Santa Rosa

What is the climate like in Santa Rosa?

The best time to visit Santa Rosa is typically May – October, with trip comfort peaking in July (9.5/10). Santa Rosa is warmest in July, when daily highs average 86°F (30°C), and coolest in December, when lows fall to about 41°F (5°C). The wettest month is typically January and the driest is July; the year sees roughly 30 in (755 mm) of precipitation.

• Best time to visitMay – October — comfort peaks in July (9.5/10)
• Warmest monthJuly — average high 86°F (30°C)
• Coolest monthDecember — average low 41°F (5°C)
• Wettest monthJanuary (6.3 in (161 mm))
• Driest monthJuly (0.0 in (0 mm))
• Annual precipitation30 in (755 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromSanta Rosa, 2 km away (1902-2026)