Connecticut Nature Guide: December 2026
Data updated: August 2026Sources & method · Corrections
December settles Connecticut into winter — the shortest days, the first lasting snow in the hills, and the Sound crowded with wintering ducks. It's Christmas Bird Count season, the woods are bare and quiet, and the long, dark, clear nights make for some of the year's best stargazing.
Week by week in December
December 3–9
- Christmas Bird Count season begins as birders fan out to tally everything from feeder regulars to coastal rarities.
- Long Island Sound is packed with wintering sea ducks — bring a scope to the harbor mouths for goldeneye, scoters, and mergansers.
- Cut Christmas trees, wreaths, and evergreen roping from local tree farms join the storage crops at winter markets and stands.
December 10–16
- The Geminid meteor shower peaks around December 14, the best shower of the year — bright, often colorful meteors visible all night.
- The Connecticut River's wintering bald eagles concentrate below the dams, and a snowy owl may turn up on the coastal dunes.
- Indoors, forced amaryllis and paperwhites and holiday poinsettias carry the bloom while the winter woods glow with berries.
December 17–23
- The winter solstice around December 21 brings the shortest day and longest night, with the brilliant winter constellations owning the sky.
- Young oaks and beeches rattle their tan marcescent leaves in the wind as the bare trees show their winter bark and silhouettes.
- Knock heavy wet snow off evergreens to prevent breakage, but leave dry, fluffy snow as insulation over the dormant beds.
December 24–31
- Winter feeders stay busy with chickadees, cardinals, and woodpeckers, with red-breasted nuthatches and finches in irruption years.
- Orion, the Pleiades, blazing Capella, and the great Winter Hexagon fill the long, dark, clear nights — the year's finest stargazing.
- Cold-stored apples, cider, and the durable storage roots and squash carry the markets through to the turn of the year.
Birds This Month
December is full winter birding, and the start of the Christmas Bird Count season, when birders fan out across the state to tally everything from feeder regulars to rarities. Feeders are busy with black-capped chickadees, tufted titmice, white-breasted nuthatches, downy and hairy woodpeckers, northern cardinals, Carolina wrens, dark-eyed juncos, and white-throated and American tree sparrows, with red-breasted nuthatches and finches in irruption years.
The water holds the season's spectacle. Long Island Sound and the river mouths are packed with wintering waterfowl — scaup, bufflehead, common goldeneye, long-tailed ducks, scoters, mergansers, brant, and Canada geese — and the Connecticut River's wintering bald eagles concentrate below the dams. Watch the coast for loons, grebes, and gulls, the open fields for rough-legged hawks, northern harriers, and short-eared owls, and the dunes for an occasional snowy owl down from the Arctic.
This month's tip: join or follow a local Christmas Bird Count, keep feeders full through the cold snaps, and bring a scope to the shoreline for the winter sea ducks at their peak.
What's Blooming
Nothing blooms outdoors in a Connecticut December — the ground is frozen and the wildflower year is over. The dormant landscape offers structure and persistent color instead: the bright red stems of red-osier dogwood in wet ditches, the scarlet berries of winterberry holly glowing in frozen swamps, the orange of invasive bittersweet draping the hedgerows, and the glossy, cold-curled leaves of mountain laurel and rhododendron in the hill-country woods. The tan, sculptural seed heads of asters, goldenrod, coneflower, and grasses stand through the snow, feeding finches and sparrows.
Indoors and at farm stands, this is the season of forced amaryllis and paperwhites, of holiday poinsettias and Christmas cactus, and of cut evergreen greens, holly, and winterberry gathered into wreaths and arrangements — Connecticut's bloom now lives indoors and in the bright berries of the winter woods.
Garden This Month
December gardening in Connecticut is winter-protection and planning work. With the beds frozen and dormant, the active tasks are defensive: keep mulch in place over perennials and fall plantings to buffer the freeze-thaw cycles that heave roots, water evergreens and broadleaf evergreens like rhododendron deeply before any hard freeze to prevent winter desiccation, and shield young trees and shrubs from deer browse and rabbit damage with guards or fencing as natural food grows scarce.
Knock heavy, wet snow gently off evergreen and arborvitae branches to prevent breakage, but leave dry, fluffy snow as insulation. Otherwise this is the planning season — review what worked, sketch next year's beds, inventory and order seeds before the popular varieties sell out, and clean, sharpen, and oil your tools before storing them. Force a few bulbs or branches indoors to keep something green and growing through the dark of the year.
Zone 6a (Litchfield Hills & northwest): fully dormant under reliable snow, which is your best insulation — leave it banked over beds, knock heavy wet snow off evergreens to prevent breakage, and plan next year's garden from the warmth of the woodstove.
