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 arrival of September corresponds with a minor reduction in the average high-temperature, down from August's tropical 90.3°F (32.4°C) to a moderately hot 82.8°F (28.2°C). Throughout September in Bison, a steady low-temperature average of 61.9°F (16.6°C) is noted.Heat index
The heat index value for September is estimated at a tropical 86°F (30°C). Long-standing exposure and activity could induce a feeling of tiredness and lead to heat cramps.It is important to note that the heat index values are for shaded areas and light wind scenarios. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humidity
In Bison, the average relative humidity in September is 59%.Rainfall
In September, the rain falls for 10 days. Throughout September, 1.18" (30mm) of precipitation is accumulated. In Bison, during the entire year, the rain falls for 97.2 days and collects up to 16.61" (422mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 7:06 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 7:20 pm CDT.
Sunshine
In Bison, the average sunshine in September is 9h.UV index
In Bison, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Bison, KS
- Average high temperature in September: 82.8°F
The warmest month (with the highest average high temperature) is July (93.7°F).
The month with the lowest average high temperature is December (43.2°F).
- Average low temperature in September: 61.9°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in September
Bison, KS
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Bison, KS
- Average wind speed in September: 11.1mph
The windiest month (with the highest average wind speed) is April (12.8mph).
The calmest month (with the lowest average wind speed) is August (9.8mph).
Average humidity in September
Bison, KS
- Average humidity in September: 59%
The months with the highest relative humidity are January and December (65%).
The month with the lowest relative humidity is July (54%).
Average rainfall in September
Bison, KS
- Average rainfall in September: 1.18"
The wettest month (with the highest rainfall) is May (2.87").
The driest months (with the least rainfall) are January and November (0.47").
Average rainfall days in September
Bison, KS
- Average rainfall days in September: 10 days
The month with the highest number of rainy days is August (13.1 days).
The month with the least rainy days is January (2.7 days).
Average snowfall in September
Bison, KS
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.97").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Bison, KS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.2 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
Bison, KS
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days in September
Bison, KS
- Average sunshine days in September: 18.4 days
The month with the most sunshine days is January (24.8 days).
The month with the least sunshine days is August (14.4 days).
Average UV index in September
Bison, KS
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Bison, KS
- Average cloud cover in September: 22
The months with the most cloud cover are February and April (Cloud cover 34).
The month with the least cloud cover is June (Cloud cover 18).
Average visibility in September
Bison, KS
- 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).
Bison, Kansas, USA
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