September weather forecast and climate
Winona, KS

The first month of the autumn, September, is also a moderately hot month in Winona, Kansas, with average temperature varying between 60.4°F (15.8°C) and 81.9°F (27.7°C).

Temperature

In September, the average high-temperature slightly decreases, from a tropical 89.2°F (31.8°C) in August, to a warm 81.9°F (27.7°C). In September, the average low-temperature is 60.4°F (15.8°C).

Heat index

The average heat index in September is estimated at 83.1°F (28.4°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'felt air temperature', or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (wind, differences in body mass, height, and shape, pregnancy), 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 especially crucial for babies and toddlers. 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 in Winona is 53%.

Rainfall

In Winona, during September, the rain falls for 9.5 days and regularly aggregates up to 1.1" (28mm) of precipitation. Throughout the year, in Winona, Kansas, there are 105.4 rainfall days, and 13.7" (348mm) of precipitation is accumulated.

Snowfall

In Winona snow does not fall in May through September.

Daylight

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

Sunshine

The average sunshine in Winona is 9.2h.

UV index

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to the UV radiation for the average person.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Winona?

In Winona, Kansas, in September, the average high-temperature is 81.9°F (27.7°C), and the average low-temperature is 60.4°F (15.8°C). In September, the average heat index (a.k.a. 'feels like', 'real feel'), that represents influence of the relative humidity to air temperaure, is appraised at 83.1°F (28.4°C).

What is the average humidity in September in Winona?

In Winona, the average relative humidity in September is 53%.

How much does it rain in Winona in September?

In Winona, Kansas, in September, it is raining for 9.5 days, with typically 1.1" (28mm) of accumulated precipitation.

Does it snow in Winona in September?

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

When it does not snow in Winona?

May through September are months without snowfall in Winona.

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

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

How long on average sun shines in September in Winona?

The average sunshine in September is 9.2h.

What is the UV index intensity in September in Winona?

The average daily maximum UV index in September in Winona is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in September - Winona, KS
  • Average high temperature in September: 81.9°F

The warmest month (with the highest average high temperature) is July (92.5°F).
The month with the lowest average high temperature is December (41.9°F).

  • Average low temperature in September: 60.4°F

The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

Average pressure in September - Winona, KS
  • Average pressure in September: 29.94"

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is June (29.81").

Average wind speed in September - Winona, KS
  • Average wind speed in September: 11.2mph

The windiest month (with the highest average wind speed) is April (12.9mph).
The calmest month (with the lowest average wind speed) is August (10.1mph).

Average humidity in September - Winona, KS
  • Average humidity in September: 53%

Months with the highest relative humidity are January and December (63%).
The month with the lowest relative humidity is July (50%).

Average rainfall in September - Winona, KS
  • Average rainfall in September: 1.1"

The wettest month (with the highest rainfall) is May (2.36").
The driest months (with the least rainfall) are January and November (0.39").

Average rainfall days in September - Winona, KS
  • Average rainfall days in September: 9.5 days

The month with the highest number of rainy days is May (13.4 days).
The month with the least rainy days is November (4 days).

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

The month with the highest snowfall is December (1.06").
Months with the least snowfall are May, June, July, August and September (0").

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

The month with the highest number of snowfall days is February (3.9 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in September / Average sunshine in September - Winona, 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: 9.2h

Months with the most sunshine are June and July (Average sunshine: 11.6h).
The month with the least sunshine is December (Average sunshine: 6.5h).

Average sunshine days in September - Winona, KS
  • Average sunshine days in September: 18 days

The month with the most sunshine days is December (23.7 days).
Months with the least sunshine days are June and July (14.7 days).

Average UV index in September - Winona, 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, February, November and December (UV index 2).

Average cloud cover in September - Winona, KS
  • Average cloud cover in September: 19

Months with the most cloud cover are February and April (Cloud cover 31).
The month with the least cloud cover is June (Cloud cover 17).

Average visibility in September - Winona, 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).