Cool
Average highs are around 16°C, so pack for cooler days.
October verdict
Poor for holiday weather
Average highs are around 16°C, so pack for cooler days. Sunshine averages 5.8h per day, enough for a balanced month. Rainfall averages 63mm, which is relatively low for holiday planning.

Monthly averages
Temp
16°C
Rain
63mm
Sun
5.8h
Sea
14°C
Weather score
30
Poor
Cool
Average highs are around 16°C, so pack for cooler days.
Drier
Rainfall averages 63mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 5.8h per day, enough for a balanced month.
Cool sea
Sea temperatures average 14°C, so the water can feel cool.
Map
Compare Waukegan, Illinois, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
October16°C average high
October is close to Waukegan'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.
October63mm average rain
October sits near Waukegan'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.
October5.8 hours average sun
October sits close to Waukegan'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.
October14°C average sea
October is close to Waukegan's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJuly to September
Sea temperatures are usually near 20°C in this stretch, so swimming comfort is at its strongest.
October30 weather score
October scores below Waukegan'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.