September weather forecast
Augusta, MO

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Weather in September

September, the first month of the autumn in Augusta, is also a moderately hot month, with temperature in the range of an average low of 59.5°F (15.3°C) and an average high of 80.1°F (26.7°C).

Temperature

Augusta's weather in September involves a mild decrease in the average high-temperature, moving down slightly from August's hot 86.9°F (30.5°C) to a warm 80.1°F (26.7°C). During September, the nighttime temperature averages to a refreshing 59.5°F (15.3°C).

Humidity

In Augusta, the average relative humidity in September is 74%.

Rainfall

In Augusta, during September, the rain falls for 13 days and regularly aggregates up to 2.2" (56mm) of precipitation. In Augusta, during the entire year, the rain falls for 150.5 days and collects up to 33.74" (857mm) of precipitation.

Snowfall

In Augusta, 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, sunrise is at 6:33 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:47 pm CDT.

Sunshine

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

UV index

In Augusta, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 5 in September converts into the following recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Updated: Jul 31, 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 80.1°F (26.7°C) and a low-temperature of 59.5°F (15.3°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, in August is estimated at 98.6°F (37°C).

What is the average humidity in September?

In September, the average relative humidity is 74%.

How many days does it rain in September in Augusta?

In September, the rain falls for 13 days. Throughout September, 2.2" (56mm) of precipitation is accumulated.

When it does not snow in Augusta?

April through October are months without snowfall.

What is the average length of the day in September?

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

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:33 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:47 pm CDT.

How long on average sun shines in September?

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

What is the UV index intensity in September?

In Augusta, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to 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
Augusta, MO

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

The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (38.7°F).

  • Average low temperature in September: 59.5°F

The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

Average pressure in September
Augusta, MO

Average pressure in September - Augusta, 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
Augusta, MO

Average wind speed in September - Augusta, MO
  • Average wind speed in September: 5.6mph

The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).

Average humidity in September
Augusta, MO

Average humidity in September - Augusta, MO
  • Average humidity in September: 74%

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

Average rainfall in September
Augusta, MO

Average rainfall in September - Augusta, MO
  • Average rainfall in September: 2.2"

The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is February (1.89").

Average rainfall days in September
Augusta, MO

Average rainfall days in September - Augusta, MO
  • Average rainfall days in September: 13 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (7.9 days).

Average snowfall in September
Augusta, MO

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

The month with the highest snowfall is February (2.87").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Augusta, MO

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

The month with the highest number of snowfall days is January (6.6 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
Augusta, MO

Average daylight in September / Average sunshine in September - Augusta, 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 18min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

Average sunshine days in September
Augusta, MO

Average sunshine days in September - Augusta, MO
  • Average sunshine days in September: 15.3 days

The month with the most sunshine days is October (18.9 days).
The month with the least sunshine days is July (11.8 days).

Average UV index in September
Augusta, MO

Average UV index in September - Augusta, 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).

Average cloud cover in September
Augusta, MO

Average cloud cover in September - Augusta, MO
  • Average cloud cover in September: 31

The months with the most cloud cover are January and February (Cloud cover 49).
The months with the least cloud cover are June and July (Cloud cover 29).

Average visibility in September
Augusta, MO

Average visibility in September - Augusta, 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).

Augusta, Missouri, USA

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