Best time to visit Cave-In-Rock, IL

A month-by-month travel weather guide based on NOAA 30-year climate normals.

The most comfortable travel window in Cave-In-Rock runs from June through October — 5 months of pleasant temperatures and modest rainfall.

January Cold
High
41.2°F
Low
22.4°F
Precip
3.90 in

Winter weather. Plan around weather; good for snow sports if applicable.

Daylight ≈ 9h 41m

February Cool
High
46.2°F
Low
25.1°F
Precip
3.71 in

Mild but on the chilly side. Pack a jacket; great for hiking and city walks.

Daylight ≈ 10h 37m

March Wet
High
56.3°F
Low
33.3°F
Precip
5.08 in

Frequent rain. Bring waterproof gear; outdoor plans need flexibility.

Daylight ≈ 11h 45m

April Wet
High
67.6°F
Low
42.6°F
Precip
5.12 in

Frequent rain. Bring waterproof gear; outdoor plans need flexibility.

Daylight ≈ 12h 58m

May Wet
High
75.2°F
Low
52.6°F
Precip
5.35 in

Frequent rain. Bring waterproof gear; outdoor plans need flexibility.

Daylight ≈ 14h 1m

June Good
High
83.0°F
Low
61.5°F
Precip
4.61 in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 14h 33m

July Good
High
86.4°F
Low
65.2°F
Precip
4.40 in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 14h 21m

August Good
High
86.1°F
Low
63.0°F
Precip
3.24 in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 13h 27m

September Good
High
80.4°F
Low
55.1°F
Precip
3.24 in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 12h 14m

October Good
High
69.2°F
Low
42.9°F
Precip
3.57 in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 11h 0m

November Cool
High
55.9°F
Low
33.4°F
Precip
4.23 in

Mild but on the chilly side. Pack a jacket; great for hiking and city walks.

Daylight ≈ 9h 57m

December Cool
High
45.2°F
Low
26.3°F
Precip
4.44 in

Mild but on the chilly side. Pack a jacket; great for hiking and city walks.

Daylight ≈ 9h 26m

Looking for similar climates? See Cave-In-Rock's climate twins. Or jump straight to the full climate profile.