Last updated: June 24, 2025
In Tomah, United States, the average temperature in December hovers around -3°C (27°F). During this time, temperatures can plunge to a chilling -24°C (-11°F), while soaring to a maximum of 17°C (63°F). Expect about 45 mm (1.8 in) of precipitation over 7 days, accompanied by an average humidity of 82%. Prepare accordingly for this diverse weather!
In December in Tomah, the average temperature is -3°C (27°F), with maximums reaching up to 17°C (63°F) and minimums dropping as low as -24°C (-11°F). Be sure to pack layers and prepare for a wide range of temperatures if you're planning to visit during this time.
In Tomah in December, the precipitation amount is 45 mm (1.8 in) spread over a duration of 7 days.
In Tomah in December, humidity is 82%. With an average temperature of -3°C (27°F), this humidity feels like a biting chill that seeps into your bones, making traveling uncomfortable and necessitating extra layers to stay warm while navigating through the damp air.
In Tomah 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 Tomah, you can visit Hourly UV Index in Tomah.
UV Risk Categories
Weather in Tomah varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Tomah, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -7°C (19°F) | 37 mm (1.5 inches) | 84% | low |
| February Weather | -6°C (21°F) | 53 mm (2.1 inches) | 85% | moderate |
| March Weather | 1°C (35°F) | 59 mm (2.3 inches) | 84% | moderate |
| April Weather | 7°C (45°F) | 89 mm (3.5 inches) | 83% | very high |
| May Weather | 15°C (59°F) | 134 mm (5.3 inches) | 75% | very high |
| June Weather | 21°C (70°F) | 116 mm (4.6 inches) | 79% | very high |
| July Weather | 23°C (74°F) | 101 mm (4.0 inches) | 75% | very high |
| August Weather | 21°C (70°F) | 112 mm (4.4 inches) | 69% | very high |
| September Weather | 18°C (64°F) | 106 mm (4.2 inches) | 74% | high |
| October Weather | 10°C (50°F) | 106 mm (4.2 inches) | 79% | moderate |
| November Weather | 2°C (35°F) | 51 mm (2.0 inches) | 88% | moderate |
| December Weather | -3°C (27°F) | 45 mm (1.8 inches) | 82% | low |