September weather forecast and climate
Scales Mound, IL

Weather in September

The first month of the autumn, September, is also an agreeable month in Scales Mound, Illinois, with temperature in the range of an average low of 53.1°F (11.7°C) and an average high of 73°F (22.8°C).

Temperature

In September, the average high-temperature slightly decreases, from a warm 78.6°F (25.9°C) in August, to a pleasant 73°F (22.8°C). In Scales Mound, the average low-temperature is 53.1°F (11.7°C).

Humidity

In September, the average relative humidity is 79%.

Rainfall

In September, in Scales Mound, Illinois, the rain falls for 12.6 days. Throughout September, 2.68" (68mm) of precipitation is accumulated. In Scales Mound, during the entire year, the rain falls for 153.1 days and collects up to 30.75" (781mm) of precipitation.

Snowfall

In Scales Mound, Illinois, snow does not fall in May through September.

Daylight

In September, the average length of the day is 12.5h.

Sunshine

In Scales Mound, the average sunshine is 9h.

UV index

In September, the average daily maximum UV index in Scales Mound is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
[Resources]

FAQ

What is the average humidity in September in Scales Mound?

In Scales Mound, Illinois, the average relative humidity in September is 79%.

How many days does it rain in September in Scales Mound?

In Scales Mound, in September, during 12.6 rainfall days, 2.68" (68mm) of precipitation is typically accumulated.

When it does not snow in Scales Mound?

May through September are months without snowfall.

Does it snow in Scales Mound in September?

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

What is the average length of the day in September in Scales Mound?

In September, the average length of the day in Scales Mound is 12.5h.

How long on average sun shines in September in Scales Mound?

In September, the average sunshine in Scales Mound, Illinois, is 9h.

What is the UV index reading in September in Scales Mound?

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV radiation.

Average temperature in September
Scales Mound, IL

Average temperature in September - Scales Mound, IL
  • Average high temperature in September: 73°F

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (25°F).

  • Average low temperature in September: 53.1°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).

[Resources]

Average pressure in September
Scales Mound, IL

Average pressure in September - Scales Mound, IL
  • Average pressure in September: 30.02"

The month with the highest atmospheric pressure is January (30.12").
The month with the lowest atmospheric pressure is June (29.9").

[Resources]

Average wind speed in September
Scales Mound, IL

Average wind speed in September - Scales Mound, IL
  • Average wind speed in September: 7.6mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

[Resources]

Average humidity in September
Scales Mound, IL

Average humidity in September - Scales Mound, IL
  • Average humidity in September: 79%

The month with the highest relative humidity is January (87%).
Months with the lowest relative humidity are April and October (76%).

[Resources]

Average rainfall in September
Scales Mound, IL

Average rainfall in September - Scales Mound, IL
  • Average rainfall in September: 2.68"

The wettest month (with the highest rainfall) is June (4.29").
The driest month (with the least rainfall) is January (1.26").

[Resources]

Average rainfall days in September
Scales Mound, IL

Average rainfall days in September - Scales Mound, IL
  • Average rainfall days in September: 12.6 days

The month with the highest number of rainy days is May (20 days).
The month with the least rainy days is February (4.8 days).

[Resources]

Average snowfall in September
Scales Mound, IL

Average snowfall in September - Scales Mound, IL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (5.12").
Months with the least snowfall are May, June, July, August and September (0").

[Resources]

Average snowfall days in September
Scales Mound, IL

Average snowfall days in September - Scales Mound, IL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (13.2 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

[Resources]

Average daylight in September /
Average sunshine in September
Scales Mound, IL

Average daylight in September / Average sunshine in September - Scales Mound, IL
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in September: 9h

The month with the most sunshine is August (Average sunshine: 9.8h).
The month with the least sunshine is January (Average sunshine: 3.7h).

[Resources]

Average sunshine days in September
Scales Mound, IL

Average sunshine days in September - Scales Mound, IL
  • Average sunshine days in September: 14.6 days

The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is June (7.9 days).

[Resources]

Average UV index in September
Scales Mound, IL

Average UV index in September - Scales Mound, IL
  • Average UV index in September: 4

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January and December (UV index 1).

[Resources]

Average cloud cover in September
Scales Mound, IL

Average cloud cover in September - Scales Mound, IL
  • Average cloud cover in September: 32

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is September (Cloud cover 32).

[Resources]

Average visibility in September
Scales Mound, IL

Average visibility in September - Scales Mound, IL
  • Average visibility in September: 6mi

Months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February and July (5mi).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location