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

Planting zone for 43916 — Colerain, OH

ZIP code 43916 (Colerain, Belmont 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 November 1.

Where ZIP 43916 is

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 frostNov 1
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 Colerain, OH…

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 Colerain, OH

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 6only 10% chance of frost after
First fall frostNovember 1median — 10% chance by Oct 18
Growing season196 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 5 and returns around November 10.

From the NOAA station Pike Island(Lock & Dam), WV — 6 miles away, elevation 640 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 43916

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 6 – Sep 20
GarlicPlant cloves · Oct 18 – Nov 22
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 18) and first fall frost (Nov 1) 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 43916 came on Mar 10 — 18 days earlier than the 1991–2020 average (Mar 28).

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 Colerain, OH

The soil mapped at the center of ZIP 43916 is Morristown — silty clay loam, well drained.

TextureSilty clay loamholds water and nutrients; slow to drain and warm up
pH7.5slightly alkaline; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter2%moderate
Hydrologic groupDwater soaks in very slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Morristown silty clay loam, 8 to 25 percent slopes, reclaimed.

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 43916; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Colerain, OH

Summer high83 °Faverage high, July
Winter low22 °Faverage low, January
Hot days9days a year at 90 °F or more
Freezing nights107nights a year at 32 °F or less
Growing degree days3,274base 50 °F — the season’s usable heat
Longest day15 h 02 mindaylight on June 21
Shortest day9 h 19 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation40.9 inper year, rain and melted snow
Snowfall15 inper year; 17 days with snow on the ground

Average high and low, by month

10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 37 °F, low 22 °F 37°22° JanFebruary: average high 40 °F, low 23 °F 40°23° FebMarch: average high 49 °F, low 30 °F 49°30° MarApril: average high 62 °F, low 40 °F 62°40° AprMay: average high 72 °F, low 50 °F 72°50° MayJune: average high 80 °F, low 60 °F 80°60° JunJuly: average high 83 °F, low 64 °F 83°64° JulAugust: average high 82 °F, low 63 °F 82°63° AugSeptember: average high 76 °F, low 57 °F 76°57° SepOctober: average high 65 °F, low 45 °F 65°45° OctNovember: average high 52 °F, low 35 °F 52°35° NovDecember: average high 42 °F, low 28 °F 42°28° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 3.16 in precipitation, 5.3 in snowfall 3.2❄5 JanFebruary: 2.45 in precipitation, 4.4 in snowfall 2.5❄4 FebMarch: 3.39 in precipitation, 2.6 in snowfall 3.4❄3 MarApril: 3.45 in precipitation, 0.1 in snowfall 3.5 AprMay: 3.99 in precipitation 4.0 MayJune: 4.47 in precipitation 4.5 JunJuly: 3.67 in precipitation 3.7 JulAugust: 3.87 in precipitation 3.9 AugSeptember: 3.65 in precipitation 3.6 SepOctober: 2.79 in precipitation 2.8 OctNovember: 2.86 in precipitation, 0.2 in snowfall 2.9 NovDecember: 3.17 in precipitation, 2.6 in snowfall 3.2❄3 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Pike Island(Lock & Dam), WV (6 mi away); precipitation: Pike Island(Lock & Dam), WV (6 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

439056b
Barton, OH · 1 mi
439126b
Bridgeport, OH · 2 mi
439396b
Mount Pleasant, OH · 3 mi
439377a
Maynard, OH · 3 mi
439346b
Lansing, OH · 3 mi
439096b
Blaine, OH · 4 mi
439356b
Martins Ferry, OH · 4 mi
439746b
Harrisville, OH · 6 mi

Ohio planting zones →

Questions about 43916

What planting zone is ZIP code 43916?

ZIP code 43916 (Colerain, OH) 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 Colerain, OH?

The median last spring frost (32 °F) near 43916 is April 18; after May 6 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Pike Island(Lock & Dam) station.

When is the first frost in Colerain, OH?

The median first fall frost near 43916 is November 1, giving a median frost-free growing season of 196 days.

When should I plant tomatoes in 43916?

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 43916 get?

About 40.9 inches of precipitation a year and 15 inches of snowfall (NOAA 1991–2020 normals, Pike Island(Lock & Dam) station).

How hot do summers get in Colerain, OH?

The average high peaks at 83 °F in July, with about 9 days a year at 90 °F or more.

What kind of soil does 43916 have?

The USDA soil survey maps Morristown at the center of ZIP 43916: silty clay loam, well drained, pH about 7.5 (slightly alkaline).

Did spring come early in Colerain, OH in 2026?

Spring leaf-out near 43916 came on Mar 10 in 2026, 18 days earlier than the 1991–2020 average (Mar 28), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Colerain, OH?

Long-day onions: the longest day near 43916 is 15 h 02 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 43916 change?

Yes. The 2012 USDA map put 43916 in zone 6b; the 2023 map puts it in zone 7a. The newer map uses 1991–2020 data and more weather stations.