Lassen Volcanic
Lassen Volcanic National Park is home to steaming fumaroles, meadows freckled with wildflowers, clear mountain lakes, and numerous volcanoes. Jagged peaks tell the story of its eruptive past while hot water continues to shape the land.
Official-source overview · detailed planning coverage is still being reviewed
At a glance
- State / territory
- California
- Region
- West
The official overview below is available now. Park-specific fees, distances, climate tables, and reviewed day plans are shown only when their supporting records have been reviewed. Check current access and arrangements with the park before travel.
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When to go
Weather at Lassen can vary dramatically throughout the year.
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.
General official weather guidance; historical context, not a forecast.
Arrive and stay
From Interstate 5 (Redding), take Hwy 44 - 48 miles east to the junction of Hwy 89. Follow Hwy 89 south 1 mile to the north entrance of the park. From Interstate 5 (Red Bluff) take Hwy 36 E - 51 miles east to the junction of Hwy 89. Follow Hwy 89 north 6 miles to south entrance of the park.
Official directionsRisks and official checks
Conditions, access, reservations, and operating hours can change. This website is a planning resource and does not provide live conditions.
Official park informationSources and your trip kit
Where this information comes from
Park overview information is drawn from identified official sources. Published guide facts, assumptions, and editorial decisions retain their own review records.
Source retrieved: 2026-10-01. This is not a live-conditions check.
National Park Service: Lassen Volcanic
Image credit: NPS Photo / Scott Arnaz. See the image credits.
Data release 0 · Independent planning resource. Not affiliated with the National Park Service.