September weather forecast and climate
Willis, KS

September, the first month of the autumn, in Willis, is also a moderately hot month, with average temperature ranging between min 58.8°F (14.9°C) and max 78.4°F (25.8°C).

Temperature

In Willis, the average high-temperature in September marginally drops, from a moderately hot 84.6°F (29.2°C) in August, to a still warm 78.4°F (25.8°C). The average low-temperature, in Willis, is 58.8°F (14.9°C).

Humidity

In September, the average relative humidity is 73%.

Rainfall

In Willis, it is raining for 11.8 days, with typically 2.13" (54mm) of accumulated precipitation. In Willis, Kansas, during the entire year, the rain falls for 123.6 days and collects up to 25.47" (647mm) of precipitation.

Snowfall

In Willis snow does not fall in June through September.

Daylight

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

Sunshine

In September, the average sunshine in Willis is 9.1h.

UV index

The average daily maximum UV index in Willis, Kansas, is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to the UV radiation for ordinary individuals.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Willis?

In Willis, in September, the average high-temperature is 78.4°F (25.8°C), and the average low-temperature is 58.8°F (14.9°C).

What is the average humidity in September in Willis?

In September, the average relative humidity in Willis is 73%.

How many days does it rain in September in Willis?

In September, the rain falls for 11.8 days. Throughout September, 2.13" (54mm) of precipitation is accumulated.

Does it snow in Willis in September?

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

When it does not snow in Willis?

In Willis snow does not fall in June through September.

What is the average length of the day in September in Willis?

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

How many hours of sunshine does Willis have in September?

In Willis, the average sunshine in September is 9.1h.

What is the UV index intensity in September in Willis?

In September, the average daily maximum UV index in Willis is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in September - Willis, KS
  • Average high temperature in September: 78.4°F

The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in September: 58.8°F

The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).

Average pressure in September - Willis, KS
  • Average pressure in September: 30"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.87").

Average wind speed in September - Willis, KS
  • Average wind speed in September: 7.9mph

The windiest months (with the highest average wind speed) are March and April (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).

Average humidity in September - Willis, KS
  • Average humidity in September: 73%

The month with the highest relative humidity is June (77%).
The month with the lowest relative humidity is October (67%).

Average rainfall in September - Willis, KS
  • Average rainfall in September: 2.13"

The wettest month (with the highest rainfall) is May (3.82").
The driest month (with the least rainfall) is February (0.71").

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

The month with the highest number of rainy days is May (16 days).
The month with the least rainy days is January (4.2 days).

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

The month with the highest snowfall is January (2.56").
Months with the least snowfall are June, July, August and September (0").

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

The month with the highest number of snowfall days is January (6.3 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in September: 9.1h

Months with the most sunshine are June and July (Average sunshine: 10.4h).
The month with the least sunshine is January (Average sunshine: 5.2h).

Average sunshine days in September - Willis, KS
  • Average sunshine days in September: 17.4 days

The month with the most sunshine days is December (21.5 days).
The month with the least sunshine days is May (12.8 days).

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

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in September - Willis, KS
  • Average cloud cover in September: 28

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 26).

Average visibility in September - Willis, 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).