September weather forecast
Redmon, IL

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Redmon, Illinois, with temperature in the range of an average low of 58.6°F (14.8°C) and an average high of 77.2°F (25.1°C).

Temperature

Shifting into September, Redmon records an average high-temperature of a still warm 77.2°F (25.1°C), presenting minor fluctuations compared to the previous month. Redmon observes an average nighttime low-temperature of 58.6°F (14.8°C) during the month of September.

Humidity

In September, the average relative humidity is 76%.

Rainfall

In September, in Redmon, the rain falls for 11 days. Throughout September, 1.1" (28mm) of precipitation is accumulated. Throughout the year, in Redmon, there are 133.4 rainfall days, and 19.49" (495mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Redmon, Illinois, the average length of the day in September is 12h and 26min.
On the first day of September in Redmon, sunrise is at 6:20 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:34 pm CDT.

Sunshine

The average sunshine in September in Redmon is 9h.

UV index

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 5 in September translates into this advice:
Take precautions - Protection against skin and eye damage is obliged. The Sun's radiation is especially intense around midday; try to stay in shade during this period. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures in Redmon?

During September, Redmon experiences an average high-temperature of 77.2°F (25.1°C) and a low-temperature of 58.6°F (14.8°C). In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is calculated to be 87.8°F (31°C).

What is the average humidity in September in Redmon?

The average relative humidity in September in Redmon, Illinois, is 76%.

How much does it rain in Redmon in September?

In Redmon, during September, the rain falls for 11 days and regularly aggregates up to 1.1" (28mm) of precipitation.

When it does not snow in Redmon?

In Redmon, Illinois, snow does not fall in May through October.

How many hours of daylight does Redmon have in September?

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

What time are sunrise and sunset in September in Redmon?

In September, on the first day of the month, sunrise is at 6:20 am and sunset at 7:22 pm. On the last day of the month, in Redmon, sunrise is at 6:47 am and sunset at 6:34 pm CDT.

How many hours of sunshine does Redmon have in September?

The average sunshine duration in September in Redmon, Illinois, is 9h.

What is the UV index reading in September in Redmon?

In Redmon, Illinois, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from 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
Redmon, IL

Average temperature in September - Redmon, IL
  • Average high temperature in September: 77.2°F

The warmest month (with the highest average high temperature) is July (82.4°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 (65.8°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).

Average pressure in September
Redmon, IL

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

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in September
Redmon, IL

Average wind speed in September - Redmon, IL
  • Average wind speed in September: 6.9mph

The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.1mph).

Average humidity in September
Redmon, IL

Average humidity in September - Redmon, IL
  • Average humidity in September: 76%

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

Average rainfall in September
Redmon, IL

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

The wettest month (with the highest rainfall) is April (2.76").
The driest month (with the least rainfall) is February (0.94").

Average rainfall days in September
Redmon, IL

Average rainfall days in September - Redmon, IL
  • Average rainfall days in September: 11 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (6.3 days).

Average snowfall in September
Redmon, IL

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

The month with the highest snowfall is December (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Redmon, IL

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

The month with the highest number of snowfall days is January (6.9 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
Redmon, IL

Average daylight in September / Average sunshine in September - Redmon, 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 0min

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in September
Redmon, IL

Average sunshine days in September - Redmon, IL
  • Average sunshine days in September: 17.2 days

The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (11.3 days).

Average UV index in September
Redmon, IL

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

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

Average cloud cover in September
Redmon, IL

Average cloud cover in September - Redmon, IL
  • Average cloud cover in September: 31

The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are June, August and September (Cloud cover 31).

Average visibility in September
Redmon, IL

Average visibility in September - Redmon, 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).

Redmon, Illinois, USA

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