February in Idaho Falls averages a daily high of 2.3°C with nights around -7.6°C. Expect roughly 8.7 wet days totalling 23.2mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Idaho Falls is June.
Based on IDAHO FALLS KIFI, ID US (5.5km), 1995–2024. 29 years of February data.