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 average high-temperature in Brandon shows a slight dip in September, from August's warm 80.8°F (27.1°C) to a still moderately hot 74.1°F (23.4°C). Throughout September, the temperature tends to fall to a consistent average low of 53.2°F (11.8°C).Humidity
In Brandon, the average relative humidity in September is 70%.Rainfall
In Brandon, during September, the rain falls for 10.8 days and regularly aggregates up to 1.93" (49mm) of precipitation. In Brandon, during the entire year, the rain falls for 112.2 days and collects up to 20.67" (525mm) of precipitation.Snowfall
June through September are months without snowfall in Brandon.Daylight
In Brandon, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:50 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:08 pm CDT.
Sunshine
In September, the average sunshine is 8.8h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: A maximum daily UV index of 4 during September morphs into the following directions:
Ensure safety - Sun damage prevention is strongly urged. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Frequently asked questions
What is the average September temperature in Brandon?
What is the average humidity in September in Brandon?
How much does it rain in Brandon in September?
When it does not snow in Brandon?
Does it snow in Brandon in September?
What is the average length of the day in September in Brandon?
What time are sunrise and sunset in September in Brandon?
How long on average sun shines in September in Brandon?
How high is the UV index in September in Brandon?
Average temperature in September
Brandon, SD
- Average high temperature in September: 74.1°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in September: 53.2°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 (9.3°F).
Average pressure in September
Brandon, SD
- Average pressure in September: 29.98"Hg
The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Brandon, SD
- Average wind speed in September: 9.4mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in September
Brandon, SD
- Average humidity in September: 70%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (67%).
Average rainfall in September
Brandon, SD
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is June (3.19").
The driest month (with the least rainfall) is November (0.63").
Average rainfall days in September
Brandon, SD
- Average rainfall days in September: 10.8 days
The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (2.2 days).
Average snowfall in September
Brandon, SD
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Brandon, SD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (10 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Brandon, SD
- Average daylight in September: 12h and 3min
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: 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 0min).
Average sunshine days in September
Brandon, SD
- Average sunshine days in September: 17.7 days
The month with the most sunshine days is November (22.8 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in September
Brandon, SD
- 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, October, November and December (UV index 2).
Average cloud cover in September
Brandon, SD
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in September
Brandon, SD
- 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).
Brandon, South Dakota, USA
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