27 Aug - Closed for the remainder of the summer and fall season East Entrance to Fishing Bridge Dates and times to be announced. Snow tires or chains may be required. May. Some roads will also open, as conditions allow, for bicycle travel only, beginning in the end of March. Lower elevation daytime temperatures are often in the 70s and occasionally in the 80s. Nights are usually cool and temperatures may drop below freezing at higher elevations.
Thunderstorms are common in the afternoons.
It has snowed several inches in July and August at Canyon. Temperatures often range from minus-zero to 20F throughout the day. The record low temperature is minus-66F. Snowfall is highly variable. While the average is 150 - 600 inches per year, depending on elevation, and year. At any time of year, be prepared for sudden changes.