Gillette Weather in May

Thinking of visiting Gillette in May? Expect moderate temperatures reaching 18°C (64°F) during the day, dropping to 4°C (39°F) at night, and be prepared for the wettest month of the year.

Rainfall in Gillette in May

With the most rainfall occurring this month, it's practical to keep an umbrella handy for sudden downpours. On average, there are about 13 days with rain during this month, averaging 101 mm (4 in). When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Gillette in May

Expect highs of 18°C (64°F) in Gillette in May, with nights dropping to around 4°C (39°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights drop to 4°C (39°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.

If your ideal day consists of dry skies and pleasant temperatures, June and September typically offer the best circumstances for Gillette.