October weather forecast
Porterfield, IL

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Weather in October

October, the same as September, is another enjoyable autumn month in Porterfield, Illinois, with an average temperature fluctuating between 61.7°F (16.5°C) and 46°F (7.8°C).

Temperature

In Porterfield, the average high-temperature in October decreases from a warm 75°F (23.9°C) in September to an enjoyable 61.7°F (16.5°C). Throughout October, the average low-temperature records at a chilly 46°F (7.8°C).

Humidity

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

Rainfall

In Porterfield, in October, it is raining for 12.6 days, with typically 2.91" (74mm) of accumulated precipitation. In Porterfield, during the entire year, the rain falls for 151.3 days and collects up to 30.16" (766mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 0.3 snowfall days, it receives 0.24" (6mm) of snow. Throughout the year, in Porterfield, Illinois, there are 36.7 snowfall days, and 14.09" (358mm) of snow is accumulated.

Daylight

In Porterfield, the average length of the day in October is 11h and 5min.
On the first day of the month, sunrise is at 6:54 am and sunset at 6:38 pm. On the last day of October, sunrise is at 7:27 am and sunset at 5:53 pm CDT.

Sunshine

In October, the average sunshine is 5.8h.

UV index

The average daily maximum UV index in October in Porterfield is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high UV index of 3 in October translates into the following recommendations:
Put precautions into practice - Protective measures against sun-induced damage are advised. It's recommended to limit sun exposure when its radiation is at its peak during midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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Frequently asked questions

What is the average October temperature in Porterfield?

The average high-temperature, in October, in Porterfield, is 61.7°F (16.5°C), while the average low-temperature is 46°F (7.8°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, in July is calculated to be 87.8°F (31°C).

What is the least humid month in Porterfield?

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

What is the average humidity in October in Porterfield?

The average relative humidity in October is 72%.

How many days does it rain in October in Porterfield?

In October, in Porterfield, Illinois, the rain falls for 12.6 days. Throughout October, 2.91" (74mm) of precipitation is accumulated.

When does it start snowing in Porterfield?

October is the first month it typically snows in Porterfield, Illinois. Throughout October, in the average 0.3 snowfall days, it receives 0.24" (6mm) of snow.

How many hours of daylight does Porterfield have in October?

In October, the average day length is 11h and 5min.

What time are sunrise and sunset in October in Porterfield?

On the first day of October in Porterfield, Illinois, sunrise is at 6:54 am and sunset at 6:38 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:53 pm CDT.

How long on average sun shines in October in Porterfield?

The average sunshine duration in October in Porterfield is 5.8h.

What is the UV index reading in October in Porterfield?

In October, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
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
Porterfield, IL

Average temperature in October - Porterfield, IL
  • Average high temperature in October: 61.7°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.3°F).

  • Average low temperature in October: 46°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).

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Average pressure in October
Porterfield, IL

Average pressure in October - Porterfield, IL
  • Average pressure in October: 30.01"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in October
Porterfield, IL

Average wind speed in October - Porterfield, IL
  • Average wind speed in October: 9.3mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

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Average humidity in October
Porterfield, IL

Average humidity in October - Porterfield, IL
  • Average humidity in October: 72%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in October
Porterfield, IL

Average rainfall in October - Porterfield, IL
  • Average rainfall in October: 2.91"

The wettest month (with the highest rainfall) is May (4.41").
The driest months (with the least rainfall) are January and December (1.57").

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Average rainfall days in October
Porterfield, IL

Average rainfall days in October - Porterfield, IL
  • Average rainfall days in October: 12.6 days

The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is February (5.9 days).

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Average snowfall in October
Porterfield, IL

Average snowfall in October - Porterfield, IL
  • Average snowfall in October: 0.24"

The month with the highest snowfall is February (3.7").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in October
Porterfield, IL

Average snowfall days in October - Porterfield, IL
  • Average snowfall days in October: 0.3 days

The month with the highest number of snowfall days is January (11.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in October /
Average sunshine in October
Porterfield, IL

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

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in October: 5h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

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Average sunshine days in October
Porterfield, IL

Average sunshine days in October - Porterfield, IL
  • Average sunshine days in October: 15.9 days

The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is May (10.7 days).

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Average UV index in October
Porterfield, IL

Average UV index in October - Porterfield, IL
  • Average UV index in October: 3

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

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Average cloud cover in October
Porterfield, IL

Average cloud cover in October - Porterfield, IL
  • Average cloud cover in October: 39

The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 32).

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Average visibility in October
Porterfield, IL

Average visibility in October - Porterfield, IL
  • Average visibility in October: 6mi

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

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Porterfield, Illinois, USA

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