September weather forecastSylvan Grove, KS
September
Weather in September
September, the first month of the autumn in Sylvan Grove, is still a warm month, with an average temperature fluctuating between 61.3°F (16.3°C) and 81.5°F (27.5°C).Temperature
As August transitions into September, Sylvan Grove sees a gentle drop in the average high-temperature, transitioning from a tropical 89.6°F (32°C) to a warm 81.5°F (27.5°C). During September, the nighttime temperature in Sylvan Grove averages to a refreshing 61.3°F (16.3°C).Heat index
September's mean heat index is computed to be 84.2°F (29°C). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.Heat index determinations are made taking into account the shade and light air movements. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', comes about by integrating the temperature readings with the humidity levels. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Humidity
The average relative humidity in September is 64%.Rainfall
In Sylvan Grove, in September, during 9.3 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. In Sylvan Grove, during the entire year, the rain falls for 91.6 days and collects up to 12.13" (308mm) of precipitation.Snowfall
In Sylvan Grove, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 26min.On the first day of September, sunrise is at 7:03 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 7:17 pm CDT.
Sunshine
The average sunshine in September is 8.9h.UV index
In Sylvan Grove, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: During September, 5 as the daily maximum UV index converts into the following advice:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sylvan Grove, KS
- Average high temperature in September: 81.5°F
The warmest month (with the highest average high temperature) is July (92.5°F).
The month with the lowest average high temperature is January (41.4°F).
- Average low temperature in September: 61.3°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 (25.2°F).
Average pressure in September
Sylvan Grove, 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 (29.85"Hg).
Average wind speed in September
Sylvan Grove, KS
- Average wind speed in September: 10.4mph
The windiest month (with the highest average wind speed) is April (12.5mph).
The calmest month (with the lowest average wind speed) is August (9.2mph).
Average humidity in September
Sylvan Grove, KS
- Average humidity in September: 64%
The months with the highest relative humidity are May and December (69%).
The month with the lowest relative humidity is July (59%).
Average rainfall in September
Sylvan Grove, KS
- Average rainfall in September: 0.98"
The wettest month (with the highest rainfall) is May (2.13").
The driest month (with the least rainfall) is January (0.31").
Average rainfall days in September
Sylvan Grove, KS
- Average rainfall days in September: 9.3 days
The month with the highest number of rainy days is July (12 days).
The month with the least rainy days is January (3 days).
Average snowfall in September
Sylvan Grove, KS
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.42").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Sylvan Grove, KS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sylvan Grove, KS
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days in September
Sylvan Grove, KS
- Average sunshine days in September: 17.7 days
The month with the most sunshine days is January (25.3 days).
The month with the least sunshine days is July (14.8 days).
Average UV index in September
Sylvan Grove, 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, November and December (UV index 2).
Average cloud cover in September
Sylvan Grove, KS
- Average cloud cover in September: 24
The months with the most cloud cover are February and March (Cloud cover 36).
The month with the least cloud cover is June (Cloud cover 20).
Average visibility in September
Sylvan Grove, 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).
