Santa Rosa Weather in January

During January, Santa Rosa experiences very high daytime temperatures of 32°C (90°F) and cooler nights around 20°C (68°F). Expect quite a bit of rainfall. Around 113 mm (4.4 in) is typical.

Rainfall in Santa Rosa in January

Historically, the month has about 8 days of rain, averaging 113 mm (4.4 in) in total. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Santa Rosa in January

January in Santa Rosa brings very high temperatures, with highs of 32°C (90°F) and nights around 20°C (68°F). Sunshine and humidity can make it feel even warmer than the raw temperature suggests. With overnight lows of 20°C (68°F), evenings stay pleasantly warm. Keep in mind that temperatures can exceed these averages. Dress for the heat and stay hydrated, especially during peak sun hours.

Sunshine in Santa Rosa in January

There are approximately 271 hours of sunshine this month, resulting in mostly clear days.

January in Santa Rosa can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.