Through Jan. 6:
House on the Rock Christmas, Spring Green, (608) 935-3639, www.thehouseontherock.com

Dec. 14-16: "The Spirit of Christmas Past," Heritage Hill State Park in Green Bay, (920) 448-5150 or (800) 721-5150.

Dec. 15-16: Silent Sports Demo, Winter Park, Minocqua, (715) 356-3309 or www.skimp.org.

Dec. 21: Winter Solstice, the shortest day of the year.

-- Night hike, Kettle Moraine State Forest - Northern Unit in Campbellsport, (920) 533-8322, 7 to 8:30 p.m.

-- "Forever Green" storytime for 3-6-year-olds at Ice Age Visitor Center, 9:30 to 10:30 a.m.

Jan. 1: Polar bear plunge, noon on Lake Michigan in Jacksonport, (920) 823-2231, 1 p.m. in Sheboygan, (715) 339-3927 or visit www.bogiespromotions.com, and 1 p.m. in Phillips’ Long Lake, (715) 339-3927.

Jan. 5: Candlelight ski, Mirror Lake State Park in Baraboo, (608) 254-2333, 6 to 9 p.m.

-- Polar Bear Jump, St. Germain, (800) 727-7203.

Jan. 12: Timber wolf winter tracking clinic, 9 a.m. to 4 p.m., Sandhill Outdoor Skills Center in Babcock, (715) 884-2437, $25 fee, register by Jan. 3.

Jan. 13-20: World Championship Snowmobile Derby, Eagle River, (715) 479-4424 or (800) 359-6315, www.derbytrack.com

Jan. 18-20: Snowshoe weaving course, Treehaven in Tomahawk, (715) 453-4106.

Jan. 19: 10^th annual Perkinstown Tramp Snowshoe Races, Perkinstown, (888) 682-9567.

-- Winter mammal tracking clinic, Sandhill Outdoor Skills Center, Babcock, (715) 884-2437, $10 fee,. register by Jan. 9.

Jan. 19-21: Flake-Out Festival, Noah’s Ark Waterpark, Wisconsin Dells, (800) 223-3557, www.wisdells.com

-- Bald Eagle Watching Days, Sauk Prairie, (800) 68-EAGLE, www.saukprairie.com.

Jan. 20: Fisharee, 7 a.m. to 3 p.m , Mirror Lake State Park, Lake Delton, (608) 254-2333.

Jan. 23-27: United States International Snow-Sculpting Competition, Wisconsin State Fair Park, West Allis, (414) 476-5573.

Jan. 25: Snowshoe hike, Chippewa Moraine Ice Age State Recreation Area , New Auburn, (715) 967-2800 - Call ahead to reserve snowshoes. Lesson at 6:30 p.m., hike at 7 p.m.

Jan. 25-27: Wolf study, Treehaven, Tomahawk, (715) 453-4106.

Jan. 26: Candlelight ski and walk, Lake Wissota State Park, Chippewa Falls, (715) 382-4574, 6 to 9 p.m.

-- Snowshoeing clinic at the Sandhill Outdoor Skills Center in Babcock, (715) 884-2437, $10 Register by Jan. 16, 9 a.m. to 2 p.m.

Jan. 26-27: Nicolet Sled Dog Sprints, Camp Nicolet, 12 miles east of Eagle River on Hwy. 70, (800) 359-6315.

-- Snowflake International Ski Jumping Tournament ,Westby, (608) 634-3211.

-- Silvermine Invitational Ski Jumping Tournament, Eau Claire, (715) 832-2128.

Jan. 30 to Feb. 3: Winterfest, Lake Geneva, (800) 345-1020, www.lakegenevawi.com

First week of Feb.: Winterfest, Hayward, (715) 634-2102 or www.winterfest.net

Feb. 2: Timber wolf tracking clinic, 9 a.m. to 4 p.m., Sandhill Outdoor Skills Center, Babcock, (715) 884-2437, $25 Register by Jan. 23.

-- Christmas Mountain Village Winter Carnival, Wisconsin Dells, (608) 253-1000.

Feb. 1-3: Badger State Winter Games, Wausau and other cities, (888) 948-4748 or (608) 226-4780, www.sportsinwisconsin.org

-- Hot Air Affair, Hudson, (888) 657-6775 or www.hudsonhotairaffair.com

Feb. 2: Candlelight ski, Mirror Lake State Park, 6-9 p.m., Baraboo, (608) 254-2333.

-- Groundhog Day, Sun Prairie, 7:10 a.m. reading, (608) 837-4547 or (800) 400-6162.

-- Snieg Fest and Ethnic Celebration, Gilman, (888) 682-9567.

Feb. 2-3: Kites on Ice, Monona Terrace Convention Center, Madison, (608) 278-9666 or www.madfest.org.

Feb. 9: Ice Tee Classic outdoor mini-golf tournament, Lake Wausau, Wausau, (715) 845-1966.

-- Ice fishing contest, Spirit Lake and North Spirit Lake, Taylor County, (888) 682-9567.

-- Sturgeon spearing season opens on Lake Winnebago, (877) 945-4236.

-- Lion’s Winter Fun Day Stump Dump Pageant and Dance, St. Germain, (800) 727-7203 or www.st-germain.com

-- Wolf ecology class on snowshoes, Treehaven, Tomahawk, (715) 453-4106.

Feb. 9-10: Winter camping, Sandhill Outdoor Skills Center, Babcock (715) 884-2437, must be 16 or older, $55 fee includes four meals. Register by Jan. 30.

Feb. 16: Porcupine ecology on snowshoes, 9 a.m. to 2 p.m., Sandhill Outdoor Skills Center , Babcock (715) 884-2437, snowshoes provided, $10 fee. Register by Feb. 6

Feb. 16-17: Klondike Days, Eagle River, (800) 359-6315 or www.eagleriver.org

Feb. 19: Hinder Binder Cross-Country Ski Race, Rib Lake Ice Age Trails, Taylor County, (888) 682-9567.

Feb. 22-24: Snowshoe weaving, Treehaven, Tomahawk, (715) 453-4106.

-- Wolf study,Treehaven, Tomahawk, (715) 453-4106.

Feb. 23: Night snowshoe hike, Chippewa Moraine Ice Age State Recreation Area, New Auburn, (715) 967-2800. Snowshoe lesson at 6:30 p.m., hike at 7 p.m.

-- Birkebeiner cross-country ski 51-kilometer marathon, Cable to Hayward, (715) 634-5025, www.birkie.org

Feb. 24: Ice fishing contest, Chelsea Lake, Taylor County, (888) 682-9567.

March 1-3: Winter Weenie Weekend, Lakewoods Resort, Lake Namakagon near Cable, (800) 255-5937 or (715) 794-2561 or www.lakewoodsresort.com