Last updated: June 24, 2025
In December, the average temperature in Des Moines, United States hovers around 0°C (31°F), with extremes ranging from a chilly -22°C (-8°F) to a warm 23°C (73°F). During this month, you can expect about 37 mm (1.4 in) of precipitation spread over 5 days, contributing to a notable average humidity of 83%. Stay prepared for a mix of wintry chill and occasional warmth!
In December in Des Moines, the average temperature is 0°C (31°F). Maximum temperatures can reach 23°C (73°F), while minimums can drop as low as -22°C (-8°F). Be prepared for a wide range of temperatures during your travels, and pack accordingly!
In Des Moines in December, the precipitation amount is 37 mm (1.4 in) spread over a duration of 5 days.
In Des Moines in December humidity is 83%. With an average temperature of 0°C (31°F), this humidity feels like a biting chill that penetrates layers of clothing, making even short excursions feel daunting and uncomfortable.
In Des Moines in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Des Moines, you can check the information here.
UV Risk Categories
Weather in Des Moines varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Des Moines, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (23°F) | 40 mm (1.6 inches) | 78% | moderate |
| February Weather | -4°C (24°F) | 41 mm (1.6 inches) | 80% | moderate |
| March Weather | 4°C (40°F) | 83 mm (3.3 inches) | 77% | high |
| April Weather | 10°C (50°F) | 73 mm (2.9 inches) | 77% | very high |
| May Weather | 17°C (63°F) | 166 mm (6.5 inches) | 77% | very high |
| June Weather | 24°C (75°F) | 125 mm (4.9 inches) | 81% | extreme |
| July Weather | 25°C (78°F) | 69 mm (2.7 inches) | 81% | very high |
| August Weather | 24°C (75°F) | 76 mm (3.0 inches) | 77% | very high |
| September Weather | 20°C (69°F) | 118 mm (4.6 inches) | 73% | very high |
| October Weather | 12°C (53°F) | 131 mm (5.2 inches) | 75% | high |
| November Weather | 4°C (39°F) | 42 mm (1.6 inches) | 85% | moderate |
| December Weather | 0°C (31°F) | 37 mm (1.4 inches) | 83% | moderate |