Four Corners Weather in September

The climate in Four Corners during September can be summarized as mild and reasonably dry.

September is in the fall / autumn in Four Corners and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a comfortable 24°C (76°F), whilst at night 8°C (47°F) is normal.

On average September is the 4th driest month of the year in Four Corners with around 43mm 1.7 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.

On the flip side this corresponds to an average of 9 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 Four Corners in September 2025.