1. The Waltham Recreation Department is hosting a Lego building session at 2 p.m. at 510 Moody St.
2. Joe Sent Me will hold its weekly trivia night at 7:30 p.m.
3. The Waltham Public Library will host a "Mother Goose on the Loose" program at 9:30 a.m. featuring interactive stories for children.
4. Forecasters are predicting snow today. Bundle up and be careful on the roads. Check back at Waltham Patch for updates.
5. Waltham High School' s boys' varsity hockey team will face Westford Academy at 7 p.m. in a home game.