Iowa May Weather

Iowa weather averages and all-time records in the month of May from 1991–2020 based on data made available by the NOAA.

State:

Month:

Iowa Cities

May weather averages for various places in Iowa, from 1991–2020.

City	Average (°F)		Record (°F)		Monthly (inches)
City	High	Low	High	Low	Precipitation	Snow
Ames	71.9	49.9	104	18	5.1	n/a
Burlington	73.6	53.1	103	26	4.9	n/a
Carroll	71.3	48.6	107	18	4.5	0.0
Cedar Rapids	73.4	50.5	104	24	4.8	0.0
Davenport	73.5	51.0	103	25	4.7	0.0
Des Moines	72.5	52.6	106	21	5.2	0.2
Dubuque	69.3	48.7	95	21	4.3	0.0
Fort Madison	72.7	54.5	95	22	5.1	0.0
Iowa City	73.1	51.5	105	24	4.6	n/a
Iowa Falls	70.4	47.5	107	18	5.5	0.0
Lamoni	72.3	51.9	102	25	5.7	0.0
Mason City	69.8	47.0	104	22	5.1	0.3
Northwood	67.2	45.9	105	20	5.0	0.0
Ottumwa	72.1	51.6	103	24	5.1	n/a
Rockwell City	69.9	48.5	106	17	5.0	0.2
Sac City	70.2	47.5	108	23	4.3	0.2
Sioux City	72.9	49.1	106	25	3.9	0.0
Spirit Lake	68.9	49.1	100	26	4.3	0.1
Waterloo	71.6	48.9	108	22	4.6	0.1
Webster City	70.8	47.5	107	17	5.3	0.2