Henry W. Coe State Park
Henry W. Coe State Park is the largest state park in northern California and protects and preserves 87,000 acres of scenic hills and mountain ridges in the Diablo Mountain Range. This largely undeveloped park welcomes backpackers, equestrians, mountain bikers, day-hikers, and anyone seeking solitude in a nearly untouched setting.
After a rainy winter, wildflowers bloom in profusion from February through March; by April the color is rampant. The landscape is rich with blue lupine and orange-yellow California poppies, bright yellow gold fields, and delicate baby blue eyes. Mariposa lilies, larkspur, wild hyacinth and Ithuriel’s spear show themselves in late April and May. The variety and richness of the flora attract visitors from miles around.
Hot, dry summers bring highs above 90 degrees Fahrenheit, cooling to the 50’s at night. Hikers should carry, and drink, plenty of water, even on less-strenuous trails. Winter is wet, with highs in the 50’s and lows in the 30’s. In winter, seasonal creeks can overflow and become dangerously impassable. Spring and fall are the most temperate and enjoyable times to visit. Prepare for the variable climate and rugged landscape by dressing in layers.