September weather forecast and climate
Plains, KS

September, the first month of the autumn, in Plains, is also a moderately hot month, with average temperature varying between 63.1°F (17.3°C) and 84.2°F (29°C).

Temperature

In Plains, the average high-temperature marginally drops, from a tropical 91.6°F (33.1°C) in August, to a moderately hot 84.2°F (29°C). In Plains, Kansas, the average low-temperature is 63.1°F (17.3°C).

Heat index

The average heat index in September is estimated at a tropical 86.4°F (30.2°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'real feel', or 'feels like', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is individual, with diverse people perceiving weather differently for numerous reasons (differences in body mass, height, and shape, pregnancy, wind), and activity. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In Plains, the average relative humidity is 54%.

Rainfall

In September, in Plains, the rain falls for 9.1 days. Throughout September, 0.98" (25mm) of precipitation is accumulated. Throughout the year, in Plains, Kansas, there are 93.1 rainfall days, and 15.16" (385mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Plains.

Daylight

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

Sunshine

In September, the average sunshine is 9.3h.

UV index

In Plains, Kansas, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV rays for the ordinary person.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
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. 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.

What is the temperature in September in Plains?

In Plains, in September, the average high-temperature is 84.2°F (29°C), and the average low-temperature is 63.1°F (17.3°C). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), that calculates temperature value influenced by the moisture in the air, is calculated to 86.4°F (30.2°C).

What is the average humidity in September in Plains?

In Plains, the average relative humidity in September is 54%.

How many days does it rain in September in Plains?

In Plains, during September, the rain falls for 9.1 days and regularly aggregates up to 0.98" (25mm) of precipitation.

When it does not snow in Plains?

May through October are months without snowfall.

How many hours of daylight does Plains have in September?

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

How long on average sun shines in September in Plains?

The average sunshine in September is 9.3h.

How high is the UV index in September in Plains?

In Plains, Kansas, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from the exposure to the Sun's UV rays.
Average temperature in September - Plains, KS
  • Average high temperature in September: 84.2°F

The warmest month (with the highest average high temperature) is July (94.3°F).
The month with the lowest average high temperature is December (45.5°F).

  • Average low temperature in September: 63.1°F

The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (28°F).

Average pressure in September - Plains, KS
  • Average pressure in September: 29.96"

The month with the highest atmospheric pressure is January (30.15").
The month with the lowest atmospheric pressure is June (29.83").

Average wind speed in September - Plains, KS
  • Average wind speed in September: 11.4mph

The windiest month (with the highest average wind speed) is April (13.2mph).
The calmest month (with the lowest average wind speed) is August (10.3mph).

Average humidity in September - Plains, KS
  • Average humidity in September: 54%

The month with the highest relative humidity is December (60%).
Months with the lowest relative humidity are June and July (50%).

Average rainfall in September - Plains, KS
  • Average rainfall in September: 0.98"

The wettest month (with the highest rainfall) is May (2.36").
The driest month (with the least rainfall) is November (0.35").

Average rainfall days in September - Plains, KS
  • Average rainfall days in September: 9.1 days

Months with the highest number of rainy days are July and August (13.5 days).
The month with the least rainy days is January (2.1 days).

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

Months with the highest snowfall are January and February (1.42").
Months with the least snowfall are May, June, July, August, September and October (0").

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

The month with the highest number of snowfall days is February (3.8 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

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

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in September: 9.3h

The month with the most sunshine is June (Average sunshine: 11.7h).
The month with the least sunshine is December (Average sunshine: 6.7h).

Average sunshine days in September - Plains, KS
  • Average sunshine days in September: 17.3 days

The month with the most sunshine days is January (27.3 days).
The month with the least sunshine days is August (13 days).

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

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

Average cloud cover in September - Plains, KS
  • Average cloud cover in September: 20

Months with the most cloud cover are February and April (Cloud cover 28).
The month with the least cloud cover is June (Cloud cover 16).

Average visibility in September - Plains, 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).