September weather forecastWest Okoboji, IA
September
Weather in September
September, the first month of the autumn in West Okoboji, is still a pleasant month, with temperature in the range of an average high of 72.7°F (22.6°C) and an average low of 53.8°F (12.1°C).Temperature
The advent of September presents an average high-temperature of a pleasant 72.7°F (22.6°C), maintaining a close correlation with the preceding month. During September nights, West Okoboji records an average temperature of 53.8°F (12.1°C).Humidity
In West Okoboji, Iowa, the average relative humidity in September is 74%.Rainfall
In September, the rain falls for 12 days. Throughout September, 2.2" (56mm) of precipitation is accumulated. In West Okoboji, Iowa, during the entire year, the rain falls for 121.8 days and collects up to 23.27" (591mm) of precipitation.Snowfall
In West Okoboji, snow does not fall in June through September.Daylight
The average length of the day in September in West Okoboji is 12h and 29min.On the first day of September, sunrise is at 6:45 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:02 pm CDT.
Sunshine
In West Okoboji, the average sunshine in September is 9.1h.UV index
In West Okoboji, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
West Okoboji, IA
- Average high temperature in September: 72.7°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in September: 53.8°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (9.5°F).
Average pressure in September
West Okoboji, IA
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
West Okoboji, IA
- Average wind speed in September: 9.1mph
The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).
Average humidity in September
West Okoboji, IA
- Average humidity in September: 74%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (68%).
Average rainfall in September
West Okoboji, IA
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is June (3.46").
The driest month (with the least rainfall) is January (0.83").
Average rainfall days in September
West Okoboji, IA
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is June (16.1 days).
The month with the least rainy days is February (3 days).
Average snowfall in September
West Okoboji, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.04").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
West Okoboji, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (11 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
West Okoboji, IA
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 9h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
West Okoboji, IA
- Average sunshine days in September: 16 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in September
West Okoboji, IA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover in September
West Okoboji, IA
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in September
West Okoboji, IA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
