Mild
Average highs are around 21°C, so days are mild rather than hot.
May verdict
Great Lakes (South Dakota), United States in May
Weather score55Good
Good for holiday weather
Average highs are around 21°C, so days are mild rather than hot. Sunshine averages 9.4h per day, so bright days are a strong part of the month. Rainfall averages 64mm, which is relatively low for holiday planning.
May weather
Monthly averages
Temp
21°C
Rain
64mm
Sun
9.4h
Weather score
55
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 64mm, which is relatively low for holiday planning.
Bright
Sunshine averages 9.4h per day, so bright days are a strong part of the month.
Map
Weather map
Compare Great Lakes (South Dakota), United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
May21°C average high
May sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
May64mm average rain
May is wetter than Great Lakes (South Dakota)'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.
Sun
May9.4 hours average sun
May is brighter than Great Lakes (South Dakota)'s yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
May55 weather score
May scores below Great Lakes (South Dakota)'s yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
