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
As September begins in Harrisburg, there is a minor decrease in the average high-temperature, softly falling from a warm 81.1°F (27.3°C) in August to a still moderately hot 74.5°F (23.6°C). Throughout September, an average low-temperature of 54°F (12.2°C) is experienced.Humidity
In Harrisburg, the average relative humidity in September is 71%.Rainfall
In Harrisburg, during September, the rain falls for 11.1 days and regularly aggregates up to 2.09" (53mm) of precipitation. Throughout the year, there are 119.2 rainfall days, and 21.73" (552mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in Harrisburg, South Dakota, is 12h and 29min.On the first day of September, sunrise is at 6:51 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:09 pm CDT.
Sunshine
In September, the average sunshine in Harrisburg is 8.9h.UV index
In Harrisburg, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In September, a daily UV index of 4 turns into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Frequently asked questions
What is the usual temperature for Harrisburg in September?
What is the average humidity in September in Harrisburg?
How much does it rain in Harrisburg in September?
When it does not snow in Harrisburg?
Does it snow in Harrisburg in September?
How many hours of daylight does Harrisburg have in September?
When are sunrise and sunset in September in Harrisburg?
How long on average sun shines in September in Harrisburg?
What is the UV index intensity in September in Harrisburg?
Average temperature in September
Harrisburg, SD
- Average high temperature in September: 74.5°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (24.1°F).
- Average low temperature in September: 54°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).
Average pressure in September
Harrisburg, SD
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Harrisburg, SD
- Average wind speed in September: 9.2mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity in September
Harrisburg, SD
- Average humidity in September: 71%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (66%).
Average rainfall in September
Harrisburg, SD
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is June (3.35").
The driest months (with the least rainfall) are January, February and November (0.67").
Average rainfall days in September
Harrisburg, SD
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is June (17.7 days).
The month with the least rainy days is January (3.3 days).
Average snowfall in September
Harrisburg, SD
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.54").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Harrisburg, SD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (9.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Harrisburg, 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 42min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Harrisburg, SD
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is November (21 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in September
Harrisburg, 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, February, November and December (UV index 2).
Average cloud cover in September
Harrisburg, SD
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in September
Harrisburg, 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).
Harrisburg, South Dakota, USA
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