Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated Oct 29, 2026

Planting zone for 97634 — Midland, OR

ZIP code 97634 (Midland, Klamath County) is in USDA zone 6b: the coldest winter night averages −5 to 0 °F. The median last spring frost is June 9 and the first fall frost September 18.

Where ZIP 97634 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 frostJun 9

First frostSep 18

2012 zone6b

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 6b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Midland, OR…

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 Midland, OR

JanFebMarAprMayJunJulAugSepOctNovDec

Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free

Last spring frostJune 9median — 50% chance of a later frost

Safe for tender plantsJune 26only 10% chance of frost after

First fall frostSeptember 18median — 10% chance by Sep 4

Growing season99 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 21 and returns around October 2.

From the NOAA station Klamath Falls Intl Airport, OR — 4 miles away, elevation 4,085 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 97634

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Apr 28 – May 12

SpinachSow outdoors · Apr 28 – May 19

Broccoli, cabbageStart indoors · Mar 31 – Apr 14

Broccoli, cabbageTransplant · May 19 – Jun 2

Onion setsPlant outdoors · May 12 – May 26

PotatoesPlant outdoors · May 19 – Jun 2

LettuceSow outdoors · May 12 – May 26

Carrots, beetsSow outdoors · May 19 – Jun 2

TomatoesStart indoors · Apr 14 – Apr 28

TomatoesTransplant · Jun 16 – Jun 30

Peppers, eggplantStart indoors · Mar 31 – Apr 14

Peppers, eggplantTransplant · Jun 23 – Jul 7

BeansSow outdoors · Jun 16 – Jun 30

Sweet cornSow outdoors · Jun 16 – Jun 30

Cucumbers, squashSow outdoors · Jun 16 – Jun 30

Fall lettuce, spinachSow outdoors · Jul 24 – Aug 7

GarlicPlant cloves · Sep 4 – Oct 9

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Jun 9) and first fall frost (Sep 18) 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 97634 came on Mar 17 — 19 days earlier than the 1991–2020 average (Apr 5).

average
Apr 52026
Mar 17

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 6b in Oregon

613 plants native to the lower 48 states, recorded in Oregon, and rated by the USDA to survive −5 °F or colder — the bottom of zone 6b. Each links to its USDA PLANTS profile.

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 Midland, OR.

Soil in Midland, OR

The soil mapped at the center of ZIP 97634 is Malin — silt loam, somewhat poorly drained.

TextureSilt loama good balance for most vegetables

pH8.8alkaline; most vegetables like 6.0–7.0

DrainageSomewhat poorly drainedconsider raised beds

Organic matter0.75%low — add compost

Hydrologic groupDwater soaks in very slowly

Farmland classFarmland of statewide importanceUSDA classification

Map unit: Malin variant silt loam.

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 97634; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Midland, OR

Summer high86 °Faverage high, July

Winter low21 °Faverage low, December

Hot days18days a year at 90 °F or more

Freezing nights184nights a year at 32 °F or less

Growing degree days1,747base 50 °F — the season’s usable heat

Longest day15 h 15 mindaylight on June 21

Shortest day9 h 06 mindaylight on December 21

Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)

Precipitation11.1 inper year, rain and melted snow

Average high and low, by month

Precipitation by month inches

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Klamath Falls Intl Airport, OR (4 mi away); precipitation: Klamath Falls Intl Airport, OR (4 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 6b.

976026b

Klamath Falls, OR · 6 mi

976036b

Klamath Falls, OR · 7 mi

Oregon planting zones →

Questions about 97634

What planting zone is ZIP code 97634?

ZIP code 97634 (Midland, OR) 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 Midland, OR?

The median last spring frost (32 °F) near 97634 is June 9; after June 26 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Klamath Falls Intl Airport station.

When is the first frost in Midland, OR?

The median first fall frost near 97634 is September 18, giving a median frost-free growing season of 99 days.

When should I plant tomatoes in 97634?

Start tomato seeds indoors around Apr 14 – Apr 28 and set transplants outside around Jun 16 – Jun 30, one to three weeks after the median last frost.

How much rain and snow does 97634 get?

About 11.1 inches of precipitation a year (NOAA 1991–2020 normals, Klamath Falls Intl Airport station).

How hot do summers get in Midland, OR?

The average high peaks at 86 °F in July, with about 18 days a year at 90 °F or more.

What kind of soil does 97634 have?

The USDA soil survey maps Malin at the center of ZIP 97634: silt loam, somewhat poorly drained, pH about 8.8 (alkaline).

Did spring come early in Midland, OR in 2026?

Spring leaf-out near 97634 came on Mar 17 in 2026, 19 days earlier than the 1991–2020 average (Apr 5), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Midland, OR?

Long-day onions: the longest day near 97634 is 15 h 15 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).