September weather forecast
Park Ridge, IL

Weather in September

The first month of the autumn, September, is still a pleasant month in Park Ridge, Illinois, with temperature in the range of an average low of 59.9°F (15.5°C) and an average high of 72.3°F (22.4°C).

Temperature

In Park Ridge, the average high-temperature in September marginally drops from a warm 79.2°F (26.2°C) in August to a pleasant 72.3°F (22.4°C). The average low-temperature, in September, is 59.9°F (15.5°C).

Humidity

The average relative humidity in September in Park Ridge is 74%.

Rainfall

In Park Ridge, in September, it is raining for 9.4 days, with typically 0.67" (17mm) of accumulated precipitation. Throughout the year, in Park Ridge, there are 98.2 rainfall days, and 7.36" (187mm) of precipitation is accumulated.

Snowfall

In Park Ridge, snow does not fall in June through September.

Daylight

In Park Ridge, the average length of the day in September is 12h and 28min.
On the first day of the month, sunrise is at 6:17 am and sunset at 7:25 pm. On the last day of September, sunrise is at 6:47 am and sunset at 6:35 pm CDT.

Sunshine

In September, the average sunshine is 8.9h.

UV index

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the average humidity in September in Park Ridge?

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

How much does it rain in Park Ridge in September?

In Park Ridge, Illinois, during September, the rain falls for 9.4 days and regularly aggregates up to 0.67" (17mm) of precipitation.

When it does not snow in Park Ridge?

June through September are months without snowfall.

Does it snow in Park Ridge in September?

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

What is the average length of the day in September in Park Ridge?

The average day length in September in Park Ridge, Illinois, is 12h and 28min.

When are sunrise and sunset in September in Park Ridge?

In September, on the first day of the month, sunrise is at 6:17 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:35 pm CDT.

How long on average sun shines in September in Park Ridge?

In September, the average sunshine duration in Park Ridge, Illinois, is 8.9h.

What is the UV index reading in September in Park Ridge?

The average daily maximum UV index in September in Park Ridge is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Park Ridge, IL

Average temperature in September - Park Ridge, IL
  • Average high temperature in September: 72.3°F

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in September: 59.9°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 (18.9°F).

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Average pressure in September
Park Ridge, IL

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

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in September
Park Ridge, IL

Average wind speed in September - Park Ridge, IL
  • Average wind speed in September: 8.3mph

The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest month (with the lowest average wind speed) is August (7mph).

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Average humidity in September
Park Ridge, IL

Average humidity in September - Park Ridge, IL
  • Average humidity in September: 74%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in September
Park Ridge, IL

Average rainfall in September - Park Ridge, IL
  • Average rainfall in September: 0.67"

The wettest month (with the highest rainfall) is May (1.06").
The driest month (with the least rainfall) is December (0.31").

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Average rainfall days in September
Park Ridge, IL

Average rainfall days in September - Park Ridge, IL
  • Average rainfall days in September: 9.4 days

The month with the highest number of rainy days is May (12.3 days).
The month with the least rainy days is February (2.8 days).

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Average snowfall in September
Park Ridge, IL

Average snowfall in September - Park Ridge, IL
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.98").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Park Ridge, IL

Average snowfall days in September - Park Ridge, IL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Park Ridge, IL

Average daylight in September / Average sunshine in September - Park Ridge, IL
  • Average daylight in September: 12h and 28min

The month with the longest days is June (Average daylight: 15h and 11min).
The month with the shortest days is December (Average daylight: 9h and 11min).

  • Average sunshine in September: 8h and 54min

The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in September
Park Ridge, IL

Average sunshine days in September - Park Ridge, IL
  • Average sunshine days in September: 17.5 days

The month with the most sunshine days is December (23.3 days).
The month with the least sunshine days is June (14.7 days).

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Average UV index in September
Park Ridge, IL

Average UV index in September - Park Ridge, 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
Park Ridge, IL

Average cloud cover in September - Park Ridge, IL
  • Average cloud cover in September: 31

The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 28).

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Average visibility in September
Park Ridge, IL

Average visibility in September - Park Ridge, 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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