Best time to visit Sussex, WI

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

The most comfortable travel window in Sussex runs from May through October — 6 months of pleasant temperatures and modest rainfall.

January Cold
High
27.6°F
Low
10.7°F
Precip
1.74 in

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

Daylight ≈ 9h 9m

February Cold
High
31.9°F
Low
13.4°F
Precip
1.85 in

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

Daylight ≈ 10h 18m

March Cold
High
43.4°F
Low
23.4°F
Precip
2.13 in

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

Daylight ≈ 11h 42m

April Cool
High
55.6°F
Low
33.8°F
Precip
3.85 in

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

Daylight ≈ 13h 12m

May Good
High
68.0°F
Low
45.4°F
Precip
4.13 in

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

Daylight ≈ 14h 29m

June Good
High
78.6°F
Low
54.4°F
Precip
4.65 in

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

Daylight ≈ 15h 8m

July Good
High
83.1°F
Low
60.4°F
Precip
4.18 in

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

Daylight ≈ 14h 53m

August Good
High
80.8°F
Low
59.1°F
Precip
3.69 in

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

Daylight ≈ 13h 46m

September Excellent
High
72.9°F
Low
51.0°F
Precip
3.30 in

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

Daylight ≈ 12h 17m

October Good
High
59.9°F
Low
39.8°F
Precip
2.93 in

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

Daylight ≈ 10h 47m

November Cold
High
44.8°F
Low
27.8°F
Precip
2.25 in

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

Daylight ≈ 9h 28m

December Cold
High
32.7°F
Low
17.5°F
Precip
2.10 in

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

Daylight ≈ 8h 49m

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