Warm
Average highs sit around 27°C, giving warm days by monthly-average standards.
September verdict
Marion, Illinois, United States in September
Weather score72Very good
Very good for holiday weather
Average highs sit around 27°C, giving warm days by monthly-average standards. Sunshine averages 8h per day, so bright days are a strong part of the month. Rainfall averages 81mm, so some wet days are possible.
September weather
Monthly averages
Temp
27°C
Rain
81mm
Sun
8h
Weather score
72
Very good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 81mm, so some wet days are possible.
Bright
Sunshine averages 8h per day, so bright days are a strong part of the month.
Map
Weather map
Compare Marion, Illinois, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September27°C average high
September 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
September81mm average rain
September sits on the drier side of Marion's year, which helps with sightseeing and transfers.
Driest monthsJanuary to February, June to October, and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September8 hours average sun
September sits close to Marion's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
September72 weather score
September scores above Marion's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJune to September
These months have the strongest weather score in the monthly averages.
