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
During the shift to September, a minor reduction in average high-temperature is observed, shifting from a moderately hot 84°F (28.9°C) in August to a still warm 75.2°F (24°C). The average temperature during September nights dips to a cool 54°F (12.2°C).Humidity
The average relative humidity in September is 48%.Rainfall
In September, the rain falls for 9.3 days. Throughout September, 1.14" (29mm) of precipitation is accumulated. In Oelrichs, during the entire year, the rain falls for 115.8 days and collects up to 16.61" (422mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Oelrichs. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 49.2 snowfall days, and 23.19" (589mm) of snow is accumulated.Daylight
In Oelrichs, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:18 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 6:35 pm MDT.
Sunshine
In Oelrichs, the average sunshine in September is 10.4h.UV index
In Oelrichs, the average daily maximum UV index in September 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: In September, the maximum UV index of 4 transforms into these recommendations:
Take necessary precautions - Defending against sun damage is advocated. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Oelrichs in September?
What is the average humidity in September?
How many days does it rain in September in Oelrichs?
When does it start snowing in Oelrichs?
How many hours of daylight does Oelrichs have in September?
When are sunrise and sunset in September in Oelrichs?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Oelrichs, SD
- Average high temperature in September: 75.2°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is December (32.4°F).
- Average low temperature in September: 54°F
The month with the highest average low temperature is July (63.9°F).
The coldest months (with the lowest average low temperature) are February and December (18.5°F).
Average pressure in September
Oelrichs, SD
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Oelrichs, SD
- Average wind speed in September: 8.8mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).
Average humidity in September
Oelrichs, SD
- Average humidity in September: 48%
The month with the highest relative humidity is January (75%).
The month with the lowest relative humidity is August (47%).
Average rainfall in September
Oelrichs, SD
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is June (2.87").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in September
Oelrichs, SD
- Average rainfall days in September: 9.3 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is December (3.5 days).
Average snowfall in September
Oelrichs, SD
- Average snowfall in September: 0.04"
The month with the highest snowfall is February (3.66").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Oelrichs, SD
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (10.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Oelrichs, SD
- 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: 10h and 2min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 48min).
Average sunshine days in September
Oelrichs, SD
- Average sunshine days in September: 17.8 days
The month with the most sunshine days is December (21.4 days).
The month with the least sunshine days is May (11.2 days).
Average UV index in September
Oelrichs, SD
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Oelrichs, SD
- Average cloud cover in September: 19
The month with the most cloud cover is February (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in September
Oelrichs, 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).
Oelrichs, South Dakota, USA
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