Best time to visit Vermillion, SD

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

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

January Cold
High
30.5°F
Low
10.2°F
Precip
0.53 in

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

Daylight ≈ 9h 11m

February Cold
High
36.1°F
Low
14.0°F
Precip
0.70 in

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

Daylight ≈ 10h 19m

March Cool
High
48.4°F
Low
25.2°F
Precip
1.42 in

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

Daylight ≈ 11h 42m

April Cool
High
61.9°F
Low
36.0°F
Precip
3.09 in

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

Daylight ≈ 13h 11m

May Good
High
72.7°F
Low
48.1°F
Precip
3.96 in

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

Daylight ≈ 14h 27m

June Good
High
82.2°F
Low
59.1°F
Precip
4.30 in

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

Daylight ≈ 15h 6m

July Good
High
85.5°F
Low
63.2°F
Precip
3.61 in

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

Daylight ≈ 14h 51m

August Good
High
83.3°F
Low
60.7°F
Precip
2.88 in

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

Daylight ≈ 13h 45m

September Excellent
High
78.1°F
Low
51.8°F
Precip
3.07 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
64.6°F
Low
38.5°F
Precip
2.35 in

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

Daylight ≈ 10h 48m

November Cool
High
48.2°F
Low
25.2°F
Precip
1.30 in

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

Daylight ≈ 9h 30m

December Cold
High
34.0°F
Low
14.6°F
Precip
0.79 in

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

Daylight ≈ 8h 52m

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