Summer daytime highs average 75° to 80°F; lows average 50°F. Occasional thunderstorms occur in summer. Winter daytime highs average 40°F; lows average 20°F. Morning fog is frequent from autumn through spring.
Tulelake - Butte Valley Fairgrounds Museum Fee - $3.00
While there is no fee for the Tule Lake Unit, the Tulelake - Butte Valley Fairgrounds does charge a fee to visit their museum.
The Tule Lake Unit currently used the Fairgrounds Museum as its temporary visitor center. This shared visitor center is staffed by Rangers seven days a week from Memorial Day weekend - Labor Day from 8:30am - 5:00pm. From Labor Day - Memorial Day the visitor center is not staffed by Rangers, but you may view the exhibits and pick up maps and brochures Monday - Friday from 9:30 a.m to 4:30 p.m. or when fair staff is there.