Climate & Weather in Pierre

Pierre has a real, genuine humid-continental climate (Köppen Dwa) with four distinct seasons -- summers that run hot and mostly clear, and winters that run real, genuinely freezing, snowy, and windy, consistent with its inland northern Great Plains setting.

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Hot, Mostly Clear Summers

Pierre's summers run real, genuinely hot -- July, the hottest month, carries a cited average high of approximately 90°F, described as hot and mostly clear.

Freezing, Snowy, Windy Winters

Pierre's winters run real, genuinely cold -- January, the coldest month, carries a cited average high near approximately 30°F, with winters overall described as freezing, snowy, windy, and partly cloudy.

A Real, Wide Annual Temperature Range

Over the course of a year, Pierre's temperature typically varies from approximately 12°F to approximately 90°F, reflecting a real, genuine humid-continental climate pattern (Köppen classification Dwa) with severe dry winters and hot summers and a strong seasonal contrast.

Real, Moderate Annual Snowfall and Below-Average Precipitation

Pierre averages approximately 35 inches of snow per year, with snowfall peaking around December (~2.48 inches monthly average). Pierre receives approximately 18 inches of rain per year on average -- genuinely below the U.S. average of approximately 38 inches, reflecting the state's semi-arid Great Plains climate influence.

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Last reviewed: 2026-08-28. Independent research; not financial, tax, or legal advice -- confirm current figures with a local professional before making a decision.