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 brings a small change in high-temperatures, falling from a moderately hot 82.6°F (28.1°C) in August to a pleasant 73°F (22.8°C). During the nights in September, Lemmon observes an average low-temperature of 54°F (12.2°C).Humidity
August and September, with an average relative humidity of 51%, are the least humid months.Rainfall
In September, in Lemmon, the rain falls for 7.6 days. Throughout September, 1.02" (26mm) of precipitation is accumulated. Throughout the year, there are 101.3 rainfall days, and 14.25" (362mm) of precipitation is accumulated.Snowfall
In Lemmon, snow does not fall in June through September.Daylight
In Lemmon, the average length of the day in September is 12h and 31min.On the first day of September, sunrise is at 6:10 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 6:29 pm MDT.
Sunshine
In Lemmon, the average sunshine in September is 9.7h.UV index
In Lemmon, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The daily high UV index of 4 in September translates into this advice:
Guard yourself - Avoiding sunburn is suggested. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Frequently asked questions
What is the average September temperature in Lemmon?
What is the least humid month in Lemmon?
What is the average humidity in September in Lemmon?
How much does it rain in Lemmon in September?
When it does not snow in Lemmon?
Does it snow in Lemmon in September?
What is the average length of the day in September in Lemmon?
When is the sunrise / sunset in September in Lemmon?
How long on average sun shines in September in Lemmon?
What is the UV index intensity in September in Lemmon?
Average temperature in September
Lemmon, SD
- Average high temperature in September: 73°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in September: 54°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure in September
Lemmon, SD
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Lemmon, SD
- Average wind speed in September: 10.7mph
The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is August (9.6mph).
Average humidity in September
Lemmon, SD
- Average humidity in September: 51%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are August and September (51%).
Average rainfall in September
Lemmon, SD
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is June (2.28").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in September
Lemmon, SD
- Average rainfall days in September: 7.6 days
The month with the highest number of rainy days is June (15.1 days).
The month with the least rainy days is January (2.9 days).
Average snowfall in September
Lemmon, SD
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Lemmon, SD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lemmon, 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: 9h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in September
Lemmon, SD
- Average sunshine days in September: 19.2 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (11.7 days).
Average UV index in September
Lemmon, SD
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Lemmon, SD
- Average cloud cover in September: 23
The months with the most cloud cover are January and February (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 20).
Average visibility in September
Lemmon, 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).
Lemmon, South Dakota, USA
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