September weather forecast
Fenton, MO

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Weather in September

September, the first month of the autumn in Fenton, is still a warm month, with an average temperature ranging between min 60.1°F (15.6°C) and max 80.1°F (26.7°C).

Temperature

The transition to September results in a modest reduction in average high-temperature, moving from a tropical 86.5°F (30.3°C) in August to a warm 80.1°F (26.7°C). Fenton throughout September, records an average low-temperature of 60.1°F (15.6°C).

Humidity

In September, the average relative humidity is 72%.

Rainfall

In Fenton, during September, the rain falls for 11.9 days and regularly aggregates up to 2.17" (55mm) of precipitation. Throughout the year, there are 141.7 rainfall days, and 32.01" (813mm) of precipitation is accumulated.

Snowfall

January through March, September, November and December are months with snowfall in Fenton, Missouri. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 18.9 snowfall days, and 7.2" (183mm) of snow is accumulated.

Daylight

In September, the average length of the day is 12h and 25min.
On the first day of September, sunrise is at 6:31 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:45 pm CDT.

Sunshine

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

UV index

In Fenton, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the maximum UV index of 5 suggests this advice:
Heed the precautions - Suggestions to avoid sunburn are made. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Take note! UV radiation from the Sun can double in intensity due to snow reflection.

Frequently asked questions

What is the average September temperature?

The average high-temperature, in September, in Fenton, is 80.1°F (26.7°C), while the average low-temperature is 60.1°F (15.6°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, in August is calculated to be 98.6°F (37°C).

What is the average humidity in September?

In Fenton, the average relative humidity in September is 72%.

How much does it rain in September?

In Fenton, during September, the rain falls for 11.9 days and regularly aggregates up to 2.17" (55mm) of precipitation.

When does it start to snow?

September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow.

How many hours of daylight does Fenton have in September?

The average day length in September is 12h and 25min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:31 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:45 pm CDT.

How long on average sun shines in September in Fenton?

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

How high is the UV index in September?

In Fenton, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents 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
Fenton, MO

Average temperature in September - Fenton, MO
  • Average high temperature in September: 80.1°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (38.1°F).

  • Average low temperature in September: 60.1°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 (24.6°F).

Average pressure in September
Fenton, MO

Average pressure in September - Fenton, 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).

Average wind speed in September
Fenton, MO

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

The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in September
Fenton, MO

Average humidity in September - Fenton, MO
  • Average humidity in September: 72%

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

Average rainfall in September
Fenton, MO

Average rainfall in September - Fenton, MO
  • Average rainfall in September: 2.17"

The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is February (1.54").

Average rainfall days in September
Fenton, MO

Average rainfall days in September - Fenton, MO
  • Average rainfall days in September: 11.9 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (6.3 days).

Average snowfall in September
Fenton, MO

Average snowfall in September - Fenton, MO
  • Average snowfall in September: 0.04"

The month with the highest snowfall is January (2.52").
The months with the least snowfall are April, May, June, July, August and October (0").

Average snowfall days in September
Fenton, MO

Average snowfall days in September - Fenton, MO
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are April, May, June, July and August (0 days).

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

Average daylight in September / Average sunshine in September - Fenton, 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 months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

Average sunshine days in September
Fenton, MO

Average sunshine days in September - Fenton, MO
  • Average sunshine days in September: 16.3 days

The month with the most sunshine days is December (20.1 days).
The months with the least sunshine days are May and July (12.6 days).

Average UV index in September
Fenton, MO

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

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in September
Fenton, MO

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

The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June, July and August (Cloud cover 29).

Average visibility in September
Fenton, MO

Average visibility in September - Fenton, 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).

Fenton, Missouri, USA

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