Des Moines, Sunday, 9 August, 10:16
Clear. Feels like 91°. High 98°, low 71°.
In December, Des Moines, IA averages a high of 34.5° and a low of 20.1°. About 1.6 inches of precipitation fall over the month (6 wet days). The record high is 71.6° (2021) and the record low -28.5° (1989). Normals are computed over the last 60 years.
| Day | High | Low | Chance of precip. | Record high | Record low |
|---|---|---|---|---|---|
| 1 | 39.2° | 25.9° | 23% | 61.9° (1998) | 4.6° (1985) |
| 2 | 39.9° | 25.5° | 22% | 62.4° (1973) | -6.5° (1985) |
| 3 | 38.5° | 23.4° | 18% | 67.1° (2012) | -10.8° (1985) |
| 4 | 37.9° | 23.7° | 17% | 69.4° (2017) | -7.6° (2025) |
| 5 | 38.5° | 23.9° | 20% | 65.1° (1975) | 2.7° (2005) |
| 6 | 35.2° | 22.1° | 23% | 55.8° (1998) | -4.7° (1972) |
| 7 | 34.5° | 20.7° | 25% | 58.6° (2023) | -13° (1972) |
| 8 | 34.7° | 21.2° | 22% | 55.2° (2023) | -2.6° (1976) |
| 9 | 35.4° | 20.7° | 20% | 54.3° (2015) | -7.2° (1978) |
| 10 | 34.3° | 19.2° | 17% | 57.4° (1979) | -11.2° (1978) |
| 11 | 34.3° | 19.8° | 23% | 60.8° (1965) | -10.1° (1972) |
| 12 | 35.1° | 20.7° | 15% | 58.6° (1968) | -15.2° (2000) |
| 13 | 35.6° | 20.8° | 27% | 60.3° (2015) | -14.1° (2000) |
| 14 | 35.6° | 21° | 28% | 58.3° (1975) | -13.5° (1985) |
| 15 | 35.4° | 22.1° | 30% | 71.6° (2021) | -8.1° (1963) |
| 16 | 34.7° | 19.9° | 17% | 57.2° (2006) | -8.3° (1963) |
| 17 | 32.5° | 18.1° | 13% | 52.2° (1980) | -11.6° (1972) |
| 18 | 33.3° | 19.2° | 18% | 56.7° (1976) | -19.7° (1983) |
| 19 | 33.4° | 18.5° | 15% | 53.1° (2018) | -24.7° (1983) |
| 20 | 32.9° | 18.5° | 23% | 57° (1967) | -18.2° (1983) |
| 21 | 32.7° | 18.3° | 18% | 56.8° (1967) | -19.5° (1963) |
| 22 | 33.1° | 18.5° | 20% | 52.7° (2023) | -20° (1983) |
| 23 | 32° | 18° | 18% | 57.6° (1965) | -28.5° (1989) |
| 24 | 31.1° | 16.7° | 28% | 57.7° (1982) | -25.1° (1983) |
| 25 | 31.8° | 16.7° | 12% | 58.3° (2019) | -20.6° (1983) |
| 26 | 32.7° | 18.3° | 15% | 57.9° (2016) | -12.6° (1983) |
| 27 | 34.3° | 19.6° | 23% | 59° (2008) | -7.6° (2022) |
| 28 | 35.2° | 21.2° | 30% | 66° (1984) | -6.3° (1961) |
| 29 | 32.4° | 18.3° | 15% | 63.5° (1984) | -8.7° (1983) |
| 30 | 32.7° | 16.9° | 25% | 61.9° (2004) | -9.2° (1983) |
| 31 | 29.7° | 15.3° | 18% | 61.7° (1965) | -15.7° (1968) |