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 72mm, which is relatively low for holiday planning.
Monthly averages
Temp
20°C
Rain
72mm
Sun
8.8h
Weather score
48
Mixed
Cool
Average highs are around 20°C, so pack for cooler days.
Drier
Rainfall averages 72mm, 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 Box Elder, South Dakota, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
May20°C average high
May is close to Box Elder'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.
May72mm average rain
May is wetter than Box Elder's yearly average, so flexible plans matter more.
Driest monthsJanuary to March and September 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 Box Elder'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.
May48 weather score
May scores below Box Elder'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.