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
A mild shift in the average high-temperature occurs in September, reducing from a hot 89.6°F (32°C) in August to a moderately hot 81.5°F (27.5°C). Sylvia experiences a mean low-temperature of 62.1°F (16.7°C) during September.Heat index
The average heat index in September is calculated to be 84.2°F (29°C). If one remains active during constant exposure, it might cause exhaustion and heat cramps.Data suggests that the heat index is set for environments in shade and with a light wind. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humidity
In September, the average relative humidity is 64%.Rainfall
In Sylvia, in September, during 11.6 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. In Sylvia, during the entire year, the rain falls for 112.9 days and collects up to 21.06" (535mm) of precipitation.Snowfall
In Sylvia, snow does not fall in May through September.Daylight
In Sylvia, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 7:04 am and sunset at 8:02 pm. On the last day of September, sunrise is at 7:29 am and sunset at 7:17 pm CDT.
Sunshine
In Sylvia, the average sunshine in September is 8.9h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Sylvia in September?
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 Sylvia have 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
Sylvia, KS
- Average high temperature in September: 81.5°F
The warmest month (with the highest average high temperature) is July (92.1°F).
The month with the lowest average high temperature is January (42.4°F).
- Average low temperature in September: 62.1°F
The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in September
Sylvia, 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
Sylvia, KS
- Average wind speed in September: 10.6mph
The windiest month (with the highest average wind speed) is April (12.9mph).
The calmest month (with the lowest average wind speed) is August (9.3mph).
Average humidity in September
Sylvia, KS
- Average humidity in September: 64%
The month with the highest relative humidity is May (69%).
The month with the lowest relative humidity is July (59%).
Average rainfall in September
Sylvia, KS
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is May (3.82").
The driest months (with the least rainfall) are January and February (0.67").
Average rainfall days in September
Sylvia, KS
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is January (2.7 days).
Average snowfall in September
Sylvia, KS
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.36").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Sylvia, 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
Sylvia, 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 36min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is January (Average sunshine: 6h and 12min).
Average sunshine days in September
Sylvia, KS
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is December (23.9 days).
The month with the least sunshine days is July (13.2 days).
Average UV index in September
Sylvia, 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
Sylvia, KS
- Average cloud cover in September: 24
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is June (Cloud cover 20).
Average visibility in September
Sylvia, 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).
Sylvia, Kansas, USA
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