Custer Weather in May

May in Custer brings moderate temperatures, with highs of 16°C (61°F) and nights dropping to 3°C (37°F). It's the rainiest month of the year, so come prepared with waterproof gear.

Rainfall in Custer in May

As the month with the most rain, you'll want to have an umbrella with you to manage the frequent showers. Historically, the month has about 15 days of rain, averaging 99 mm (3.9 in) in total. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Custer in May

Daytime temperatures in Custer reach 16°C (61°F) in May, dropping to 3°C (37°F) at night. The difference between afternoon and evening temperatures is usually noticeable. Nights drop to 3°C (37°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.

If you prefer dry days with pleasant temperatures, June, July, August and September typically offer 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.