Events Calendar

December 2025

Fri 12

Friday, Dec. 12, 2025 · 10:30 am - 11 am

All Ages Stay & Play

Longmont Library 409 4th Ave., Longmont, CO, United States

Join us for open play time for birth-4-year-olds and their caregivers. This program is in English. No registration necessary.

Fri 12

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

Friday Afternoon Concert: Flatirons Jazz Orchestra

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

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

All Out League

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

Fri 12

Friday, Dec. 12, 2025 · 5 pm - 8 pm

Longmont Lights Holiday Festival

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

Sat 13

Saturday, Dec. 13, 2025 · 9 am - 5 pm

Friends of the Longmont Library (FOLL) Book Sale

Longmont Library 409 4th Ave., Longmont, CO, United States

Sat 13

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

Discovery Days Art

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

Sat 13

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

Ornaments & Keepsakes Big-Kids Day at Discovery Days

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

Sat 13

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

English Conversation Group

Longmont Library 409 4th Ave., Longmont, CO, United States

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

Sat 13

Saturday, Dec. 13, 2025 · 11 am - 11:30 am All Ages Storytime Series

All Ages Storytime

Longmont Library 409 4th Ave., Longmont, CO, United States

A 30-minute Saturday storytime designed for children of all ages and their grown-ups! Join us as we share picture books, move, dance and sing together.

Sat 13

Saturday, Dec. 13, 2025 · 5 pm - 7 pm

Longmont Lights Holiday Parade

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

Sun 14

Sunday, Dec. 14, 2025 · 2 pm - 3 pm

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

Longmont Library 409 4th Ave., Longmont, CO, United States

Mon 15

Monday, Dec. 15, 2025

Youth Basketball League Registration Deadline

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

Mon 15

Monday, Dec. 15, 2025 · 10 am - 10:30 am

Bilingual Storytime

Longmont Library 409 4th Ave., Longmont, CO, United States

Mon 15

Monday, Dec. 15, 2025 · 10:30 am - 11 am

All Ages Stay & Play

Longmont Library 409 4th Ave., Longmont, CO, United States

Mon 15

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

CANCELLED Water Advisory Board

Mon 15

Monday, Dec. 15, 2025 · 4 pm - 5 pm

Mythical Creatures Club: Kitsunes

Longmont Library 409 4th Ave., Longmont, CO, United States

Mon 15

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

Navigators

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

Mon 15

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

Drop-in Writers Group

Longmont Library 409 4th Ave., Longmont, CO, United States

Mon 15

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

Drop-in Writers Group

Longmont Library 409 4th Ave., 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

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

Library Board Meeting

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