Last updated: June 24, 2025
In El Valle de Arroyo Seco, United States, the average temperature in December hovers around 0°C (32°F). Expect a chill with minimums dipping to -23°C (-8°F) and highs reaching 17°C (62°F). Additionally, you might encounter 19 mm (0.7 in) of precipitation spread over 4 days, accompanied by an average humidity of 79%, making for a brisk and damp month.
In December in El Valle de Arroyo Seco, the average temperature is 0°C (32°F). Maximums can reach 17°C (62°F), and minimums can be as low as -23°C (-8°F). Be prepared for a wide range of temperatures if you plan to travel during this time.
In El Valle de Arroyo Seco in December, the precipitation amount is 19 mm (0.7 in) over the course of 4 days.
In El Valle de Arroyo Seco in December humidity is 79%. With an average temperature of 0°C (32°F), this humidity feels like a heavy blanket wrapping around you, making every step outside feel like a challenge while also leaving a chill that cuts through your bones—it's a reminder to dress warmly yet prepare for the dampness that clings to your clothes, making travel less comfortable and more of an adventure.
In El Valle de Arroyo Seco 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 El Valle de Arroyo Seco for better planning.
UV Risk Categories
Weather in El Valle de Arroyo Seco varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in El Valle de Arroyo Seco, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (29°F) | 24 mm (0.9 inches) | 78% | moderate |
| February Weather | 0°C (33°F) | 24 mm (0.9 inches) | 79% | very high |
| March Weather | 6°C (43°F) | 24 mm (1.0 inches) | 66% | very high |
| April Weather | 11°C (51°F) | 22 mm (0.9 inches) | 60% | extreme |
| May Weather | 16°C (60°F) | 18 mm (0.7 inches) | 57% | extreme |
| June Weather | 21°C (70°F) | 15 mm (0.6 inches) | 55% | extreme |
| July Weather | 22°C (73°F) | 34 mm (1.3 inches) | 56% | extreme |
| August Weather | 21°C (71°F) | 23 mm (0.9 inches) | 65% | extreme |
| September Weather | 18°C (65°F) | 27 mm (1.0 inches) | 72% | extreme |
| October Weather | 11°C (52°F) | 27 mm (1.1 inches) | 78% | very high |
| November Weather | 5°C (41°F) | 23 mm (0.9 inches) | 81% | high |
| December Weather | 0°C (32°F) | 19 mm (0.7 inches) | 79% | moderate |