[This post has been updated]
We’re going to experience showers before the weather clears for the weekend, but the Capital Weather Gang forecasts sun for Saturday and Sunday with temperatures in the 60s and 70s. It should be pleasant for the crowds anticipated for events related to the dedication of the Martin Luther King Jr. Memorial. Here’s a look at the dedication and some of the other events that may affect your travels this weekend and beyond.

King Memorial dedication

The dedication of the King monument is set for this Sunday, after Hurricane Irene forced a delay in August. Plans and expectations have been scaled back, but the event is still expected to draw thousands to West Potomac Park and the National Mall. Dr. Gridlock has a useful guide for getting to the site. . The dedication is free and open to the public. Gates open at 6 a.m.

The District Department of Transportation said the following road closures will begin at 4 a.m. on Sunday for the dedication.

• Ramp from inbound Memorial Bridge to Ohio Drive SW and Independence Avenue. Traffic will be sent north to 23rd Street and Henry Bacon Drive.

• 17th Street between Constitution Avenue and Independence Avenue.

• Southbound Ohio Drive at Parkway Drive. Traffic will be sent to Parkway Drive and the Lincoln Memorial Circle.

• Ramp from Potomac Freeway to Ohio Drive. All traffic will be sent to Potomac Freeway or Rock Creek Parkway.

• Eastbound Independence Avenue between 15th Street and 23rd Street SW.

• Westbound Independence Avenue between 15th Street and 23rd Streets SW.

DDOT said drivers should also expect periodic road closures on Constitution Avenue between 14th and 17th Streets and on 15th Street between Constitution Avenue and Maine Avenue. The U.S. Park Police will determine when the streets will reopen.

Metro plans limited track work

Metro will not conduct track work Sunday due to the dedication of the Martin Luther King Jr. Memorial and the expected crowds, but the transit authority does plan to fit in some repairs and maintenance from 10 p.m. Friday through Saturday.

The work will affect the Red, Blue, Orange and Yellow lines. Metro said customers should add about 20 minutes to their travel time.

Here’s a look at what’s ahead:

• Red Line trains will share one track between Shady Grove and Twinbrook as crews perform platform repairs.

• Orange and Blue line trains will share one track between Eastern Market and Stadium-Armory as crews conduct tunnel repairs and replace rail fasteners.

• Orange Line trains will share one track between Vienna and West Falls Church. Crews will replace cross ties and insulators on the tracks,

• Blue and Yellow line trains will single-track between National Airport and Braddock Road stations as crews perform “rail renewal work.”

The work is scheduled to conclude before the Sunday opening, which is set for 5 a.m., two hours earlier than normal, to accommodate crowds headed to the King dedication.

University of Maryland homecoming

Expect crowds around the University of Maryland as Terps celebrate homecoming on Saturday. A busy schedule of events concludes with a much-anticipated game against the Clemson Tigers at 7 p.m. at Byrd Stadium.

Full Democracy March/Rally

The rally is scheduled to start at 9:30 a.m. on Saturday on Freedom Plaza. The march is slated for 11 a.m., with marchers heading west on Pennsylvania, then South on 15th Street to the National Mall.

Arlington Race for a Cause

The Race for a Cause, scheduled to start at 8 a.m. , will shut some Arlington County streets between 5:30 and 10 a.m.

North Quincy Street will be closed from Glebe Road to Wilson Boulevard. Wilson Boulevard’s eastbound lanes will be closed from Quincy Street to North 10th Street. Eastbound North 10th Street will be closed to Washington Boulevard. Southbound Washington Boulevard will be closed from North 10th Street to Route 244.

Commuter lot crackdown

Virginia State Police say they are going to begin a campaign to enforce the parking rules at the Horner Road commuter lot by Interstate 95 in Woodbridge. The police say drivers have been parking outside the designated parking areas and creating traffic hazards. Sometimes they park in the the travel lanes at the 2,000-space lot and interfere with traffic.

Last week, police set up message boards in the lot to alert drivers about the campaign. This week, police say, vehicles illegally parked will be ticketed and if necessary, towed.