September weather forecast
Oakville, MO

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Weather in September

September, the first month of the autumn in Oakville, is still a warm month, with an average temperature varying between 79.7°F (26.5°C) and 59.9°F (15.5°C).

Temperature

With September's onset, the weather reveals a slight temperature decrease, transitioning from 85.6°F (29.8°C) in August to a still warm 79.7°F (26.5°C). Oakville, during the month of September, experiences an average low-temperature of 59.9°F (15.5°C).

Humidity

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

Rainfall

In Oakville, in September, it is raining for 12.6 days, with typically 2.13" (54mm) of accumulated precipitation. Throughout the year, there are 146.1 rainfall days, and 32.36" (822mm) of precipitation is accumulated.

Snowfall

In Oakville, snow does not fall in April through October.

Daylight

In September, the average length of the day is 12h and 25min.
On the first day of September in Oakville, Missouri, sunrise is at 6:31 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:45 pm CDT.

Sunshine

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 moderate threat to health from exposure to the Sun's UV rays for average individuals.
Note: In September, the maximum UV index of 5 suggests these recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
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Frequently asked questions

What is the temperature in September in Oakville?

In Oakville, in September, the average high-temperature is 79.7°F (26.5°C), and the average low-temperature is 59.9°F (15.5°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in August is evaluated at 96.8°F (36°C).

What is the average humidity in September in Oakville?

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

How many days does it rain in September in Oakville?

In September, the rain falls for 12.6 days. Throughout September, 2.13" (54mm) of precipitation is accumulated.

When it does not snow in Oakville?

April through October are months without snowfall in Oakville.

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

In Oakville, the average day length in September is 12h and 25min.

When are sunrise and sunset in September in Oakville?

On the first day of September, sunrise is at 6:31 am and sunset at 7:30 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 Oakville have in September?

In September, the average sunshine duration is 9.4h.

What is the UV index reading in September in Oakville?

The average daily maximum UV index in September in Oakville is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.
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
Oakville, MO

Average temperature in September - Oakville, MO
  • Average high temperature in September: 79.7°F

The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (37.9°F).

  • Average low temperature in September: 59.9°F

The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (25°F).

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Average pressure in September
Oakville, MO

Average pressure in September - Oakville, 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 (29.92"Hg).

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Average wind speed in September
Oakville, MO

Average wind speed in September - Oakville, MO
  • Average wind speed in September: 5.9mph

The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

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Average humidity in September
Oakville, MO

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

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in September
Oakville, MO

Average rainfall in September - Oakville, MO
  • Average rainfall in September: 2.13"

The wettest month (with the highest rainfall) is May (3.94").
The driest months (with the least rainfall) are February and November (1.77").

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Average rainfall days in September
Oakville, MO

Average rainfall days in September - Oakville, MO
  • Average rainfall days in September: 12.6 days

The month with the highest number of rainy days is July (16.9 days).
The months with the least rainy days are January and February (6.8 days).

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Average snowfall in September
Oakville, MO

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

The month with the highest snowfall is February (2.6").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Oakville, MO

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

The months with the highest number of snowfall days are January and February (4.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • 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 January (Average sunshine: 4h and 30min).

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Average sunshine days in September
Oakville, MO

Average sunshine days in September - Oakville, MO
  • Average sunshine days in September: 15.5 days

The month with the most sunshine days is January (20.9 days).
The month with the least sunshine days is June (11.6 days).

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Average UV index in September
Oakville, MO

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

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Average cloud cover in September
Oakville, MO

Average cloud cover in September - Oakville, MO
  • Average cloud cover in September: 30

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 28).

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Average visibility in September
Oakville, MO

Average visibility in September - Oakville, 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).

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Oakville, Missouri, USA

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