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What time does the University of Colorado Boulder library close?

Sources checked September 15, 2026

ANSWER

Norlin Library’s regular close time changes by day and term. For the current Fall Semester hours listed by CU Boulder Libraries, Norlin Library closes at 11 p.m. Monday through Thursday, 6 p.m. Friday and Saturday, and 11 p.m. Sunday.

YOUR NEXT DECISION

Turn the answer into your next step

  • Check the live CU Boulder Libraries hours page before you go.
  • Confirm whether you mean Norlin Library or another campus library.
  • Watch for holiday and exception dates that change normal closing times.

Norlin Library regular closing times

For Fall Semester at CU Boulder, Norlin Library closes at 11 p.m. Monday through Thursday, 6 p.m. on Friday and Saturday, and 11 p.m. on Sunday. The Libraries hours page says these fall hours run August 20 through December 11.

  • If you’re going late, Sunday through Thursday gives you the longest study window.
  • Norlin Commons has different access hours than the main library, so check the correct space before you head over.
  • Hours can change on listed exception dates, including closures and shortened holiday hours.

How to confirm today’s closing time

CU Boulder Libraries points users to its live hours page for today’s hours, and Norlin Library’s page links to the current calendar of hours. That’s the best place to check if you need the exact close time for today or for a holiday period.

  • Use the live hours page for same-day confirmation.
  • Look for exceptions before assuming the normal semester schedule still applies.
  • If you need a specific library other than Norlin, the libraries page lists Business, Earth Sciences & Map, Engineering, Math & Physics, Law, and Music libraries too.

Sources

  1. University Libraries Hours
  2. Norlin Library
  3. University Libraries Hours - LibCal
  4. Home | University Libraries | University of Colorado Boulder
  5. Home | University Libraries | University of Colorado Boulder

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