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
Egan's September weather shows a modest shift in high-temperatures, falling from August's moderately hot 79.9°F (26.6°C) to a pleasant 72.5°F (22.5°C). Throughout September, the temperature in Egan falls to an average low of 52.3°F (11.3°C).Humidity
In September, the average relative humidity in Egan is 70%.Rainfall
In Egan, in September, it is raining for 10.2 days, with typically 1.61" (41mm) of accumulated precipitation. Throughout the year, in Egan, there are 113.8 rainfall days, and 20.59" (523mm) of precipitation is accumulated.Snowfall
In Egan, snow does not fall in June through September.Daylight
In Egan, the average length of the day in September is 12h and 29min.On the first day of September in Egan, sunrise is at 6:50 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:08 pm CDT.
Sunshine
In Egan, the average sunshine in September is 8.8h.UV index
The average daily maximum UV index in September in Egan is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The UV index of 4 in September translates into these instructions:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Egan in September?
What is the average humidity in September in Egan?
How many days does it rain in September in Egan?
When it does not snow in Egan?
Does it snow in Egan in September?
What is the average length of the day in September in Egan?
When is the sunrise / sunset in September in Egan?
How long on average sun shines in September in Egan?
What is the UV index reading in September in Egan?
Average temperature in September
Egan, SD
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (21.6°F).
- Average low temperature in September: 52.3°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (7.7°F).
Average pressure in September
Egan, 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
Egan, SD
- Average wind speed in September: 9.8mph
The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).
Average humidity in September
Egan, SD
- Average humidity in September: 70%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (68%).
Average rainfall in September
Egan, SD
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is June (3.15").
The driest months (with the least rainfall) are January and November (0.63").
Average rainfall days in September
Egan, SD
- Average rainfall days in September: 10.2 days
The month with the highest number of rainy days is June (17.6 days).
The month with the least rainy days is February (2.4 days).
Average snowfall in September
Egan, SD
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Egan, SD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Egan, 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 30min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Egan, SD
- Average sunshine days in September: 17.6 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in September
Egan, 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, November and December (UV index 1).
Average cloud cover in September
Egan, SD
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in September
Egan, 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).
Egan, South Dakota, USA
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