September weather forecastMount Auburn, IA
September
Weather in September
September, the first month of the autumn in Mount Auburn, is still a pleasant month, with an average temperature fluctuating between 54.7°F (12.6°C) and 73°F (22.8°C).Temperature
The onset of September entails a subtle temperature shift, as the average high-temperature eases from a moderately hot 78.8°F (26°C) in August to a pleasant 73°F (22.8°C). The nighttime temperature in Mount Auburn, during September, averages of 54.7°F (12.6°C).Humidity
The average relative humidity in September in Mount Auburn is 78%.Rainfall
In Mount Auburn, in September, it is raining for 10.3 days, with typically 1.34" (34mm) of accumulated precipitation. Throughout the year, there are 117.9 rainfall days, and 15.63" (397mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Mount Auburn.Daylight
In Mount Auburn, the average length of the day in September is 12h and 28min.On the first day of September in Mount Auburn, Iowa, sunrise is at 6:34 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:51 pm CDT.
Sunshine
The average sunshine in September in Mount Auburn is 9.2h.UV index
In September, the average daily maximum UV index in Mount Auburn, Iowa, is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: In September, a daily UV index of 4 turns into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mount Auburn, IA
- Average high temperature in September: 73°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in September: 54.7°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (12.7°F).
Average pressure in September
Mount Auburn, IA
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Mount Auburn, IA
- Average wind speed in September: 8.1mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in September
Mount Auburn, IA
- Average humidity in September: 78%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Mount Auburn, IA
- Average rainfall in September: 1.34"
The wettest month (with the highest rainfall) is June (2.52").
The driest month (with the least rainfall) is February (0.43").
Average rainfall days in September
Mount Auburn, IA
- Average rainfall days in September: 10.3 days
The month with the highest number of rainy days is May (16 days).
The months with the least rainy days are January and February (3.1 days).
Average snowfall in September
Mount Auburn, IA
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (1.97").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Mount Auburn, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mount Auburn, IA
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 9h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Mount Auburn, IA
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is January (21.6 days).
The month with the least sunshine days is June (11.8 days).
Average UV index in September
Mount Auburn, IA
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Mount Auburn, IA
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in September
Mount Auburn, IA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
