September weather forecast
Germantown, MO

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Weather in September

September, the first month of the autumn in Germantown, is also a moderately hot month, with an average temperature varying between 59.9°F (15.5°C) and 79.2°F (26.2°C).

Temperature

September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from 85.6°F (29.8°C) in August to a still warm 79.2°F (26.2°C). In Germantown, the average temperature during the nights of September drops to a moderate 59.9°F (15.5°C).

Humidity

In September, the average relative humidity in Germantown is 76%.

Rainfall

In September, in Germantown, the rain falls for 11.6 days. Throughout September, 2.6" (66mm) of precipitation is accumulated. In Germantown, during the entire year, the rain falls for 141.5 days and collects up to 30.67" (779mm) of precipitation.

Snowfall

April, June through September are months without snowfall in Germantown.

Daylight

In September, the average length of the day in Germantown is 12h and 25min.
On the first day of September in Germantown, sunrise is at 6:46 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 7:00 pm CDT.

Sunshine

In September, the average sunshine is 9.4h.

UV index

In Germantown, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.
Note: The daily maximum UV index of 5 in September interprets into the following advice:
Make use of precautions - Suggestions to resist sunburn are communicated. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Germantown in September?

The average high-temperature and low-temperature in Germantown during September are 79.2°F (26.2°C) and 59.9°F (15.5°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in August is estimated at 96.8°F (36°C).

What is the average humidity in September in Germantown?

In Germantown, the average relative humidity in September is 76%.

How many days does it rain in September in Germantown?

In Germantown, in September, it is raining for 11.6 days, with typically 2.6" (66mm) of accumulated precipitation.

When it does not snow in Germantown?

In Germantown, snow does not fall in April, June through September.

Does it snow in Germantown in September?

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

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

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

When is the sunrise / sunset in September in Germantown?

On the first day of September, sunrise is at 6:46 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 7:00 pm CDT.

How many hours of sunshine does Germantown have in September?

The average sunshine duration in September in Germantown, Missouri, is 9.4h.

What is the UV index intensity in September in Germantown?

In Germantown, Missouri, the average daily maximum UV index in September 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
Germantown, MO

Average temperature in September - Germantown, MO
  • Average high temperature in September: 79.2°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 (39°F).

  • Average low temperature in September: 59.9°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

Average pressure in September
Germantown, MO

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

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in September
Germantown, MO

Average wind speed in September - Germantown, MO
  • Average wind speed in September: 7mph

The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).

Average humidity in September
Germantown, MO

Average humidity in September - Germantown, MO
  • Average humidity in September: 76%

The month with the highest relative humidity is May (81%).
The months with the lowest relative humidity are October and November (72%).

Average rainfall in September
Germantown, MO

Average rainfall in September - Germantown, MO
  • Average rainfall in September: 2.6"

The wettest month (with the highest rainfall) is May (4.72").
The driest month (with the least rainfall) is January (1.14").

Average rainfall days in September
Germantown, MO

Average rainfall days in September - Germantown, MO
  • Average rainfall days in September: 11.6 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (5.7 days).

Average snowfall in September
Germantown, MO

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

The month with the highest snowfall is February (2.76").
The months with the least snowfall are April, June, July, August and September (0").

Average snowfall days in September
Germantown, MO

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

The month with the highest number of snowfall days is February (5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Germantown, 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 36min).

  • Average sunshine in September: 9h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).

Average sunshine days in September
Germantown, MO

Average sunshine days in September - Germantown, MO
  • Average sunshine days in September: 15.9 days

The months with the most sunshine days are January and December (21.1 days).
The month with the least sunshine days is June (12.1 days).

Average UV index in September
Germantown, MO

Average UV index in September - Germantown, 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, November and December (UV index 2).

Average cloud cover in September
Germantown, MO

Average cloud cover in September - Germantown, MO
  • Average cloud cover in September: 29

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

Average visibility in September
Germantown, MO

Average visibility in September - Germantown, 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).

Germantown, Missouri, USA

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