September weather forecast
Bellflower, MO

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Weather in September

September, the first month of the autumn in Bellflower, is also a moderately hot month, with an average temperature varying between 79°F (26.1°C) and 58.8°F (14.9°C).

Temperature

The transition to September results in a modest reduction in average high-temperature, moving from a warm 85.3°F (29.6°C) in August to a still moderately hot 79°F (26.1°C). Bellflower, during the nights of September, experiences an average temperature drop to a refreshing 58.8°F (14.9°C).

Humidity

In Bellflower, the average relative humidity in September is 75%.

Rainfall

In Bellflower, in September, during 11.2 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. Throughout the year, there are 139.8 rainfall days, and 28.7" (729mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Bellflower, Missouri, the average length of the day in September is 12h and 26min.
On the first day of September in Bellflower, sunrise is at 6:34 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:49 pm CDT.

Sunshine

In September, the average sunshine in Bellflower is 9.1h.

UV index

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: An average UV index of 5 in September transforms into this advice:
Make use of precautions - Suggestions to resist sunburn are communicated. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Updated: Jun 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Bellflower in September?

In September, in Bellflower, the average high-temperature is 79°F (26.1°C), and the average low-temperature is 58.8°F (14.9°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, is computed to be 95°F (35°C).

What is the average humidity in September?

In Bellflower, the average relative humidity in September is 75%.

How much does it rain in September?

In Bellflower, in September, it is raining for 11.2 days, with typically 2.05" (52mm) of accumulated precipitation.

When it does not snow?

May through October are months without snowfall.

What is the average length of the day in September?

In September, the average day length is 12h and 26min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:34 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:49 pm CDT.

How long on average sun shines in September?

In September, the average sunshine duration is 9.1h.

How high is the UV index in September?

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health 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
Bellflower, MO

Average temperature in September - Bellflower, MO
  • Average high temperature in September: 79°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (36.1°F).

  • Average low temperature in September: 58.8°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

Average pressure in September
Bellflower, MO

Average pressure in September - Bellflower, 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 (29.91"Hg).

Average wind speed in September
Bellflower, MO

Average wind speed in September - Bellflower, MO
  • Average wind speed in September: 6.6mph

The windiest months (with the highest average wind speed) are January and February (9.3mph).
The calmest month (with the lowest average wind speed) is July (6mph).

Average humidity in September
Bellflower, MO

Average humidity in September - Bellflower, MO
  • Average humidity in September: 75%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September
Bellflower, MO

Average rainfall in September - Bellflower, MO
  • Average rainfall in September: 2.05"

The wettest month (with the highest rainfall) is May (3.39").
The driest months (with the least rainfall) are January and February (1.46").

Average rainfall days in September
Bellflower, MO

Average rainfall days in September - Bellflower, MO
  • Average rainfall days in September: 11.2 days

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is December (6.5 days).

Average snowfall in September
Bellflower, MO

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

The month with the highest snowfall is January (3.11").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Bellflower, MO

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

The month with the highest number of snowfall days is February (5.9 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
Bellflower, MO

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

Average sunshine days in September
Bellflower, MO

Average sunshine days in September - Bellflower, MO
  • Average sunshine days in September: 17.4 days

The month with the most sunshine days is December (20 days).
The month with the least sunshine days is May (12.2 days).

Average UV index in September
Bellflower, MO

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

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

Average cloud cover in September
Bellflower, MO

Average cloud cover in September - Bellflower, MO
  • Average cloud cover in September: 32

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in September
Bellflower, MO

Average visibility in September - Bellflower, 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).

Bellflower, Missouri, USA

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