October weather forecast
Vermilion, IL

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Weather in October

October, like September, in Vermilion, Illinois, is another comfortable autumn month, with an average temperature fluctuating between 47.7°F (8.7°C) and 64°F (17.8°C).

Temperature

With the onset of October, Vermilion experiences a modest temperature adjustment, with the average high-temperature receding from a moderately hot 77.2°F (25.1°C) in September to an enjoyable 64°F (17.8°C). Vermilion observes an average low-temperature of 47.7°F (8.7°C) during October.

Humidity

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

Rainfall

In Vermilion, during October, the rain falls for 9.9 days and regularly aggregates up to 1.69" (43mm) of precipitation. Throughout the year, there are 133.4 rainfall days, and 19.49" (495mm) of precipitation is accumulated.

Snowfall

In Vermilion, snow does not fall in May through October.

Daylight

In Vermilion, the average length of the day in October is 11h and 8min.
On the first day of October, sunrise is at 6:47 am and sunset at 6:32 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 5:49 pm CDT.

Sunshine

In Vermilion, the average sunshine in October is 6.5h.

UV index

The average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high daily UV index of 3 during October translates into the following directions:
Heed the precautions - It is counselled to guard against solar damage. It's recommended to limit sun exposure when its radiation is at its peak during midday. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Updated: Jun 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in October?

During October, Vermilion experiences an average high-temperature of 64°F (17.8°C) and a low-temperature of 47.7°F (8.7°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is evaluated at 87.8°F (31°C).

What is the least humid month?

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

What is the average humidity in October?

In October, the average relative humidity is 71%.

How many days does it rain in October?

In Vermilion, during October, the rain falls for 9.9 days and regularly aggregates up to 1.69" (43mm) of precipitation.

When it does not snow?

May through October are months without snowfall.

Does it snow in October?

In Vermilion, in October, it doesn't snow. In November, it regularly snows.

How many hours of daylight does Vermilion have in October?

In October, the average day length is 11h and 8min.

When are sunrise and sunset in October?

On the first day of October, sunrise is at 6:47 am and sunset at 6:32 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 5:49 pm CDT.

How many hours of sunshine does Vermilion have in October?

In Vermilion, Illinois, the average sunshine duration in October is 6.5h.

How high is the UV index in October?

In October, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate health threat 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
Vermilion, IL

Average temperature in October - Vermilion, IL
  • Average high temperature in October: 64°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (33.8°F).

  • Average low temperature in October: 47.7°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).

Average pressure in October
Vermilion, IL

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

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in October
Vermilion, IL

Average wind speed in October - Vermilion, IL
  • Average wind speed in October: 8.9mph

The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.1mph).

Average humidity in October
Vermilion, IL

Average humidity in October - Vermilion, IL
  • Average humidity in October: 71%

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).

Average rainfall in October
Vermilion, IL

Average rainfall in October - Vermilion, IL
  • Average rainfall in October: 1.69"

The wettest month (with the highest rainfall) is April (2.76").
The driest month (with the least rainfall) is February (0.94").

Average rainfall days in October
Vermilion, IL

Average rainfall days in October - Vermilion, IL
  • Average rainfall days in October: 9.9 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (6.3 days).

Average snowfall in October
Vermilion, IL

Average snowfall in October - Vermilion, IL
  • Average snowfall in October: 0"

The month with the highest snowfall is December (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in October
Vermilion, IL

Average snowfall days in October - Vermilion, IL
  • Average snowfall days in October: 0.1 days

The month with the highest number of snowfall days is January (6.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in October: 6h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in October
Vermilion, IL

Average sunshine days in October - Vermilion, IL
  • Average sunshine days in October: 18.6 days

The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (11.3 days).

Average UV index in October
Vermilion, IL

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

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in October
Vermilion, IL

Average cloud cover in October - Vermilion, IL
  • Average cloud cover in October: 36

The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are June, August and September (Cloud cover 31).

Average visibility in October
Vermilion, IL

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

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

Vermilion, Illinois, USA

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