Check the two links to the right for the most up to date information. The top link takes you to the Park Service's website for in-park road status. The bottom link is to Washington State Dept of Transportation's website that contains the most up to date information regarding highway openings and closures through the mountain passes. This will let you know if Chinook or Cayuse Pass is open or not. Also on the sidebar is the Park Service's twitter feed. Each morning our dispatchers try to tweet out an approximate gate opening AND they'll tweet when the gate actually opens.
Due to extreme weather and terrain inside Mount Rainier National Park roads can close due to downed trees, rock slides, and/or snow slides throughout the year. Drive cautiously and obey traffic regulations. Chains and traction tires may be necessary at certain times of the year.
Parking can be scarce during weekends when the weather is nice. Be sure to park in the overnight zone when leaving for a climb.