Santa Rosa

Weather in Santa Rosa today, October 12, 2026

Santa Rosa starts October 12, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans. Early hours look the most unsettled, with rain probability near 22% by 10:00. The thickest cloud arrives around 00:00, reaching about 99%.Santa Rosa starts October 12, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans. Early hours look the most unsettled, with rain probability near 22% by 10:00. The thickest cloud arrives around 00:00, reaching about 99%.

Temperatures climb from an overnight low near 20°C toward a daytime high of about 28°C. Relative humidity sits between 67% and 95%, reaching its peak around 05:00. A lighter breeze peaks around 12:00 near 12 km/h.Temperatures climb from an overnight low near 68°F toward a daytime high of about 82°F. Relative humidity sits between 67% and 95%, reaching its peak around 05:00. A lighter breeze peaks around 12:00 near 8 mph.

Expect the wet theme to continue later, as rain odds reach 76% near 16:00. Cloud amounts hold near 92% around 22:00. Visibility stays generally good near 15.4 km on average, though it can drop toward 4.9 km in thicker cloud or showers. Sunrise is at 05:39 and sunset at 17:23, giving 11 hours 43 minutes of sunlight today.Expect the wet theme to continue later, as rain odds reach 76% near 16:00. Cloud amounts hold near 92% around 22:00. Visibility stays generally good near 9.6 mi on average, though it can drop toward 3.1 mi in thicker cloud or showers. Sunrise is at 05:39 and sunset at 17:23, giving 11 hours 43 minutes of sunlight today.

The practical takeaway for Santa Rosa on October 12, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 28°C.The practical takeaway for Santa Rosa on October 12, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 82°F.