Citywide Calendar

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Welcome to Longmont's Calendar of Events!

The events listed on this Calendar are City of Longmont sponsored events and is not a comprehensive list of all activities happening around the community. Dates and times of these events are subject to change without notice.

Trash, Recycling, & Composting - Holidays & Events

View via the address-based Online Collection Calendar and sign up for reminders.

Other Community Events

To view other events being held around Longmont, please visit the Longmont visitors bureau events calendar at

Subscribe to the City Calendar

To get events emailed to you directly, sign up for the Calendar eNotifications and then select the Calendar categories.

Summer Reading Program Kickoff Party

  • Say a happy goodbye to school and big hello to summer at our annual kickoff party celebrating summer reading!
  • Kick off your summer with a free night of swimming and activities at Sunset Pool.
  • Bring a picnic or chow down with some of Longmont's best food trucks!
  • Enjoy a spectacular family evening while learning what your library and community have to offer this summer.
  • There will be plenty of activities for non-swimmers!
  • Children age 8 and younger must be accompanied by a parent or guardian.
  • PLEASE NOTE: Should this program be postponed or cancelled for any reason, including weather, notice of the change will be posted to the Library's website and social media platforms by 12 noon the day of the program.
  • Registration is required and will open here on Monday, April 29 at 10 am. No email address?  Call (303) 651-8477 to register.

Click or tap to register for this program.

The Friends of the Longmont Library generously support library programs and services.

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