Des Moines, Iowa, United States climate
Average temperatures, precipitation and all-time records for Des Moines, Iowa, United States, with every day graded against ~45 years of local climate history (1981–2026). Its warmest month is July, averaging a high of 86°F, and its coldest is January, with an average low of 13°F.
How today compares
Latest recorded day: 2026-07-21. Each reading placed on Des Moines, Iowa, United States's own ±7-day seasonal distribution.
Des Moines average temperatures by month
Typical daily high and low, and average precipitation, for each month in Des Moines, Iowa, United States, based on 1981–2026 records. The wettest month is June (0.20 in on an average day).
| Month | Avg high | Avg low | Avg precip |
|---|---|---|---|
| January | 29°F | 13°F | 0.00 in |
| February | 37°F | 17°F | 0.00 in |
| March | 50°F | 28°F | 0.10 in |
| April | 62°F | 38°F | 0.10 in |
| May | 72°F | 50°F | 0.10 in |
| June | 82°F | 62°F | 0.20 in |
| July | 86°F | 66°F | 0.20 in |
| August | 85°F | 63°F | 0.10 in |
| September | 78°F | 55°F | 0.10 in |
| October | 64°F | 42°F | 0.10 in |
| November | 48°F | 30°F | 0.10 in |
| December | 34°F | 18°F | 0.00 in |
Each bar spans the 10th-percentile daily low to the 90th-percentile daily high (the range most days fall within), coloured cold → hot on a shared -10°F to 115°F scale, so the whole year's rhythm reads at a glance.
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Record extremes
- Hottest day on record: 109°F on 2012-07-23
- Coldest day on record: -33°F on 1982-01-10
Percentiles compare each day to Des Moines, Iowa, United States's own history, so grades are relative to this location: a “Near Record” day here isn't the same temperature as elsewhere. How the grades work →