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

Planting zone for 97336 — Crawfordsville, OR

ZIP code 97336 (Crawfordsville, Linn County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is April 12 and the first fall frost October 28.

Where ZIP 97336 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.

Zone8b15 to 20 °F
Coldest night−9.4 to −6.7 °C
Last frostApr 12
First frostOct 28
2012 zone8b

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 8b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Crawfordsville, 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 Crawfordsville, OR

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 12median — 50% chance of a later frost
Safe for tender plantsMay 5only 10% chance of frost after
First fall frostOctober 28median — 10% chance by Oct 5
Growing season197 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 9 and returns around November 18.

From the NOAA station Foster Dam, OR — 10 miles away, elevation 551 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 97336

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 1 – Mar 15
SpinachSow outdoors · Mar 1 – Mar 22
Broccoli, cabbageStart indoors · Feb 1 – Feb 15
Broccoli, cabbageTransplant · Mar 22 – Apr 5
Onion setsPlant outdoors · Mar 15 – Mar 29
PotatoesPlant outdoors · Mar 22 – Apr 5
LettuceSow outdoors · Mar 15 – Mar 29
Carrots, beetsSow outdoors · Mar 22 – Apr 5
TomatoesStart indoors · Feb 15 – Mar 1
TomatoesTransplant · Apr 19 – May 3
Peppers, eggplantStart indoors · Feb 1 – Feb 15
Peppers, eggplantTransplant · Apr 26 – May 10
BeansSow outdoors · Apr 19 – May 3
Sweet cornSow outdoors · Apr 19 – May 3
Cucumbers, squashSow outdoors · Apr 19 – May 3
Fall lettuce, spinachSow outdoors · Sep 2 – Sep 16
GarlicPlant cloves · Oct 14 – Nov 18
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 12) and first fall frost (Oct 28) 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 97336 came on Feb 22 — about the same time as the 1991–2020 average (Feb 20).

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 Crawfordsville, OR

The soil mapped at the center of ZIP 97336 is Malabon — silty clay loam, well drained.

TextureSilty clay loamholds water and nutrients; slow to drain and warm up
pH6.1slightly acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter5%high
Hydrologic groupCwater soaks in slowly
Farmland classprime farmlandUSDA classification

Map unit: Malabon silty clay 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 97336; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Crawfordsville, OR

Summer high83 °Faverage high, August
Winter low34 °Faverage low, January
Hot days17days a year at 90 °F or more
Freezing nights55nights a year at 32 °F or less
Growing degree days2,111base 50 °F — the season’s usable heat
Longest day15 h 32 mindaylight on June 21
Shortest day8 h 50 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation50 inper year, rain and melted snow
Snowfall1 inper year; 1 days with snow on the ground

Average high and low, by month

20°30°40°50°60°70°80°90°32 °FJanuary: average high 48 °F, low 34 °F 48°34° JanFebruary: average high 51 °F, low 35 °F 51°35° FebMarch: average high 56 °F, low 37 °F 56°37° MarApril: average high 60 °F, low 40 °F 60°40° AprMay: average high 67 °F, low 44 °F 67°44° MayJune: average high 73 °F, low 48 °F 73°48° JunJuly: average high 82 °F, low 51 °F 82°51° JulAugust: average high 83 °F, low 50 °F 83°50° AugSeptember: average high 76 °F, low 47 °F 76°47° SepOctober: average high 64 °F, low 42 °F 64°42° OctNovember: average high 53 °F, low 38 °F 53°38° NovDecember: average high 47 °F, low 34 °F 47°34° Dec

Precipitation by month inches · ❄ = snowfall

0″2″4″6″8″January: 6.93 in precipitation, 0.1 in snowfall 6.9 JanFebruary: 5.43 in precipitation, 1 in snowfall 5.4❄1 FebMarch: 5.91 in precipitation 5.9 MarApril: 4.58 in precipitation 4.6 AprMay: 3.11 in precipitation 3.1 MayJune: 2.00 in precipitation 2.0 JunJuly: 0.42 in precipitation 0.4 JulAugust: 0.54 in precipitation 0.5 AugSeptember: 1.61 in precipitation 1.6 SepOctober: 4.16 in precipitation 4.2 OctNovember: 7.10 in precipitation 7.1 NovDecember: 8.26 in precipitation, 0.1 in snowfall 8.3 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Foster Dam, OR (10 mi away); precipitation: Holley, OR (3 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 8b.

973278b
Brownsville, OR · 5 mi
973868b
Sweet Home, OR · 6 mi
974548b
Marcola, OR · 10 mi
974468b
Harrisburg, OR · 12 mi
973558b
Lebanon, OR · 12 mi
973488b
Halsey, OR · 14 mi
973458b
Foster, OR · 14 mi
973778b
Shedd, OR · 15 mi

Oregon planting zones →

Questions about 97336

What planting zone is ZIP code 97336?

ZIP code 97336 (Crawfordsville, OR) is in USDA hardiness zone 8b on the 2023 map: the coldest night of an average winter reaches 15 to 20 °F (−9.4 to −6.7 °C).

When is the last frost in Crawfordsville, OR?

The median last spring frost (32 °F) near 97336 is April 12; after May 5 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Foster Dam station.

When is the first frost in Crawfordsville, OR?

The median first fall frost near 97336 is October 28, giving a median frost-free growing season of 197 days.

When should I plant tomatoes in 97336?

Start tomato seeds indoors around Feb 15 – Mar 1 and set transplants outside around Apr 19 – May 3, one to three weeks after the median last frost.

How much rain and snow does 97336 get?

About 50 inches of precipitation a year and 1 inches of snowfall (NOAA 1991–2020 normals, Holley station).

How hot do summers get in Crawfordsville, OR?

The average high peaks at 83 °F in August, with about 17 days a year at 90 °F or more.

What kind of soil does 97336 have?

The USDA soil survey maps Malabon at the center of ZIP 97336: silty clay loam, well drained, pH about 6.1 (slightly acidic).

Did spring come early in Crawfordsville, OR in 2026?

Spring leaf-out near 97336 came on Feb 22 in 2026, about the same as the 1991–2020 average (Feb 20), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Crawfordsville, OR?

Long-day onions: the longest day near 97336 is 15 h 32 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).