Last updated: June 24, 2025
In December, the average temperature in Storm Lake, United States hovers around -2°C (28°F), with fluctuations that can drop to a chilly -23°C (-10°F) or rise to a pleasant 20°C (68°F). Precipitation is relatively light, averaging 41 mm (1.6 in) over about 4 days, while the air maintains a high average humidity of 83%. Stay prepared for a mix of wintery conditions and moisture as you explore this captivating destination!
In December in Storm Lake, the average temperature is -2°C (28°F). Maximum temperatures can reach 20°C (68°F), while minimums can drop as low as -23°C (-10°F). Be prepared for a wide range of temperatures and pack accordingly for your trip!
In Storm Lake in December, the precipitation amount is 41 mm (1.6 in) over the course of 4 days.
In Storm Lake in December, humidity is 83%. With an average temperature of -2°C (28°F), this humidity feels like a biting chill that penetrates your clothes, making outdoor activities uncomfortable and travel challenging.
In Storm Lake 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 Storm Lake, you can check the information here.
UV Risk Categories
Weather in Storm Lake varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Storm Lake, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (21°F) | 26 mm (1.0 inches) | 80% | moderate |
| February Weather | -6°C (21°F) | 40 mm (1.6 inches) | 84% | moderate |
| March Weather | 3°C (37°F) | 71 mm (2.8 inches) | 75% | moderate |
| April Weather | 8°C (46°F) | 88 mm (3.5 inches) | 79% | very high |
| May Weather | 16°C (60°F) | 140 mm (5.5 inches) | 74% | very high |
| June Weather | 23°C (73°F) | 127 mm (5.0 inches) | 81% | extreme |
| July Weather | 24°C (76°F) | 66 mm (2.6 inches) | 82% | very high |
| August Weather | 22°C (72°F) | 108 mm (4.2 inches) | 80% | very high |
| September Weather | 19°C (67°F) | 105 mm (4.1 inches) | 75% | very high |
| October Weather | 10°C (50°F) | 96 mm (3.8 inches) | 77% | moderate |
| November Weather | 2°C (36°F) | 34 mm (1.3 inches) | 85% | moderate |
| December Weather | -2°C (28°F) | 41 mm (1.6 inches) | 83% | moderate |