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

Planting zone for 69350 — Hyannis, NE

ZIP code 69350 (Hyannis, Grant County) is in USDA zone 5a: the coldest winter night averages −20 to −15 °F. The median last spring frost is May 4 and the first fall frost October 8.

Where ZIP 69350 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.

Zone5a−20 to −15 °F
Coldest night−28.9 to −26.1 °C
Last frostMay 4
First frostOct 8
2012 zone5a

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 5a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Hyannis, NE…

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 Hyannis, NE

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMay 4median — 50% chance of a later frost
Safe for tender plantsMay 16only 10% chance of frost after
First fall frostOctober 8median — 10% chance by Sep 25
Growing season155 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 25 and returns around October 17.

From the NOAA station Whitman 5 Ene, NE — 18 miles away, elevation 3,740 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 69350

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 23 – Apr 6
SpinachSow outdoors · Mar 23 – Apr 13
Broccoli, cabbageStart indoors · Feb 23 – Mar 9
Broccoli, cabbageTransplant · Apr 13 – Apr 27
Onion setsPlant outdoors · Apr 6 – Apr 20
PotatoesPlant outdoors · Apr 13 – Apr 27
LettuceSow outdoors · Apr 6 – Apr 20
Carrots, beetsSow outdoors · Apr 13 – Apr 27
TomatoesStart indoors · Mar 9 – Mar 23
TomatoesTransplant · May 11 – May 25
Peppers, eggplantStart indoors · Feb 23 – Mar 9
Peppers, eggplantTransplant · May 18 – Jun 1
BeansSow outdoors · May 11 – May 25
Sweet cornSow outdoors · May 11 – May 25
Cucumbers, squashSow outdoors · May 11 – May 25
Fall lettuce, spinachSow outdoors · Aug 13 – Aug 27
GarlicPlant cloves · Sep 24 – Oct 29
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 4) and first fall frost (Oct 8) 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 69350 came on Mar 7 — 27 days earlier than the 1991–2020 average (Apr 3).

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 5a in Nebraska

413 plants native to the lower 48 states, recorded in Nebraska, and rated by the USDA to survive −20 °F or colder — the bottom of zone 5a. Each links to its USDA PLANTS profile.

Trees 31

American basswood100 ft · blooms late spring · low shade tolerance · to −46 °FAmerican elm120 ft · blooms early spring · medium shade tolerance · to −46 °FAmerican sycamore100 ft · blooms spring · medium shade tolerance · to −34 °Fbitternut hickory75 ft · blooms mid spring · high shade tolerance · to −47 °Fblack locust60 ft · blooms spring · high shade tolerance · to −37 °Fblack oak80 ft · blooms early spring · medium shade tolerance · to −30 °F

Shrubs 55

alderleaf mountain mahogany15 ft · blooms late spring · medium shade tolerance · to −41 °FAmerican black currant3 ft · blooms early spring · to −46 °FAmerican hazelnut10 ft · blooms spring · medium shade tolerance · to −33 °FAmerican plum24 ft · blooms mid spring · high shade tolerance · to −38 °Fantelope bitterbrush6 ft · blooms early spring · medium shade tolerance · to −36 °Fbig sagebrush4 ft · blooms mid summer · high shade tolerance · to −43 °F

Wildflowers & perennials 184

alkali buttercup1 ft · blooms late spring · low shade tolerance · to −38 °Falpine sweetvetch2 ft · blooms early summer · high shade tolerance · to −62 °FAmerican licorice4 ft · blooms late spring · medium shade tolerance · to −38 °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 °F

Grasses 129

alkali cordgrass3 ft · blooms late summer · high shade tolerance · to −38 °Falkali sacaton3 ft · blooms mid summer · high shade tolerance · to −38 °Fawlfruit sedge4 ft · blooms mid spring · low shade tolerance · to −38 °Fbasin wildrye5 ft · blooms early spring · high shade tolerance · to −43 °Fbeaked spikerush3 ft · blooms late spring · high shade tolerance · to −28 °FBebb's sedge3 ft · blooms late spring · low shade tolerance · to −38 °F

Vines 7

American bittersweet15 ft · blooms spring · low shade tolerance · to −38 °Fdevil's darning needles15 ft · blooms mid summer · medium shade tolerance · to −38 °Ffrost grape83 ft · blooms late spring · medium shade tolerance · to −23 °Friverbank grape45 ft · blooms late spring · medium shade tolerance · to −33 °Fsummer grape30 ft · blooms late spring · low shade tolerance · to −23 °FVirginia creeper1 ft · blooms late spring · medium shade tolerance · to −28 °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 Hyannis, NE.

