September weather forecast
Montrose, IL

Weather in September

September, the first month of the autumn in Montrose, is still a warm month, with an average temperature ranging between min 59.4°F (15.2°C) and max 77.4°F (25.2°C).

Temperature

In Montrose, the average high-temperature in September is relatively the same as in August - a still moderately hot 77.4°F (25.2°C). In September, the average low-temperature is 59.4°F (15.2°C).

Humidity

In September, the average relative humidity is 75%.

Rainfall

In Montrose, during 11.3 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. Throughout the year, there are 135.9 rainfall days, and 21.89" (556mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Montrose, Illinois.

Daylight

The average length of the day in September in Montrose, Illinois, is 12h and 26min.
On the first day of September in Montrose, sunrise is at 6:22 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:38 pm CDT.

Sunshine

The average sunshine in September in Montrose, Illinois, is 9.2h.

UV index

In September, the average daily maximum UV index in Montrose is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The average daily UV index of 5 in September transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Montrose?

In Montrose, Illinois, in September, the average high-temperature is 77.4°F (25.2°C), and the average low-temperature is 59.4°F (15.2°C). in August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, is computed to be 89.6°F (32°C).

What is the average humidity in September in Montrose?

In Montrose, the average relative humidity in September is 75%.

How much does it rain in Montrose in September?

In Montrose, Illinois, during September, the rain falls for 11.3 days and regularly aggregates up to 1.14" (29mm) of precipitation.

When it does not snow in Montrose?

May through October are months without snowfall in Montrose, Illinois.

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

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

When are sunrise and sunset in September in Montrose?

In September, on the first day of the month, sunrise is at 6:22 am and sunset at 7:24 pm. On the last day of the month, in Montrose, sunrise is at 6:48 am and sunset at 6:38 pm CDT.

How long on average sun shines in September in Montrose?

In September, the average sunshine duration in Montrose is 9.2h.

What is the UV index reading in September in Montrose?

The average daily maximum UV index in September in Montrose, Illinois, is 5. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Montrose, IL

Average temperature in September - Montrose, IL
  • Average high temperature in September: 77.4°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in September: 59.4°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (23°F).

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Average pressure in September
Montrose, IL

Average pressure in September - Montrose, 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 (29.93"Hg).

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Average wind speed in September
Montrose, IL

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

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is July (6mph).

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Average humidity in September
Montrose, IL

Average humidity in September - Montrose, IL
  • Average humidity in September: 75%

The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in September
Montrose, IL

Average rainfall in September - Montrose, IL
  • Average rainfall in September: 1.14"

The wettest month (with the highest rainfall) is April (2.83").
The driest month (with the least rainfall) is February (1.06").

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Average rainfall days in September
Montrose, IL

Average rainfall days in September - Montrose, IL
  • Average rainfall days in September: 11.3 days

The month with the highest number of rainy days is July (15.2 days).
The month with the least rainy days is January (6.9 days).

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Average snowfall in September
Montrose, IL

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

The month with the highest snowfall is January (1.18").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Montrose, IL

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

The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in September / Average sunshine in September - Montrose, IL
  • Average daylight in September: 12h and 26min

The month with the longest days is June (Average daylight: 14h and 53min).
The month with the shortest days is December (Average daylight: 9h and 28min).

  • Average sunshine in September: 9h and 12min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

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Average sunshine days in September
Montrose, IL

Average sunshine days in September - Montrose, IL
  • Average sunshine days in September: 16.6 days

The month with the most sunshine days is January (20 days).
The month with the least sunshine days is May (12.9 days).

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Average UV index in September
Montrose, IL

Average UV index in September - Montrose, 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
Montrose, IL

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

The months with the most cloud cover are January and February (Cloud cover 53).
The months with the least cloud cover are June and September (Cloud cover 29).

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Average visibility in September
Montrose, IL

Average visibility in September - Montrose, 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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