September weather forecast
Augusta, IL

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Weather in September

The first month of the autumn, September, is still a warm month in Augusta, Illinois, with an average temperature ranging between max 76.8°F (24.9°C) and min 57.6°F (14.2°C).

Temperature

In Augusta, September's average high-temperature stands at a still warm 76.8°F (24.9°C), closely related to the preceding month. Augusta reports a consistent average low-temperature of 57.6°F (14.2°C) throughout September nights.

Humidity

The average relative humidity in September is 75%.

Rainfall

In Augusta, Illinois, in September, during 7.7 rainfall days, 0.87" (22mm) of precipitation is typically accumulated. In Augusta, during the entire year, the rain falls for 94.4 days and collects up to 7.76" (197mm) of precipitation.

Snowfall

In Augusta, snow does not fall in May through September.

Daylight

In September, the average length of the day is 12h and 26min.
On the first day of September in Augusta, sunrise is at 6:32 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:47 pm CDT.

Sunshine

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

UV index

In September, the average daily maximum UV index in Augusta is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: In September, a daily UV index of 4 turns into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
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Frequently asked questions

What is the average September temperature in Augusta?

Augusta in September has an average high-temperature of 76.8°F (24.9°C) and an average low-temperature of 57.6°F (14.2°C). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is computed to be 87.8°F (31°C).

What is the average humidity in September in Augusta?

In September, the average relative humidity is 75%.

How much does it rain in Augusta in September?

In Augusta, during September, the rain falls for 7.7 days and regularly aggregates up to 0.87" (22mm) of precipitation.

When it does not snow in Augusta?

May through September are months without snowfall in Augusta, Illinois.

Does it snow in Augusta in September?

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

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

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

What time are sunrise and sunset in September in Augusta?

In September, on the first day of the month, sunrise is at 6:32 am and sunset at 7:35 pm. On the last day of the month, in Augusta, sunrise is at 6:59 am and sunset at 6:47 pm CDT.

How long on average sun shines in September in Augusta?

In September, the average sunshine duration is 9.4h.

What is the UV index intensity in September in Augusta?

In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health risk 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, IL

Average temperature in September - Augusta, IL
  • Average high temperature in September: 76.8°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (31.1°F).

  • Average low temperature in September: 57.6°F

The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (19°F).

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Average pressure in September
Augusta, IL

Average pressure in September - Augusta, IL
  • Average pressure in September: 30.02"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in September
Augusta, IL

Average wind speed in September - Augusta, IL
  • Average wind speed in September: 7.5mph

The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

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Average humidity in September
Augusta, IL

Average humidity in September - Augusta, IL
  • Average humidity in September: 75%

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in September
Augusta, IL

Average rainfall in September - Augusta, IL
  • Average rainfall in September: 0.87"

The wettest month (with the highest rainfall) is May (1.1").
The driest month (with the least rainfall) is December (0.35").

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Average rainfall days in September
Augusta, IL

Average rainfall days in September - Augusta, IL
  • Average rainfall days in September: 7.7 days

The month with the highest number of rainy days is May (12.3 days).
The month with the least rainy days is January (3.3 days).

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Average snowfall in September
Augusta, IL

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

The month with the highest snowfall is January (0.67").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Augusta, IL

Average snowfall days in September - Augusta, IL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (6.3 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
Augusta, IL

Average daylight in September / Average sunshine in September - Augusta, IL
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in September: 9h and 2min

The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in September
Augusta, IL

Average sunshine days in September - Augusta, IL
  • Average sunshine days in September: 20.4 days

The month with the most sunshine days is December (23.5 days).
The month with the least sunshine days is June (13.9 days).

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Average UV index in September
Augusta, IL

Average UV index in September - Augusta, IL
  • Average UV index in September: 4

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in September
Augusta, IL

Average cloud cover in September - Augusta, IL
  • Average cloud cover in September: 30

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in September
Augusta, IL

Average visibility in September - Augusta, IL
  • 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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Augusta, Illinois, USA

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