Last updated: June 24, 2025
In Atwater, United States, the average temperature in December hovers around 1°C (35°F). While you may experience a brisk chill with minimums dipping to -19°C (-2°F), there's also the chance to enjoy mild spells with maxima reaching 17°C (64°F). Expect 93 mm (3.6 in) of precipitation over about 11 days, contributing to an average humidity of 86%. Perfect weather for cozy indoors or gearing up for adventurous outings!
In December in Atwater, the average temperature is 1°C (35°F). The maximum can reach 17°C (64°F), and the minimum can be as low as -19°C (-2°F). Be sure to pack both warm and layers for your trip to Atwater during this chilly month.
In Atwater in December, the precipitation amount is 93 mm (3.6 in) over the course of 11 days.
In Atwater in December, humidity is 86%. With an average temperature of 1°C (35°F), this humidity feels like a biting chill that wraps around you, making outdoor exploration uncomfortable and requiring extra layers to stay warm while navigating the damp air.
In Atwater 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 Atwater, you can visit Hourly UV Index in Atwater.
UV Risk Categories
Weather in Atwater varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Atwater, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (29°F) | 87 mm (3.4 inches) | 88% | moderate |
| February Weather | 0°C (33°F) | 99 mm (3.9 inches) | 88% | moderate |
| March Weather | 4°C (40°F) | 103 mm (4.1 inches) | 87% | high |
| April Weather | 10°C (50°F) | 136 mm (5.3 inches) | 87% | very high |
| May Weather | 16°C (62°F) | 124 mm (4.9 inches) | 81% | very high |
| June Weather | 21°C (70°F) | 134 mm (5.3 inches) | 83% | very high |
| July Weather | 23°C (75°F) | 125 mm (4.9 inches) | 82% | very high |
| August Weather | 22°C (72°F) | 98 mm (3.9 inches) | 76% | very high |
| September Weather | 19°C (67°F) | 106 mm (4.2 inches) | 77% | very high |
| October Weather | 13°C (56°F) | 107 mm (4.2 inches) | 82% | high |
| November Weather | 5°C (41°F) | 93 mm (3.7 inches) | 89% | moderate |
| December Weather | 1°C (35°F) | 93 mm (3.6 inches) | 86% | low |