Idaho Falls Weather in May

Idaho Falls in May sees pleasant daytime temperatures of 19°C (66°F) and nighttime lows of 4°C (39°F). With the highest rainfall of the year it is wise to pack an umbrella and expect frequent showers.

Rainfall in Idaho Falls in May

As the month with the most rain, you'll want to have an umbrella with you to manage the frequent showers. Climate statistics over the past 30 years suggest around 10 days of rain, with 34 mm (1.3 in) average for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.

Temperature in Idaho Falls in May

In May, Idaho Falls sees pleasant temperatures, with highs of 19°C (66°F). Nights drop to around 4°C (39°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. At 4°C (39°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

For Idaho Falls itself, June and September generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.