Last updated: June 24, 2025
In Star Valley Ranch, United States, the average temperature in December hovers around -7°C (20°F). Expect chilly conditions, with minimum values plummeting to -21°C (-6°F) and a maximum of 7°C (45°F). This month sees an average precipitation of 80 mm (3.1 in) spread over 15 days, alongside a high humidity level of 91%. Embrace the frosty beauty!
In December in Star Valley Ranch, the average temperature is -7°C (20°F). Maximums can reach 7°C (45°F), and minimums can be as low as -21°C (-6°F). Travelers should prepare for extremely cold weather and pack warm clothing to stay comfortable during their visit.
In Star Valley Ranch in December, the precipitation amount is 80 mm (3.1 in) over a span of 15 days.
In Star Valley Ranch in December humidity is 91%. With an average temperature of -7°C (20°F), this humidity feels like an icy embrace that clings to your skin, making travel uncomfortable and challenging as every breath feels damp and heavy in the frigid air.
In Star Valley Ranch in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Star Valley Ranch, you can check the information here.
UV Risk Categories
Weather in Star Valley Ranch varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Star Valley Ranch, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (21°F) | 79 mm (3.1 inches) | 95% | moderate |
| February Weather | -6°C (22°F) | 120 mm (4.7 inches) | 95% | moderate |
| March Weather | -1°C (31°F) | 64 mm (2.5 inches) | 90% | very high |
| April Weather | 1°C (35°F) | 85 mm (3.4 inches) | 81% | very high |
| May Weather | 5°C (42°F) | 71 mm (2.8 inches) | 71% | extreme |
| June Weather | 13°C (55°F) | 45 mm (1.8 inches) | 64% | extreme |
| July Weather | 18°C (64°F) | 16 mm (0.6 inches) | 59% | extreme |
| August Weather | 17°C (62°F) | 28 mm (1.1 inches) | 49% | extreme |
| September Weather | 12°C (53°F) | 50 mm (2.0 inches) | 52% | very high |
| October Weather | 3°C (38°F) | 61 mm (2.4 inches) | 69% | high |
| November Weather | -3°C (27°F) | 77 mm (3.0 inches) | 86% | moderate |
| December Weather | -7°C (20°F) | 80 mm (3.1 inches) | 91% | moderate |