Last updated: June 24, 2025
In San Ygnacio, United States, the average temperature in December is a comfortable 17°C (63°F), with fluctuations ranging from a chilly 1°C (34°F) to a warm 36°C (97°F). Expect a modest 19 mm (0.8 in) of precipitation over 2 days, accompanied by an average humidity level of 86%.
In December in San Ygnacio, the average temperature is 17°C (63°F), with maximums reaching 36°C (97°F) and minimums dropping as low as 1°C (34°F). This variability in temperature makes it essential to pack accordingly for a comfortable travel experience.
In San Ygnacio in December, the precipitation amount is 19 mm (0.8 in) over a span of 2 days.
In San Ygnacio in December humidity is 86%. With an average temperature of 17°C (63°F), this humidity feels like a heavy blanket wrapping around you, making the air feel thick and slightly stifling for traveling, as every step requires more effort and even a gentle breeze feels refreshing amidst the muggy atmosphere.
In San Ygnacio 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 San Ygnacio.
UV Risk Categories
Weather in San Ygnacio varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Ygnacio, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 16°C (60°F) | 15 mm (0.6 inches) | 83% | high |
| February Weather | 18°C (65°F) | 15 mm (0.6 inches) | 79% | very high |
| March Weather | 23°C (73°F) | 31 mm (1.2 inches) | 76% | very high |
| April Weather | 26°C (78°F) | 44 mm (1.7 inches) | 77% | extreme |
| May Weather | 29°C (84°F) | 69 mm (2.7 inches) | 80% | extreme |
| June Weather | 31°C (88°F) | 47 mm (1.8 inches) | 73% | extreme |
| July Weather | 32°C (89°F) | 60 mm (2.4 inches) | 66% | extreme |
| August Weather | 32°C (90°F) | 18 mm (0.7 inches) | 65% | extreme |
| September Weather | 29°C (85°F) | 99 mm (3.9 inches) | 73% | extreme |
| October Weather | 25°C (78°F) | 38 mm (1.5 inches) | 76% | very high |
| November Weather | 20°C (68°F) | 25 mm (1.0 inches) | 80% | high |
| December Weather | 17°C (63°F) | 19 mm (0.8 inches) | 86% | moderate |