September weather forecastGeddes, SD
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Geddes, South Dakota, with an average temperature ranging between min 55.4°F (13°C) and max 76.3°F (24.6°C).Temperature
Geddes in September undergoes a slight reduction in the average high-temperature, shifting from August's 85.1°F (29.5°C) to a still moderately hot 76.3°F (24.6°C). An average low-temperature of 55.4°F (13°C) is noted during the nights in September.Humidity
In Geddes, the average relative humidity in September is 63%.Rainfall
In Geddes, during September, the rain falls for 9.4 days and regularly aggregates up to 1.02" (26mm) of precipitation. Throughout the year, there are 104.1 rainfall days, and 14.29" (363mm) of precipitation is accumulated.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 September, sunrise is at 6:59 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 7:17 pm CDT.
Sunshine
In Geddes, the average sunshine in September is 8.9h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In September, the maximum UV index of 5 transforms into these recommendations:
Undertake protective steps - Preventing sun damage is advised. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Geddes, 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
Geddes, 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
Geddes, 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
Geddes, 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
Geddes, 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
Geddes, 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
Geddes, 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
Geddes, 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
Geddes, 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 0min).
- 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
Geddes, 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
Geddes, 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
Geddes, 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
Geddes, 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).
