October paints Utah's canyons gold and crimson as the cottonwoods and maples turn, the waterfowl return in force to the Great Salt Lake wetlands, and the apple and pumpkin harvest fills the markets. The first mountain snows dust the high peaks while the red-rock country enters its finest, coolest hiking season.
Week by week in October
October 1–7
- Fremont cottonwoods glow brilliant gold along the rivers, the golden canopy against Zion and Capitol Reef's red sandstone a signature Utah autumn scene.
- Tundra swans arrive at Bear River and Farmington Bay, building toward their spectacular late-fall peak.
- The apple harvest peaks at the bench orchards with the last pears and grapes from the warmer benches.
October 8–14
- Bigtooth maple flames red and orange and Gambel oak turns deep bronze on the foothills at peak mid-elevation fall color.
- Sparrows surge through the brushy edges and dark-eyed juncos return to the feeders down from the mountains.
- After the frost, pull spent plants, finish planting garlic and bulbs, and give evergreens and young trees a deep final watering.
October 15–21
- The Great Salt Lake marshes fill with wintering ducks — gadwall, wigeon, redhead, and canvasback — as the first wintering bald eagles arrive.
- The Orionid meteor shower, debris from Halley's Comet, peaks in the late-October pre-dawn over the dark red-rock parks.
- Storage onions, potatoes, and winter squash fill the stalls as the outdoor markets wind toward their close.
October 22–28
- The cottonwoods drop their final gold along the canyons and irrigation ditches as the high spruce-fir stands dark over the first mountain snows.
- Townsend's solitaires move down to defend juniper-berry territories and rough-legged hawks arrive over the foothills for winter.
- Only the hardiest painted ladies and sulphurs still work the last rabbitbrush bloom on the warmest afternoons.
Birds This Month
October is waterfowl-return season on Utah's wetlands. The Great Salt Lake marshes fill with migrating and wintering ducks — northern pintail, green-winged teal, northern shoveler, gadwall, American wigeon, redhead, and canvasback — and the first big flocks of tundra swans arrive at Bear River and Farmington Bay, building toward their spectacular late-fall peak. Snow geese and Canada geese stage on the flooded fields.
Songbird migration tapers, but sparrows surge: white-crowned, golden-crowned, white-throated, Lincoln's, and fox sparrows work the brushy edges, and dark-eyed juncos return to the feeders from the mountains. The late raptor flight brings golden eagles, rough-legged hawks, and bald eagles arriving for winter. Townsend's solitaires move down to defend juniper-berry territories, mountain bluebirds flock over the foothills, and the canyon parks quiet as the desert breeders depart, leaving wintering Townsend's and black-throated gray warblers trickling through.
What's Blooming
October's bloom in Utah fades to the last hardy survivors. The valleys and foothills still hold lingering rabbitbrush gold early in the month, fading asters, broom snakeweed, and the dried seed heads of summer's wildflowers curing tawny on the cured grasslands. The high country has gone to frost and seed, the meadows brown and the alpine flowers finished.
In the canyon country, a few late desert four o'clock, globemallow, and broom snakeweed may persist on warmer benches, and the cooling weather keeps the red-rock washes pleasant. Gardens hold the season's last color in frost-hardy chrysanthemums, asters, pansies, and ornamental kale until a hard freeze. The true spectacle now is not flowers but foliage — the golden cottonwoods and red maples that light the canyons. The sego lily and the summer wildflowers are long gone, their seed set for next spring.
Garden This Month
October is cleanup, harvest, and winter-prep across most of the Utah garden. On the Wasatch Front, the first frosts end the tender crops, so harvest the last winter squash, pumpkins, root vegetables, and any green tomatoes, and pull and compost the spent plants. Finish planting garlic and spring-flowering bulbs, and set out the last hardy greens under cover. Cure the harvested squash, onions, and potatoes in the dry air for winter storage.
Prepare for the cold: mulch perennials, strawberries, and garlic against the freeze-thaw heaving Utah's clear nights cause, give evergreens and young trees a deep final watering, and drain and blow out the irrigation lines before a hard freeze cracks them. Spread compost and plant a cover crop on empty beds to protect the soil. In St. George this is one of the best planting months of the year as the desert cools and a full cool-season garden goes in; in the high Uinta Basin and mountain valleys, the garden season is over and the work is final cleanup and protection before deep winter. Rake and shred fallen leaves for next year's mulch and compost.
Zone 5b (Wasatch Front benches): after the frost, pull spent plants, harvest the last winter squash and root crops, and finish planting garlic and bulbs. Mulch perennials and overwintering crops, and drain irrigation before freeze.
