Last updated: June 24, 2025
In Walthill, United States, the average temperature in December hovers around -2°C (29°F). However, temperatures can vary significantly, dipping as low as -22°C (-8°F) and occasionally peaking at 20°C (68°F). During this month, the region experiences approximately 43 mm (1.7 in) of precipitation over 4 days, coupled with a high average humidity of 83%. Prepare accordingly!
In December in Walthill, the average temperature is -2°C (29°F), with maximums reaching 20°C (68°F) and minimums dropping as low as -22°C (-8°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both chilly and unexpectedly warm days.
In Walthill in December, the precipitation amount is 43 mm (1.7 in) over the course of 4 days.
In Walthill 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 Walthill 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 Walthill, you can visit Hourly UV Index in Walthill.
UV Risk Categories
Weather in Walthill varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Walthill, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (23°F) | 29 mm (1.1 inches) | 80% | moderate |
| February Weather | -5°C (23°F) | 30 mm (1.2 inches) | 84% | moderate |
| March Weather | 4°C (39°F) | 84 mm (3.3 inches) | 75% | moderate |
| April Weather | 9°C (48°F) | 74 mm (2.9 inches) | 79% | very high |
| May Weather | 16°C (61°F) | 143 mm (5.6 inches) | 74% | very high |
| June Weather | 24°C (75°F) | 111 mm (4.4 inches) | 81% | extreme |
| July Weather | 25°C (77°F) | 64 mm (2.5 inches) | 82% | very high |
| August Weather | 23°C (73°F) | 113 mm (4.5 inches) | 80% | very high |
| September Weather | 20°C (68°F) | 91 mm (3.6 inches) | 75% | very high |
| October Weather | 10°C (51°F) | 78 mm (3.1 inches) | 77% | moderate |
| November Weather | 3°C (38°F) | 27 mm (1.0 inches) | 85% | moderate |
| December Weather | -2°C (29°F) | 43 mm (1.7 inches) | 83% | low |