Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Sioux Rapids experiences a minor change to a still moderately hot 73.6°F (23.1°C) in average high-temperature during September, closely reflecting August. During the nights in September, Sioux Rapids experiences a consistent average temperature of 54.5°F (12.5°C).Humidity
In September, the average relative humidity is 74%.Rainfall
In Sioux Rapids, in September, it is raining for 11.6 days, with typically 2.17" (55mm) of accumulated precipitation. In Sioux Rapids, during the entire year, the rain falls for 127.3 days and collects up to 23.58" (599mm) of precipitation.Snowfall
In Sioux Rapids, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 29min.On the first day of September in Sioux Rapids, sunrise is at 6:46 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:03 pm CDT.
Sunshine
In September, the average sunshine in Sioux Rapids is 9h.UV index
The average daily maximum UV index in September in Sioux Rapids is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The average daily UV index of 4 in September transforms into the following instructions:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Sioux Rapids?
What is the average humidity in September in Sioux Rapids?
How much does it rain in Sioux Rapids in September?
When it does not snow in Sioux Rapids?
Does it snow in Sioux Rapids in September?
What is the average length of the day in September in Sioux Rapids?
What time are sunrise and sunset in September in Sioux Rapids?
How many hours of sunshine does Sioux Rapids have in September?
What is the UV index reading in September in Sioux Rapids?
Average temperature in September
Sioux Rapids, IA
- Average high temperature in September: 73.6°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure in September
Sioux Rapids, 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 (29.88"Hg).
Average wind speed in September
Sioux Rapids, IA
- Average wind speed in September: 8.8mph
The windiest months (with the highest average wind speed) are January and April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).
Average humidity in September
Sioux Rapids, IA
- Average humidity in September: 74%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and October (68%).
Average rainfall in September
Sioux Rapids, IA
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is June (3.66").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in September
Sioux Rapids, IA
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is June (18.3 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in September
Sioux Rapids, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.96").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Sioux Rapids, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sioux Rapids, IA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Sioux Rapids, IA
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is June (9.6 days).
Average UV index in September
Sioux Rapids, 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 February (UV index 1).
Average cloud cover in September
Sioux Rapids, IA
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in September
Sioux Rapids, 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).
Sioux Rapids, Iowa, USA
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