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 slight decrease in temperature, down from a moderately hot 81.1°F (27.3°C) in August to an agreeable 72.7°F (22.6°C). September nights cool down to an average low-temperature of 52.3°F (11.3°C).Humidity
The months with the lowest humidity in West Britton are August and September, with an average relative humidity of 62%.Rainfall
In September, the rain falls for 9.5 days. Throughout September, 1.5" (38mm) of precipitation is accumulated. Throughout the year, in West Britton, South Dakota, there are 109.5 rainfall days, and 20.39" (518mm) of precipitation is accumulated.Snowfall
In West Britton, snow does not fall in June through September.Daylight
In West Britton, South Dakota, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:53 am and sunset at 8:08 pm. On the last day of September, sunrise is at 7:29 am and sunset at 7:12 pm CDT.
Sunshine
The average sunshine in September is 8.8h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Frequently asked questions
What are the temperatures in West Britton in September?
What are the least humid months in West Britton?
What is the average humidity in September in West Britton?
How many days does it rain in September in West Britton?
When it does not snow in West Britton?
Does it snow in West Britton in September?
What is the average length of the day in September in West Britton?
What time are sunrise and sunset in September in West Britton?
How many hours of sunshine does West Britton have in September?
What is the UV index intensity in September in West Britton?
Average temperature in September
West Britton, SD
- Average high temperature in September: 72.7°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (19°F).
- Average low temperature in September: 52.3°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).
Average pressure in September
West Britton, SD
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
West Britton, SD
- Average wind speed in September: 9.6mph
The windiest month (with the highest average wind speed) is October (10.8mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).
Average humidity in September
West Britton, SD
- Average humidity in September: 62%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are August and September (62%).
Average rainfall in September
West Britton, SD
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is June (3.62").
The driest month (with the least rainfall) is January (0.63").
Average rainfall days in September
West Britton, SD
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is June (16.8 days).
The month with the least rainy days is February (2.4 days).
Average snowfall in September
West Britton, SD
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
West Britton, SD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.3 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 Britton, SD
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
West Britton, SD
- Average sunshine days in September: 18.5 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in September
West Britton, 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 and November (UV index 1).
Average cloud cover in September
West Britton, SD
- Average cloud cover in September: 26
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in September
West Britton, SD
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and March (5mi).
West Britton, South Dakota, USA
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