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 onset of September aligns with a soft reduction in the average high-temperature, gently falling from a moderately hot 80.2°F (26.8°C) in August to an agreeable 72.5°F (22.5°C). During the September nights, an average temperature of 52.3°F (11.3°C) is observed in Hetland.Humidity
In September, the average relative humidity is 70%.Rainfall
In Hetland, in September, it is raining for 10.9 days, with typically 1.65" (42mm) of accumulated precipitation. Throughout the year, there are 125.5 rainfall days, and 21.65" (550mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Hetland, the average length of the day in September is 12h and 30min.On the first day of September, sunrise is at 6:52 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:10 pm CDT.
Sunshine
The average sunshine in September is 8.9h.UV index
In September, the average daily maximum UV index in Hetland is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 4 during September translates into the following directions:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
What is the usual temperature for Hetland in September?
What is the average humidity in September in Hetland?
How much does it rain in Hetland in September?
When it does not snow in Hetland?
Does it snow in Hetland in September?
How many hours of daylight does Hetland have in September?
When are sunrise and sunset in September in Hetland?
How many hours of sunshine does Hetland have in September?
How high is the UV index in September in Hetland?
Average temperature in September
Hetland, SD
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (20.7°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°F).
Average pressure in September
Hetland, SD
- Average pressure in September: 29.97"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
Hetland, SD
- Average wind speed in September: 9.8mph
The windiest month (with the highest average wind speed) is April (11.5mph).
The calmest month (with the lowest average wind speed) is July (8.4mph).
Average humidity in September
Hetland, SD
- Average humidity in September: 70%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is October (68%).
Average rainfall in September
Hetland, SD
- Average rainfall in September: 1.65"
The wettest month (with the highest rainfall) is June (3.46").
The driest month (with the least rainfall) is November (0.67").
Average rainfall days in September
Hetland, SD
- Average rainfall days in September: 10.9 days
The month with the highest number of rainy days is June (19.8 days).
The month with the least rainy days is January (3.2 days).
Average snowfall in September
Hetland, SD
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Hetland, SD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hetland, SD
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
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: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Hetland, SD
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is June (8.3 days).
Average UV index in September
Hetland, SD
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Hetland, SD
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in September
Hetland, 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).
Hetland, South Dakota, USA
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