Last updated: June 24, 2025
In Ephraim, United States, the average temperature in December hovers around -5°C (23°F). Expect chilly extremes, with minimums plunging to -23°C (-9°F) and maximums reaching a mild 12°C (54°F). Rain is likely, with an average precipitation of 46 mm (1.8 in) spread over 9 days. The air is quite humid, with an average humidity of 87%, creating a crisp but invigorating atmosphere.
In December in Ephraim, the average temperature is -5°C (23°F). The maximum can reach 12°C (54°F), while the minimum can be as low as -23°C (-9°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for this chilly climate.
In Ephraim in December, the precipitation amount is 46 mm (1.8 in) over the course of 9 days.
In Ephraim in December humidity is 87%. With an average temperature of -5°C (23°F), this humidity feels like a heavy, damp blanket enveloping you, making even the cold air seem more biting and clammy, which can be quite uncomfortable for traveling.
In Ephraim in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Ephraim for better planning.
UV Risk Categories
Weather in Ephraim varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Ephraim, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (22°F) | 46 mm (1.8 inches) | 87% | moderate |
| February Weather | -4°C (25°F) | 50 mm (2.0 inches) | 88% | high |
| March Weather | 0°C (33°F) | 55 mm (2.2 inches) | 77% | very high |
| April Weather | 4°C (40°F) | 39 mm (1.5 inches) | 69% | extreme |
| May Weather | 10°C (50°F) | 54 mm (2.1 inches) | 54% | extreme |
| June Weather | 18°C (64°F) | 16 mm (0.6 inches) | 45% | extreme |
| July Weather | 22°C (71°F) | 26 mm (1.0 inches) | 37% | extreme |
| August Weather | 21°C (69°F) | 20 mm (0.8 inches) | 34% | extreme |
| September Weather | 15°C (60°F) | 27 mm (1.1 inches) | 47% | very high |
| October Weather | 6°C (42°F) | 34 mm (1.3 inches) | 67% | high |
| November Weather | 1°C (34°F) | 32 mm (1.2 inches) | 82% | high |
| December Weather | -5°C (23°F) | 46 mm (1.8 inches) | 87% | moderate |