October weather forecast
Des Plaines, IL

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Weather in October

October further consolidates the presence of autumn in Des Plaines with a marked drop in temperatures. It's not as warm as September, and the city begins to experience cooler nights. The fall foliage displays gorgeous hues, providing a scenic backdrop to this weather change. While rain is uncommon, the first snowfall can be expected, marking the creeping approach of winter. The transition of the weather from October to November signifies the shift from fall to the early threshold of winter.

Temperature

Transition from September to October is accompanied by a temperature drop, with average high-temperatures decreasing from a pleasant 72.5°F (22.5°C) to a mild 59.9°F (15.5°C). Throughout October, the temperature tends to fall to a consistent average low of 47.3°F (8.5°C).

Humidity

With an average relative humidity of 72%, October is the least humid month.

Rainfall

In Des Plaines, in October, during 12.7 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. In Des Plaines, during the entire year, the rain falls for 153.1 days and collects up to 32.01" (813mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. October is the first month it typically snows in Des Plaines, Illinois. Throughout October, in the average 0.4 snowfall days, it receives 0.43" (11mm) of snow. Throughout the year, there are 41.4 snowfall days, and 17.52" (445mm) of snow is accumulated.

Daylight

In Des Plaines, Illinois, the average length of the day in October is 11h and 4min.
On the first day of October in Des Plaines, sunrise is at 6:49 am and sunset at 6:32 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:46 pm CDT.

Sunshine

In Des Plaines, the average sunshine in October is 5.6h.

UV index

In Des Plaines, the average daily maximum UV index in October is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 2 during October translates into the following guidance:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.

Frequently asked questions

What are October temperatures?

The average high-temperature and low-temperature during October are 59.9°F (15.5°C) and 47.3°F (8.5°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in July is computed to be 84.2°F (29°C).

What is the least humid month?

With an average relative humidity of 72%, October is the least humid month.

What is the average humidity in October?

In Des Plaines, the average relative humidity in October is 72%.

How many days does it rain in October?

In Des Plaines, during October, the rain falls for 12.7 days and regularly aggregates up to 2.56" (65mm) of precipitation.

When does it start to snow?

October is the first month it typically snows. Throughout October, in the average 0.4 snowfall days, it receives 0.43" (11mm) of snow.

What is the average length of the day in October in Des Plaines?

The average day length in October is 11h and 4min.

What time are sunrise and sunset in October in Des Plaines?

On the first day of October in Des Plaines, Illinois, sunrise is at 6:49 am and sunset at 6:32 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:46 pm CDT.

How many hours of sunshine does Des Plaines have in October?

In Des Plaines, the average sunshine duration in October is 5.6h.

What is the UV index reading in October?

The average daily maximum UV index in October is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Des Plaines, IL

Average temperature in October - Des Plaines, IL
  • Average high temperature in October: 59.9°F

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in October: 47.3°F

The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).

Average pressure in October
Des Plaines, IL

Average pressure in October - Des Plaines, IL
  • Average pressure in October: 30"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 October
Des Plaines, IL

Average wind speed in October - Des Plaines, IL
  • Average wind speed in October: 9.7mph

The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).

Average humidity in October
Des Plaines, IL

Average humidity in October - Des Plaines, IL
  • Average humidity in October: 72%

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

Average rainfall in October
Des Plaines, IL

Average rainfall in October - Des Plaines, IL
  • Average rainfall in October: 2.56"

The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is December (1.5").

Average rainfall days in October
Des Plaines, IL

Average rainfall days in October - Des Plaines, IL
  • Average rainfall days in October: 12.7 days

The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is February (5.3 days).

Average snowfall in October
Des Plaines, IL

Average snowfall in October - Des Plaines, IL
  • Average snowfall in October: 0.43"

The month with the highest snowfall is February (4.84").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in October
Des Plaines, IL

Average snowfall days in October - Des Plaines, IL
  • Average snowfall days in October: 0.4 days

The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in October /
Average sunshine in October
Des Plaines, IL

Average daylight in October / Average sunshine in October - Des Plaines, IL
  • Average daylight in October: 11h and 1min

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 October: 5h and 4min

The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in October
Des Plaines, IL

Average sunshine days in October - Des Plaines, IL
  • Average sunshine days in October: 15.5 days

The months with the most sunshine days are November and December (16.9 days).
The month with the least sunshine days is April (10.4 days).

Average UV index in October
Des Plaines, IL

Average UV index in October - Des Plaines, IL
  • Average UV index in October: 2

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in October
Des Plaines, IL

Average cloud cover in October - Des Plaines, IL
  • Average cloud cover in October: 43

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 29).

Average visibility in October
Des Plaines, IL

Average visibility in October - Des Plaines, IL
  • Average visibility in October: 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).

Des Plaines, Illinois, USA

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