Best time to visit Geneseo, IL

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

The most comfortable travel window in Geneseo runs from April through October — 7 months of pleasant temperatures and modest rainfall.

January Cold
High
30.8°F
Low
14.6°F
Precip
1.64 in

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

Daylight ≈ 9h 19m

February Cold
High
35.7°F
Low
18.6°F
Precip
1.81 in

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

Daylight ≈ 10h 24m

March Cool
High
48.9°F
Low
29.3°F
Precip
2.70 in

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

Daylight ≈ 11h 43m

April Good
High
62.2°F
Low
39.9°F
Precip
3.96 in

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

Daylight ≈ 13h 7m

May Good
High
73.7°F
Low
51.6°F
Precip
4.87 in

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

Daylight ≈ 14h 20m

June Good
High
82.8°F
Low
61.5°F
Precip
4.42 in

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

Daylight ≈ 14h 57m

July Good
High
85.7°F
Low
65.1°F
Precip
4.13 in

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

Daylight ≈ 14h 43m

August Good
High
83.4°F
Low
62.9°F
Precip
4.10 in

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

Daylight ≈ 13h 40m

September Excellent
High
77.1°F
Low
54.5°F
Precip
3.57 in

Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.

Daylight ≈ 12h 16m

October Good
High
64.0°F
Low
42.9°F
Precip
3.21 in

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

Daylight ≈ 10h 51m

November Cool
High
48.8°F
Low
30.7°F
Precip
2.56 in

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

Daylight ≈ 9h 37m

December Cold
High
35.9°F
Low
20.5°F
Precip
2.12 in

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

Daylight ≈ 9h 1m

Looking for similar climates? See Geneseo's climate twins. Or jump straight to the full climate profile.