Iowa's Coldest Mays Since 1895: Historical Weather Data
Iowa's Coldest Mays Since 1895: Historical Weather Data
US · Published May 11, 2026
A ranking of Iowa's coldest Mays since 1895 has been compiled using data from the National Centers for Environmental Information.
The analysis highlights the lowest average temperatures recorded in May across the state, with the coldest being May 1907, which had an average temperature of 52.7°F (11.5°C).
Other notable years include May 1924, May 1935, and May 1997, all of which experienced average temperatures below 55°F (12.8°C).

Why It's Important?

The historical data underscores the variability of spring weather in Iowa, with colder-than-average Mays potentially impacting agriculture, outdoor activities, and energy consumption. Farmers and residents may need to adapt to cooler conditions during planting seasons, while colder temperatures can also influence heating needs and utility costs.

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