Last updated: March 2, 2024
The weather in Killen, United States, during December is characterized by an average temperature of 9°C (48°F). Highs can soar to 21°C (71°F), while lows may dip to -5°C (24°F). Typically, the humidity level in Killen throughout December hovers around 88%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In December, Killen averages 145 mm (5.7 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 9 hours 51 minutes of daylight, with the sun shining for approximately 5 hours 50 minutes each day. Additionally, there is a 40% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In December, the UV Index in Killen reaches a maximum of 4, indicating a level of Moderate exposure. The most intense UV radiation typically occurs between 11:00 and 13:00, during which unprotected skin may burn in as little as 30 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 | 1 | 1 | 2 | 3 | 4 | 4 | 3 | 2 | 1 | 1 | 0 | 0 | 0 |
| Exposure | Low | Moderate | Low | ||||||||||
| Time to burn | 45 min | 30 min | 45 min | ||||||||||