
LettuceSow outdoors · Mar 21 – Apr 4
Carrots, beetsSow outdoors · Mar 28 – Apr 11
TomatoesStart indoors · Feb 21 – Mar 7
TomatoesTransplant · Apr 25 – May 9
Peppers, eggplantStart indoors · Feb 7 – Feb 21
Peppers, eggplantTransplant · May 2 – May 16
BeansSow outdoors · Apr 25 – May 9
Sweet cornSow outdoors · Apr 25 – May 9
Cucumbers, squashSow outdoors · Apr 25 – May 9
Fall lettuce, spinachSow outdoors · Sep 2 – Sep 16
GarlicPlant cloves · Oct 14 – Nov 18
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 18) and first fall frost (Oct 28) 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 41774 came on Mar 2 — 3 days earlier than the 1991–2020 average (Mar 5).

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 Viper, KY

The soil mapped at the center of ZIP 41774 is Shelocta — slightly decomposed plant material, well drained.

TextureSlightly decomposed plant materialtop layer
pH5.6moderately acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter69%high
Hydrologic groupBwater soaks in moderately
Farmland classNot prime farmlandUSDA classification

Map unit: Shelocta-Cutshin-Gilpin complex, 20 to 75 percent slopes, very stony.

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 41774; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Viper, KY

Summer high86 °Faverage high, July
Winter low26 °Faverage low, January
Hot days15days a year at 90 °F or more
Freezing nights100nights a year at 32 °F or less
Growing degree days3,809base 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
Precipitation53 inper year, rain and melted snow
Snowfall9 inper year; 3 days with snow on the ground

Average high and low, by month

20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 45 °F, low 26 °F 45°26° JanFebruary: average high 49 °F, low 29 °F 49°29° FebMarch: average high 59 °F, low 33 °F 59°33° MarApril: average high 70 °F, low 42 °F 70°42° AprMay: average high 77 °F, low 52 °F 77°52° MayJune: average high 83 °F, low 60 °F 83°60° JunJuly: average high 86 °F, low 64 °F 86°64° JulAugust: average high 85 °F, low 64 °F 85°64° AugSeptember: average high 79 °F, low 57 °F 79°57° SepOctober: average high 70 °F, low 46 °F 70°46° OctNovember: average high 59 °F, low 34 °F 59°34° NovDecember: average high 49 °F, low 29 °F 49°29° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″6″January: 4.88 in precipitation, 4 in snowfall 4.9❄4 JanFebruary: 4.09 in precipitation, 1.6 in snowfall 4.1❄2 FebMarch: 4.60 in precipitation, 2.1 in snowfall 4.6❄2 MarApril: 4.81 in precipitation 4.8 AprMay: 5.00 in precipitation 5.0 MayJune: 5.18 in precipitation 5.2 JunJuly: 5.38 in precipitation 5.4 JulAugust: 4.63 in precipitation 4.6 AugSeptember: 3.17 in precipitation 3.2 SepOctober: 3.21 in precipitation 3.2 OctNovember: 3.21 in precipitation 3.2 NovDecember: 4.81 in precipitation, 1.1 in snowfall 4.8❄1 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Skyline 1 Se, KY (9 mi away); precipitation: Hazard Wtr Wks, KY (7 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 7a.

417607a
Scuddy, KY · 4 mi
417517a
Jeff, KY · 5 mi
417467a
Happy, KY · 5 mi
417317a
Cornettsville, KY · 6 mi
417647a
Smilax, KY · 6 mi
417637a
Slemp, KY · 7 mi
417027a
Hazard, KY · 7 mi
418047a
Blackey, KY · 8 mi

Kentucky planting zones →

Questions about 41774

What planting zone is ZIP code 41774?

ZIP code 41774 (Viper, KY) 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 Viper, KY?

The median last spring frost (32 °F) near 41774 is April 18; after May 2 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Skyline 1 Se station.

When is the first frost in Viper, KY?

The median first fall frost near 41774 is October 28, giving a median frost-free growing season of 191 days.

When should I plant tomatoes in 41774?

Start tomato seeds indoors around Feb 21 – Mar 7 and set transplants outside around Apr 25 – May 9, one to three weeks after the median last frost.

How much rain and snow does 41774 get?

About 53 inches of precipitation a year and 9 inches of snowfall (NOAA 1991–2020 normals, Hazard Wtr Wks station).

How hot do summers get in Viper, KY?

The average high peaks at 86 °F in July, with about 15 days a year at 90 °F or more.

What kind of soil does 41774 have?

The USDA soil survey maps Shelocta at the center of ZIP 41774: slightly decomposed plant material, well drained, pH about 5.6 (moderately acidic).

Did spring come early in Viper, KY in 2026?

Spring leaf-out near 41774 came on Mar 2 in 2026, 3 days earlier than the 1991–2020 average (Mar 5), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Viper, KY?

Intermediate onions: the longest day near 41774 is 14 h 43 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 41774 change?

Yes. The 2012 USDA map put 41774 in zone 6b; the 2023 map puts it in zone 7a. The newer map uses 1991–2020 data and more weather stations.