There are also wilderness fees for overnight backcountry users. You can get current weather conditions and a four-day forecast now. Be prepared by dressing in layers and carrying a sweater and rain gear. Summer is the warmest and driest time of the year, with frequent fog banks and temperatures in the low 70s. Spring and fall are cool and wet, while the greatest rainfall is in December and January, when daytime temperatures average in the 40s.
Weather is colder and more severe in the mountains, with heavy snows possible at high elevations.