Zone 6b (warmer valley floors): harvest the last warm-season crops and the cool-season greens, plant garlic early in the month, and sow a cover crop or mulch the beds for winter.
Zone 8a (St. George): the prime cool-season window is open — sow spinach, lettuce, peas, carrots, and brassicas, and plant garlic and cool-season flowers as the desert finally cools.
What's at the Farmers Market
October markets in Utah are the harvest's grand finale, anchored by apples and pumpkins. The apple harvest peaks — many varieties from the Wasatch Front and Box Elder bench orchards — alongside the last peaches and pears, and abundant winter squash and pumpkins for storage and decoration. Grapes from the warmer benches round out the fruit.
The vegetable stalls hold the storage harvest: onions, potatoes, carrots, beets, winter squash, cabbage, and the cool-season kale, spinach, and broccoli. New-crop honey is plentiful from the season's bloom. Farm eggs, dried beans, milled grains, and grass-fed meats fill out the tables, and cider, corn mazes, and pumpkin patches mark the harvest-festival season. The big outdoor markets wind toward their close late in the month, and the winter indoor markets begin to take their place on the Wasatch Front.
Night Sky This Month
October's long, crisp nights and dry autumn air make for superb stargazing at Utah's dark parks before the cold sets in. Bryce Canyon, Capitol Reef, Canyonlands, Arches, Natural Bridges, and Dead Horse Point offer pristine fall skies, and the red-rock country's comfortable daytime hiking weather pairs with crystalline nights. Near the Wasatch Front, Antelope Island State Park and the Stansbury Park Observatory give accessible viewing as the valley air clears.
The autumn sky is up: the Great Square of Pegasus rides high in the south, leading Andromeda with its naked-eye galaxy, Pisces, and Cetus, while the Summer Triangle sinks in the west and brilliant Capella and the Pleiades rise in the east as winter's heralds. The Orionid meteor shower, debris from Halley's Comet, peaks in the late-October pre-dawn hours, radiating from near Orion. Plan for a dark, moonless window over a canyon horizon; the printable Utah night-sky guide lists this year's planet positions and the best dark-sky dates.
Butterflies & Pollinators
October winds Utah's butterfly season down to its hardy last flyers. On warm afternoons, painted ladies, orange sulphurs, and cabbage whites still work the lingering rabbitbrush and aster bloom in the valleys and foothills, and a few fritillaries and checkerspots persist. The last southbound monarchs have largely passed through toward coastal California. In the warm St. George desert, the season runs longer, with desert sulphurs and ladies on the wing into the month.
The species that overwinter as adults — mourning cloaks, California and other tortoiseshells, and the angled commas — feed up and seek shelter under cottonwood bark, in woodpiles, and in canyon crevices to hibernate. The high mountains have frozen and gone still. This is the time to leave brush piles, leaf litter, and standing seed heads undisturbed through winter, since they shelter the hibernators and the eggs and chrysalids that will produce next spring's first butterflies. By month's end most of Utah is quiet but for a rare warm-day mourning cloak.
Trees This Month
October is peak fall color across Utah's mid and lower elevations. After the high aspen turn, the foothills and canyons flame: bigtooth maple blazes red and orange, Gambel oak turns deep bronze and russet on the benches, and the Fremont cottonwoods along the rivers and irrigation ditches glow brilliant gold, lighting the red-rock canyons of Zion, Capitol Reef, and the Wasatch streams. The combination of golden cottonwood against red sandstone is a signature Utah autumn scene.
The native boxelder, chokecherry, and willows yellow along the creeks, and the orchards finish their apple harvest as their leaves color. The high spruce-fir forest stands dark green over the first mountain snows, the late aspen gold now fallen on the upper slopes. The plateau pinyon-juniper holds steady evergreen, and the desert woodland of the southwest cools at last. By month's end the cottonwoods drop their leaves and the canyons begin to bare for winter.
Weather & Daylight
Across Utah, a typical October day averages a high near 63°F and a low near 36°F, with about 1.3 inches of precipitation — statewide averages from the 1991–2020 U.S. climate normals.
Crisp autumn settles in, highs near 63F feel brisk and golden, with nights near 36F turning distinctly cold and clear.
| Average high | 63°F |
|---|---|
| Average low | 36°F |
| Precipitation | 1.3 in |
| Sunrise (mid-month) | 7:37 MT |
| Sunset (mid-month) | 18:49 MT |
Figures are statewide averages over the 1991–2020 U.S. climate normals; local conditions vary with elevation and distance from the coast. Sunrise and sunset are computed for a midstate point on the 15th (MT).
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Same month elsewhere: October in Vermont · October in Virginia · October in Washington