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
September's arrival signals a moderate reduction in the average high-temperature, easing from a tropical 90.7°F (32.6°C) in August to a warm 82.8°F (28.2°C). Throughout September, Arnold anticipates an average low-temperature of 61.7°F (16.5°C).Heat index
The heat index in September is computed to be 84.2°F (29°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.Heat index values are typically calculated for conditions of shade and a light breeze. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a numerical representation of warmth when taking temperature and moisture levels into account. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
Humidity
The average relative humidity in September is 56%.Rainfall
In Arnold, in September, it is raining for 10.4 days, with typically 1.22" (31mm) of accumulated precipitation. In Arnold, during the entire year, the rain falls for 104.4 days and collects up to 16.5" (419mm) of precipitation.Snowfall
May through September are months without snowfall in Arnold.Daylight
In Arnold, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 7:10 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 7:23 pm CDT.
Sunshine
The average sunshine in September is 9.1h.UV index
In Arnold, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: An average maximum UV index of 5 in September leads to these recommendations:
Be vigilant - Preventing sunburn is recommended. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
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?
How many hours of daylight does Arnold have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Arnold, KS
- Average high temperature in September: 82.8°F
The warmest month (with the highest average high temperature) is July (93.9°F).
The month with the lowest average high temperature is December (43.3°F).
- Average low temperature in September: 61.7°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
Arnold, KS
- 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 (29.83"Hg).
Average wind speed in September
Arnold, KS
- Average wind speed in September: 11.4mph
The windiest month (with the highest average wind speed) is April (13mph).
The calmest month (with the lowest average wind speed) is August (10.2mph).
Average humidity in September
Arnold, KS
- Average humidity in September: 56%
The months with the highest relative humidity are January and December (63%).
The month with the lowest relative humidity is July (52%).
Average rainfall in September
Arnold, KS
- Average rainfall in September: 1.22"
The wettest month (with the highest rainfall) is May (2.68").
The driest month (with the least rainfall) is November (0.43").
Average rainfall days in September
Arnold, KS
- Average rainfall days in September: 10.4 days
The month with the highest number of rainy days is July (13.9 days).
The month with the least rainy days is January (3 days).
Average snowfall in September
Arnold, KS
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.4").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Arnold, 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
Arnold, 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 1min
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 24min).
Average sunshine days in September
Arnold, KS
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is November (24.1 days).
The month with the least sunshine days is July (12.6 days).
Average UV index in September
Arnold, 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
Arnold, KS
- Average cloud cover in September: 21
The months with the most cloud cover are February and April (Cloud cover 32).
The month with the least cloud cover is June (Cloud cover 18).
Average visibility in September
Arnold, 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).
Arnold, Kansas, USA
Weather forecast for your location
2. Allow the app to use your location