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

Planting zone for 65034 — Fortuna, MO

ZIP code 65034 (Fortuna, Moniteau County) is in USDA zone 6b: the coldest winter night averages −5 to 0 °F. The median last spring frost is April 8 and the first fall frost October 29.

Where ZIP 65034 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.

Zone6b−5 to 0 °F
Coldest night−20.6 to −17.8 °C
Last frostApr 8
First frostOct 29
2012 zone6a

Was 6a 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 6b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Fortuna, MO…

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 Fortuna, MO

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 8median — 50% chance of a later frost
Safe for tender plantsApril 30only 10% chance of frost after
First fall frostOctober 29median — 10% chance by Oct 16
Growing season202 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 29 and returns around November 7.

From the NOAA station Versailles, MO — 9 miles away, elevation 1,004 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 65034

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 25 – Mar 11
SpinachSow outdoors · Feb 25 – Mar 18
Broccoli, cabbageStart indoors · Jan 28 – Feb 11
Broccoli, cabbageTransplant · Mar 18 – Apr 1
Onion setsPlant outdoors · Mar 11 – Mar 25
PotatoesPlant outdoors · Mar 18 – Apr 1
LettuceSow outdoors · Mar 11 – Mar 25
Carrots, beetsSow outdoors · Mar 18 – Apr 1
TomatoesStart indoors · Feb 11 – Feb 25
TomatoesTransplant · Apr 15 – Apr 29
Peppers, eggplantStart indoors · Jan 28 – Feb 11
Peppers, eggplantTransplant · Apr 22 – May 6
BeansSow outdoors · Apr 15 – Apr 29
Sweet cornSow outdoors · Apr 15 – Apr 29
Cucumbers, squashSow outdoors · Apr 15 – Apr 29
Fall lettuce, spinachSow outdoors · Sep 3 – Sep 17
GarlicPlant cloves · Oct 15 – Nov 19
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 8) and first fall frost (Oct 29) 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 65034 came on Feb 28 — 14 days earlier than the 1991–2020 average (Mar 14).

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 Fortuna, MO

The soil mapped at the center of ZIP 65034 is Speed — silt loam, somewhat poorly drained.

TextureSilt loama good balance for most vegetables
pH6.5neutral; most vegetables like 6.0–7.0
DrainageSomewhat poorly drainedconsider raised beds
Organic matter2%moderate
Hydrologic groupB/Dmoderate when drained; wet otherwise
Farmland classPrime farmland if drainedUSDA classification

Map unit: Speed silt loam, 1 to 3 percent slopes, rarely 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 65034; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Fortuna, MO

Summer high88 °Faverage high, July
Winter low22 °Faverage low, January
Hot days30days a year at 90 °F or more
Freezing nights109nights a year at 32 °F or less
Growing degree days4,143base 50 °F — the season’s usable heat
Longest day14 h 52 mindaylight on June 21
Shortest day9 h 28 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation44.9 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 41 °F, low 22 °F 41°22° JanFebruary: average high 46 °F, low 26 °F 46°26° FebMarch: average high 57 °F, low 35 °F 57°35° MarApril: average high 67 °F, low 45 °F 67°45° AprMay: average high 75 °F, low 56 °F 75°56° MayJune: average high 83 °F, low 65 °F 83°65° JunJuly: average high 88 °F, low 69 °F 88°69° JulAugust: average high 87 °F, low 67 °F 87°67° AugSeptember: average high 79 °F, low 59 °F 79°59° SepOctober: average high 68 °F, low 47 °F 68°47° OctNovember: average high 55 °F, low 36 °F 55°36° NovDecember: average high 44 °F, low 26 °F 44°26° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 1.76 in precipitation 1.8 JanFebruary: 2.59 in precipitation 2.6 FebMarch: 3.30 in precipitation 3.3 MarApril: 4.62 in precipitation 4.6 AprMay: 5.35 in precipitation 5.3 MayJune: 5.33 in precipitation 5.3 JunJuly: 4.27 in precipitation 4.3 JulAugust: 3.62 in precipitation 3.6 AugSeptember: 4.27 in precipitation 4.3 SepOctober: 3.74 in precipitation 3.7 OctNovember: 3.61 in precipitation 3.6 NovDecember: 2.48 in precipitation 2.5 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Versailles, MO (9 mi away); precipitation: Versailles, MO (9 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 6b.

650816b
Tipton, MO · 6 mi
653546b
Syracuse, MO · 7 mi
650506b
Latham, MO · 8 mi
653296b
Florence, MO · 8 mi
650846b
Versailles, MO · 9 mi
650256b
Clarksburg, MO · 10 mi
650116b
Barnett, MO · 12 mi
650556b
Mc Girk, MO · 14 mi

Missouri planting zones →

Questions about 65034

What planting zone is ZIP code 65034?

ZIP code 65034 (Fortuna, MO) is in USDA hardiness zone 6b on the 2023 map: the coldest night of an average winter reaches −5 to 0 °F (−20.6 to −17.8 °C).

When is the last frost in Fortuna, MO?

The median last spring frost (32 °F) near 65034 is April 8; after April 30 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Versailles station.

When is the first frost in Fortuna, MO?

The median first fall frost near 65034 is October 29, giving a median frost-free growing season of 202 days.

When should I plant tomatoes in 65034?

Start tomato seeds indoors around Feb 11 – Feb 25 and set transplants outside around Apr 15 – Apr 29, one to three weeks after the median last frost.

How much rain and snow does 65034 get?

About 44.9 inches of precipitation a year (NOAA 1991–2020 normals, Versailles station).

How hot do summers get in Fortuna, MO?

The average high peaks at 88 °F in July, with about 30 days a year at 90 °F or more.

What kind of soil does 65034 have?

The USDA soil survey maps Speed at the center of ZIP 65034: silt loam, somewhat poorly drained, pH about 6.5 (neutral).

Did spring come early in Fortuna, MO in 2026?

Spring leaf-out near 65034 came on Feb 28 in 2026, 14 days earlier than the 1991–2020 average (Mar 14), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Fortuna, MO?

Intermediate onions: the longest day near 65034 is 14 h 52 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 65034 change?

Yes. The 2012 USDA map put 65034 in zone 6a; the 2023 map puts it in zone 6b. The newer map uses 1991–2020 data and more weather stations.