Zone 6b (central valley & inland): the garden is asleep; protect tender shrubs from deer and winter burn, check that mulch is shielding fall plantings, and use the quiet weeks to inventory seeds and order for spring.
Zone 7a (shoreline): the mildest corner of the state still freezes — finish mulching, water evergreens before any hard freeze, guard against deer browse, and start planning and seed-ordering for the early coastal spring ahead.
What's at the Farmers Market
December markets blend the storage harvest with the holidays. Indoor winter markets and farm stands carry the durable, cured crops: winter squash, potatoes, sweet potatoes, onions, garlic, leeks, carrots, beets, parsnips, turnips, rutabagas, and cabbage, plus frost-sweetened Brussels sprouts, kale, and hardy greens, and overwintered spinach from the hoop houses. Cold-stored Connecticut apples and fresh cider are still going strong.
The season's specialties take over the tables: cut Christmas trees, wreaths, roping, and evergreen greens from local tree farms, holiday poinsettias and forced bulbs, cranberries, honey, maple syrup, farmstead cheeses, eggs, and the last preserves of the year. Store roots cool and humid, squash and onions cool and dry, and apples cold and apart from other produce. Keep cut greens and trees in water in the cold to hold their needles and color through the holidays.
Night Sky This Month
December brings the winter solstice around December 21, the shortest day and longest night of the year, and the cold, dry air delivers some of the finest stargazing. The brilliant winter sky owns the evening: Orion climbs the southeast with the Pleiades and orange Aldebaran in Taurus above, blazing Capella overhead, and the bright pair of Gemini and the Winter Hexagon filling the sky as the night deepens.
The Geminid meteor shower peaks around December 14 and is the best shower of the year — slow, bright, often colorful meteors radiating from Gemini, visible all night and at high rates from a dark site. Bundle up against the cold and head for the open hills of Litchfield County or the dark eastern Connecticut woods, away from the coastal glow, give your eyes time to adjust, and the longest nights of the year reward you richly.
Exact planet positions and this year's Geminid viewing conditions shift year to year — the printable Connecticut night-sky guide gives the dates and visibility for your part of the state.
Butterflies & Pollinators
There are no butterflies on the wing in a Connecticut December — it is far too cold, and snow lies over much of the state. The summer's butterflies are passing the winter in hidden, dormant forms scattered through the frozen landscape: the migratory monarchs are clustered by the millions in the oyamel fir forests of central Mexico, while Connecticut's own species wait out the cold here at home. Mourning cloaks, eastern commas, and question marks hibernate as adults, tucked behind loose bark and in woodpiles, their natural antifreeze letting them survive deep freezes and emerge on the first warm days of late winter.
The swallowtails wait as chrysalises hidden in the leaf litter and on stems, the fritillaries as tiny newly hatched caterpillars sheltering in the duff, and others as eggs glued to twigs. This is the season to plan next year's butterfly garden — native milkweed for monarchs and a long succession of native nectar plants — and to leave the leaf litter and standing stems that shelter all these dormant lives through the winter.
What to plant for them is in the Connecticut native plants guide
Trees This Month
December's Connecticut forest stands bare and dormant, and the evergreens carry the winter. Eastern white pine — the great soft-needled pine of the region — along with eastern hemlock in the shaded ravines and old-field eastern red cedar hold the only green in a gray-and-white landscape, and they take center stage as the source of holiday greens, wreaths, and Christmas trees from local tree farms, joined by planted balsam and Fraser firs and spruces.
The deciduous trees reveal their winter identities in bark and silhouette: the broad, pale-barked crown of the state tree, the white oak; the smooth gray trunks of American beech still clutching their tan leaves; the shaggy peeling strips of shagbark hickory; and the mottled white camouflage bark of sycamore along the rivers. Young oaks and beeches rattle their marcescent leaves in the wind, and the bright winterberry and the buds set for spring promise the year's renewal to come.
The Connecticut native plants guide covers what grows with them
Weather & Daylight
Across Connecticut, a typical December day averages a high near 41°F and a low near 24°F, with about 4.4 inches of precipitation — statewide averages from the 1991–2020 U.S. climate normals.
Deep winter chill returns, highs around 41F and lows near 24F, with heavy precipitation often falling as sleet or snow.
| Average high | 41°F |
|---|---|
| Average low | 24°F |
| Precipitation | 4.4 in |
| Sunrise (mid-month) | 7:11 ET |
| Sunset (mid-month) | 16:22 ET |
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 (ET).
Next month's version of this page, by email
One short note when Connecticut's next month turns — what's arriving, blooming, and worth a night outside.
Go deeper with the Connecticut guides
The complete Connecticut birding, native-plant, and night-sky references — or the whole year, week by week, in one book.
Same month elsewhere: December in Delaware · December in Washington, D.C. · December in Florida