Last updated: June 24, 2025
In Santa Clara, United States, the average temperature in January hovers around 4°C (39°F). Expect chilly conditions, with minimums dipping as low as -18°C (0°F), while highs can reach a pleasant 18°C (65°F). During this month, precipitation measures approximately 33 mm (1.3 in) over 4 days, contributing to an average humidity of 81%. Stay prepared for a mix of cool air and occasional moisture!
In January in Santa Clara, the average temperature is 4°C (39°F). Maximums can reach 18°C (65°F), while minimums can dip as low as -18°C (0°F). Travelers should be prepared for a wide range of temperatures and dress in layers to ensure comfort during their visit.
In Santa Clara in January, the precipitation amount is 33 mm (1.3 in) over a span of 4 days.
In Santa Clara in January, humidity is 81%. With an average temperature of 4°C (39°F), this humidity feels like a chilling dampness that penetrates even the warmest layers of clothing, making outdoor exploration uncomfortable and prompting travelers to seek refuge indoors.
In Santa Clara in January, 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 Clara.
UV Risk Categories
Weather in Santa Clara varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Santa Clara, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (39°F) | 33 mm (1.3 inches) | 81% | moderate |
| February Weather | 6°C (42°F) | 41 mm (1.6 inches) | 82% | very high |
| March Weather | 10°C (50°F) | 28 mm (1.1 inches) | 68% | very high |
| April Weather | 15°C (59°F) | 5 mm (0.2 inches) | 55% | extreme |
| May Weather | 19°C (67°F) | 6 mm (0.2 inches) | 45% | extreme |
| June Weather | 25°C (76°F) | 14 mm (0.5 inches) | 37% | extreme |
| July Weather | 24°C (76°F) | 82 mm (3.2 inches) | 43% | extreme |
| August Weather | 23°C (74°F) | 47 mm (1.9 inches) | 53% | extreme |
| September Weather | 20°C (69°F) | 43 mm (1.7 inches) | 66% | extreme |
| October Weather | 15°C (60°F) | 24 mm (1.0 inches) | 72% | very high |
| November Weather | 10°C (50°F) | 31 mm (1.2 inches) | 81% | high |
| December Weather | 5°C (41°F) | 30 mm (1.2 inches) | 84% | moderate |