Badlands NP Weather & Climate

Climate

The park is windy. Summers are hot and winters are cold.

Winter begins in November, although blizzards in late-October may occur. High temperatures around 40° F (4.4° C) with lows below 0° F (-18° C) and high winds creating much lower windchill. Snow is likely and blizzards are possible.

March is difficult. Temperatures may fluctuate dramatically within a few hours. Blizzards are still possible, and so is 60° F (15.5° C) weather.
Spring begins in April. With snow melting and April rains, the park is very wet. The unpaved roads can be difficult or impossible to pass and trails may be slippery and unpleasant. Temperatures at night is typically below freezing. The park receives most of its rain between April and June. Showers may be brief or last for days.

July is hot and dry. Daytime temperatures can surpass 90° F (32° C).
August is the hottest when temperatures can break 100° F (38° C). Evenings are about 75° F (24° C).

In September the temperatures begin to cool off in the second half of the month.

October is much cooler although a few days may break 80° F (27° C).

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