The clearest concern at Grant-Kohrs Ranch isn't a weather hazard — it's the surrounding community's crime rate. Powell County recorded a violent crime rate of 449 per 100,000 residents in 2023, which runs well above the national average. For families staying in the area, that context matters more than the site's minimal natural-hazard footprint, which logged just one thunderstorm wind event with no injuries or deaths.
When planning your stay, choose established campgrounds or RV parks with good lighting and active hosts rather than isolated overnight spots near the townsite. Keep valuables locked in your vehicle or RV, and don't leave gear unattended at a picnic site while you tour the ranch. If you're arriving after dark, map your route in advance so you're not navigating unfamiliar streets in Deer Lodge at night.
Top recorded hazards in Powell County
County dataFrom NOAA Storm Events (2024). Counts of recorded incidents — not all occurred at this park.
- Thunderstorm Wind 1
Gear keyed to this park's risks
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About Grant-Kohrs Ranch National Historic Site
Wide open spaces, the hard-working cowboy, his spirited cow pony, and vast herds of cattle are among the strongest symbols of the American West. Once the headquarters of a 10 million acre cattle empire, Grant-Kohrs Ranch National Historic Site preserves these symbols and commemorates the role of cattlemen in American history.
Weather
Spring: Temperatures can fluctuate greatly. Sub-freezing temperatures in the morning can give way to mild days. Snow in early spring, rain in late season. Summer: Temperatures can average 70-80 F, but can reach highs of 100 F. Rain rare. Dry and hot. Fall: Temperatures can fluctuate greatly. Sub-freezing mornings can give way to mild days. Rain in early fall likely. Winter: Temperature can fall to -30 F, with highs of 10-20 F. Snow is possible. Cold weather gear is highly recommended.