September 2025

Sat 13

History Tour at Sandstone Ranch

Saturday, Sept. 13, 2025 · 10:30 am - noon History Tour at Sandstone Ranch Series

Sandstone Ranch Visitors Center 3001 Sandstone Dr., Longmont, CO, United States

Sat 13

Community Water Academy 

Saturday, Sept. 13, 2025 · 1:30 pm - 3:30 pm

Longmont Senior Center 910 Longs Peak Ave., Longmont, CO, United States

Sun 14

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

Sunday, Sept. 14, 2025 · 2 pm - 3 pm

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

Mon 15

Lotería Scavenger Hunt

Monday, Sept. 15, 2025 · 9 am - Sunday, Sept. 21, 2025 · 5 pm

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

Mon 15

POSTPONED Water Advisory Board

Monday, Sept. 15, 2025 · 3 pm - 5 pm

Mon 15

Mythical Creatures Club: Greek Mythology

Monday, Sept. 15, 2025 · 4 pm - 5 pm

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

Mon 15

Navigators (9/15/2025)

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

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

Mon 15

Historic Main Street Walking Tour

Monday, Sept. 15, 2025 · 5:30 pm - 7 pm

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

Mon 15

Library Board Meeting

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

Tue 16

Bird Walk at Sandstone Ranch (9/16/2025)

Tuesday, Sept. 16, 2025 · 7:30 am - 10 am Bird Walk at Sandstone Ranch Series

Sandstone Ranch Visitors Center 3001 Sandstone Dr., Longmont, CO, United States

Tue 16

Discovery Days Music & Movement

Tuesday, Sept. 16, 2025 · 9:15 am - 2 pm Discovery Days Music & Movement Series

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

Tue 16

Studio Series: Intro to Watercolor (9/16/2025)

Tuesday, Sept. 16, 2025 · 9:30 am - 11:30 am Studio Series: Intro to Watercolor Series

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

Tue 16

Lanyon Park Historic Walking Tour

Tuesday, Sept. 16, 2025 · 10 am - 11 am

Lanyon Park 1900 Collyer Street, Longmont, Colorado, United States

Tue 16

After School Music Classes: Vocal Vibes (9/16/2025)

Tuesday, Sept. 16, 2025 · 4 pm - 5 pm After School Music Classes: Vocal Vibes Series

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

Tue 16

College Common Application Boot Camp

Tuesday, Sept. 16, 2025 · 4 pm - 6 pm

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

Tue 16

Open Chess Night @ the Library (9/16/2025)

Tuesday, Sept. 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

City Council Pre-Session

Tuesday, Sept. 16, 2025 · 6 pm - 7 pm

Tue 16

Dungeons & Dragons for Teens (9/16/2025)

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

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

Wed 17

Discovery Days Art (9/17/2025)

Wednesday, Sept. 17, 2025 · 9:15 am - 2:15 pm Discovery Days Art Series

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

Wed 17

Teen Craft & Create Club (9/17/2025)

Wednesday, Sept. 17, 2025 · 3 pm - 5 pm Teen Craft & Create Club Series

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