Cool
Average highs are around 20°C, so pack for cooler days.
May verdict
Casper, Wyoming, United States in May
Weather score46Mixed
Mixed for holiday weather
Average highs are around 20°C, so pack for cooler days. Sunshine averages 9.1h per day, so bright days are a strong part of the month. Rainfall averages 55mm, which is relatively low for holiday planning.
May weather
Monthly averages
Temp
20°C
Rain
55mm
Sun
9.1h
Weather score
46
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 55mm, which is relatively low for holiday planning.
Bright
Sunshine averages 9.1h per day, so bright days are a strong part of the month.
Map
Weather map
Compare Casper, Wyoming, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
May20°C average high
May is close to Casper'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.
Rain
May55mm average rain
May is one of Casper's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to April and June to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
May9.1 hours average sun
May is brighter than Casper'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
May46 weather score
May scores below Casper'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.
