Thunderstorm wind is the standout hazard at Timpanogos Cave, with 14 recorded events in the county, making it the most frequent weather threat families will face here. Those storms can roll in fast along the Wasatch Front, and the exposed half-mile trail that climbs 1,065 feet to the cave entrance leaves hikers with little shelter when winds pick up. The same storm cells that drive the wind also produced 6 hail events and 2 flash floods in the same period, so the threat rarely arrives alone.
Check the National Weather Service forecast for American Fork Canyon specifically before you leave camp each morning, since valley forecasts often miss what develops along the ridge. Pack a lightweight rain shell and a hard-shell hat or hood for every hiker in your group—hail on an open switchback trail is painful and disorienting. If you see lightning building to the southwest, turn around immediately rather than waiting to reach the cave entrance.
Top recorded hazards in Utah County
County dataFrom NOAA Storm Events (2024). Counts of recorded incidents — not all occurred at this park.
- Thunderstorm Wind 14
- Hail 6
- Flash Flood 2
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About Timpanogos Cave National Monument
The visitor center, caves, and cave tours have not yet opened for the 2026 season. Hike your way past stunning vistas to explore a hidden underground world. Taste the thrill of caving as you twist and bend to enter beautifully decorated rooms. Learn the science behind formations and hear stories of cave exploration and preservation. Experience and discover as you go – geologic mysteries await
Weather
Although inside the caves its always 43-48 F, temperatures on the cave trail can range from the 30s up to above 100 degrees F, depending on time of year. Carrying drinking water is a necessity, especially in summer. In the mountains, weather sometimes presents interesting challenges. The cave and cave trail do not close due to rain, unless that rain is heavy enough to bring rockfall. They will close due to high winds/rockfall, or in lightning storms. Call the visitor center if you have specific concerns.