Last updated: June 24, 2025
In Rockwell City, United States, the average temperature in December hovers around -2°C (29°F), with dramatic fluctuations ranging from a chilling -23°C (-9°F) to a surprisingly warm 21°C (70°F). Expect approximately 38 mm (1.5 in) of precipitation spread over 4 days, contributing to an average humidity level of 83%.
In December in Rockwell City, the average temperature is -2°C (29°F), with maximums reaching 21°C (70°F) and minimums dropping as low as -23°C (-9°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.
In Rockwell City in December, the total precipitation amount is 38 mm (1.5 in) spread over the course of 4 days.
In Rockwell City in December, humidity is 83%. With an average temperature of -2°C (29°F), this humidity feels like a biting chill that seeps into your bones, making travel outside feel particularly uncomfortable and brisk, as the damp air enhances the cold sensation, leaving you longing for warmth and shelter.
In Rockwell City 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 Rockwell City, you can check the information here.
UV Risk Categories
Weather in Rockwell City varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Rockwell City, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (21°F) | 28 mm (1.1 inches) | 82% | moderate |
| February Weather | -6°C (21°F) | 43 mm (1.7 inches) | 84% | moderate |
| March Weather | 3°C (38°F) | 76 mm (3.0 inches) | 80% | moderate |
| April Weather | 8°C (47°F) | 72 mm (2.8 inches) | 81% | very high |
| May Weather | 16°C (61°F) | 152 mm (6.0 inches) | 74% | very high |
| June Weather | 23°C (74°F) | 118 mm (4.6 inches) | 80% | extreme |
| July Weather | 24°C (76°F) | 76 mm (3.0 inches) | 80% | very high |
| August Weather | 22°C (72°F) | 113 mm (4.5 inches) | 77% | very high |
| September Weather | 19°C (67°F) | 105 mm (4.1 inches) | 75% | very high |
| October Weather | 10°C (51°F) | 111 mm (4.4 inches) | 80% | high |
| November Weather | 3°C (37°F) | 36 mm (1.4 inches) | 87% | moderate |
| December Weather | -2°C (29°F) | 38 mm (1.5 inches) | 83% | moderate |