Best Time to Drive: Cairo, IL to Waukegan, IL

The best overall window to drive from Cairo, IL to Waukegan, IL is June to September. July is especially comfortable, and 8 AM to 11 AM is usually the easiest departure window. The main things to watch are winter mix risk.

Best overall window

June to September

This stretch gives the steadiest mix of comfort, daylight, and lower weather friction.

Easiest departure pattern

8 AM to 11 AM

Mid-morning is usually the steadiest all-around departure window.

Most challenging stretch

November to December

November is one of the harder months for this route because the weather friction stacks up faster.

Why This Route Scores Differently

You can usually do this in one long day, which makes daylight and storm timing more important than hotel planning.

The current best window is June to September, when the drive is more likely to feel steady end to end.

This score uses multiple NOAA sample points along the route instead of a single state-wide climate average.

Month-by-Month Driving Conditions

Jan

Challenging 20°F

Feb

Fair 23°F

Mar

Fair 31°F

Apr

Fair 39°F

May

Good 47°F

Jun

Great 54°F

Jul

Great 57°F

Aug

Excellent 55°F

Sep

Great 50°F

Oct

Good 41°F

Nov

Challenging 32°F

Dec

Challenging 24°F

Best Good/Fair Challenging

Average Conditions by Month

January

Avg high / low 26 / 14°F

Moisture 2.3 in rain

Rating Challenging

Best departure

9 AM to 12 PM

Winter mix risk

Temperatures are workable, but not as easy as the best shoulder-season windows.

Rain disruption is usually limited compared with wetter months.

February

Avg high / low 30 / 17°F

Moisture 2 in rain

Rating Fair

Best departure

9 AM to 12 PM

Winter mix risk

Temperatures are workable, but not as easy as the best shoulder-season windows.

Rain disruption is usually limited compared with wetter months.

March

Avg high / low 38 / 24°F

Moisture 2.8 in rain

Rating Fair

Best departure

9 AM to 12 PM

Winter mix risk

Temperatures are workable, but not as easy as the best shoulder-season windows.

Weather is mixed enough that departure timing still matters.

April

Avg high / low 47 / 31°F

Moisture 3.5 in rain

Rating Fair

Best departure

9 AM to 12 PM

Steady driving window

Temperatures are workable, but not as easy as the best shoulder-season windows.

Weather is mixed enough that departure timing still matters.

May

Avg high / low 55 / 39°F

Moisture 3.8 in rain

Rating Good

Best departure

8 AM to 11 AM

Steady driving window

Temperatures are workable, but not as easy as the best shoulder-season windows.

Weather is mixed enough that departure timing still matters.

June

Avg high / low 61 / 46°F

Moisture 3.6 in rain

Rating Great

Best departure

8 AM to 11 AM

Steady driving window

Temperatures are workable, but not as easy as the best shoulder-season windows.

Weather is mixed enough that departure timing still matters.

July

Avg high / low 64 / 49°F

Moisture 3.4 in rain

Rating Great

Best departure

8 AM to 11 AM

Holiday traffic

Daytime temperatures usually stay in a comfortable driving range.

Weather is mixed enough that departure timing still matters.

August

Avg high / low 63 / 48°F

Moisture 2.5 in rain

Rating Excellent

Best departure

8 AM to 11 AM

Steady driving window

Daytime temperatures usually stay in a comfortable driving range.

Weather is mixed enough that departure timing still matters.

September

Avg high / low 58 / 42°F

Moisture 2.5 in rain

Rating Great

Best departure

8 AM to 11 AM

Steady driving window

Temperatures are workable, but not as easy as the best shoulder-season windows.

Weather is mixed enough that departure timing still matters.

October

Avg high / low 49 / 33°F

Moisture 2.7 in rain

Rating Good

Best departure

9 AM to 12 PM

Steady driving window

Temperatures are workable, but not as easy as the best shoulder-season windows.

Weather is mixed enough that departure timing still matters.

November

Avg high / low 39 / 25°F

Moisture 2.8 in rain

Rating Challenging

Best departure

9 AM to 12 PM

Holiday traffic

Temperatures are workable, but not as easy as the best shoulder-season windows.

Weather is mixed enough that departure timing still matters.

December

Avg high / low 30 / 18°F

Moisture 2.4 in rain

Rating Challenging

Best departure

9 AM to 12 PM

Winter mix risk Holiday traffic

Temperatures are workable, but not as easy as the best shoulder-season windows.

Rain disruption is usually limited compared with wetter months.

Seasonal Hazards on This Route

Winter mix risk

Jan - Dec

Even light snow or freezing precipitation can matter more than usual when this route turns into a same-day commitment.

Best Departure Time by Season

Spring

9 AM to 12 PM

Waiting for a little daylight and warmer pavement usually makes the drive easier.

Summer

8 AM to 11 AM

Mid-morning is usually the steadiest all-around departure window.

Fall

9 AM to 12 PM

Waiting for a little daylight and warmer pavement usually makes the drive easier.

Winter

9 AM to 12 PM

Waiting for a little daylight and warmer pavement usually makes the drive easier.

How This Score Was Built

Source

Route-sampled NOAA climate normals

High confidence. Built from 4 NOAA-backed route checkpoints rather than a single statewide estimate.

Origin zone

Midwest

Destination zone

Midwest

Route sample points

Late route

Late route checkpoint

IL CAIRO 3N (2.6 mi away)

Late route

Late route checkpoint

IL KINMUNDY (5.8 mi away)

Late route

Late route checkpoint

IL KANKAKEE WWTP (4.7 mi away)

Destination

Waukegan, IL

IL WAUKEGAN (2.2 mi away)

Ready to plan? See the full trip plan from Cairo, IL to Waukegan, IL with stops, fuel costs, and directions.

Considering flying instead? Compare driving vs flying for this route.