Mount Ayr Weather in September

What's the weather like in Mount Ayr (Iowa) in September 2025?

The climate in Mount Ayr during September can be summarized as mild and damp.

September is in the fall / autumn in Mount Ayr and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 24°C (76°F), whilst at night 11°C (53°F) is normal.

Mount Ayr weather averages (imperial / metric)
Daytime temperature 24.2°C 75.6°F
Nightly temperature 11.4°C 52.5°F
Average temperature 17.8°C 64°F
Daily sunshine 8.6 hrs
Avg rainfall 105 mm 4.1 ins
Rainy days 9 days
Sea temperature 19.5°C 67°F
Humidity 71%
Windspeed 15.5kph 10 mph

On average September is the 5th wettest month of the year in Mount Ayr with around 105mm 4.1 inches of rain making it a damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.6 hours of sunshine per day.

September temperatures in Mount Ayr

Mount Ayr average temperature in September

September rainfall

Mount Ayr average rain in September

September hourly sunshine

Mount Ayr average rain in September

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 Mount Ayr in September 2025.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Mount Ayr weather stats

Mount Ayr weather statistics
Hottest month: July 29.7°C 85.5°F
Driest month: January 21mm 0.8ins
Sunniest month: July 11.4hrs
Coldest month: January -1.4°C 29.5°F
Wettest month: July 119mm 4.7ins
Map showing location of Mount Ayr (40.71471, -94.23523) Mount Ayr map pin © Google

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