Oregon Nature Guide: October 2026
October is deep autumn — the rains return to the wet west, the larches and bigleaf maples turn gold, salmon run up the coastal rivers, and the hazelnut harvest fills the Willamette Valley. Wintering waterfowl begin returning to the refuges.
What to look for this week
- The Klamath Basin is at peak — thousands of wintering Bald Eagles hunt the rafts of snow geese, pintail, and tundra swans on Lower Klamath and Tule Lake.
- The Quadrantid meteor shower peaks in a short sharp burst around January 3; watch the northeast after midnight from a dark site like the Oregon Outback near Lakeview.
- Dungeness crab season is in full swing on the coast — fresh-cooked crab from Newport and Garibaldi is sweet, full, and at its best value now.
- In the mild Willamette Valley, prune dormant apples and pears and plant bare-root fruit on a dry window between the rains.
Birds This Month
October is the great return of Oregon's wintering birds. The first big flocks of cackling and dusky Canada geese, white-fronted geese, northern pintail, wigeon, and tundra swans pour back into the Willamette Valley refuges — Finley, Ankeny, Baskett Slough, and Sauvie Island — and into the Klamath Basin. Sandhill cranes stage in big numbers, and the first wintering Bald Eagles arrive in the Klamath country.
On the coast, fall migration finishes with late shorebirds, building rafts of scoters and loons offshore, and the first brant returning to the bays. Varied thrushes move down from the mountains into the valley woods, golden-crowned and white-crowned sparrows fill the brushy edges, and yellow-rumped warblers and kinglets work the foliage. Watch for irruptive pine siskins and red crossbills. Sooty grouse have moved upslope to winter in the conifers.
What's Blooming
October's bloom fades to the last hardy flowers of Oregon's autumn. East of the Cascades, the gold rabbitbrush finishes its long display across the sage steppe, the final flush of color before winter. In the valley and on the coast, the mild maritime climate keeps a few flowers going — late asters, gumweed, tansy, and roadside yarrow — and the first rains green the dry hills with new grass and the rosettes of next spring's wildflowers.
Gardens hold their last dahlias, asters, chrysanthemums, and Japanese anemones until the first hard frost, and the fall-blooming colchicum and cyclamen hederifolium carpet shaded beds. The native witch hazel begins to color, and the woodland fungi take over the show — Oregon's famous fall mushroom flush, the chanterelles and boletes pushing up through the wet forest duff. The wildflower season is closing, but the rains promise the green of next spring.
Garden This Month
October is the close-out and overwintering month for the Oregon garden. In the mild west, plant garlic and shallots for next summer, finish setting out overwintering brassicas and onions, and sow cover crops — crimson clover, fava, and grains — on every emptying bed to protect the soil through the rainy winter. Plant spring-flowering bulbs and bare-root garlic.
Harvest the last winter squash, apples, and root crops, and bring in or cover any remaining tender plants before the first valley frost. Rake and compost leaves, clean up spent crops to reduce overwintering pests and disease, and mulch tender perennials. Drain hoses before freezes. East of the Cascades, the high-desert garden shuts down under hard frosts — clean up, mulch the garlic heavily, drain the irrigation, and store the squash, onions, and potatoes for the long Bend winter.
Zone 6b (Bend & high desert): the garden shuts down as hard freezes arrive. Clean up beds, mulch the garlic deeply, drain irrigation, and store the harvest; the long high-desert winter is beginning.
Zone 8a (Willamette Valley): finish planting garlic and overwintering crops, sow cover crops on bare beds, and plant spring bulbs and bare-root garlic. Mulch tender perennials and bring in the last winter squash before the rains rot it.
Zone 8b (southwest valleys & coast): the long mild fall keeps the winter garden growing; transplant the last brassicas, sow hardy greens, and plant bulbs. The frost-free coast harvests greens all winter.
What's at the Farmers Market
October is harvest-festival season at Oregon markets. The signature event is the hazelnut harvest — the Willamette Valley grows nearly the entire U.S. crop, and the fresh in-shell nuts arrive now. The fall fruit peaks: Hood River and Gorge pears (Anjou, Bosc, Comice) and apples of every variety, plus the last grapes, fresh cider, and Italian prune plums.
The vegetable stands shift to autumn: winter squash, pumpkins, potatoes, onions, leeks, Brussels sprouts, cabbage, and hardy greens. Wild chanterelles and other foraged mushrooms reach the stalls from the wet Coast Range forests. Choose in-shell hazelnuts that feel heavy and don't rattle, and store shelled nuts cold to protect their oils; buy pears firm to ripen at room temperature, and pick squash with hard rinds and intact stems for storage. A bountiful harvest-month at the markets.
Night Sky This Month
October's lengthening nights are excellent for stargazing on the clear windows between the returning western rains, and the eastern high desert stays drier and darker. The Oregon Outback International Dark Sky Sanctuary near Lakeview and Prineville Reservoir State Park offer pristine autumn skies, and Pine Mountain Observatory near Bend runs late-season programs as weather allows. The high desert around the Steens is at its crisp, transparent best.
The autumn sky is on display: the Great Square of Pegasus rides high, the Andromeda Galaxy (M31) sits near the zenith in dark skies, and the Double Cluster in Perseus follows, with brilliant Capella and the first winter stars rising in the northeast late at night. The summer Milky Way still arches through Cygnus after dusk. The Orionid meteor shower, debris of Halley's Comet, peaks in late October, best after midnight in the southeast. The printable Oregon night-sky guide gives this year's planet positions and the best Orionid dates.
Butterflies & Pollinators
October's cooling, wetting weather sends most of Oregon's butterflies into dormancy, but warm sunny days still bring a few out west of the Cascades. California tortoiseshells, mourning cloaks, and the angled commas that overwinter as adults fly on mild afternoons in the valley and foothills before tucking into bark crevices, woodpiles, and outbuildings to hibernate. Late red admirals, painted ladies, and cabbage whites linger at the last asters.
The final Oregon monarchs are reaching the California coastal overwintering groves now, closing the small western migration for the year. East of the Cascades, the season is essentially over as frost grips the high desert, though a tortoiseshell may appear on a warm canyon slope. This is the time to leave the garden's seed heads, leaf litter, and standing stems undisturbed — they shelter the overwintering chrysalids and hibernating adults that will reappear with the first warm days of late winter.
Trees This Month
October is Oregon's peak fall color, especially in the high country and east. The western larch of the eastside and Cascade forests turns its famous gold — a deciduous conifer that lights whole mountainsides around the Wallowas and Blue Mountains before dropping its needles. The quaking aspen and streamside cottonwoods glow yellow in the high desert, and the Cascade vine maples flame red and orange through the forest.
In the valley, the bigleaf maples turn deep gold along the streams, the Oregon ash yellows in the wet bottoms, and the Oregon white oak shifts to rusty brown on the savanna. The introduced street trees — sweetgum, red maple, and ginkgo — color the towns. The state tree, Douglas-fir, and the evergreen Pacific madrone hold their green as the returning rains revive the moss and ferns. Salmon run up the coastal rivers beneath the coloring alders.
Go deeper with the Oregon guides
The complete Oregon birding, native-plant, wildflower, and night-sky guides — or the whole year in one bundle.
Same month elsewhere: October in Pennsylvania · October in Rhode Island · October in South Carolina