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

Planting zone for Glasgow, KY

Glasgow, KY is in USDA zone 7a across its 2 ZIP codes. The median last spring frost is April 9 and the first fall frost October 27.

Glasgow on the zone map

Outlined: its 1 ZIP code areas · 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
ZIP codes2
Last frostApr 9
First frostOct 27
Growing season201 days

7a 2 ZIPs

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Glasgow, 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 Glasgow, KY

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 9median — 50% chance of a later frost
Safe for tender plantsApril 28only 10% chance of frost after
First fall frostOctober 27median — 10% chance by Oct 14
Growing season201 daysfrost-free, median

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

From the NOAA station Glasgow, KY, elevation 771 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 Glasgow

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 26 – Mar 12
SpinachSow outdoors · Feb 26 – Mar 19
Broccoli, cabbageStart indoors · Jan 29 – Feb 12
Broccoli, cabbageTransplant · Mar 19 – Apr 2
Onion setsPlant outdoors · Mar 12 – Mar 26
PotatoesPlant outdoors · Mar 19 – Apr 2
LettuceSow outdoors · Mar 12 – Mar 26
Carrots, beetsSow outdoors · Mar 19 – Apr 2
TomatoesStart indoors · Feb 12 – Feb 26
TomatoesTransplant · Apr 16 – Apr 30
Peppers, eggplantStart indoors · Jan 29 – Feb 12
Peppers, eggplantTransplant · Apr 23 – May 7
BeansSow outdoors · Apr 16 – Apr 30
Sweet cornSow outdoors · Apr 16 – Apr 30
Cucumbers, squashSow outdoors · Apr 16 – Apr 30
Fall lettuce, spinachSow outdoors · Sep 1 – Sep 15
GarlicPlant cloves · Oct 13 – Nov 17
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 9) and first fall frost (Oct 27) 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 42142 came on Mar 2 — about the same time as the 1991–2020 average (Mar 2).

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).

Native plants for zone 7a in Kentucky

547 plants native to the lower 48 states, recorded in Kentucky, and rated by the USDA to survive 0 °F or colder — the bottom of zone 7a. Each links to its USDA PLANTS profile.

Trees 78

American basswood100 ft · blooms late spring · low shade tolerance · to −46 °FAmerican beech80 ft · blooms mid spring · low shade tolerance · to −44 °FAmerican chestnut115 ft · blooms early summer · high shade tolerance · to −33 °FAmerican elm120 ft · blooms early spring · medium shade tolerance · to −46 °FAmerican sycamore100 ft · blooms spring · medium shade tolerance · to −34 °Farborvitae50 ft · blooms mid spring · medium shade tolerance · to −33 °F

Shrubs 109

alderleaf buckthorn3 ft · blooms late spring · low shade tolerance · to −33 °FAllegheny serviceberry35 ft · blooms early spring · low shade tolerance · to −38 °Falternateleaf dogwood25 ft · blooms mid spring · low shade tolerance · to −47 °FAmerican black currant3 ft · blooms early spring · to −46 °FAmerican hazelnut10 ft · blooms spring · medium shade tolerance · to −33 °FAmerican holly40 ft · blooms mid spring · low shade tolerance · to −20 °F

Wildflowers & perennials 181

American bur-reed3 ft · blooms indeterminate · medium shade tolerance · to −33 °FAmerican eelgrass1 ft · blooms mid summer · high shade tolerance · to −33 °FAmerican lotus3 ft · blooms mid summer · high shade tolerance · to −36 °FAmerican pokeweed7 ft · blooms mid summer · low shade tolerance · to −33 °FAmerican speedwell0.8 ft · blooms mid summer · low shade tolerance · to −38 °FAmerican spongeplant0.5 ft · blooms mid spring · high shade tolerance · to −24 °F

Grasses 153

autumn bluegrass1.5 ft · blooms late spring · medium shade tolerance · to −8 °Fawlfruit sedge4 ft · blooms mid spring · low shade tolerance · to −38 °FBailey's sedge2.1 ft · blooms late spring · low shade tolerance · to −33 °Fbig bluestem6 ft · blooms summer · high shade tolerance · to −46 °Fblister sedge3 ft · blooms late spring · medium shade tolerance · to −38 °Fbluejoint5 ft · blooms late spring · high shade tolerance · to −33 °F

