Cool
Average highs are around 18°C, so pack for cooler days.
October verdict
Ottawa, Illinois, United States in October
Weather score41Mixed
Mixed for holiday weather
Average highs are around 18°C, so pack for cooler days. Sunshine averages 6.2h per day, enough for a balanced month. Rainfall averages 58mm, which is relatively low for holiday planning.
October weather
Monthly averages
Temp
18°C
Rain
58mm
Sun
6.2h
Weather score
41
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 58mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 6.2h per day, enough for a balanced month.
Map
Weather map
Compare Ottawa, Illinois, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
October18°C average high
October is close to Ottawa's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
Rain
October58mm average rain
October sits near Ottawa's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to February, October, and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
October6.2 hours average sun
October sits close to Ottawa'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
October41 weather score
October scores below Ottawa'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.
