May Rainfall and Precipitation in Iowa
Iowa Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Iowa - and find the best time to visit. See also: Iowa weather by month.
Best Places to Visit in Iowa in May
Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Iowa.
Monthly precipitation
0 mm (0 in) dry → 150 mm (5.9 in) wet
Marker color shows total monthly precipitation in May: pale blue is dry, deep blue is wet.
Iowa precipitation in May: frequently asked questions
How much rainfall does Iowa, the United States of America receive in May?
In May, West Des Moines typically receives significant rainfall, averaging around 106 mm (4.2 in). Expect a mix of wet and dry days with occasional showers.
How many days does it rain in Iowa, the United States of America in May?
On average, West Des Moines has about 12 days days of rain in May.
Is May part of the rainy season in Iowa, the United States of America?
No. May sits outside the typical rainy season in Iowa, the United States of America, so you can expect drier conditions overall.
What is the wettest city in May in Iowa, the United States of America?
Based on our records, Osceola receives the most rainfall in Iowa, the United States of America in May, averaging about 148 mm (5.8 in).
What is the driest city in May in Iowa, the United States of America?
In our records, Dyersville stands out as the driest city in Iowa, the United States of America for May, averaging just 97 mm (3.8 in).
Interested in more climate information?
We have much more information about the climate in Iowa.
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