Last updated: March 2, 2024
The weather in City of Sammamish, United States, during December is characterized by an average temperature of 4°C (40°F). Highs can soar to 12°C (54°F), while lows may dip to -6°C (22°F). Typically, the humidity level in City of Sammamish throughout December hovers around 88%.
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Average temperature
Maximum temperature
Humidity
In December, City of Sammamish averages 235 mm (9.3 inches) of rainfall, typically over the course of 20 rainy days. The month enjoys an average of 8 hours 29 minutes of daylight, with the sun shining for approximately 2 hours 51 minutes each day. Additionally, there is a 11% probability of sunny days during this period.
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In December, the UV Index in City of Sammamish reaches a maximum of 2, indicating a level of Low exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, 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 | 2 | 1 | 1 | 1 | 1 | 0 | 0 | 0 |
| Exposure | Low | ||||||||||||
| Time to burn | 45 min | ||||||||||||