October Weather in Grass Valley

Last updated: March 2, 2024

The weather in Grass Valley, United States, during October is characterized by an average temperature of 15°C (60°F). Highs can soar to 30°C (86°F), while lows may dip to 2°C (37°F). Typically, the humidity level in Grass Valley throughout October hovers around 65%.

Precipitation and Sunshine hours

In October, Grass Valley averages 78 mm (3.1 inches) of rainfall, typically over the course of 3 rainy days. The month enjoys an average of 11 hours 6 minutes of daylight, with the sun shining for approximately 9 hours 7 minutes each day. Additionally, there is a 55% probability of sunny days during this period.

UV Index

In October, the UV Index in Grass Valley reaches a maximum of 6, indicating a level of High exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 25 minutes.

Monthly weather in Grass Valley

• Grass Valley weather January
• Grass Valley weather February
• Grass Valley weather March
• Grass Valley weather April
• Grass Valley weather May
• Grass Valley weather June
• Grass Valley weather July
• Grass Valley weather August
• Grass Valley weather September
• Grass Valley weather October
• Grass Valley weather November
• Grass Valley weather December