From the California State Parks Foundation:
Give thanks for your favorite state parks by volunteering with Park Champions. Help us repair popular hiking trails at Chino Hills or Wildwood Canyon, improve habitat by removing invasive plants at Silver Strand, or help with general park maintainence and CAMP FOR FREE at Palomar Mountain.
Chino Hills State Park
Saturday, November 16, 9:00am to 1:00pm
Help us make improvements to the Easy Street Trail. Teens 14 and up welcome with a legal guardian. See a map here.
Silver Strand State Beach
Saturday, December 7, 9:00am to 1:00pm
This family friendly workday is part of an ongoing project to restore valuable beach dune habitat at Silver Strand. Kids 10 and up welcome with a legal guardian. See a map here.
Palomar Mountain State Park
Sunday, December 8, 9:00am to 1:00pm
This workday will focus on general park maintenance. Teens 14 and up welcome with a legal guardian. FREE CAMPING available Saturday night. See a map here.

Based on changing weather trends, increases in relative humidity and a decrease in average temperatures, the Sierra National Forest is lifting the fire restrictions that were put in effect July 2.
Leading Adventure Company in Yosemite National Park honors veterans by sharing outdoor adventures during holiday weekend.
Nathan Roberson recently wrote about the incredible number and diversity of wildflowers in Yosemite. From the article:
Beginning today, Christmas tree permits will be available from the Mendocino National Forest for the 2013 holiday season.