September weather forecast and climate
Overland Park, KS

A large pond with scenic trees in neat lawns out front within the arboretum in Overland Park, Kansas
A large pond with scenic trees in neat lawns out front within the arboretum in Overland Park, Kansas
The first month of the autumn, September, is still a warm month in Overland Park, Kansas, with average temperature ranging between min 59.7°F (15.4°C) and max 78.4°F (25.8°C).

Temperature

In September, the average high-temperature marginally drops, from a warm 84.9°F (29.4°C) in August, to a still moderately hot 78.4°F (25.8°C). In September, the average low-temperature is 59.7°F (15.4°C).

Humidity

The average relative humidity in September is 74%.

Rainfall

In Overland Park, in September, it is raining for 5.5 days, with typically 0.31" (8mm) of accumulated precipitation. In Overland Park, Kansas, during the entire year, the rain falls for 62.3 days and collects up to 4.76" (121mm) of precipitation.

Snowfall

April, June through September are months without snowfall in Overland Park, Kansas.

Daylight

The average length of the day in Overland Park is 12.4h.

Sunshine

In September, the average sunshine is 9.3h.

UV index

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to the UV radiation for the ordinary person.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Overland Park?

The average high-temperature, in September, is 78.4°F (25.8°C), while the average low-temperature is 59.7°F (15.4°C).

What is the average humidity in September in Overland Park?

In Overland Park, Kansas, the average relative humidity in September is 74%.

How much does it rain in Overland Park in September?

In Overland Park, in September, it is raining for 5.5 days, with typically 0.31" (8mm) of accumulated precipitation.

Does it snow in Overland Park in September?

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

When it does not snow in Overland Park?

In Overland Park, Kansas, snow does not fall in April, June through September.

How many hours of daylight does Overland Park have in September?

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

How long on average sun shines in September in Overland Park?

The average sunshine in September is 9.3h.

What is the UV index intensity in September in Overland Park?

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

The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (37.4°F).

  • Average low temperature in September: 59.7°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).

Average pressure in September - Overland Park, KS
  • Average pressure in September: 30.01"

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.89").

Average wind speed in September - Overland Park, KS
  • Average wind speed in September: 7.2mph

The windiest months (with the highest average wind speed) are March and April (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).

Average humidity in September - Overland Park, KS
  • Average humidity in September: 74%

Months with the highest relative humidity are May and June (78%).
The month with the lowest relative humidity is October (69%).

Average rainfall in September - Overland Park, KS
  • Average rainfall in September: 0.31"

The wettest month (with the highest rainfall) is May (0.71").
The driest month (with the least rainfall) is November (0.16").

Average rainfall days in September - Overland Park, KS
  • Average rainfall days in September: 5.5 days

Months with the highest number of rainy days are May and July (8.3 days).
The month with the least rainy days is January (2.2 days).

Average snowfall in September - Overland Park, KS
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.39").
Months with the least snowfall are April, June, July, August and September (0").

Average snowfall days in September - Overland Park, KS
  • Average snowfall days in September: 0 days

Months with the highest number of snowfall days are January and February (2.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in September: 9.3h

The month with the most sunshine is July (Average sunshine: 10.5h).
The month with the least sunshine is January (Average sunshine: 5.1h).

Average sunshine days in September - Overland Park, KS
  • Average sunshine days in September: 22.9 days

The month with the most sunshine days is January (27.3 days).
The month with the least sunshine days is May (19.7 days).

Average UV index in September - Overland Park, 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 - Overland Park, KS
  • Average cloud cover in September: 29

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 25).

Average visibility in September - Overland Park, 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).