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

Planting zone for 74346 — Jay, OK

ZIP code 74346 (Jay, Delaware County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is April 16 and the first fall frost October 20.

Where ZIP 74346 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 16
First frostOct 20
2012 zone7a

Same zone as on the 2012 map. 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 Jay, OK…

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 Jay, OK

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 16median — 50% chance of a later frost
Safe for tender plantsMay 1only 10% chance of frost after
First fall frostOctober 20median — 10% chance by Oct 6
Growing season187 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 3 and returns around October 30.

From the NOAA station Upper Spavinaw Port, OK — 7 miles away, elevation 794 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 74346

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 5 – Mar 19
SpinachSow outdoors · Mar 5 – Mar 26
Broccoli, cabbageStart indoors · Feb 5 – Feb 19
Broccoli, cabbageTransplant · Mar 26 – Apr 9
Onion setsPlant outdoors · Mar 19 – Apr 2
PotatoesPlant outdoors · Mar 26 – Apr 9
LettuceSow outdoors · Mar 19 – Apr 2
Carrots, beetsSow outdoors · Mar 26 – Apr 9
TomatoesStart indoors · Feb 19 – Mar 5
TomatoesTransplant · Apr 23 – May 7
Peppers, eggplantStart indoors · Feb 5 – Feb 19
Peppers, eggplantTransplant · Apr 30 – May 14
BeansSow outdoors · Apr 23 – May 7
Sweet cornSow outdoors · Apr 23 – May 7
Cucumbers, squashSow outdoors · Apr 23 – May 7
Fall lettuce, spinachSow outdoors · Aug 25 – Sep 8
GarlicPlant cloves · Oct 6 – Nov 10
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 16) and first fall frost (Oct 20) 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 74346 came on Feb 15 — 12 days earlier than the 1991–2020 average (Feb 27).

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 Jay, OK

The soil mapped at the center of ZIP 74346 is Clarksville — very gravelly slightly decomposed plant material, somewhat excessively drained.

TextureVery gravelly slightly decomposed plant materialtop layer
pH4.4strongly acidic; most vegetables like 6.0–7.0
DrainageSomewhat excessively drainednatural drainage class
Organic matter69%high
Hydrologic groupBwater soaks in moderately
Farmland classNot prime farmlandUSDA classification

Map unit: Clarksville very gravelly silt loam, 1 to 8 percent slopes.

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 74346; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Jay, OK

Summer high91 °Faverage high, July
Winter low23 °Faverage low, January
Hot days57days a year at 90 °F or more
Freezing nights102nights a year at 32 °F or less
Growing degree days4,339base 50 °F — the season’s usable heat
Longest day14 h 39 mindaylight on June 21
Shortest day9 h 40 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation49.3 inper year, rain and melted snow

Average high and low, by month

10°20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 49 °F, low 23 °F 49°23° JanFebruary: average high 54 °F, low 26 °F 54°26° FebMarch: average high 63 °F, low 34 °F 63°34° MarApril: average high 72 °F, low 43 °F 72°43° AprMay: average high 79 °F, low 53 °F 79°53° MayJune: average high 86 °F, low 62 °F 86°62° JunJuly: average high 91 °F, low 67 °F 91°67° JulAugust: average high 91 °F, low 65 °F 91°65° AugSeptember: average high 83 °F, low 56 °F 83°56° SepOctober: average high 73 °F, low 43 °F 73°43° OctNovember: average high 62 °F, low 34 °F 62°34° NovDecember: average high 52 °F, low 26 °F 52°26° Dec

Precipitation by month inches

0″2″4″6″January: 2.42 in precipitation 2.4 JanFebruary: 2.46 in precipitation 2.5 FebMarch: 3.82 in precipitation 3.8 MarApril: 5.13 in precipitation 5.1 AprMay: 6.48 in precipitation 6.5 MayJune: 5.06 in precipitation 5.1 JunJuly: 4.24 in precipitation 4.2 JulAugust: 3.74 in precipitation 3.7 AugSeptember: 4.56 in precipitation 4.6 SepOctober: 4.31 in precipitation 4.3 OctNovember: 4.14 in precipitation 4.1 NovDecember: 2.96 in precipitation 3.0 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Upper Spavinaw Port, OK (7 mi away); precipitation: Jay 3.3 Nne, OK (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 7a.

743427a
Eucha, OK · 11 mi
727477a
Maysville, AR · 11 mi
743447a
Grove, OK · 11 mi
743457a
Grove, OK · 11 mi
648637a
South West City, MO · 13 mi
743387a
Colcord, OK · 13 mi
743407a
Disney, OK · 15 mi
743667a
Spavinaw, OK · 16 mi

Oklahoma planting zones →

Questions about 74346

What planting zone is ZIP code 74346?

ZIP code 74346 (Jay, OK) 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 Jay, OK?

The median last spring frost (32 °F) near 74346 is April 16; after May 1 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Upper Spavinaw Port station.

When is the first frost in Jay, OK?

The median first fall frost near 74346 is October 20, giving a median frost-free growing season of 187 days.

When should I plant tomatoes in 74346?

Start tomato seeds indoors around Feb 19 – Mar 5 and set transplants outside around Apr 23 – May 7, one to three weeks after the median last frost.

How much rain and snow does 74346 get?

About 49.3 inches of precipitation a year (NOAA 1991–2020 normals, Jay 3.3 Nne station).

How hot do summers get in Jay, OK?

The average high peaks at 91 °F in July, with about 57 days a year at 90 °F or more.

What kind of soil does 74346 have?

The USDA soil survey maps Clarksville at the center of ZIP 74346: very gravelly slightly decomposed plant material, somewhat excessively drained, pH about 4.4 (strongly acidic).

Did spring come early in Jay, OK in 2026?

Spring leaf-out near 74346 came on Feb 15 in 2026, 12 days earlier than the 1991–2020 average (Feb 27), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Jay, OK?

Intermediate onions: the longest day near 74346 is 14 h 39 min, so day-neutral types bulb best; long-day varieties may not bulb fully.