December 2025

Fri 12

Friday Afternoon Concert: Flatirons Jazz Orchestra

Friday, Dec. 12, 2025 · 2:30 pm - 4:30 pm

Longmont Museum 400 Quail Rd., Longmont, CO, United States

Join us as we go back in time and enjoy a swinging afternoon with this traditional 18-piece big band.

Fri 12

All Out League (12/12/2025)

Friday, Dec. 12, 2025 · 4 pm - 5 pm All Out League Series

Longmont Youth Center 1050 Lashley St., Longmont, CO, United States

Fri 12

Longmont Lights Holiday Festival

Friday, Dec. 12, 2025 · 5 pm - 8 pm

Roosevelt Park 700 Longs Peak Ave., Longmont, CO, United States

Sat 13

Friends of the Longmont Library (FOLL) Book Sale

Saturday, Dec. 13, 2025 · 9 am - 5 pm

Longmont Public Library 355 Emery St., Longmont, CO, United States

Sat 13

Discovery Days Art (12/13/2025)

Saturday, Dec. 13, 2025 · 9:15 am - 2:15 pm Discovery Days Art Series

Longmont Museum 400 Quail Rd., Longmont, CO, United States

Sat 13

Ornaments & Keepsakes Big-Kids Day at Discovery Days

Saturday, Dec. 13, 2025 · 9:15 am - 2:15 pm

Longmont Museum 400 Quail Rd., Longmont, CO, United States

Sat 13

English Conversation Group (12/13/2025)

Saturday, Dec. 13, 2025 · 10:30 am - 11:30 am English Conversation Group Series

Longmont Public Library 355 Emery St., Longmont, CO, United States

Practice English conversation with others in an informal, conversational setting. Some English experience suggested, but all welcome.

Sat 13

Longmont Lights Holiday Parade

Saturday, Dec. 13, 2025 · 5 pm - 7 pm

Roosevelt Park 700 Longs Peak Ave., Longmont, CO, United States

Sun 14

Dogs Enjoy Afternoon Reading (D.E.A.R.)

Sunday, Dec. 14, 2025 · 2 pm - 3 pm

Longmont Public Library 355 Emery St., Longmont, CO, United States

Mon 15

Youth Basketball League Registration Deadline

Monday, Dec. 15, 2025

Recreation Center 310 Quail Rd., Longmont, CO, United States

Mon 15

CANCELLED Water Advisory Board

Monday, Dec. 15, 2025 · 3 pm - 5 pm Water Advisory Board Series

Mon 15

Mythical Creatures Club: Kitsunes

Monday, Dec. 15, 2025 · 4 pm - 5 pm

Longmont Public Library 355 Emery St., Longmont, CO, United States

Mon 15

Navigators (12/15/2025)

Monday, Dec. 15, 2025 · 4 pm - 5:30 pm Navigators Series

Longmont Youth Center 1050 Lashley St., Longmont, CO, United States

Mon 15

Drop-in Writers Group (12/15/2025)

Monday, Dec. 15, 2025 · 6 pm - 7:30 pm Drop-in Writers Group / Grupo de Escritores Abierto Series

Longmont Public Library 355 Emery St., Longmont, CO, United States

Mon 15

Drop-in Writers Group (12/15/2025)

Monday, Dec. 15, 2025 · 6 pm - 7:30 pm Drop-in Writers Group / Grupo de Escritores Abierto Series

Longmont Public Library 355 Emery St., Longmont, CO, United States

Drop-in on Mondays at 6 pm for a thoughtful, intentional and inclusive space to gather around the art and craft of writing.

Mon 15

Library Board Meeting (12/15/2025)

Monday, Dec. 15, 2025 · 7 pm - 9 pm Library Board Meeting Series

Library Board Meetings meet on the 3rd Mondays of each month, in Library Conference Room and via Zoom.

Tue 16

Open Chess Night @ the Library (12/16/2025)

Tuesday, Dec. 16, 2025 · 5:30 pm - 7:30 pm Open Chess Night Series

Longmont Public Library 355 Emery St., Longmont, CO, United States

Open chess evenings are informal and there will be basic instruction on how to play. We also have plenty of books about playing and the history of the game.

Tue 16

Dungeons & Dragons for Teens

Tuesday, Dec. 16, 2025 · 6 pm - 7:30 pm

Longmont Public Library 355 Emery St., Longmont, CO, United States

Tue 16

City Council Pre-Session

Tuesday, Dec. 16, 2025 · 7 pm - 8 pm

Tue 16

City Council Meeting

Tuesday, Dec. 16, 2025 · 7 pm - 11 pm

Longmont Civic Center 350 Kimbark St., Longmont, CO, United States

Join us at a City Council meeting.