Mild
Average highs are around 20°C, so days are mild rather than hot.
May verdict
Williston, North Dakota, United States in May
Weather score52Mixed
Mixed for holiday weather
Average highs are around 20°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 49mm, which is relatively low for holiday planning.
May weather
Monthly averages
Temp
20°C
Rain
49mm
Sun
9.4h
Weather score
52
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 49mm, 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 Williston, North Dakota, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
May20°C average high
May sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
Rain
May49mm average rain
May is wetter than Williston's yearly average, so flexible plans matter more.
Driest monthsJanuary to April and August 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 Williston'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
May52 weather score
May sits close to Williston's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
