North Fourth Avenue, home to two street fairs a year, will be closed to traffic overnight at East Sixth Street.

 Courtesy of Fourth Avenue Merchants Association

Even without a monsoon, there’s a high chance of rainbows Sunday.

As long as the weather is cooperative, crews will paint rainbow-colored crosswalks at Sixth Street’s Fourth Avenue intersection Sunday afternoon, starting at 2 p.m.

Sixth will be closed at the intersection from the start until 7 p.m. Fourth will be open to traffic until 8:30 p.m., when it will be shut down until 7 a.m. Monday. The Sun Link streetcar and pedestrians will not be affected, according to a city release.

The project is a collaboration between Councilwoman Karin Uhlich, the Southern Arizona AIDS Foundation and the Fourth Avenue Merchants Association.

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Contact: mwoodhouse@tucson.com or 573-4235. On Twitter: @murphywoodhouse