September weather forecastOto, IA
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Oto, Iowa, with temperature in the range of an average low of 55.6°F (13.1°C) and an average high of 75°F (23.9°C).Temperature
Oto observes a small decrease in the average high-temperature with the arrival of September, falling from August's warm 80.6°F (27°C) to a still moderately hot 75°F (23.9°C). In Oto, the average temperature during the nights of September drops to a mild 55.6°F (13.1°C).Humidity
The average relative humidity in September in Oto is 72%.Rainfall
In September, in Oto, the rain falls for 10.6 days. Throughout September, 1.46" (37mm) of precipitation is accumulated. In Oto, during the entire year, the rain falls for 105.4 days and collects up to 15.83" (402mm) of precipitation.Snowfall
In Oto, Iowa, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 28min.On the first day of September in Oto, Iowa, sunrise is at 6:49 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:06 pm CDT.
Sunshine
The average sunshine in September in Oto is 8.9h.UV index
In Oto, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: A daily high UV index of 4 in September leads to these guidelines:
Put precautions into practice - Protective measures against sun-induced damage are advised. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Oto, IA
- Average high temperature in September: 75°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in September: 55.6°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure in September
Oto, IA
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Oto, IA
- Average wind speed in September: 8.9mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity in September
Oto, IA
- Average humidity in September: 72%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (66%).
Average rainfall in September
Oto, IA
- Average rainfall in September: 1.46"
The wettest month (with the highest rainfall) is June (2.48").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in September
Oto, IA
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is January (2.3 days).
Average snowfall in September
Oto, IA
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Oto, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Oto, 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 6min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in September
Oto, IA
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is December (23.4 days).
The month with the least sunshine days is June (13.1 days).
Average UV index in September
Oto, IA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Oto, IA
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in September
Oto, IA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
