September weather forecast
Nebo, IL

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Weather in September

The first month of the autumn, September, is still a warm month in Nebo, Illinois, with an average temperature varying between 78.3°F (25.7°C) and 58.6°F (14.8°C).

Temperature

Nebo records an average high-temperature of a still moderately hot 78.3°F (25.7°C) as September arrives, nearly mirroring the previous month's climate. In Nebo, September's nights observe an average temperature dip to a moderate 58.6°F (14.8°C).

Humidity

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

Rainfall

In Nebo, in September, during 10.5 rainfall days, 1.65" (42mm) of precipitation is typically accumulated. In Nebo, during the entire year, the rain falls for 128.8 days and collects up to 18.35" (466mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In Nebo, the average length of the day in September is 12h and 26min.
On the first day of September, sunrise is at 6:32 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:46 pm CDT.

Sunshine

In September, the average sunshine is 9.5h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 5 during September translates into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. It's recommended to limit sun exposure when its radiation is at its peak during midday. Opt for tightly woven and loose clothing to enhance protection from the Sun.

Frequently asked questions

What are September temperatures?

The average high-temperature, in September, in Nebo, is 78.3°F (25.7°C), while the average low-temperature is 58.6°F (14.8°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 91.4°F (33°C).

What is the average humidity in September?

The average relative humidity in September is 74%.

How much does it rain in September?

In Nebo, in September, it is raining for 10.5 days, with typically 1.65" (42mm) of accumulated precipitation.

When it does not snow?

In Nebo, snow does not fall in May through October.

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

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

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:32 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:46 pm CDT.

How long on average sun shines in September?

The average sunshine duration in September is 9.5h.

How high is the UV index in September?

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health 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
Nebo, IL

Average temperature in September - Nebo, IL
  • Average high temperature in September: 78.3°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (33.8°F).

  • Average low temperature in September: 58.6°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average pressure in September
Nebo, IL

Average pressure in September - Nebo, 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 (29.91"Hg).

Average wind speed in September
Nebo, IL

Average wind speed in September - Nebo, IL
  • Average wind speed in September: 6.8mph

The windiest months (with the highest average wind speed) are January, February and April (9.8mph).
The calmest month (with the lowest average wind speed) is July (6mph).

Average humidity in September
Nebo, IL

Average humidity in September - Nebo, IL
  • Average humidity in September: 74%

The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is October (71%).

Average rainfall in September
Nebo, IL

Average rainfall in September - Nebo, IL
  • Average rainfall in September: 1.65"

The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is February (0.75").

Average rainfall days in September
Nebo, IL

Average rainfall days in September - Nebo, IL
  • Average rainfall days in September: 10.5 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.5 days).

Average snowfall in September
Nebo, IL

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

The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Nebo, IL

Average snowfall days in September - Nebo, 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).

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

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in September: 9h and 3min

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 24min).

Average sunshine days in September
Nebo, IL

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

The month with the most sunshine days is December (20.7 days).
The month with the least sunshine days is June (12.3 days).

Average UV index in September
Nebo, IL

Average UV index in September - Nebo, IL
  • Average UV index in September: 5

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in September
Nebo, IL

Average cloud cover in September - Nebo, IL
  • Average cloud cover in September: 29

The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are June, July, August and September (Cloud cover 29).

Average visibility in September
Nebo, IL

Average visibility in September - Nebo, 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).

Nebo, Illinois, USA

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