Mild
Average highs are around 25°C, so days are mild rather than hot.
May verdict
Mount Vernon, Illinois, United States in May
Weather score62Good
Good for holiday weather
Average highs are around 25°C, so days are mild rather than hot. Sunshine averages 8.9h per day, so bright days are a strong part of the month. Rainfall averages 113mm, so some wet days are possible.
May weather
Monthly averages
Temp
25°C
Rain
113mm
Sun
8.9h
Weather score
62
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 113mm, so some wet days are possible.
Bright
Sunshine averages 8.9h per day, so bright days are a strong part of the month.
Map
Weather map
Compare Mount Vernon, Illinois, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
May25°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
May113mm average rain
May is one of Mount Vernon's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to February, June, and August to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
May8.9 hours average sun
May is brighter than Mount Vernon's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
May62 weather score
May sits close to Mount Vernon's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
