Last updated: June 24, 2025
In October, the average temperature in Santa Rosa, United States hovers around 25°C (77°F). Expect a minimum dip to 7°C (45°F), while the mercury can rise to a sweltering 37°C (98°F). With an average humidity of 76% and 64 mm (2.5 in) of precipitation spread across 9 days, be prepared for a mix of warmth and occasional showers!
In October in Santa Rosa, the average temperature is 25°C (77°F), with maximums reaching up to 37°C (98°F) and minimums dipping as low as 7°C (45°F). This climate makes Santa Rosa an ideal destination for travelers seeking warm weather with the flexibility to enjoy cooler evenings.
In Santa Rosa in October, the precipitation amount is 64 mm (2.5 in) over a span of 9 days.
In Santa Rosa in October, humidity is 76%. With an average temperature of 25°C (77°F), this humidity feels like a warm, heavy blanket wrapping around you, making traveling feel muggy and requiring frequent breaks to stay refreshed.
In Santa Rosa in October, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Santa Rosa.
UV Risk Categories
Weather in Santa Rosa varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Santa Rosa, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 17°C (62°F) | 24 mm (1.0 inches) | 83% | high |
February Weather | 18°C (65°F) | 21 mm (0.8 inches) | 79% | very high |
March Weather | 22°C (72°F) | 35 mm (1.4 inches) | 76% | very high |
April Weather | 25°C (77°F) | 30 mm (1.2 inches) | 77% | extreme |
May Weather | 28°C (82°F) | 81 mm (3.2 inches) | 80% | extreme |
June Weather | 29°C (85°F) | 91 mm (3.6 inches) | 73% | extreme |
July Weather | 30°C (86°F) | 94 mm (3.7 inches) | 66% | extreme |
August Weather | 30°C (87°F) | 33 mm (1.3 inches) | 65% | extreme |
September Weather | 28°C (83°F) | 114 mm (4.5 inches) | 73% | extreme |
October Weather | 25°C (77°F) | 64 mm (2.5 inches) | 76% | very high |
November Weather | 21°C (69°F) | 30 mm (1.2 inches) | 80% | high |
December Weather | 18°C (65°F) | 23 mm (0.9 inches) | 86% | high |