September weather forecast
Koshkonong, MO

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Weather in September

September, the first month of the autumn in Koshkonong, is also a moderately hot month, with temperature in the range of an average high of 81.9°F (27.7°C) and an average low of 60.8°F (16°C).

Temperature

In Koshkonong, entering September brings a subtle temperature decrement, reducing from August's tropical 88.3°F (31.3°C) to a moderately hot 81.9°F (27.7°C). Koshkonong experiences an average temperature drop to a refreshing 60.8°F (16°C) during September nights.

Heat index

During September, the heat index is calculated to be a tropical 86°F (30°C). With unrelenting exposure and activity, one might experience exhaustion, leading to potential heat cramps.
Heat index readings emphasize conditions of light breezes and shaded spots. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.

Humidity

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

Rainfall

September is the month with the least rainfall in Koshkonong, Missouri. Rain falls for 12 days and accumulates 1.57" (40mm) of precipitation.

Snowfall

In Koshkonong, snow does not fall in May through October.

Daylight

In Koshkonong, the average length of the day in September is 12h and 24min.
On the first day of the month, sunrise is at 6:38 am and sunset at 7:34 pm. On the last day of September, in Koshkonong, sunrise is at 7:01 am and sunset at 6:51 pm CDT.

Sunshine

In Koshkonong, the average sunshine in September is 9.4h.

UV index

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The maximum UV index of 5 during September translates into these guidelines:
Take precautions - Protection against sun damage is advised. When the Sun is at its strongest around midday, find shade and limit exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Koshkonong in September?

The average high-temperature, in September, in Koshkonong, is 81.9°F (27.7°C), while the average low-temperature is 60.8°F (16°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in September is calculated to be 86°F (30°C).

What is the average humidity in September in Koshkonong?

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

What is the driest month in Koshkonong?

The month with the least rainfall is September, when the rain falls for 12 days and typically collects 1.57" (40mm) of precipitation.

How many days does it rain in September in Koshkonong?

In Koshkonong, Missouri, during September, the rain falls for 12 days and regularly aggregates up to 1.57" (40mm) of precipitation.

When it does not snow in Koshkonong?

May through October are months without snowfall in Koshkonong, Missouri.

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

The average day length in September is 12h and 24min.

When is the sunrise / sunset in September in Koshkonong?

In September, on the first day of the month, sunrise is at 6:38 am and sunset at 7:34 pm. On the last day of the month, in Koshkonong, Missouri, sunrise is at 7:01 am and sunset at 6:51 pm CDT.

How many hours of sunshine does Koshkonong have in September?

In September, the average sunshine duration in Koshkonong is 9.4h.

What is the UV index reading in September in Koshkonong?

In September, the average daily maximum UV index in Koshkonong is 5. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Koshkonong, MO

Average temperature in September - Koshkonong, MO
  • Average high temperature in September: 81.9°F

The warmest month (with the highest average high temperature) is July (89.4°F).
The month with the lowest average high temperature is January (43.3°F).

  • Average low temperature in September: 60.8°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).

Average pressure in September
Koshkonong, MO

Average pressure in September - Koshkonong, MO
  • Average pressure in September: 30.02"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in September
Koshkonong, MO

Average wind speed in September - Koshkonong, MO
  • Average wind speed in September: 5.7mph

The windiest months (with the highest average wind speed) are January, February, March and April (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).

Average humidity in September
Koshkonong, MO

Average humidity in September - Koshkonong, MO
  • Average humidity in September: 73%

The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September
Koshkonong, MO

Average rainfall in September - Koshkonong, MO
  • Average rainfall in September: 1.57"

The wettest month (with the highest rainfall) is May (4.25").
The driest month (with the least rainfall) is September (1.57").

Average rainfall days in September
Koshkonong, MO

Average rainfall days in September - Koshkonong, MO
  • Average rainfall days in September: 12 days

The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is January (8.6 days).

Average snowfall in September
Koshkonong, MO

Average snowfall in September - Koshkonong, MO
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.26").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Koshkonong, MO

Average snowfall days in September - Koshkonong, MO
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Koshkonong, MO

Average daylight in September / Average sunshine in September - Koshkonong, MO
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in September: 9h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in September
Koshkonong, MO

Average sunshine days in September - Koshkonong, MO
  • Average sunshine days in September: 16.5 days

The month with the most sunshine days is December (19.6 days).
The month with the least sunshine days is May (12.3 days).

Average UV index in September
Koshkonong, MO

Average UV index in September - Koshkonong, MO
  • Average UV index in September: 5

The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January and December (UV index 2).

Average cloud cover in September
Koshkonong, MO

Average cloud cover in September - Koshkonong, MO
  • Average cloud cover in September: 31

The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 29).

Average visibility in September
Koshkonong, MO

Average visibility in September - Koshkonong, MO
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are May and July (5mi).

Koshkonong, Missouri, USA

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