September weather forecast
Old Ripley, IL

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Weather in September

The first month of the autumn, September, is still a warm month in Old Ripley, Illinois, with an average temperature fluctuating between 77.9°F (25.5°C) and 59.5°F (15.3°C).

Temperature

September's advent presents an average high-temperature of a still warm 77.9°F (25.5°C), indicating a slight variation from the conditions of the previous month. In Old Ripley, an average nighttime temperature of 59.5°F (15.3°C) is expected during September.

Humidity

The average relative humidity in September is 75%.

Rainfall

In Old Ripley, in September, during 11.5 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. Throughout the year, there are 137.9 rainfall days, and 24.88" (632mm) of precipitation is accumulated.

Snowfall

In Old Ripley, Illinois, snow does not fall in April through October.

Daylight

The average length of the day in September is 12h and 26min.
On the first day of September, sunrise is at 6:27 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:42 pm CDT.

Sunshine

In September, the average sunshine is 9.3h.

UV index

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: A typical high UV index of 5 in September suggests the following recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
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Frequently asked questions

What are the temperatures in Old Ripley in September?

In September, the average high-temperature and low-temperature are 77.9°F (25.5°C) and 59.5°F (15.3°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in August is evaluated at 91.4°F (33°C).

What is the average humidity in September in Old Ripley?

In Old Ripley, Illinois, the average relative humidity in September is 75%.

How much does it rain in Old Ripley in September?

In Old Ripley, Illinois, during September, the rain falls for 11.5 days and regularly aggregates up to 1.5" (38mm) of precipitation.

When it does not snow in Old Ripley?

In Old Ripley, Illinois, snow does not fall in April through October.

What is the average length of the day in September in Old Ripley?

The average day length in September is 12h and 26min.

When are sunrise and sunset in September in Old Ripley?

On the first day of September in Old Ripley, Illinois, sunrise is at 6:27 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:42 pm CDT.

How many hours of sunshine does Old Ripley have in September?

The average sunshine duration in September is 9.3h.

How high is the UV index in September in Old Ripley?

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
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
Old Ripley, IL

Average temperature in September - Old Ripley, IL
  • Average high temperature in September: 77.9°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 (36.1°F).

  • Average low temperature in September: 59.5°F

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

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Average pressure in September
Old Ripley, IL

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in September
Old Ripley, IL

Average wind speed in September - Old Ripley, IL
  • Average wind speed in September: 6.4mph

The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).

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Average humidity in September
Old Ripley, IL

Average humidity in September - Old Ripley, IL
  • Average humidity in September: 75%

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

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Average rainfall in September
Old Ripley, IL

Average rainfall in September - Old Ripley, IL
  • Average rainfall in September: 1.5"

The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is February (1.26").

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Average rainfall days in September
Old Ripley, IL

Average rainfall days in September - Old Ripley, IL
  • Average rainfall days in September: 11.5 days

The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (6.3 days).

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Average snowfall in September
Old Ripley, IL

Average snowfall in September - Old Ripley, IL
  • Average snowfall in September: 0"

The month with the highest snowfall is December (1.89").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Old Ripley, IL

Average snowfall days in September - Old Ripley, IL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (5.8 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
Old Ripley, IL

Average daylight in September / Average sunshine in September - Old Ripley, 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 30min).

  • Average sunshine in September: 9h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 30min).

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Average sunshine days in September
Old Ripley, IL

Average sunshine days in September - Old Ripley, IL
  • Average sunshine days in September: 16.1 days

The month with the most sunshine days is December (20 days).
The month with the least sunshine days is May (11.8 days).

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Average UV index in September
Old Ripley, IL

Average UV index in September - Old Ripley, 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).

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Average cloud cover in September
Old Ripley, IL

Average cloud cover in September - Old Ripley, 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).

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Average visibility in September
Old Ripley, IL

Average visibility in September - Old Ripley, 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).

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Old Ripley, Illinois, USA

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