What to pack for Illinois
Twelve lists, one per month, each built from ten years of weather for Illinois rather than from a season. Pick the month you are going.
January
34°F, 9 rain days
February
39°F, 8 rain days
March
52°F, 12 rain days
April
61°F, 12 rain days
May
72°F, 12 rain days
June
82°F, 11 rain days
July
84°F, 12 rain days
August
82°F, 10 rain days
September
79°F, 8 rain days
October
64°F, 9 rain days
November
50°F, 8 rain days
December
39°F, 8 rain days