President Russell M. Nelson has announced that the open house tours for the newly renovated Salt Lake Temple will be April to October 2027. Below is the text from the announcement:

On February 14, 1853, a groundbreaking ceremony in Salt Lake City began a 40-year journey of faith and sacrifice, culminating in the dedication of the Salt Lake Temple in 1893.
 
A current and comprehensive renovation to strengthen this sacred house of the Lord for future generations is now nearing completion.
 
Today, exactly 172 years after the groundbreaking ceremony, I am delighted to announce that the temple will reopen for tours during a public open house from April to October 2027.
 
We warmly invite our friends to come and learn about God’s plan for His children and rejoice in the love of Jesus Christ. Details about this event will be shared as April 2027 approaches.
 
As houses of the Lord now dot the earth, I invite you to cherish your time and service at the temples closest to you as we prepare for the reopening of the Salt Lake Temple in 2027.

 
Learn more in the article “The Prophet Announces Salt Lake Temple Open House Celebration Dates.”