Palmer Weather in September

The climate in Palmer during September can be summarized as cool and reasonably dry.

September is in the fall / autumn in Palmer and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a cool 14°C (57°F), whilst at night 3°C (37°F) is normal.

On average September is the wettest month of the year in Palmer with around 79mm 3.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.

On the flip side this corresponds to an average of 5.8 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 Palmer in September 2025.