September weather forecast
Wyoming, IL

Share

Weather in September

The first month of the autumn, September, is still a warm month in Wyoming, Illinois, with an average temperature varying between 75.7°F (24.3°C) and 56.7°F (13.7°C).

Temperature

September's arrival brings an average high-temperature of a still moderately hot 75.7°F (24.3°C), slightly deviating from August's 80.2°F (26.8°C). During September, the average low-temperature in Wyoming is a refreshing 56.7°F (13.7°C).

Humidity

The average relative humidity in September is 77%.

Rainfall

In Wyoming, Illinois, in September, it is raining for 9.3 days, with typically 1.1" (28mm) of accumulated precipitation. In Wyoming, during the entire year, the rain falls for 116.8 days and collects up to 13.98" (355mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

The average length of the day in September is 12h and 27min.
On the first day of the month, sunrise is at 6:26 am and sunset at 7:31 pm. On the last day of September, in Wyoming, sunrise is at 6:55 am and sunset at 6:42 pm CDT.

Sunshine

In September, the average sunshine in Wyoming, Illinois, is 9.1h.

UV index

In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 4 in September translates into these instructions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat.
[Resources]

Frequently asked questions

What are the temperatures in Wyoming in September?

The average high-temperature and low-temperature during September are 75.7°F (24.3°C) and 56.7°F (13.7°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in July is evaluated at 87.8°F (31°C).

What is the average humidity in September in Wyoming?

The average relative humidity in September in Wyoming is 77%.

How many days does it rain in September in Wyoming?

In Wyoming, Illinois, in September, during 9.3 rainfall days, 1.1" (28mm) of precipitation is typically accumulated.

When it does not snow in Wyoming?

May through September are months without snowfall in Wyoming.

Does it snow in Wyoming in September?

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

How many hours of daylight does Wyoming have in September?

In September, the average day length in Wyoming is 12h and 27min.

What time are sunrise and sunset in September in Wyoming?

In September, on the first day of the month, sunrise is at 6:26 am and sunset at 7:31 pm. On the last day of the month, in Wyoming, Illinois, sunrise is at 6:55 am and sunset at 6:42 pm CDT.

How long on average sun shines in September in Wyoming?

In September, the average sunshine duration in Wyoming, Illinois, is 9.1h.

How high is the UV index in September in Wyoming?

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability 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
Wyoming, IL

Average temperature in September - Wyoming, IL
  • Average high temperature in September: 75.7°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (29.7°F).

  • Average low temperature in September: 56.7°F

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).

[Resources]

Average pressure in September
Wyoming, IL

Average pressure in September - Wyoming, IL
  • Average pressure in September: 30.03"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

[Resources]

Average wind speed in September
Wyoming, IL

Average wind speed in September - Wyoming, IL
  • Average wind speed in September: 7.8mph

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

[Resources]

Average humidity in September
Wyoming, IL

Average humidity in September - Wyoming, IL
  • Average humidity in September: 77%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).

[Resources]

Average rainfall in September
Wyoming, IL

Average rainfall in September - Wyoming, IL
  • Average rainfall in September: 1.1"

The wettest month (with the highest rainfall) is May (2.24").
The driest month (with the least rainfall) is January (0.59").

[Resources]

Average rainfall days in September
Wyoming, IL

Average rainfall days in September - Wyoming, IL
  • Average rainfall days in September: 9.3 days

The month with the highest number of rainy days is May (15.2 days).
The months with the least rainy days are January and February (4.2 days).

[Resources]

Average snowfall in September
Wyoming, IL

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

The month with the highest snowfall is January (1.81").
The months with the least snowfall are May, June, July, August and September (0").

[Resources]

Average snowfall days in September
Wyoming, IL

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

The month with the highest number of snowfall days is January (8.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

[Resources]

Average daylight in September /
Average sunshine in September
Wyoming, IL

Average daylight in September / Average sunshine in September - Wyoming, IL
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in September: 9h and 1min

The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

[Resources]

Average sunshine days in September
Wyoming, IL

Average sunshine days in September - Wyoming, IL
  • Average sunshine days in September: 18.3 days

The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is May (12.8 days).

[Resources]

Average UV index in September
Wyoming, IL

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

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

[Resources]

Average cloud cover in September
Wyoming, IL

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

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 30).

[Resources]

Average visibility in September
Wyoming, IL

Average visibility in September - Wyoming, IL
  • Average visibility in September: 6mi

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

[Resources]

Wyoming, Illinois, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location