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
Grenola experiences a moderate temperature shift at the start of September, with average high-temperatures adjusting a bit from a tropical 89.2°F (31.8°C) in August to a warm 81.7°F (27.6°C). Grenola records a mean low-temperature of 62.8°F (17.1°C) in September.Heat index
The average heat index in September is evaluated at a hot 86°F (30°C). Persistently participating in activities during exposure may lead to fatigue and induce heat cramps.Factoring in the heat index, values are geared towards shaded areas with light breezes. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an estimation of the warmth sensation when considering humidity levels. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Humidity
In September, the average relative humidity is 68%.Rainfall
In Grenola, in September, it is raining for 11.7 days, with typically 2.24" (57mm) of accumulated precipitation. Throughout the year, there are 117.5 rainfall days, and 23.15" (588mm) of precipitation is accumulated.Snowfall
April through September are months without snowfall.Daylight
The average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:56 am and sunset at 7:54 pm. On the last day of September, sunrise is at 7:21 am and sunset at 7:10 pm CDT.
Sunshine
The average sunshine in September is 8.7h.UV index
In September, the average daily maximum UV index 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: The maximum daily UV index of 5 in September interprets into the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Grenola 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
Grenola, KS
- Average high temperature in September: 81.7°F
The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (43.7°F).
- Average low temperature in September: 62.8°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 (27.1°F).
Average pressure in September
Grenola, KS
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Grenola, KS
- Average wind speed in September: 9.3mph
The windiest month (with the highest average wind speed) is April (12.1mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in September
Grenola, KS
- Average humidity in September: 68%
The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is October (65%).
Average rainfall in September
Grenola, KS
- Average rainfall in September: 2.24"
The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is December (0.59").
Average rainfall days in September
Grenola, KS
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is January (3.8 days).
Average snowfall in September
Grenola, KS
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.57").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in September
Grenola, KS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.3 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
Grenola, KS
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 0min).
Average sunshine days in September
Grenola, KS
- Average sunshine days in September: 16 days
The months with the most sunshine days are January and December (24.2 days).
The month with the least sunshine days is July (14.3 days).
Average UV index in September
Grenola, 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, February and December (UV index 2).
Average cloud cover in September
Grenola, KS
- Average cloud cover in September: 26
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Grenola, 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).
Grenola, Kansas, USA
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