Savanna Trail - Winter at William O'Brien State Park, Minnesota

Month by month

Marine on St. Croix in December

Short days, holiday lights on Judd Street and the start of ski season.

Photo: Tony Webster from Minneapolis, Minnesota, United States / CC BY-SA 2.0, via Wikimedia Commons

28°Faverage high
15°Faverage low
1.51 inprecipitation6 wet days
7.7 insnowfall
8.8 hdaylightsunrise 7:42 AM · sunset 4:29 PM

What December is like

December has the shortest days of the year — under nine hours of daylight — and the snowiest weather of the winter on average. The village glows in the early dark, the river freezes over, and if the snow cooperates the ski trails open before Christmas.

In December, Marine on St. Croix averages a high of 28°F and a low of 15°F. It is the snowiest. Expect about 1.5 in of precipitation (liquid equivalent) and roughly 8 in of snow. Nearly every night freezes, and about 5 nights fall below zero. Days last about 8.8 hours, with roughly 4.8 hours of sunshine.

The river in December

Long-term average flow at St. Croix Falls in December is 2,692 cfs — 40% below the yearly average, with the river mostly under ice — stay off unless conditions are confirmed safe.

Best things to do in December

Based on climate normals and when wildlife is most often recorded, December is a good month for: cross-country skiing.

  • Ski or snowshoe when enough snow has fallen.
  • Walk Judd Street after dark for the holiday lights.
  • Count birds at feeders for the winter season.

What to pack

  • winter coat
  • waterproof boots
  • gloves and a warm hat
  • traction cleats or snowshoes for packed trails

Wildlife to look for in December

Species with a large share of their local iNaturalist records in December. The strip shows each species' records across the year.

Birds

Pileated Woodpecker

Pileated Woodpecker

Dryocopus pileatus

63 local records · peak May

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(c) Joshlaymon, some rights reserved (CC BY-SA)

European Starling

European Starling

Sturnus vulgaris

5 local records · peak December

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(c) Fran Wiesner, some rights reserved (CC BY-NC-ND), uploaded by Fran Wiesner

Pine Siskin

Pine Siskin

Spinus pinus

22 local records · peak May

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(c) Dave Drum, some rights reserved (CC BY-NC), uploaded by Dave Drum

Downy Woodpecker

Downy Woodpecker

Dryobates pubescens

76 local records · peak May

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(c) Matt Hunter, some rights reserved (CC BY-NC-ND), uploaded by Matt Hunter

Plants & wildflowers

eastern white pine

Eastern white pine

Pinus strobus

73 local records · peak May

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(c) Forest and Kim Starr, some rights reserved (CC BY)

quaking aspen

Quaking aspen

Populus tremuloides

23 local records · peak May

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(c) Nathan Perkins, some rights reserved (CC BY-NC), uploaded by Nathan Perkins

eastern redcedar

Eastern redcedar

Juniperus virginiana

33 local records · peak October

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(c) Steven Severinghaus, some rights reserved (CC BY-NC-SA)

black raspberry

Black raspberry

Rubus occidentalis

37 local records · peak June

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(c) raviner, some rights reserved (CC BY-NC)

Mushrooms & fungi

Bloody Beard

Bloody Beard

Usnea mutabilis

2 local records · peak December

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(c) Rob Curtis, some rights reserved (CC BY-NC-SA), uploaded by Rob Curtis

Milk-white Toothed Polypore

Milk-white Toothed Polypore

Irpex lacteus

4 local records · peak December

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(c) Leposava Milosavljevic, some rights reserved (CC BY-NC), uploaded by Leposava Milosavljevic

Eastern speckled shield lichen

Eastern speckled shield lichen

Punctelia bolliana

10 local records · peak December

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(c) Bob O'Kennon, some rights reserved (CC BY-NC), uploaded by Bob O'Kennon

common greenshield lichen

Common greenshield lichen

Flavoparmelia caperata

19 local records · peak April

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(c) John Franklin, some rights reserved (CC BY-NC), uploaded by John Franklin

Insects & butterflies

Western Conifer Seed Bug

Western Conifer Seed Bug

Leptoglossus occidentalis

14 local records · peak September

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(c) Holger Krisp, some rights reserved (CC BY)

Mammals

Coyote

Coyote

Canis latrans

12 local records · peak December

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(c) ryan_krantz, some rights reserved (CC BY-NC)

American Red Squirrel

American Red Squirrel

Tamiasciurus hudsonicus

58 local records · peak June

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(c) jmarcinik, some rights reserved (CC BY-NC), uploaded by jmarcinik

Virginia Opossum

Virginia Opossum

Didelphis virginiana

15 local records · peak August

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(c) Michelle Herman, some rights reserved (CC BY-NC), uploaded by Michelle Herman

Eastern Gray Squirrel

Eastern Gray Squirrel

Sciurus carolinensis

48 local records · peak January

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(c) Diliff, some rights reserved (CC BY-SA)