Iowa weather by month
Average temperatures and rainfall across Iowa, based on 30 years of climate data.
Monthly climate (Des Moines)
| Month | High / Low | Rainfall | Wet days |
|---|---|---|---|
| Jan | 30° / 14° | 1.2 in | 6.3 |
| Feb | 35° / 18° | 1.5 in | 6.3 |
| Mar | 48° / 30° | 2.6 in | 8.8 |
| Apr | 61° / 41° | 4.2 in | 11.2 |
| May | 71° / 53° | 5.3 in | 13.6 |
| Jun | 81° / 63° | 4.9 in | 11.6 |
| Jul | 84° / 67° | 3.6 in | 9.4 |
| Aug | 82° / 64° | 3.7 in | 9.5 |
| Sep | 76° / 55° | 3.5 in | 8 |
| Oct | 63° / 43° | 2.8 in | 7.8 |
| Nov | 48° / 31° | 2.0 in | 6.8 |
| Dec | 35° / 20° | 1.6 in | 5.9 |
Cities in Iowa
- 1Des Moines23°–75°214kSep
- 2Cedar Rapids21°–73°130kSep
- 3Davenport23°–75°103kSep
- 4Sioux City21°–75°83kSep
- 5Iowa City21°–75°74kSep
- 6Waterloo19°–73°68kSep
- 7Ames21°–75°65kSep
- 8West Des Moines23°–75°64kSep
- 9Council Bluffs23°–77°63kSep
- 10Dubuque21°–73°59kSep
- 11Ankeny21°–75°57kSep
- 12Urbandale21°–75°44kSep
- 13Cedar Falls19°–73°41kSep
- 14Marion21°–73°37kSep
- 15Bettendorf23°–75°36kSep
- 16Marshalltown21°–73°28kSep
- 17Mason City18°–72°27kAug
- 18Clinton23°–75°26kSep
- 19Burlington25°–77°25kSep
- 20Fort Dodge19°–73°25kSep
- 21Ottumwa25°–75°25kSep
- 22Muscatine23°–75°24kSep
- 23Johnston21°–75°21kSep
- 24Coralville21°–75°21kSep
- 25Waukee23°–75°19kSep
- 26Altoona21°–75°17kSep
- 27North Liberty21°–75°16kSep
- 28Indianola23°–75°15kSep
- 29Clive23°–75°15kSep
- 30Newton21°–75°15kSep