Weather

shallow creek with gray clouds above, overcast — Summer sun and winter snow, weather conditions vary heavily in Lassen. Sometimes even hour to hour!
NPS photo

Weather at Lassen generally falls under winter or summer conditions. Winter weather and conditions exists approximately November to May and summer conditions exist June through October. Spring and fall tend to be shoulder seasons. Winter conditions usually persist well into June in the higher elevations of the park (Lassen Peak area). Spring snow storms can occur as late as June. Cooler temperatures in the fall season make for excellent hiking weather with occasional snow showers occurring in higher elevations in October.

Weather Forecasts

Current weather forecasts for the park are available online from the National Weather Service:

Learn More

Views from Right Now
Webcams

See what the park currently looks like though continuously updating webcams.
Impacts from Wildfire Smoke
Air Quality

Smoke impacts in the park vary from day to day. View current conditions and learn about how to protect yourself from wildfire smoke.
Know Before You Go!
Current Park Conditions

View current park conditions, including closures, alerts, and hazards.
Trail Conditions, May to October

Trails snow over in winter and melt out in spring. Check for updated trail conditions.
November to May, Snow's in Play!
Oversnow Route Conditions

November to May, learn about conditions on oversnow routes in the park.
Directions & Getting Around

Find your way to the park, explore around the park, and view park maps.
Spring Road Clearing Operations

Every spring and summer, Lassen must clear its main park road of 30-40 feet of snow. Learn more about this process and current operations.