Last updated: June 24, 2025
In December, the average temperature in Gallatin Gateway, United States is a chilly -7°C (19°F), with extremes ranging from a brisk -27°C (-16°F) to a milder 10°C (51°F). Expect 42 mm (1.6 in) of precipitation over approximately 10 days, coupled with a high average humidity of 94%. Dress warmly and prepare for a frosty experience!
In December in Gallatin Gateway, the average temperature is -7°C (19°F). Temperatures can rise to a maximum of 10°C (51°F) and dip to a chilling minimum of -27°C (-16°F). Travelers should prepare for cold weather and pack appropriate winter gear to fully enjoy their visit.
In Gallatin Gateway in December, the precipitation amount is 42 mm (1.6 in) over the course of 10 days.
In Gallatin Gateway in December, humidity is 94%. With an average temperature of -7°C (19°F), this humidity feels like a biting chill that seeps through your layers, making travel uncomfortable and the air feel damp and heavy, as if every breath carries the weight of the cold moisture.
In Gallatin Gateway 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 Gallatin Gateway, you can visit Hourly UV Index in Gallatin Gateway.
UV Risk Categories
Weather in Gallatin Gateway varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Gallatin Gateway, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -7°C (19°F) | 34 mm (1.3 inches) | 93% | moderate |
| February Weather | -8°C (17°F) | 66 mm (2.6 inches) | 92% | moderate |
| March Weather | -3°C (28°F) | 54 mm (2.1 inches) | 89% | high |
| April Weather | 0°C (33°F) | 88 mm (3.5 inches) | 83% | very high |
| May Weather | 6°C (42°F) | 101 mm (4.0 inches) | 79% | extreme |
| June Weather | 12°C (54°F) | 107 mm (4.2 inches) | 76% | extreme |
| July Weather | 17°C (63°F) | 40 mm (1.6 inches) | 74% | very high |
| August Weather | 16°C (61°F) | 53 mm (2.1 inches) | 69% | very high |
| September Weather | 11°C (52°F) | 59 mm (2.3 inches) | 67% | very high |
| October Weather | 2°C (35°F) | 76 mm (3.0 inches) | 72% | high |
| November Weather | -3°C (26°F) | 54 mm (2.1 inches) | 89% | moderate |
| December Weather | -7°C (19°F) | 42 mm (1.6 inches) | 94% | low |