Best time to visit Castlewood, SD

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

The most comfortable travel window in Castlewood runs from May through September — 5 months of pleasant temperatures and modest rainfall.

January Cold
High
21.5°F
Low
2.5°F
Precip
0.52 in

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

Daylight ≈ 8h 59m

February Cold
High
26.2°F
Low
5.9°F
Precip
0.58 in

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

Daylight ≈ 10h 12m

March Cold
High
38.7°F
Low
17.8°F
Precip
1.12 in

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

Daylight ≈ 11h 41m

April Cool
High
54.1°F
Low
29.6°F
Precip
2.13 in

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

Daylight ≈ 13h 16m

May Good
High
67.3°F
Low
43.6°F
Precip
3.18 in

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

Daylight ≈ 14h 38m

June Excellent
High
77.5°F
Low
54.2°F
Precip
3.97 in

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

Daylight ≈ 15h 20m

July Good
High
82.5°F
Low
58.5°F
Precip
3.49 in

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

Daylight ≈ 15h 4m

August Good
High
80.5°F
Low
56.1°F
Precip
3.08 in

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

Daylight ≈ 13h 52m

September Good
High
72.4°F
Low
47.3°F
Precip
2.69 in

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

Daylight ≈ 12h 18m

October Cool
High
57.8°F
Low
33.7°F
Precip
2.28 in

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

Daylight ≈ 10h 43m

November Cold
High
41.0°F
Low
20.7°F
Precip
0.76 in

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

Daylight ≈ 9h 19m

December Cold
High
26.9°F
Low
8.7°F
Precip
0.53 in

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

Daylight ≈ 8h 38m

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