August Weather in Grass Valley

Last updated: March 2, 2024

The weather in Grass Valley, United States, during August is characterized by an average temperature of 25°C (77°F). Highs can soar to 38°C (100°F), while lows may dip to 12°C (55°F). Typically, the humidity level in Grass Valley throughout August hovers around 36%.

Precipitation and Sunshine hours

In August, Grass Valley averages 2 mm (0.1 inches) of rainfall, typically over the course of 0 rainy days. The month enjoys an average of 13 hours 37 minutes of daylight, with the sun shining for approximately 11 hours 39 minutes each day. Additionally, there is a 93% probability of sunny days during this period.

UV Index

In August, the UV Index in Grass Valley reaches a maximum of 10, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 15 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