September weather forecastDeerfield, KS
September
Weather in September
The first month of the autumn, September, is still a warm month in Deerfield, Kansas, with temperature in the range of an average low of 61°F (16.1°C) and an average high of 83.8°F (28.8°C).Temperature
Deerfield's September weather shows a modest shift in high-temperatures, falling from August's hot 91°F (32.8°C) to a moderately hot 83.8°F (28.8°C). In the month of September, Deerfield witnesses a marked temperature drop at night, averaging a low of 61°F (16.1°C).Heat index
In September, the average heat index is evaluated at a tropical 86°F (30°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.It is essential to grasp that the heat index's numbers are for shade and light wind settings. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is the result of factoring in humidity to the air temperature, indicating perceived warmth. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Humidity
The average relative humidity in September is 53%.Rainfall
In Deerfield, during September, the rain falls for 7.9 days and regularly aggregates up to 0.79" (20mm) of precipitation. In Deerfield, during the entire year, the rain falls for 86.3 days and collects up to 12.76" (324mm) of precipitation.Snowfall
May through September are months without snowfall in Deerfield.Daylight
In Deerfield, the average length of the day in September is 12h and 25min.On the first day of September in Deerfield, Kansas, sunrise is at 7:15 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 7:28 pm CDT.
Sunshine
In September, the average sunshine in Deerfield is 9.2h.UV index
In Deerfield, Kansas, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 5 during September translates into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. To protect against the Sun's most potent rays, avoid direct exposure around midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Deerfield, KS
- Average high temperature in September: 83.8°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 (44.4°F).
- Average low temperature in September: 61°F
The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is December (26.8°F).
Average pressure in September
Deerfield, KS
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.8"Hg).
Average wind speed in September
Deerfield, KS
- Average wind speed in September: 11.4mph
The windiest month (with the highest average wind speed) is April (12.8mph).
The calmest month (with the lowest average wind speed) is August (10.1mph).
Average humidity in September
Deerfield, KS
- Average humidity in September: 53%
The month with the highest relative humidity is January (61%).
The month with the lowest relative humidity is June (48%).
Average rainfall in September
Deerfield, KS
- Average rainfall in September: 0.79"
The wettest month (with the highest rainfall) is May (1.97").
The driest month (with the least rainfall) is November (0.28").
Average rainfall days in September
Deerfield, KS
- Average rainfall days in September: 7.9 days
The month with the highest number of rainy days is July (11.7 days).
The month with the least rainy days is November (2.3 days).
Average snowfall in September
Deerfield, KS
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.77").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Deerfield, KS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.8 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
Deerfield, KS
- Average daylight in September: 12h and 24min
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 36min).
- Average sunshine in September: 9h and 12min
The month with the most sunshine is June (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in September
Deerfield, KS
- Average sunshine days in September: 20.8 days
The month with the most sunshine days is November (25.5 days).
The month with the least sunshine days is July (15.2 days).
Average UV index in September
Deerfield, KS
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in September
Deerfield, KS
- Average cloud cover in September: 20
The month with the most cloud cover is April (Cloud cover 31).
The month with the least cloud cover is June (Cloud cover 17).
Average visibility in September
Deerfield, 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).
