Altstätten Weather in September

September in Altstätten averages 19°C (66°F) during the day and 9°C (48°F) at night. Quite a bit of rainfall is typical this month, with around 145 mm (5.7 in) on average. An umbrella is a good idea.

Rainfall in Altstätten in September

Historically, September sees about 13 days of rain, with a monthly average of 145 mm (5.7 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Altstätten in September

Temperatures in Altstätten in September top out at 19°C (66°F) and drop to 9°C (48°F) overnight. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With overnight lows of 9°C (48°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Altstätten in September

The area enjoys a balanced 155 hours of sunlight, ensuring it's neither too overcast nor too sunny.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July, August and September typically offer the best weather for Altstätten.