What is the best way to use the Iowa climate data?
Use the monthly high and low averages to compare county by season, then open the climate trends page for a month-by-month chart.
County count
99
Summer candidates
0
Winter candidates
0
Iowa Climate Summary
Seasonal climate context for search and comparison
Iowa includes 99 county records. The annual average high is 58.5℉ and the annual average low is 38.1℉ based on the monthly climate dataset.
July has the highest average high at 83.8℉, while January has the lowest average low at 10.9℉. This helps compare summer comfort and winter warmth without relying on a single daily weather snapshot.
Under the default summer filter, 0 county match the cooling criteria. Under the default winter filter, 0 county match the warm-winter criteria.
Iowa Monthly Temperature Charts
State / County Average high Average low
Jan
28.2℉
10.9℉
Feb
33.1℉
15.3℉
Mar
46.4℉
26.6℉
Apr
60.1℉
37.2℉
May
71.1℉
48.9℉
Jun
80.6℉
59.4℉
Jul
83.8℉
63.0℉
Aug
81.7℉
60.4℉
Sep
75.4℉
52.0℉
Oct
62.4℉
39.7℉
Nov
46.4℉
27.5℉
Dec
33.3℉
16.9℉
Summer candidates
Jun-Aug average high no higher than 78.8℉, scroll to view all 0
| County | Average high | Average low |
|---|---|---|
No matching counties | ||
Winter candidates
Dec-Feb average low no lower than 41.0℉, scroll to view all 0
| County | Average high | Average low |
|---|---|---|
No matching counties | ||
Iowa County Highlights
Rank counties by summer comfort, winter warmth, and seasonal stability
Coolest Summer
Howard County Average high 79.2℉ Mitchell County Average high 79.5℉ Worth County Average high 79.5℉ Winneshiek County Average high 79.7℉ Allamakee County Average high 79.9℉ Chickasaw County Average high 79.9℉ Winnebago County Average high 79.9℉ Clayton County Average high 80.1℉ Fayette County Average high 80.1℉ Cerro Gordo County Average high 80.2℉Warmest Winter
Lee County Average low 19.4℉ Des Moines County Average low 18.7℉ Davis County Average low 18.1℉ Van Buren County Average low 18.1℉ Fremont County Average low 18.0℉ Appanoose County Average low 17.8℉ Henry County Average low 17.8℉ Louisa County Average low 17.6℉ Wapello County Average low 17.6℉ Decatur County Average low 17.4℉Frequently Asked Questions
Short answers based on the same visible climate data.
What does the summer filter mean?
The default summer filter selects places where June, July, and August average highs are no higher than 78.8℉.
What does the winter filter mean?
The default winter filter selects places where December, January, and February average lows are no lower than 41.0℉.