Packing & Clothing: Bring layers — September days in Great Falls are typically mild (60s–70s°F) with cool mornings and evenings. Include a warm jacket, waterproof shell, and sturdy shoes for outdoor exploration.
Car Rentals & Driving: Reserve rental vehicles in advance, especially if you need SUVs for mountain drives; monitor Montana road conditions for early-season changes. Allow extra time for scenic detours to Helena, Bozeman, or Glacier access points.
Health & Safety: September is prime for wildlife viewing; maintain safe distances and follow park guidelines. If hiking or fishing, carry a map, water, and cold-weather gear for higher elevations.
Booking & Schedules: For September, lock flights 3–8 weeks ahead and prioritize itineraries with single-carrier routing to minimize disruption. Check weather and airline notifications 24–48 hours before departure. CTA: Prepare your DTW→GTF packing list and reserve rental cars now to secure the best options for a September Montana getaway.