Last updated: March 2, 2024
The weather in Mill Creek, United States, during December is characterized by an average temperature of 6°C (42°F). Highs can soar to 12°C (54°F), while lows may dip to -2°C (29°F). Typically, the humidity level in Mill Creek throughout December hovers around 88%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In December, Mill Creek averages 199 mm (7.8 inches) of rainfall, typically over the course of 18 rainy days. The month enjoys an average of 8 hours 26 minutes of daylight, with the sun shining for approximately 2 hours 59 minutes each day. Additionally, there is a 13% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In December, the UV Index in Mill Creek reaches a maximum of 1, indicating a level of Low exposure. The most intense UV radiation typically occurs between 08:00 and 10:00, during which unprotected skin may burn in as little as 45 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 |
| Exposure | Low | ||||||||||||
| Time to burn | 45 min | ||||||||||||