September weather forecast
Wappapello, MO

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Wappapello, Missouri, with an average temperature ranging between min 61.9°F (16.6°C) and max 81.7°F (27.6°C).

Temperature

In the transition to September, Wappapello observes a minor drop in the average high-temperature, shifting from a tropical 87.4°F (30.8°C) in August to a warm 81.7°F (27.6°C). In Wappapello, an average temperature of 61.9°F (16.6°C) is noted during September nights.

Heat index

The heat index in September is estimated at a hot 86°F (30°C). Fatigue might occur with continuous exposure and activity, potentially causing heat cramps.
Note that heat index values are valued for light wind and location in the shade. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.

Humidity

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

Rainfall

The month with the least rainfall is September, when the rain falls for 11.8 days and typically collects 1.77" (45mm) of precipitation.

Snowfall

April through September are months without snowfall.

Daylight

In September, the average length of the day is 12h and 24min.
On the first day of the month, sunrise is at 6:32 am and sunset at 7:29 pm. On the last day of September, sunrise is at 6:56 am and sunset at 6:45 pm CDT.

Sunshine

In Wappapello, Missouri, the average sunshine in September is 9.7h.

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 exposure to the Sun's UV radiation for the average person.
Note: In September, the UV index of 5 transforms into the following advice:
Undertake precautions - Guarding against sun damage is counselled. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Updated: Jul 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

September temperatures vary between a high-temperature of 81.7°F (27.6°C) and a low-temperature of 61.9°F (16.6°C). In September, the average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, is estimated at 86°F (30°C).

What is the average humidity in September?

In September, the average relative humidity is 73%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 11.8 days and accumulates 1.77" (45mm) of precipitation.

How much does it rain in September?

In Wappapello, during September, the rain falls for 11.8 days and regularly aggregates up to 1.77" (45mm) of precipitation.

When it does not snow?

April through September are months without snowfall.

Does it snow in September?

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

What is the average length of the day in September?

In Wappapello, Missouri, the average day length in September is 12h and 24min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:32 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:45 pm CDT.

How many hours of sunshine does Wappapello have in September?

The average sunshine duration in September is 9.7h.

What is the UV index reading in September?

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from 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
Wappapello, MO

Average temperature in September - Wappapello, MO
  • Average high temperature in September: 81.7°F

The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (42.1°F).

  • Average low temperature in September: 61.9°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (28°F).

Average pressure in September
Wappapello, MO

Average pressure in September - Wappapello, 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
Wappapello, MO

Average wind speed in September - Wappapello, MO
  • Average wind speed in September: 5.8mph

The windiest month (with the highest average wind speed) is February (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in September
Wappapello, MO

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

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (70%).

Average rainfall in September
Wappapello, MO

Average rainfall in September - Wappapello, MO
  • Average rainfall in September: 1.77"

The wettest month (with the highest rainfall) is April (4.8").
The driest month (with the least rainfall) is September (1.77").

Average rainfall days in September
Wappapello, MO

Average rainfall days in September - Wappapello, MO
  • Average rainfall days in September: 11.8 days

The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is January (9.6 days).

Average snowfall in September
Wappapello, MO

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

The month with the highest snowfall is February (1.69").
The months with the least snowfall are April, May, June, July, August and September (0").

Average snowfall days in September
Wappapello, MO

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

The month with the highest number of snowfall days is February (3.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

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

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

  • Average sunshine in September: 9h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in September
Wappapello, MO

Average sunshine days in September - Wappapello, MO
  • Average sunshine days in September: 15.6 days

The month with the most sunshine days is October (19.3 days).
The month with the least sunshine days is July (12.3 days).

Average UV index in September
Wappapello, MO

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

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

Average cloud cover in September
Wappapello, MO

Average cloud cover in September - Wappapello, MO
  • Average cloud cover in September: 28

The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 26).

Average visibility in September
Wappapello, MO

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

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

Wappapello, Missouri, USA

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