Last updated: June 24, 2025
In December, the average temperature in Sheridan, United States hovers around -1°C (31°F), with a minimum plunge of -27°C (-17°F) and a maximum reaching up to 16°C (61°F). Visitors can expect 65 mm (2.6 in) of precipitation spread over approximately 10 days, while the air maintains a notable average humidity of 86%.
In December in Sheridan, the average temperature is -1°C (31°F), with maximums reaching 16°C (61°F) and minimums dipping as low as -27°C (-17°F). Travelers should be prepared for a wide temperature range and pack accordingly for varying weather conditions.
In Sheridan in December, the precipitation amount is 65 mm (2.6 in) over a span of 10 days.
In Sheridan in December humidity is 86%. With an average temperature of -1°C (31°F), this humidity feels like an eerie chill enveloping you, making travel uncomfortable as the damp air bites into your skin and the cold seeps through even the warmest of clothes, creating an atmosphere that is heavy and uninviting.
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) | 60 mm (2.4 inches) | 87% | low |
| February Weather | -4°C (26°F) | 63 mm (2.5 inches) | 87% | moderate |
| March Weather | 2°C (36°F) | 62 mm (2.4 inches) | 86% | moderate |
| April Weather | 8°C (46°F) | 89 mm (3.5 inches) | 87% | very high |
| May Weather | 15°C (59°F) | 124 mm (4.9 inches) | 82% | very high |
| June Weather | 21°C (69°F) | 122 mm (4.8 inches) | 81% | very high |
| July Weather | 24°C (75°F) | 63 mm (2.5 inches) | 78% | very high |
| August Weather | 22°C (72°F) | 70 mm (2.8 inches) | 79% | very high |
| September Weather | 18°C (64°F) | 113 mm (4.5 inches) | 79% | high |
| October Weather | 11°C (52°F) | 126 mm (5.0 inches) | 82% | moderate |
| November Weather | 3°C (38°F) | 59 mm (2.3 inches) | 87% | moderate |
| December Weather | -1°C (31°F) | 65 mm (2.6 inches) | 86% | low |