Glennallen Weather in September

September in Glennallen averages 12°C (54°F) during the day and 4°C (39°F) at night. It is the wettest month of the year, with 69 mm (2.7 in) of rainfall on average, so waterproof gear is a must.

Rainfall in Glennallen in September

During the wettest month of the year, an umbrella can be your best friend to stay dry. Looking at the last 30 years, the data shows about 11 days with rain, averaging 69 mm (2.7 in) for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.

Temperature in Glennallen in September

Daytime highs in Glennallen in September reach 12°C (54°F), with nights around 4°C (39°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With lows around 4°C (39°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Wind Speed in Glennallen in September

September has wind speeds averaging 3 m/s (6 knots). You can expect comfortable light winds that steadily move flags and feel mild throughout the day. Since this is an average, daily conditions vary from gentle winds to more active breezes.

If your ideal day consists of dry skies and pleasant temperatures, July typically offers the best circumstances for Glennallen.