Last updated: June 24, 2025
In December, the average temperature in West Sacramento, United States hovers around 9°C (49°F). While you might experience chilly nights with a minimum temperature of -2°C (29°F), the days can warm up to a pleasant 24°C (76°F). However, be prepared for some rain, as 103 mm (4.1 in) of precipitation is typical during 9 days of the month. With an average humidity of 83%, it's wise to dress in layers to stay comfortable!
In December in West Sacramento, the average temperature is 9°C (49°F). Maximums can reach 24°C (76°F), and minimums can drop as low as -2°C (29°F). This variation in temperature means travelers should pack layers to enjoy a comfortable experience throughout the day.
In West Sacramento in December, the precipitation amount is 103 mm (4.1 in) distributed over 9 days.
In West Sacramento in December, humidity is 83%. With an average temperature of 9°C (49°F), this humidity feels like a damp blanket wrapping around you, making outdoor activities uncomfortable for traveling and requiring extra layers to stay warm and dry.
In West Sacramento in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in West Sacramento, you can check the information here.
UV Risk Categories
Weather in West Sacramento varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in West Sacramento, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 10°C (50°F) | 122 mm (4.8 inches) | 84% | moderate |
| February Weather | 11°C (53°F) | 109 mm (4.3 inches) | 84% | moderate |
| March Weather | 13°C (56°F) | 97 mm (3.8 inches) | 83% | high |
| April Weather | 17°C (63°F) | 44 mm (1.7 inches) | 81% | very high |
| May Weather | 20°C (69°F) | 20 mm (0.8 inches) | 74% | very high |
| June Weather | 24°C (76°F) | 3 mm (0.1 inches) | 64% | extreme |
| July Weather | 25°C (77°F) | 0 mm (0.0 inches) | 44% | extreme |
| August Weather | 25°C (76°F) | 0 mm (0.0 inches) | 36% | very high |
| September Weather | 23°C (74°F) | 2 mm (0.1 inches) | 44% | very high |
| October Weather | 19°C (66°F) | 39 mm (1.5 inches) | 65% | high |
| November Weather | 13°C (56°F) | 54 mm (2.1 inches) | 84% | moderate |
| December Weather | 9°C (49°F) | 103 mm (4.1 inches) | 83% | moderate |