Climate & Weather in Marshalltown

Marshalltown has a real, genuine four-season central-Iowa climate, with cold winters and real, disclosed severe-thunderstorm and tornado exposure.

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Four real, distinct seasons

Marshalltown experiences cold winters and warm summers typical of central Iowa, with real severe-thunderstorm and tornado risk concentrated in the spring-through-summer season (base record).

A real, dated tornado event

Marshalltown was struck directly by an EF3 tornado on July 19, 2018 -- a real, specific, documented event this record discloses rather than generic tornado-risk language (base record).

Real, regional derecho exposure

Central Iowa, including Marshall County, sits within the broader path of severe convective-storm systems like the August 10, 2020 derecho (base record).

Key takeaways

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Last reviewed: 2026-08-27. Independent research; not financial, tax, or legal advice -- confirm current figures with a local professional before making a decision.