September weather forecast
Dwight, IL

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Dwight, Illinois, with temperature in the range of an average low of 57°F (13.9°C) and an average high of 74.8°F (23.8°C).

Temperature

Dwight starts September with an average high-temperature of a still moderately hot 74.8°F (23.8°C), a minor shift from August's 79.7°F (26.5°C). Dwight experiences an average low-temperature of 57°F (13.9°C) in the month of September.

Humidity

In September, the average relative humidity in Dwight is 77%.

Rainfall

In Dwight, in September, during 9.9 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. Throughout the year, in Dwight, Illinois, there are 117.5 rainfall days, and 13.74" (349mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

In September, the average length of the day is 12h and 28min.
On the first day of the month, sunrise is at 6:21 am and sunset at 7:25 pm. On the last day of September, in Dwight, sunrise is at 6:50 am and sunset at 6:36 pm CDT.

Sunshine

The average sunshine in September is 8.8h.

UV index

The average daily maximum UV index in September in Dwight is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 4 during September leads to these advisories:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
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Frequently asked questions

What are the temperatures in Dwight in September?

September temperatures in Dwight vary between a high-temperature of 74.8°F (23.8°C) and a low-temperature of 57°F (13.9°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in July is appraised at 87.8°F (31°C).

What is the average humidity in September in Dwight?

In Dwight, Illinois, the average relative humidity in September is 77%.

How many days does it rain in September in Dwight?

In Dwight, Illinois, in September, during 9.9 rainfall days, 1.02" (26mm) of precipitation is typically accumulated.

When it does not snow in Dwight?

May through September are months without snowfall.

Does it snow in Dwight in September?

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

How many hours of daylight does Dwight have in September?

The average day length in September is 12h and 28min.

What time are sunrise and sunset in September in Dwight?

In September, on the first day of the month, sunrise is at 6:21 am and sunset at 7:25 pm. On the last day of the month, in Dwight, sunrise is at 6:50 am and sunset at 6:36 pm CDT.

How long on average sun shines in September in Dwight?

The average sunshine duration in September in Dwight, Illinois, is 8.8h.

What is the UV index reading in September in Dwight?

In September, the average daily maximum UV index in Dwight, Illinois, is 4. A UV Index of 3 to 5 symbolizes a medium health risk 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
Dwight, IL

Average temperature in September - Dwight, IL
  • Average high temperature in September: 74.8°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 (29.8°F).

  • Average low temperature in September: 57°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).

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Average pressure in September
Dwight, IL

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

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in September
Dwight, IL

Average wind speed in September - Dwight, IL
  • Average wind speed in September: 7.3mph

The windiest months (with the highest average wind speed) are January and April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in September
Dwight, IL

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

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in September
Dwight, IL

Average rainfall in September - Dwight, IL
  • Average rainfall in September: 1.02"

The wettest month (with the highest rainfall) is May (2.09").
The driest months (with the least rainfall) are February and November (0.63").

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Average rainfall days in September
Dwight, IL

Average rainfall days in September - Dwight, IL
  • Average rainfall days in September: 9.9 days

The months with the highest number of rainy days are May and July (14.8 days).
The month with the least rainy days is February (3.7 days).

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Average snowfall in September
Dwight, IL

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

The month with the highest snowfall is February (1.26").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Dwight, IL

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

The month with the highest number of snowfall days is January (9.9 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
Dwight, IL

Average daylight in September / Average sunshine in September - Dwight, 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: 8h and 5min

The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

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Average sunshine days in September
Dwight, IL

Average sunshine days in September - Dwight, IL
  • Average sunshine days in September: 17.3 days

The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is July (11.8 days).

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Average UV index in September
Dwight, IL

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

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

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Average cloud cover in September
Dwight, IL

Average cloud cover in September - Dwight, IL
  • Average cloud cover in September: 34

The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 34).

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Average visibility in September
Dwight, IL

Average visibility in September - Dwight, 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).

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Dwight, Illinois, USA

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