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
September brings a minor decrease, with the average high-temperature reducing from 85.8°F (29.9°C) in August to a still warm 76.3°F (24.6°C). Throughout September, the nighttime temperature averages to a refreshing 55.9°F (13.3°C).Humidity
The least humid month is September, with an average relative humidity of 58%.Rainfall
In Lower Brule, South Dakota, in September, it is raining for 8.5 days, with typically 1.18" (30mm) of accumulated precipitation. Throughout the year, in Lower Brule, South Dakota, there are 107.6 rainfall days, and 17.83" (453mm) of precipitation is accumulated.Snowfall
In Lower Brule, snow does not fall in May through September.Daylight
The average length of the day in September in Lower Brule is 12h and 29min.On the first day of September in Lower Brule, sunrise is at 7:02 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 7:20 pm CDT.
Sunshine
In Lower Brule, the average sunshine in September is 8.8h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index, 5 during September, leads to the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Frequently asked questions
What is the temperature in September in Lower Brule?
What is the least humid month in Lower Brule?
What is the average humidity in September in Lower Brule?
How much does it rain in Lower Brule in September?
When it does not snow in Lower Brule?
Does it snow in Lower Brule in September?
How many hours of daylight does Lower Brule have in September?
When is the sunrise / sunset in September in Lower Brule?
How many hours of sunshine does Lower Brule have in September?
What is the UV index intensity in September in Lower Brule?
Average temperature in September
Lower Brule, SD
- Average high temperature in September: 76.3°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in September: 55.9°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure in September
Lower Brule, SD
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Lower Brule, SD
- Average wind speed in September: 10.3mph
The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is August (9.1mph).
Average humidity in September
Lower Brule, SD
- Average humidity in September: 58%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is September (58%).
Average rainfall in September
Lower Brule, SD
- Average rainfall in September: 1.18"
The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is November (0.55").
Average rainfall days in September
Lower Brule, SD
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in September
Lower Brule, SD
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.66").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Lower Brule, SD
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lower Brule, 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: 8h and 54min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in September
Lower Brule, SD
- Average sunshine days in September: 19.6 days
The month with the most sunshine days is November (20.7 days).
The month with the least sunshine days is April (11.8 days).
Average UV index in September
Lower Brule, SD
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in September
Lower Brule, SD
- Average cloud cover in September: 23
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in September
Lower Brule, SD
- 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).
Lower Brule, South Dakota, USA
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