September weather forecastBuffalo, SD
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Buffalo, South Dakota, with an average temperature fluctuating between 73.2°F (22.9°C) and 54.5°F (12.5°C).Temperature
In the transition to September, Buffalo observes a drop in the average high-temperature, moving from a moderately hot 82.9°F (28.3°C) in August to an agreeable 73.2°F (22.9°C). Buffalo's average low-temperature is measured at a cool 54.5°F (12.5°C) during September.Humidity
In Buffalo, the average relative humidity in September is 48%.Rainfall
In Buffalo, in September, during 9 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. Throughout the year, there are 103.8 rainfall days, and 14.88" (378mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:16 am and sunset at 7:31 pm. On the last day of September, sunrise is at 6:52 am and sunset at 6:35 pm MDT.
Sunshine
In September, the average sunshine in Buffalo is 10h.UV index
In September, the average daily maximum UV index in Buffalo, South Dakota, is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 4 during September translates into the following guidance:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Buffalo, SD
- Average high temperature in September: 73.2°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in September
Buffalo, SD
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Buffalo, SD
- Average wind speed in September: 10.6mph
The windiest months (with the highest average wind speed) are January and October (11.9mph).
The calmest month (with the lowest average wind speed) is July (9.8mph).
Average humidity in September
Buffalo, SD
- Average humidity in September: 48%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (47%).
Average rainfall in September
Buffalo, SD
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is May (2.68").
The driest months (with the least rainfall) are January and November (0.51").
Average rainfall days in September
Buffalo, SD
- Average rainfall days in September: 9 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (3.3 days).
Average snowfall in September
Buffalo, SD
- Average snowfall in September: 0"
The month with the highest snowfall is March (4.37").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Buffalo, SD
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (12.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Buffalo, SD
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 10h and 0min
The month with the most sunshine is August (Average sunshine: 11h and 30min).
The months with the least sunshine are January and February (Average sunshine: 5h and 0min).
Average sunshine days in September
Buffalo, SD
- Average sunshine days in September: 18.8 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is April (11.6 days).
Average UV index in September
Buffalo, SD
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in September
Buffalo, SD
- Average cloud cover in September: 22
The months with the most cloud cover are January and February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Buffalo, 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).
