Santa Rosa Weather in January

January in Santa Rosa brings very high temperatures, with daytime highs of 31°C (88°F) and nights around 18°C (64°F). Quite a bit of rainfall is expected, around 84 mm (3.3 in), so pack an umbrella.

Rainfall in Santa Rosa in January

Typically, you can expect about 8 days of rain this month, with 84 mm (3.3 in) on average. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Santa Rosa in January

In January, Santa Rosa gets very high temperatures, with highs of 31°C (88°F). Nights cool to around 18°C (64°F). Mornings and evenings are often more comfortable than the peak afternoon hours. With overnight lows of 18°C (64°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep. Note that these temperatures are average, but some days may be hotter. Dress in cool, breathable fabrics to stay comfortable in the heat.

Sunshine in Santa Rosa in January

The month enjoys around 311 hours of sunshine, creating mostly sunny days with good weather conditions.

Wind Speed in Santa Rosa in January

Average wind speeds reach 3 m/s (6 knots) in January, creating light breezes that feel pleasant throughout the day. Some days are calmer, while others bring slightly more active breezes.

If you're looking for dry conditions and comfortable temperatures, January may not be the ideal month to visit Santa Rosa. Our weather planner can help you explore destinations with more pleasant weather conditions.