Weather at Lassen can vary dramatically throughout the year. Learn more about Lassen's weather. The nearby town of Susanville has a humid continental climate, with cold winters and very warm, mostly dry summers. Average January temperatures are a high of 40.4 °F (4.7 °C) and a low of 20.8 °F (-6.2 °C). Average July temperatures are a high of 88.4 °F and a low of 49.8 °F. Temperatures reach 90 °F or higher on an average of 36.9 days, and drop to 32 ° or lower on an average of 164 days days annually.
Winter Pass - $10.00
Valid for 1-7 days at Lassen Volcanic National Park between December 1 and April 15.
Vehicle Pass - $20.00
Valid for 1-7 days at Lassen Volcanic National Park between April 16 and November 30
Motorcycle Pass - $15.00
Valid for one motorcycle regardless of the amount of passengers. Valid for 7 days at Lassen Volcanic National Park.
Individual Entrance Pass - $10.00
Per person entrance fee for a visitor traveling on foot, bicycle, or for individuals traveling together in a vehicle as a non-commercial, organized group.Valid for 7 days at Lassen Volcanic National Park.
Lassen Annual Pass - $40.00
Valid for one year from month of purchase at Lassen Volcanic National Park and Whiskeytown National Recreation Area. Passes may be purchased as park entrance stations mid-May through October.
Year-round visitor center includes an exhibit hall, auditorium, amphitheater, bookstore, dining area with fireplace, patio, gift shop and cafe.
The historic museum is located one mile from the northwest entrance of the park near Manzanita Lake. The museum is only open during the summer months. Visit for information, to view exhibits and the park film, shop at the educational bookstore, or participate in a ranger-led program.