Last updated: June 24, 2025
In Sheridan, United States, the average temperature in December hovers around 0°C (33°F). During this time, temperatures can range from a chilly -21°C (-6°F) to a mild 19°C (67°F). Expect about 53 mm (2.1 in) of precipitation spread over approximately 7 days, and keep in mind that the average humidity is quite high at 84%. Plan your activities accordingly!
In December in Sheridan, the average temperature is 0°C (33°F). The maximum can reach 19°C (67°F), and the minimum can be as low as -21°C (-6°F). Be prepared for a wide range of temperatures if you plan to travel during this time.
In Sheridan in December, the total precipitation amount is 53 mm (2.1 in) spread over a period of 7 days.
In Sheridan in December humidity is 84%. With average temperature 0°C (33°F), this humidity feels like a damp chill that seeps into your bones, making outdoor adventures less enjoyable and travel plans challenging.
In Sheridan 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 Sheridan, you can visit Hourly UV Index in Sheridan.
UV Risk Categories
Weather in Sheridan varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sheridan, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (25°F) | 62 mm (2.4 inches) | 82% | moderate |
| February Weather | -3°C (27°F) | 63 mm (2.5 inches) | 83% | moderate |
| March Weather | 4°C (40°F) | 90 mm (3.5 inches) | 84% | high |
| April Weather | 10°C (49°F) | 115 mm (4.5 inches) | 85% | very high |
| May Weather | 17°C (62°F) | 160 mm (6.3 inches) | 79% | very high |
| June Weather | 23°C (73°F) | 142 mm (5.6 inches) | 82% | very high |
| July Weather | 24°C (76°F) | 105 mm (4.1 inches) | 80% | very high |
| August Weather | 23°C (73°F) | 75 mm (2.9 inches) | 81% | very high |
| September Weather | 20°C (68°F) | 96 mm (3.8 inches) | 80% | very high |
| October Weather | 13°C (55°F) | 131 mm (5.2 inches) | 82% | high |
| November Weather | 4°C (39°F) | 56 mm (2.2 inches) | 88% | moderate |
| December Weather | 0°C (33°F) | 53 mm (2.1 inches) | 84% | low |