October weather forecast
Saint Jacob, IL

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Weather in October

October, the same as September, is another comfortable autumn month in Saint Jacob, Illinois, with an average temperature ranging between min 48.9°F (9.4°C) and max 65.7°F (18.7°C).

Temperature

October comes with a decrease in the average high-temperature, falling from a warm 78.1°F (25.6°C) in September to a refreshing 65.7°F (18.7°C). Throughout October, Saint Jacob experiences a low-temperature average of 48.9°F (9.4°C).

Humidity

With an average relative humidity of 71%, October is the least humid month.

Rainfall

In Saint Jacob, Illinois, in October, it is raining for 7.3 days, with typically 1.02" (26mm) of accumulated precipitation. Throughout the year, there are 110.6 rainfall days, and 12.01" (305mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Saint Jacob are January through March, October through December. October is the first month it typically snows in Saint Jacob, Illinois. Throughout October, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, in Saint Jacob, there are 15.9 snowfall days, and 2.32" (59mm) of snow is accumulated.

Daylight

In October, the average length of the day in Saint Jacob is 11h and 10min.
On the first day of October in Saint Jacob, Illinois, sunrise is at 6:55 am and sunset at 6:41 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 5:59 pm CDT.

Sunshine

In Saint Jacob, the average sunshine in October is 6.3h.

UV index

The average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 3 in October translates into this advice:
Take necessary precautions - Protection from skin and eye injury is mandatory. 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. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
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Frequently asked questions

What is the temperature in October in Saint Jacob?

In October, the average high-temperature and low-temperature are 65.7°F (18.7°C) and 48.9°F (9.4°C) respectively. In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, is evaluated at 93.2°F (34°C).

What is the least humid month in Saint Jacob?

The least humid month in Saint Jacob is October, with an average relative humidity of 71%.

What is the average humidity in October in Saint Jacob?

In Saint Jacob, the average relative humidity in October is 71%.

How many days does it rain in October in Saint Jacob?

In Saint Jacob, in October, during 7.3 rainfall days, 1.02" (26mm) of precipitation is typically accumulated.

When does it start snowing in Saint Jacob?

October is the first month it typically snows in Saint Jacob, Illinois. Throughout October, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow.

What is the average length of the day in October in Saint Jacob?

In Saint Jacob, Illinois, the average day length in October is 11h and 10min.

What time are sunrise and sunset in October in Saint Jacob?

In October, on the first day of the month, sunrise is at 6:55 am and sunset at 6:41 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 5:59 pm CDT.

How many hours of sunshine does Saint Jacob have in October?

In Saint Jacob, Illinois, the average sunshine duration in October is 6.3h.

What is the UV index intensity in October in Saint Jacob?

The average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe 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 October
Saint Jacob, IL

Average temperature in October - Saint Jacob, IL
  • Average high temperature in October: 65.7°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in October: 48.9°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).

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Average pressure in October
Saint Jacob, IL

Average pressure in October - Saint Jacob, IL
  • Average pressure in October: 30.03"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in October
Saint Jacob, IL

Average wind speed in October - Saint Jacob, IL
  • Average wind speed in October: 8.2mph

The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

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Average humidity in October
Saint Jacob, IL

Average humidity in October - Saint Jacob, IL
  • Average humidity in October: 71%

The months with the highest relative humidity are July and August (80%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in October
Saint Jacob, IL

Average rainfall in October - Saint Jacob, IL
  • Average rainfall in October: 1.02"

The wettest month (with the highest rainfall) is May (1.46").
The driest month (with the least rainfall) is February (0.55").

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Average rainfall days in October
Saint Jacob, IL

Average rainfall days in October - Saint Jacob, IL
  • Average rainfall days in October: 7.3 days

The month with the highest number of rainy days is May (13.1 days).
The months with the least rainy days are January and December (5.9 days).

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Average snowfall in October
Saint Jacob, IL

Average snowfall in October - Saint Jacob, IL
  • Average snowfall in October: 0.04"

The month with the highest snowfall is December (0.94").
The months with the least snowfall are April, May, June, July, August and September (0").

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Average snowfall days in October
Saint Jacob, IL

Average snowfall days in October - Saint Jacob, IL
  • Average snowfall days in October: 0.1 days

The months with the highest number of snowfall days are January and February (4.8 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
Saint Jacob, IL

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

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in October: 6h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).

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Average sunshine days in October
Saint Jacob, IL

Average sunshine days in October - Saint Jacob, IL
  • Average sunshine days in October: 21.5 days

The month with the most sunshine days is December (21.8 days).
The month with the least sunshine days is July (14.5 days).

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Average UV index in October
Saint Jacob, IL

Average UV index in October - Saint Jacob, IL
  • Average UV index in October: 3

The months with the highest UV index are May, 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 October
Saint Jacob, IL

Average cloud cover in October - Saint Jacob, IL
  • Average cloud cover in October: 32

The months with the most cloud cover are January and February (Cloud cover 50).
The months with the least cloud cover are June, July, August and September (Cloud cover 28).

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Average visibility in October
Saint Jacob, IL

Average visibility in October - Saint Jacob, 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).

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Saint Jacob, Illinois, USA

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