The Winter Haven Public Library will be closed in 2021 on:
| Friday, January 1 | New Year’s Day |
| Monday, January 18 | Dr. M. L. King, Jr. Day |
| Monday, February 15 | Presidents’ Day |
| Monday, May 31 | Memorial Day |
| Monday, July 5 | Independence Day (observed) |
| Monday, September 6 | Labor Day |
| Thursday, November 11 | Veterans Day |
| Thursday, November 25 | Thanksgiving Day |
| Friday, November 26 | Day after Thanksgiving |
| Thursday, December 23 | Christmas Eve (Observed) |
| Friday, December 24 | Christmas Day (Observed) |
| Saturday, December 25 | Christmas Day |
| Friday, December 31, 2022 | New Year’s Day (Observed) |
| Saturday, January 1, 2023 | New Year’s Day |