Forest Preserves of Cook County 2025 Winter Brochure

37 Science of Snow Sunday, Dec 21 • 1–3 pm Crabtree Nature Center Northwest Zone Hibernation Day Saturday, Dec 6 • 1–3 pm Bemis Woods-South Central Zone DIY Weather Station Wednesday, Jan 21 • 10 am–Noon Bemis Woods-South Central Zone Winter is Coming Walk * Saturday, Dec 13 • 1:30 pm Trailside Museum of Nature History Central Zone Extreme Winter Weather ** Saturday, Feb 7 • 1 pm Sagawau Environmental Learning Center Southwest Zone * Registration required. Call 708.366.6530. ** Will only run if we do not have snow.