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
With the onset of September, Lewis experiences a modest temperature adjustment, with the average high-temperature gently receding from a tropical 90.3°F (32.4°C) in August to a warm 82.8°F (28.2°C). During September, Lewis experiences an average low-temperature of 61.7°F (16.5°C) at night.Heat index
September's heat index is estimated at a hot 86°F (30°C). Persistent activity under exposure might lead to a feeling of weariness, with subsequent heat cramps.In terms of the heat index, values are set with light wind and shade conditions in mind. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', blends air temperature and moisture content to represent the felt temperature to humans. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humidity
The average relative humidity in September in Lewis is 60%.Rainfall
In September, in Lewis, the rain falls for 9.9 days. Throughout September, 1.1" (28mm) of precipitation is accumulated. Throughout the year, in Lewis, there are 93.5 rainfall days, and 15.63" (397mm) of precipitation is accumulated.Snowfall
In Lewis, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 7:07 am and sunset at 8:05 pm. On the last day of September, sunrise is at 7:32 am and sunset at 7:21 pm CDT.
Sunshine
In Lewis, the average sunshine in September is 9h.UV index
In Lewis, Kansas, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A maximum high UV index of 5 in September translates into the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Frequently asked questions
How hot does it get in Lewis in September?
What is the average humidity in September in Lewis?
How much does it rain in Lewis in September?
When it does not snow in Lewis?
Does it snow in Lewis in September?
What is the average length of the day in September in Lewis?
What time are sunrise and sunset in September in Lewis?
How many hours of sunshine does Lewis have in September?
What is the UV index reading in September in Lewis?
Average temperature in September
Lewis, KS
- Average high temperature in September: 82.8°F
The warmest month (with the highest average high temperature) is July (93°F).
The month with the lowest average high temperature is December (43.9°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 (26.4°F).
Average pressure in September
Lewis, KS
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Lewis, KS
- Average wind speed in September: 11.2mph
The windiest month (with the highest average wind speed) is April (13.2mph).
The calmest month (with the lowest average wind speed) is August (9.9mph).
Average humidity in September
Lewis, KS
- Average humidity in September: 60%
The month with the highest relative humidity is December (64%).
The month with the lowest relative humidity is July (55%).
Average rainfall in September
Lewis, KS
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is May (2.95").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in September
Lewis, KS
- Average rainfall days in September: 9.9 days
The month with the highest number of rainy days is May (12.3 days).
The month with the least rainy days is December (2.6 days).
Average snowfall in September
Lewis, KS
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.24").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Lewis, KS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.8 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
Lewis, 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: 9h and 0min
The month with the most sunshine is June (Average sunshine: 11h and 30min).
The months with the least sunshine are January and December (Average sunshine: 6h and 24min).
Average sunshine days in September
Lewis, KS
- Average sunshine days in September: 17.9 days
The month with the most sunshine days is December (25.6 days).
The month with the least sunshine days is May (16.3 days).
Average UV index in September
Lewis, 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
Lewis, KS
- Average cloud cover in September: 23
The month with the most cloud cover is April (Cloud cover 33).
The month with the least cloud cover is June (Cloud cover 18).
Average visibility in September
Lewis, 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).
Lewis, Kansas, USA
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