September weather forecast
Clare, IL

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Weather in September

The first month of the autumn, September, is also an agreeable month in Clare, Illinois, with an average temperature ranging between min 54.5°F (12.5°C) and max 73°F (22.8°C).

Temperature

The arrival of September is marked by a minor reduction in average high-temperature, sliding from a moderately hot 78.4°F (25.8°C) in August to an agreeable 73°F (22.8°C). In Clare, the average low-temperature during the month of September is a fresh 54.5°F (12.5°C).

Humidity

In Clare, the average relative humidity in September is 80%.

Rainfall

In Clare, in September, during 12.2 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. In Clare, during the entire year, the rain falls for 152.6 days and collects up to 32.09" (815mm) of precipitation.

Snowfall

June through September are months without snowfall in Clare.

Daylight

The average length of the day in September is 12h and 28min.
On the first day of the month, sunrise is at 6:21 am and sunset at 7:28 pm. On the last day of September, sunrise is at 6:52 am and sunset at 6:38 pm CDT.

Sunshine

In September, the average sunshine is 8.5h.

UV index

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 4 during September translates into these guidelines:
Take precautions - Protection against sun damage is advised. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Updated: Jun 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in September?

During September, Clare experiences an average high-temperature of 73°F (22.8°C) and a low-temperature of 54.5°F (12.5°C).

What is the average humidity in September?

In September, the average relative humidity is 80%.

How many days does it rain in September?

In Clare, in September, during 12.2 rainfall days, 2.24" (57mm) of precipitation is typically accumulated.

When it does not snow?

In Clare, snow does not fall in June through September.

Does it snow in September?

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

What is the average length of the day in September?

In Clare, the average day length in September is 12h and 28min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:21 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:38 pm CDT.

How many hours of sunshine does Clare have in September?

In September, the average sunshine duration is 8.5h.

How high is the UV index in September?

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health 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
Clare, IL

Average temperature in September - Clare, IL
  • Average high temperature in September: 73°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (27°F).

  • Average low temperature in September: 54.5°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).

Average pressure in September
Clare, IL

Average pressure in September - Clare, 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).

Average wind speed in September
Clare, IL

Average wind speed in September - Clare, IL
  • Average wind speed in September: 7.2mph

The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

Average humidity in September
Clare, IL

Average humidity in September - Clare, IL
  • Average humidity in September: 80%

The months with the highest relative humidity are January and July (85%).
The months with the lowest relative humidity are April and October (75%).

Average rainfall in September
Clare, IL

Average rainfall in September - Clare, IL
  • Average rainfall in September: 2.24"

The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is February (1.65").

Average rainfall days in September
Clare, IL

Average rainfall days in September - Clare, IL
  • Average rainfall days in September: 12.2 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (4.7 days).

Average snowfall in September
Clare, IL

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

The month with the highest snowfall is January (5.55").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Clare, IL

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

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Clare, IL
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in September: 8h and 3min

The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days in September
Clare, IL

Average sunshine days in September - Clare, IL
  • Average sunshine days in September: 15.7 days

The month with the most sunshine days is November (17.2 days).
The months with the least sunshine days are June and July (10.3 days).

Average UV index in September
Clare, IL

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

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

Average cloud cover in September
Clare, IL

Average cloud cover in September - Clare, IL
  • Average cloud cover in September: 35

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 35).

Average visibility in September
Clare, IL

Average visibility in September - Clare, IL
  • Average visibility in September: 5mi

The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).

Clare, Illinois, USA

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