Current NPCheck data from the same park directory used by the interactive guide.
| Park | State | Status | Current details |
|---|---|---|---|
| Pinnacles National Park | California | excellent | Hot and sunny, high of 92F. Hike early in the morning. |
| Death Valley National Park | California/Nevada | excellent | Extreme heat in June — temperatures regularly exceed 115°F and may reach 120°F or higher. Carry at least 1 gallon of water per person per day. Limit strenuous activity to early morning hours. |
| Kings Canyon National Park | California | excellent | Clear, high of 72F. |
| Petrified Forest National Park | Arizona | excellent | Sunny and warm, high of 80F. |
| Canyonlands National Park | Utah | excellent | All main paved roads are open at Island in the Sky and The Needles districts. Backcountry 4WD roads require high-clearance, four-wheel-drive vehicles with low-range gear — conditions vary after rain or snow and roads can become impassable without warning. |
| Theodore Roosevelt National Park | North Dakota | excellent | Sunny, high of 75F. |
| Timpanogos Cave National Monument | Utah | excellent | |
| Grand Canyon National Park | Arizona | excellent | South Rim roads are currently open. Desert View Drive is open year-round. All main access routes and entrance roads are open. |
| Lassen Volcanic National Park | California | good | Partly cloudy, high of 60F. |
| White Sands National Park | New Mexico | good | Sunny and warm, high of 82F. |
| Natural Bridges National Monument | Utah | good | Bridge View Drive (9-mile paved scenic loop) open year-round, weather permitting. Vehicles towing trailers must unhitch at the visitor center before entering the loop. |
| Saguaro National Park | Arizona | good | Sunny and very hot, high of 104F. |
| Great Basin National Park | Nevada | good | Cool and clear, high of 58F. |
| Crater Lake National Park | Oregon | good | Cool and partly cloudy, high of 55F. |
| Cedar Breaks National Monument | Utah | good | While the duration of the closure is snow dependent, the road is closed to vehicles from mid-November to mid-May, on average. Current Status of Park Roads State Route 148, through the Monument is open. The road running through the Northern end of the park, State Route 143, remains open almost year-round. |
| Redwood National Park | California | good | Foggy and cool on coast, high of 62F. |
| Capitol Reef National Park | Utah | good | Sunny and warm, high of 75F. |
| Sequoia National Park | California | good | Clear, high of 68F. |
| Zion National Park | Utah | good | Afternoon thunderstorms common in summer. Flash flood risk in slot canyons increases after rain upstream. |
| Channel Islands National Park | California | good | Mild and foggy, high of 65F. Moderate swell. |
| Wind Cave National Park | South Dakota | good | Sunny, high of 72F. |
| Arches National Park | Utah | good | The main park road is open year-round. Unpaved backcountry roads may require high-clearance 4WD or become impassable following summer thunderstorms. |
| Mesa Verde National Park | Colorado | minor-caution | Sunny, high of 75F. |
| Bryce Canyon National Park | Utah | minor-caution | Cool and clear, high of 62F. Excellent conditions. |
| Black Canyon of the Gunnison National Park | Colorado | minor-caution | Clear, high of 68F. |
| Glacier National Park | Montana | minor-caution | Cold and overcast. Snow possible above 5,000 ft. High of 42F. |
| Joshua Tree National Park | California | minor-caution | |
| Mount Rainier National Park | Washington | minor-caution | Partly cloudy with snow possible at elevation, high of 55F. |
| Yellowstone National Park | Wyoming | minor-caution | All main park roads are open for the 2026 summer season. Gardner River High Bridge (0.5 miles from Mammoth Hot Springs toward Tower Junction) has single-lane traffic with up to 15-minute delays, 24 hours/day, through late October 2026. Chip seal work at various park locations may cause up to 30-minute delays throughout 2026. |
| Yosemite National Park | California | caution | |
| Rocky Mountain National Park | Colorado | caution | Clear skies, high of 65F at lower elevations. Wind advisory above treeline. |
| Grand Teton National Park | Wyoming | caution | Partly cloudy, high of 70F. |