September weather forecastLake Andes, SD
September
Weather in September
September, the first month of the autumn in Lake Andes, is still a warm month, with an average temperature varying between 55.4°F (13°C) and 76.3°F (24.6°C).Temperature
September is characterized by a mild reduction in the average high-temperature, from a moderately hot 85.1°F (29.5°C) in August to a still warm 76.3°F (24.6°C). Lake Andes, during the month of September, experiences an average low-temperature of 55.4°F (13°C).Humidity
In Lake Andes, the average relative humidity in September is 63%.Rainfall
In Lake Andes, in September, it is raining for 9.4 days, with typically 1.02" (26mm) of accumulated precipitation. In Lake Andes, during the entire year, the rain falls for 104.1 days and collects up to 14.29" (363mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:59 am and sunset at 8:08 pm. On the last day of September, sunrise is at 7:31 am and sunset at 7:16 pm CDT.
Sunshine
The average sunshine in September is 8.9h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 5 suggests this advice:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lake Andes, SD
- Average high temperature in September: 76.3°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in September: 55.4°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure in September
Lake Andes, SD
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Lake Andes, SD
- Average wind speed in September: 9.4mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).
Average humidity in September
Lake Andes, SD
- Average humidity in September: 63%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (62%).
Average rainfall in September
Lake Andes, SD
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is February (0.31").
Average rainfall days in September
Lake Andes, SD
- Average rainfall days in September: 9.4 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (2.9 days).
Average snowfall in September
Lake Andes, SD
- Average snowfall in September: 0"
The months with the highest snowfall are January and March (1.93").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Lake Andes, SD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lake Andes, SD
- Average daylight in September: 12h and 30min
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: 8h and 54min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in September
Lake Andes, SD
- Average sunshine days in September: 18.4 days
The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in September
Lake Andes, SD
- Average UV index in September: 5
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
Lake Andes, SD
- Average cloud cover in September: 24
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 23).
Average visibility in September
Lake Andes, 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).
