Fort Irwin Weather in August

The climate in Fort Irwin during August can be summarized as very hot and dry.

August is in the summer in Fort Irwin and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a warm 38°C (101°F), whilst at night 21°C (69°F) is normal.

On average August is the 3rd wettest month of the year in Fort Irwin with around 14mm 0.5 inches of rain making it a dry time to visit. This rainfall is typically spread over 2 days, although this may vary considerably.

On the flip side this corresponds to an average of 12.4 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Fort Irwin in August 2025.