Vines 14

American bittersweet15 ft · blooms spring · low shade tolerance · to −38 °FAmerican wisteria50 ft · blooms spring · low shade tolerance · to −3 °Fcatbird grape30 ft · blooms late spring · medium shade tolerance · to −13 °Fcupseed30 ft · blooms late spring · low shade tolerance · to −3 °Fdevil's darning needles15 ft · blooms mid summer · medium shade tolerance · to −38 °Ffrost grape83 ft · blooms late spring · medium shade tolerance · to −23 °F

Source: USDA, NRCS. 2026. The PLANTS Database (plants.usda.gov), National Plant Data Team — state distribution, native status and the “Temperature, Minimum” characteristic. Check light, moisture and soil needs before buying; local nurseries and your state native plant society can confirm what thrives in Glasgow, KY.

Soil in Glasgow, KY

The soil mapped at the center of ZIP 42142 is Baxter — gravelly silt loam, well drained.

TextureGravelly silt loama good balance for most vegetables
pH5.5moderately acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter3%moderate
Hydrologic groupBwater soaks in moderately
Farmland classFarmland of statewide importanceUSDA classification

Map unit: Baxter gravelly silt loam, 6 to 12 percent slopes, eroded.

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 42142; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Glasgow, KY

Summer high90 °Faverage high, July
Winter low29 °Faverage low, January
Hot days52days a year at 90 °F or more
Freezing nights80nights a year at 32 °F or less
Growing degree days4,756base 50 °F — the season’s usable heat
Longest day14 h 42 mindaylight on June 21
Shortest day9 h 37 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation54.9 inper year, rain and melted snow
Snowfall6 inper year

Average high and low, by month

20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 47 °F, low 29 °F 47°29° JanFebruary: average high 52 °F, low 31 °F 52°31° FebMarch: average high 62 °F, low 39 °F 62°39° MarApril: average high 73 °F, low 47 °F 73°47° AprMay: average high 81 °F, low 56 °F 81°56° MayJune: average high 87 °F, low 64 °F 87°64° JunJuly: average high 90 °F, low 68 °F 90°68° JulAugust: average high 90 °F, low 66 °F 90°66° AugSeptember: average high 84 °F, low 59 °F 84°59° SepOctober: average high 74 °F, low 48 °F 74°48° OctNovember: average high 60 °F, low 39 °F 60°39° NovDecember: average high 51 °F, low 32 °F 51°32° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″6″January: 4.14 in precipitation, 2.2 in snowfall 4.1❄2 JanFebruary: 4.40 in precipitation, 1.7 in snowfall 4.4❄2 FebMarch: 5.15 in precipitation, 0.9 in snowfall 5.2❄1 MarApril: 5.27 in precipitation 5.3 AprMay: 5.77 in precipitation 5.8 MayJune: 4.88 in precipitation 4.9 JunJuly: 4.97 in precipitation 5.0 JulAugust: 3.44 in precipitation 3.4 AugSeptember: 3.79 in precipitation 3.8 SepOctober: 3.74 in precipitation 3.7 OctNovember: 3.92 in precipitation 3.9 NovDecember: 5.41 in precipitation, 0.9 in snowfall 5.4❄1 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Glasgow, KY (within 1 mile); precipitation: Glasgow, KY (within 1 mile). Daylight is calculated from latitude.

ZIP codes in Glasgow

421417a
0 to 5 °F
421427a
0 to 5 °F

Kentucky planting zones →

Questions about Glasgow

What planting zone is Glasgow, KY?

Glasgow, KY is in USDA hardiness zone 7a on the 2023 map (7a: 0 to 5 °F).

When is the last frost in Glasgow, KY?

The median last spring frost is April 9 and the median first fall frost is October 27 (NOAA 1991–2020 normals, Glasgow station).

When can I plant a garden in Glasgow, KY?

Cool-season crops like peas and spinach go in around Feb 26 – Mar 19; tomatoes, peppers, beans and squash after about Apr 16, once frost risk has passed.

What kind of onions grow in Glasgow, KY?

Intermediate onions: the longest day is 14 h 42 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

How much rain and snow does Glasgow, KY get?

About 54.9 inches of precipitation a year and 6 inches of snowfall (NOAA 1991–2020 normals).