Best time to visit Roslyn, SD

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

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

January Cold
High
21.7°F
Low
3.5°F
Precip
0.60 in

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

Daylight ≈ 8h 53m

February Cold
High
26.4°F
Low
7.0°F
Precip
0.54 in

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

Daylight ≈ 10h 9m

March Cold
High
38.7°F
Low
19.2°F
Precip
0.84 in

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

Daylight ≈ 11h 40m

April Cool
High
54.0°F
Low
32.8°F
Precip
1.96 in

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

Daylight ≈ 13h 18m

May Good
High
67.6°F
Low
46.6°F
Precip
2.93 in

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

Daylight ≈ 14h 42m

June Excellent
High
76.8°F
Low
57.6°F
Precip
3.69 in

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

Daylight ≈ 15h 26m

July Good
High
81.7°F
Low
62.2°F
Precip
3.79 in

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

Daylight ≈ 15h 9m

August Good
High
80.5°F
Low
60.8°F
Precip
2.26 in

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

Daylight ≈ 13h 56m

September Excellent
High
72.6°F
Low
52.0°F
Precip
2.39 in

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

Daylight ≈ 12h 18m

October Good
High
57.0°F
Low
38.4°F
Precip
2.17 in

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

Daylight ≈ 10h 41m

November Cold
High
39.9°F
Low
23.9°F
Precip
0.69 in

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

Daylight ≈ 9h 14m

December Cold
High
26.5°F
Low
10.5°F
Precip
0.66 in

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

Daylight ≈ 8h 32m

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