Last updated: June 24, 2025
In Portage, United States, the average temperature in December hovers around 0°C (33°F). Expect a chilly minimum of -25°C (-13°F), while the mercury can rise to a maximum of 17°C (62°F). With an average precipitation of 65 mm (2.6 in) spread over 11 days, and a humid atmosphere at 86%, be sure to pack wisely for your visit!
In December in Portage, average temperature is 0°C (33°F). Maximum can reach 17°C (62°F) and minimum can be as low as -25°C (-13°F). Travelers should be prepared for a wide range of temperatures, from chilly conditions to the possibility of warmer days.
In Portage in December, the precipitation amount is 65 mm (2.6 in) over a span of 11 days.
In Portage in December humidity is 86%. With an average temperature of 0°C (33°F), this humidity feels like a damp chill that permeates your clothes, making traveling uncomfortable and necessitating warm, layered clothing to stay dry and cozy.
In Portage in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Portage, you can visit Hourly UV Index in Portage.
UV Risk Categories
Weather in Portage varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Portage, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (27°F) | 72 mm (2.8 inches) | 87% | moderate |
| February Weather | -3°C (28°F) | 75 mm (3.0 inches) | 87% | moderate |
| March Weather | 3°C (38°F) | 86 mm (3.4 inches) | 86% | high |
| April Weather | 8°C (47°F) | 97 mm (3.8 inches) | 87% | very high |
| May Weather | 15°C (60°F) | 151 mm (5.9 inches) | 82% | very high |
| June Weather | 21°C (71°F) | 120 mm (4.7 inches) | 81% | very high |
| July Weather | 24°C (75°F) | 109 mm (4.3 inches) | 78% | very high |
| August Weather | 22°C (72°F) | 81 mm (3.2 inches) | 79% | very high |
| September Weather | 19°C (66°F) | 94 mm (3.7 inches) | 79% | high |
| October Weather | 12°C (54°F) | 137 mm (5.4 inches) | 82% | moderate |
| November Weather | 4°C (39°F) | 72 mm (2.8 inches) | 87% | moderate |
| December Weather | 0°C (33°F) | 65 mm (2.6 inches) | 86% | low |