Idaho Falls in March
Good time to visit
March plays hard to get with spring weather. You might catch a beautiful day, but you'll probably catch a few miserable ones too.
Weather
March teases you with the first hints of spring, but don't get your hopes up too high. Snow still falls regularly and temperatures hover around freezing. The last half of the month occasionally breaks into the 40s, making locals celebrate like it's summer.
8°C high-4°C low5 rain days
Crowds & Cost
low crowds
~$90/day average
Events & Festivals
- •St. Patrick's Day celebrations downtown
March Tips
- •Pack layers - morning frost gives way to afternoon slush
- •Mud season begins; trails get messy
- •Some attractions start extending hours mid-month
All Months
Summer is Idaho Falls' sweet spot. June through September brings warm days, minimal rain, and full access to outdoor activities. July and August see temperatures in the 80s with cool evenings perfect for riverside walks. This is also peak season for Yellowstone access, though you'll share the roads with plenty of other visitors.
September might be the secret best month. Crowds thin out, temperatures stay comfortable in the 70s, and fall colors start showing in the surrounding mountains. Hotel rates drop 20-30% after Labor Day.
Winter transforms the area into a snow sports playground. Kelly Canyon Ski Area, 30 minutes northeast, offers affordable skiing with lift tickets around $45. The city itself stays relatively mild thanks to the river, but pack layers - morning temps can hit single digits while afternoons warm to the 30s.
Avoid late March through early May unless you enjoy mud season. Snowmelt creates soggy conditions, many trails remain inaccessible, and it's too early for most summer activities but too late for winter sports.
Idaho Falls Scores
Solo
6/10
Couples
6/10
Families
8/10
Adventure
8/10
Budget
8/10
Luxury
4/10
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