September weather forecast
Lyons, KS

Weather in September

The first month of the autumn, September, is still a warm month in Lyons, Kansas, with temperature in the range of an average low of 61.9°F (16.6°C) and an average high of 81.5°F (27.5°C).

Temperature

In Lyons, the average high-temperature marginally drops, from a hot 89.2°F (31.8°C) in August, to a moderately hot 81.5°F (27.5°C). The average low-temperature, in Lyons, is 61.9°F (16.6°C).

Heat index

In September, the average heat index is estimated at 84.4°F (29.1°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'real feel', or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like metabolic differences, differences in body mass, height, and shape, pregnancy, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In September, the average relative humidity is 64%.

Rainfall

In September, the rain falls for 11.8 days. Throughout September, 1.93" (49mm) of precipitation is accumulated. In Lyons, Kansas, during the entire year, the rain falls for 115.5 days and collects up to 21.77" (553mm) of precipitation.

Snowfall

In Lyons snow does not fall in May through September.

Daylight

In September, the average length of the day in Lyons is 12.4h.

Sunshine

The average sunshine in Lyons is 8.9h.

UV index

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Lyons?

The average high-temperature, in September, in Lyons, Kansas, is 81.5°F (27.5°C), while the average low-temperature is 61.9°F (16.6°C). The average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in September is estimated at 84.4°F (29.1°C).

What is the average humidity in September in Lyons?

In September, the average relative humidity in Lyons, Kansas, is 64%.

How many days does it rain in September in Lyons?

In Lyons, in September, during 11.8 rainfall days, 1.93" (49mm) of precipitation is typically accumulated.

When it does not snow in Lyons?

May through September are months without snowfall.

Does it snow in Lyons in September?

In Lyons, Kansas, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Lyons have in September?

In September, the average length of the day in Lyons is 12.4h.

How many hours of sunshine does Lyons have in September?

The average sunshine in September in Lyons is 8.9h.

What is the UV index intensity in September in Lyons?

The average daily maximum UV index in September in Lyons is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV rays.

Average temperature in September
Lyons, KS

Average temperature in September - Lyons, 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 (41.9°F).

  • Average low temperature in September: 61.9°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).

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Average pressure in September
Lyons, KS

Average pressure in September - Lyons, KS
  • Average pressure in September: 29.98"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.85").

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Average wind speed in September
Lyons, KS

Average wind speed in September - Lyons, 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).

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Average humidity in September
Lyons, KS

Average humidity in September - Lyons, 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%).

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Average rainfall in September
Lyons, KS

Average rainfall in September - Lyons, KS
  • Average rainfall in September: 1.93"

The wettest month (with the highest rainfall) is May (3.82").
The driest month (with the least rainfall) is January (0.75").

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Average rainfall days in September
Lyons, KS

Average rainfall days in September - Lyons, KS
  • Average rainfall days in September: 11.8 days

The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is January (3.1 days).

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Average snowfall in September
Lyons, KS

Average snowfall in September - Lyons, KS
  • Average snowfall in September: 0"

The month with the highest snowfall is February (2.83").
Months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Lyons, KS

Average snowfall days in September - Lyons, KS
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (4.8 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Lyons, KS

Average daylight in September / Average sunshine in September - Lyons, KS
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in September: 8.9h

The month with the most sunshine is July (Average sunshine: 11.2h).
Months with the least sunshine are January and December (Average sunshine: 6.2).

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Average sunshine days in September
Lyons, KS

Average sunshine days in September - Lyons, KS
  • Average sunshine days in September: 15.7 days

The month with the most sunshine days is January (23.1 days).
The month with the least sunshine days is May (13.4 days).

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Average UV index in September
Lyons, KS

Average UV index in September - Lyons, KS
  • Average UV index in September: 5

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, November and December (UV index 2).

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Average cloud cover in September
Lyons, KS

Average cloud cover in September - Lyons, KS
  • Average cloud cover in September: 24

The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is June (Cloud cover 20).

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Average visibility in September
Lyons, KS

Average visibility in September - Lyons, KS
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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