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

Planting zone for 68758 — Newman Grove, NE

ZIP code 68758 (Newman Grove, Madison County) is in USDA zone 5b: the coldest winter night averages −15 to −10 °F. The median last spring frost is May 1 and the first fall frost October 5.

Where ZIP 68758 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.

Zone5b−15 to −10 °F
Coldest night−26.1 to −23.3 °C
Last frostMay 1
First frostOct 5
2012 zone5a

Was 5a 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 5b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Newman Grove, 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 Newman Grove, NE

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMay 1median — 50% chance of a later frost
Safe for tender plantsMay 12only 10% chance of frost after
First fall frostOctober 5median — 10% chance by Sep 22
Growing season157 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 22 and returns around October 16.

From the NOAA station Albion, NE — 13 miles away, elevation 1,795 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 68758

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 20 – Apr 3
SpinachSow outdoors · Mar 20 – Apr 10
Broccoli, cabbageStart indoors · Feb 20 – Mar 6
Broccoli, cabbageTransplant · Apr 10 – Apr 24
Onion setsPlant outdoors · Apr 3 – Apr 17
PotatoesPlant outdoors · Apr 10 – Apr 24
LettuceSow outdoors · Apr 3 – Apr 17
Carrots, beetsSow outdoors · Apr 10 – Apr 24
TomatoesStart indoors · Mar 6 – Mar 20
TomatoesTransplant · May 8 – May 22
Peppers, eggplantStart indoors · Feb 20 – Mar 6
Peppers, eggplantTransplant · May 15 – May 29
BeansSow outdoors · May 8 – May 22
Sweet cornSow outdoors · May 8 – May 22
Cucumbers, squashSow outdoors · May 8 – May 22
Fall lettuce, spinachSow outdoors · Aug 10 – Aug 24
GarlicPlant cloves · Sep 21 – Oct 26
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 1) and first fall frost (Oct 5) 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 68758 came on Mar 14 — 22 days earlier than the 1991–2020 average (Apr 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).

Native plants for zone 5b in Nebraska

420 plants native to the lower 48 states, recorded in Nebraska, and rated by the USDA to survive −15 °F or colder — the bottom of zone 5b. 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 190

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 130

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 Newman Grove, NE.

Soil in Newman Grove, NE

The soil mapped at the center of ZIP 68758 is Nora — silt loam, well drained.

TextureSilt loama good balance for most vegetables
pH6.8neutral; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter2.75%moderate
Hydrologic groupCwater soaks in slowly
Farmland classprime farmlandUSDA classification

Map unit: Nora silt loam, 2 to 6 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 68758; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Newman Grove, NE

Summer high85 °Faverage high, July
Winter low11 °Faverage low, January
Hot days22days a year at 90 °F or more
Freezing nights161nights a year at 32 °F or less
Growing degree days2,932base 50 °F — the season’s usable heat
Longest day15 h 13 mindaylight on June 21
Shortest day9 h 08 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation27.2 inper year, rain and melted snow
Snowfall27 inper year; 45 days with snow on the ground

Average high and low, by month

0°10°20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 33 °F, low 11 °F 33°11° JanFebruary: average high 37 °F, low 15 °F 37°15° FebMarch: average high 49 °F, low 24 °F 49°24° MarApril: average high 60 °F, low 34 °F 60°34° AprMay: average high 71 °F, low 47 °F 71°47° MayJune: average high 81 °F, low 58 °F 81°58° JunJuly: average high 85 °F, low 63 °F 85°63° JulAugust: average high 83 °F, low 60 °F 83°60° AugSeptember: average high 76 °F, low 50 °F 76°50° SepOctober: average high 63 °F, low 37 °F 63°37° OctNovember: average high 49 °F, low 24 °F 49°24° NovDecember: average high 36 °F, low 15 °F 36°15° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 0.55 in precipitation, 5.3 in snowfall 0.6❄5 JanFebruary: 0.70 in precipitation, 6.4 in snowfall 0.7❄6 FebMarch: 1.67 in precipitation, 5 in snowfall 1.7❄5 MarApril: 2.67 in precipitation, 2.3 in snowfall 2.7❄2 AprMay: 4.22 in precipitation, 0.1 in snowfall 4.2 MayJune: 3.77 in precipitation 3.8 JunJuly: 3.31 in precipitation 3.3 JulAugust: 3.52 in precipitation 3.5 AugSeptember: 2.69 in precipitation 2.7 SepOctober: 2.14 in precipitation, 0.9 in snowfall 2.1❄1 OctNovember: 1.18 in precipitation, 3.1 in snowfall 1.2❄3 NovDecember: 0.81 in precipitation, 3.5 in snowfall 0.8❄4 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Albion, NE (13 mi away); precipitation: Albion, NE (13 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.

686445b
Lindsay, NE · 8 mi
686205b
Albion, NE · 14 mi
686605b
Saint Edward, NE · 15 mi
686425b
Humphrey, NE · 15 mi
687155b
Battle Creek, NE · 16 mi
686525b
Petersburg, NE · 17 mi
687525b
Meadow Grove, NE · 17 mi
687815a
Tilden, NE · 17 mi

Nebraska planting zones →

Questions about 68758

What planting zone is ZIP code 68758?

ZIP code 68758 (Newman Grove, NE) is in USDA hardiness zone 5b on the 2023 map: the coldest night of an average winter reaches −15 to −10 °F (−26.1 to −23.3 °C).

When is the last frost in Newman Grove, NE?

The median last spring frost (32 °F) near 68758 is May 1; after May 12 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Albion station.

When is the first frost in Newman Grove, NE?

The median first fall frost near 68758 is October 5, giving a median frost-free growing season of 157 days.

When should I plant tomatoes in 68758?

Start tomato seeds indoors around Mar 6 – Mar 20 and set transplants outside around May 8 – May 22, one to three weeks after the median last frost.

How much rain and snow does 68758 get?

About 27.2 inches of precipitation a year and 27 inches of snowfall (NOAA 1991–2020 normals, Albion station).

How hot do summers get in Newman Grove, NE?

The average high peaks at 85 °F in July, with about 22 days a year at 90 °F or more.

What kind of soil does 68758 have?

The USDA soil survey maps Nora at the center of ZIP 68758: silt loam, well drained, pH about 6.8 (neutral).

Did spring come early in Newman Grove, NE in 2026?

Spring leaf-out near 68758 came on Mar 14 in 2026, 22 days earlier than the 1991–2020 average (Apr 5), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Newman Grove, NE?

Long-day onions: the longest day near 68758 is 15 h 13 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 68758 change?

Yes. The 2012 USDA map put 68758 in zone 5a; the 2023 map puts it in zone 5b. The newer map uses 1991–2020 data and more weather stations.