Last updated: June 24, 2025
In December, the average temperature in Robert Lee, United States hovers around 10°C (50°F). You'll experience a range from a chilly -5°C (24°F) to a warm 30°C (86°F), so be prepared for weather fluctuations. Expect about 25 mm (1.0 in) of precipitation spread over 4 days, and be ready for the humidity, which averages a muggy 85%.
In December in Robert Lee, the average temperature is 10°C (50°F). Maximums can reach 30°C (86°F), while minimums can dip as low as -5°C (24°F). Be prepared for a wide range of temperatures during your travels!
In Robert Lee in December, the precipitation amount is 25 mm (1.0 in) over the course of 4 days.
In Robert Lee in December, humidity is 85%. With an average temperature of 10°C (50°F), this humidity feels like a heavy, damp blanket surrounding you, making travel feel sluggish and uncomfortable as you navigate through the thick, moist air.
In Robert Lee 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 Robert Lee for better planning.
UV Risk Categories
Weather in Robert Lee varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Robert Lee, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 7°C (46°F) | 26 mm (1.0 inches) | 74% | moderate |
| February Weather | 9°C (48°F) | 23 mm (0.9 inches) | 74% | high |
| March Weather | 15°C (60°F) | 53 mm (2.1 inches) | 68% | very high |
| April Weather | 19°C (66°F) | 61 mm (2.4 inches) | 70% | extreme |
| May Weather | 24°C (75°F) | 80 mm (3.2 inches) | 77% | extreme |
| June Weather | 27°C (82°F) | 49 mm (1.9 inches) | 76% | extreme |
| July Weather | 29°C (85°F) | 23 mm (0.9 inches) | 66% | extreme |
| August Weather | 29°C (84°F) | 42 mm (1.6 inches) | 60% | extreme |
| September Weather | 25°C (77°F) | 61 mm (2.4 inches) | 67% | extreme |
| October Weather | 19°C (67°F) | 69 mm (2.7 inches) | 72% | very high |
| November Weather | 13°C (55°F) | 24 mm (0.9 inches) | 83% | high |
| December Weather | 10°C (50°F) | 25 mm (1.0 inches) | 85% | moderate |