Iowa August Weather

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

State:

Month:

Iowa Cities

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

City	Average (°F)		Record (°F)		Monthly (inches)
City	High	Low	High	Low	Precipitation
Ames	81.7	60.4	107	36	4.7
Burlington	84.1	64.2	110	41	3.8
Carroll	82.3	60.4	112	34	4.2
Cedar Rapids	83.0	62.0	108	37	4.5
Davenport	83.7	62.7	105	40	4.0
Des Moines	83.8	64.7	113	39	4.2
Dubuque	79.7	60.2	101	40	4.0
Fort Madison	84.3	66.4	104	42	3.8
Iowa City	83.6	63.2	108	38	4.0
Iowa Falls	80.7	59.4	108	31	4.5
Lamoni	85.0	64.2	113	40	4.6
Mason City	80.4	57.8	103	30	3.7
Northwood	77.6	58.1	103	35	4.0
Ottumwa	83.4	62.7	115	40	4.4
Rockwell City	80.7	60.5	110	36	4.4
Sac City	80.9	59.5	114	35	4.4
Sioux City	83.3	61.1	104	37	3.9
Spirit Lake	80.2	61.2	104	40	3.7
Waterloo	81.7	59.7	110	33	4.2
Webster City	81.3	58.8	109	34	4.9