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

Planting zone for 47438 — Jasonville, IN

ZIP code 47438 (Jasonville, Greene County) is in USDA zone 6a: the coldest winter night averages −10 to −5 °F. The median last spring frost is April 14 and the first fall frost October 26.

Where ZIP 47438 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.

Zone6a−10 to −5 °F
Coldest night−23.3 to −20.6 °C
Last frostApr 14
First frostOct 26
2012 zone6a

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 6a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Jasonville, IN…

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 Jasonville, IN

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 14median — 50% chance of a later frost
Safe for tender plantsMay 1only 10% chance of frost after
First fall frostOctober 26median — 10% chance by Oct 12
Growing season193 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 1 and returns around November 3.

From the NOAA station Shakamak Sp, IN — 4 miles away, elevation 548 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 47438

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 3 – Mar 17
SpinachSow outdoors · Mar 3 – Mar 24
Broccoli, cabbageStart indoors · Feb 3 – Feb 17
Broccoli, cabbageTransplant · Mar 24 – Apr 7
Onion setsPlant outdoors · Mar 17 – Mar 31
PotatoesPlant outdoors · Mar 24 – Apr 7
LettuceSow outdoors · Mar 17 – Mar 31
Carrots, beetsSow outdoors · Mar 24 – Apr 7
TomatoesStart indoors · Feb 17 – Mar 3
TomatoesTransplant · Apr 21 – May 5
Peppers, eggplantStart indoors · Feb 3 – Feb 17
Peppers, eggplantTransplant · Apr 28 – May 12
BeansSow outdoors · Apr 21 – May 5
Sweet cornSow outdoors · Apr 21 – May 5
Cucumbers, squashSow outdoors · Apr 21 – May 5
Fall lettuce, spinachSow outdoors · Aug 31 – Sep 14
GarlicPlant cloves · Oct 12 – Nov 16
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 14) and first fall frost (Oct 26) 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 47438 came on Mar 8 — 14 days earlier than the 1991–2020 average (Mar 22).

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 Jasonville, IN

The soil mapped at the center of ZIP 47438 is Stendal — silt loam, somewhat poorly drained.

TextureSilt loama good balance for most vegetables
pH5.9moderately acidic; most vegetables like 6.0–7.0
DrainageSomewhat poorly drainedconsider raised beds
Organic matter1.75%low — add compost
Hydrologic groupB/Dmoderate when drained; wet otherwise
Farmland classPrime farmland if drained and either protected from flooding or not frequently flooded during the growing seasonUSDA classification

Map unit: Stendal silt loam, frequently flooded.

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 47438; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Jasonville, IN

Summer high86 °Faverage high, July
Winter low21 °Faverage low, January
Hot days19days a year at 90 °F or more
Freezing nights113nights a year at 32 °F or less
Growing degree days3,846base 50 °F — the season’s usable heat
Longest day14 h 55 mindaylight on June 21
Shortest day9 h 25 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation47.4 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 38 °F, low 21 °F 38°21° JanFebruary: average high 43 °F, low 24 °F 43°24° FebMarch: average high 53 °F, low 33 °F 53°33° MarApril: average high 66 °F, low 44 °F 66°44° AprMay: average high 75 °F, low 54 °F 75°54° MayJune: average high 83 °F, low 63 °F 83°63° JunJuly: average high 86 °F, low 66 °F 86°66° JulAugust: average high 85 °F, low 65 °F 85°65° AugSeptember: average high 79 °F, low 57 °F 79°57° SepOctober: average high 68 °F, low 45 °F 68°45° OctNovember: average high 54 °F, low 34 °F 54°34° NovDecember: average high 43 °F, low 26 °F 43°26° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 3.30 in precipitation 3.3 JanFebruary: 2.66 in precipitation 2.7 FebMarch: 3.67 in precipitation 3.7 MarApril: 4.99 in precipitation 5.0 AprMay: 4.98 in precipitation 5.0 MayJune: 5.02 in precipitation 5.0 JunJuly: 4.68 in precipitation 4.7 JulAugust: 3.28 in precipitation 3.3 AugSeptember: 3.73 in precipitation 3.7 SepOctober: 4.00 in precipitation 4.0 OctNovember: 3.83 in precipitation 3.8 NovDecember: 3.27 in precipitation 3.3 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Shakamak Sp, IN (4 mi away); precipitation: Jasonville 4.0 Ene, IN (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

474456a
Midland, IN · 3 mi
478456a
Coalmont, IN · 4 mi
478556a
Hymera, IN · 7 mi
478586a
Lewis, IN · 8 mi
474416b
Linton, IN · 8 mi
478416a
Clay City, IN · 9 mi
478486b
Dugger, IN · 9 mi
474716b
Worthington, IN · 9 mi

Indiana planting zones →

Questions about 47438

What planting zone is ZIP code 47438?

ZIP code 47438 (Jasonville, IN) is in USDA hardiness zone 6a on the 2023 map: the coldest night of an average winter reaches −10 to −5 °F (−23.3 to −20.6 °C).

When is the last frost in Jasonville, IN?

The median last spring frost (32 °F) near 47438 is April 14; after May 1 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Shakamak Sp station.

When is the first frost in Jasonville, IN?

The median first fall frost near 47438 is October 26, giving a median frost-free growing season of 193 days.

When should I plant tomatoes in 47438?

Start tomato seeds indoors around Feb 17 – Mar 3 and set transplants outside around Apr 21 – May 5, one to three weeks after the median last frost.

How much rain and snow does 47438 get?

About 47.4 inches of precipitation a year (NOAA 1991–2020 normals, Jasonville 4.0 Ene station).

How hot do summers get in Jasonville, IN?

The average high peaks at 86 °F in July, with about 19 days a year at 90 °F or more.

What kind of soil does 47438 have?

The USDA soil survey maps Stendal at the center of ZIP 47438: silt loam, somewhat poorly drained, pH about 5.9 (moderately acidic).

Did spring come early in Jasonville, IN in 2026?

Spring leaf-out near 47438 came on Mar 8 in 2026, 14 days earlier than the 1991–2020 average (Mar 22), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Jasonville, IN?

Intermediate onions: the longest day near 47438 is 14 h 55 min, so day-neutral types bulb best; long-day varieties may not bulb fully.