Last updated: June 24, 2025
In December, the average temperature in Sandy, United States hovers around 1°C (33°F). Expect a chilly range, with minimums dipping to -16°C (4°F) and maximums reaching up to 17°C (63°F). The month brings about 105 mm (4.1 in) of precipitation spread over 14 days, coupled with a high average humidity of 88%. Stay warm and prepared for the wet conditions!
In December in Sandy, the average temperature is 1°C (33°F). Maximum temperatures can reach 17°C (63°F), while minimums can drop as low as -16°C (4°F). This diverse range of temperatures suggests that travelers should prepare for both chilly weather and mild conditions during their visit.
In Sandy in December, the precipitation amount is 105 mm (4.1 in) over the course of 14 days.
In Sandy in December humidity is 88%. With an average temperature of 1°C (33°F), this humidity feels like a damp chill wrapping around you, making it difficult to stay warm while traveling, as each breath carries a heavy, cold moisture that clings to your skin.
In Sandy 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 Sandy, you can visit Hourly UV Index in Sandy.
UV Risk Categories
Weather in Sandy varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sandy, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (28°F) | 93 mm (3.7 inches) | 89% | moderate |
| February Weather | -1°C (31°F) | 121 mm (4.8 inches) | 90% | moderate |
| March Weather | 3°C (38°F) | 101 mm (4.0 inches) | 89% | high |
| April Weather | 9°C (48°F) | 131 mm (5.1 inches) | 88% | very high |
| May Weather | 15°C (59°F) | 150 mm (5.9 inches) | 80% | very high |
| June Weather | 19°C (67°F) | 127 mm (5.0 inches) | 79% | very high |
| July Weather | 22°C (72°F) | 121 mm (4.8 inches) | 74% | very high |
| August Weather | 21°C (71°F) | 99 mm (3.9 inches) | 64% | very high |
| September Weather | 18°C (64°F) | 121 mm (4.8 inches) | 67% | very high |
| October Weather | 12°C (54°F) | 116 mm (4.6 inches) | 81% | high |
| November Weather | 4°C (39°F) | 94 mm (3.7 inches) | 89% | moderate |
| December Weather | 1°C (33°F) | 105 mm (4.1 inches) | 88% | low |