Soil in Hyannis, NE

The soil mapped at the center of ZIP 69350 is Valentine — fine sand, excessively drained.

TextureFine sanddrains and warms fast; dries out and needs more feeding
pH6.5neutral; most vegetables like 6.0–7.0
DrainageExcessively drainednatural drainage class
Organic matter0.75%low — add compost
Hydrologic groupAwater soaks in fast
Farmland classNot prime farmlandUSDA classification

Map unit: Valentine fine sand, rolling, 9 to 24 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 69350; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Hyannis, NE

Summer high85 °Faverage high, July
Winter low16 °Faverage low, January
Hot days24days a year at 90 °F or more
Freezing nights153nights a year at 32 °F or less
Growing degree days2,644base 50 °F — the season’s usable heat
Longest day15 h 14 mindaylight on June 21
Shortest day9 h 07 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation18.3 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 36 °F, low 16 °F 36°16° JanFebruary: average high 38 °F, low 18 °F 38°18° FebMarch: average high 49 °F, low 26 °F 49°26° MarApril: average high 57 °F, low 34 °F 57°34° AprMay: average high 67 °F, low 44 °F 67°44° MayJune: average high 78 °F, low 55 °F 78°55° JunJuly: average high 85 °F, low 60 °F 85°60° JulAugust: average high 84 °F, low 58 °F 84°58° AugSeptember: average high 75 °F, low 49 °F 75°49° SepOctober: average high 60 °F, low 37 °F 60°37° OctNovember: average high 48 °F, low 26 °F 48°26° NovDecember: average high 37 °F, low 18 °F 37°18° Dec

Precipitation by month inches

0″1″2″3″4″January: 0.33 in precipitation 0.3 JanFebruary: 0.39 in precipitation 0.4 FebMarch: 0.98 in precipitation 1.0 MarApril: 2.03 in precipitation 2.0 AprMay: 2.96 in precipitation 3.0 MayJune: 2.77 in precipitation 2.8 JunJuly: 3.34 in precipitation 3.3 JulAugust: 2.02 in precipitation 2.0 AugSeptember: 1.61 in precipitation 1.6 SepOctober: 1.15 in precipitation 1.1 OctNovember: 0.46 in precipitation 0.5 NovDecember: 0.27 in precipitation 0.3 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Whitman 5 Ene, NE (18 mi away); precipitation: Whitman 5 Ene, NE (18 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

693665b
Whitman, NE · 12 mi
693335a
Ashby, NE · 12 mi
693355a
Bingham, NE · 20 mi
693405a
Ellsworth, NE · 26 mi
691215b
Arthur, NE · 29 mi
691475b
Lewellen, NE · 32 mi
693515a
Lakeside, NE · 35 mi
691465b
Lemoyne, NE · 43 mi

Nebraska planting zones →

Questions about 69350

What planting zone is ZIP code 69350?

ZIP code 69350 (Hyannis, NE) is in USDA hardiness zone 5a on the 2023 map: the coldest night of an average winter reaches −20 to −15 °F (−28.9 to −26.1 °C).

When is the last frost in Hyannis, NE?

The median last spring frost (32 °F) near 69350 is May 4; after May 16 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Whitman 5 Ene station.

When is the first frost in Hyannis, NE?

The median first fall frost near 69350 is October 8, giving a median frost-free growing season of 155 days.

When should I plant tomatoes in 69350?

Start tomato seeds indoors around Mar 9 – Mar 23 and set transplants outside around May 11 – May 25, one to three weeks after the median last frost.

How much rain and snow does 69350 get?

About 18.3 inches of precipitation a year (NOAA 1991–2020 normals, Whitman 5 Ene station).

How hot do summers get in Hyannis, NE?

The average high peaks at 85 °F in July, with about 24 days a year at 90 °F or more.

What kind of soil does 69350 have?

The USDA soil survey maps Valentine at the center of ZIP 69350: fine sand, excessively drained, pH about 6.5 (neutral).

Did spring come early in Hyannis, NE in 2026?

Spring leaf-out near 69350 came on Mar 7 in 2026, 27 days earlier than the 1991–2020 average (Apr 3), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Hyannis, NE?

Long-day onions: the longest day near 69350 is 15 h 14 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).