Last updated: June 24, 2025
In Santa Teresa, United States, the average temperature in December hovers around 8°C (47°F). Temperatures can vary significantly, dipping to a chilly -6°C (22°F) at their lowest and soaring to a pleasant 23°C (74°F) at times. During this month, you can expect about 17 mm (0.7 in) of precipitation spread across 3 days, with an average humidity of 87%. Whether you prefer the crisp air or the warmer spells, there's something for everyone!
In December in Santa Teresa, the average temperature is 8°C (47°F). Maximums can reach 23°C (74°F), while minimums can drop as low as -6°C (22°F). It's advisable to pack layers for your travels to Santa Teresa during this time, as temperatures can vary significantly throughout the day.
In Santa Teresa in December, the precipitation amount is 17 mm (0.7 in) over the course of 3 days.
In Santa Teresa in December, humidity is 87%. With an average temperature of 8°C (47°F), this humidity feels like a damp chill that clings to your skin, making outdoor exploration uncomfortably muggy despite the cool air.
In Santa Teresa in December, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Santa Teresa.
UV Risk Categories
Weather in Santa Teresa varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Santa Teresa, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 7°C (46°F) | 11 mm (0.4 inches) | 81% | moderate |
| February Weather | 10°C (51°F) | 12 mm (0.5 inches) | 77% | very high |
| March Weather | 15°C (59°F) | 16 mm (0.6 inches) | 65% | very high |
| April Weather | 20°C (69°F) | 4 mm (0.1 inches) | 53% | extreme |
| May Weather | 25°C (77°F) | 3 mm (0.1 inches) | 51% | extreme |
| June Weather | 29°C (85°F) | 26 mm (1.0 inches) | 51% | extreme |
| July Weather | 29°C (84°F) | 31 mm (1.2 inches) | 60% | extreme |
| August Weather | 29°C (84°F) | 30 mm (1.2 inches) | 63% | extreme |
| September Weather | 25°C (78°F) | 29 mm (1.1 inches) | 74% | extreme |
| October Weather | 19°C (67°F) | 19 mm (0.7 inches) | 75% | very high |
| November Weather | 13°C (56°F) | 13 mm (0.5 inches) | 82% | high |
| December Weather | 8°C (47°F) | 17 mm (0.7 inches) | 87% | moderate |