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
The shift from August to September in South Sioux City coincides with a small decrease in the average high-temperature, down to a still moderately hot 75.6°F (24.2°C) from 81.9°F (27.7°C). South Sioux City, in September, observes a steady average low-temperature of 55.4°F (13°C).Humidity
The average relative humidity in September is 71%.Rainfall
In South Sioux City, in September, it is raining for 9.7 days, with typically 1.26" (32mm) of accumulated precipitation. In South Sioux City, during the entire year, the rain falls for 102.3 days and collects up to 12.91" (328mm) of precipitation.Snowfall
In South Sioux City, snow does not fall in May through September.Daylight
In South Sioux City, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:51 am and sunset at 7:59 pm. On the last day of September, in South Sioux City, Nebraska, sunrise is at 7:22 am and sunset at 7:08 pm CDT.
Sunshine
In September, the average sunshine in South Sioux City, Nebraska, is 8.9h.UV index
In September, the average daily maximum UV index in South Sioux City is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The average daily UV index of 4 in September transforms into the following instructions:
Ensure safety - Recommendations to avert sunburn are presented. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Frequently asked questions
What are the temperatures in South Sioux City in September?
What is the average humidity in September in South Sioux City?
How many days does it rain in September in South Sioux City?
When it does not snow in South Sioux City?
Does it snow in South Sioux City in September?
What is the average length of the day in September in South Sioux City?
When is the sunrise / sunset in September in South Sioux City?
How many hours of sunshine does South Sioux City have in September?
What is the UV index intensity in September in South Sioux City?
Average temperature in September
South Sioux City, NE
- Average high temperature in September: 75.6°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in September: 55.4°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 (13.5°F).
Average pressure in September
South Sioux City, NE
- 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
South Sioux City, NE
- Average wind speed in September: 8.9mph
The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).
Average humidity in September
South Sioux City, NE
- Average humidity in September: 71%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (65%).
Average rainfall in September
South Sioux City, NE
- Average rainfall in September: 1.26"
The wettest month (with the highest rainfall) is June (1.85").
The driest months (with the least rainfall) are January and February (0.39").
Average rainfall days in September
South Sioux City, NE
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is June (14.6 days).
The month with the least rainy days is January (2.6 days).
Average snowfall in September
South Sioux City, NE
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.77").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
South Sioux City, NE
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.2 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
South Sioux City, NE
- Average daylight in September: 12h and 3min
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 5min
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 30min).
Average sunshine days in September
South Sioux City, NE
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is January (22.6 days).
The month with the least sunshine days is June (13.1 days).
Average UV index in September
South Sioux City, NE
- 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
South Sioux City, NE
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in September
South Sioux City, NE
- 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).
South Sioux City, Nebraska, USA
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