Cool
Average highs are around 20°C, so pack for cooler days.
May verdict
Mixed for holiday weather
Average highs are around 20°C, so pack for cooler days. Sunshine averages 8.8h per day, so bright days are a strong part of the month. Rainfall averages 70mm, which is relatively low for holiday planning.
Monthly averages
Temp
20°C
Rain
70mm
Sun
8.8h
Weather score
45
Mixed
Cool
Average highs are around 20°C, so pack for cooler days.
Drier
Rainfall averages 70mm, which is relatively low for holiday planning.
Bright
Sunshine averages 8.8h per day, so bright days are a strong part of the month.
Map
Compare Gillette, Wyoming, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
May20°C average high
May is close to Gillette's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
May70mm average rain
May is one of Gillette's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to April and July to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
May8.8 hours average sun
May sits close to Gillette's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
May45 weather score
May scores below Gillette's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.