October weather forecast
Williamsville, IL

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Weather in October

October, like September, in Williamsville, Illinois, is another refreshing autumn month, with an average temperature varying between 48.2°F (9°C) and 64°F (17.8°C).

Temperature

Williamsville's October weather shows a moderate shift in high-temperatures, falling from September's warm 77.2°F (25.1°C) to a comfortable 64°F (17.8°C). An average temperature of 48.2°F (9°C) marks the nights in October.

Humidity

October is the least humid month, with an average relative humidity of 70%.

Rainfall

In October, in Williamsville, Illinois, the rain falls for 9.5 days. Throughout October, 1.46" (37mm) of precipitation is accumulated. In Williamsville, during the entire year, the rain falls for 131.5 days and collects up to 18.54" (471mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In Williamsville, the average length of the day in October is 11h and 8min.
On the first day of October in Williamsville, Illinois, sunrise is at 6:55 am and sunset at 6:40 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 5:56 pm CDT.

Sunshine

In Williamsville, the average sunshine in October is 6.1h.

UV index

In Williamsville, the average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: In October, a daily UV index of 3 turns into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
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Frequently asked questions

What is the temperature in October in Williamsville?

The average high-temperature, in October, in Williamsville, is 64°F (17.8°C), while the average low-temperature is 48.2°F (9°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in August is appraised at 87.8°F (31°C).

What is the least humid month in Williamsville?

With an average relative humidity of 70%, October is the least humid month in Williamsville.

What is the average humidity in October in Williamsville?

The average relative humidity in October in Williamsville is 70%.

How much does it rain in Williamsville in October?

In Williamsville, during October, the rain falls for 9.5 days and regularly aggregates up to 1.46" (37mm) of precipitation.

When it does not snow in Williamsville?

In Williamsville, Illinois, snow does not fall in May through October.

Does it snow in Williamsville in October?

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

What is the average length of the day in October in Williamsville?

The average day length in October in Williamsville, Illinois, is 11h and 8min.

What time are sunrise and sunset in October in Williamsville?

On the first day of October in Williamsville, sunrise is at 6:55 am and sunset at 6:40 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 5:56 pm CDT.

How many hours of sunshine does Williamsville have in October?

The average sunshine duration in October is 6.1h.

How high is the UV index in October in Williamsville?

In October, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium health risk from 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
Williamsville, IL

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

The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (33.1°F).

  • Average low temperature in October: 48.2°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).

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Average pressure in October
Williamsville, IL

Average pressure in October - Williamsville, IL
  • Average pressure in October: 30.02"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in October
Williamsville, IL

Average wind speed in October - Williamsville, IL
  • Average wind speed in October: 9.1mph

The windiest months (with the highest average wind speed) are January and April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).

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Average humidity in October
Williamsville, IL

Average humidity in October - Williamsville, IL
  • Average humidity in October: 70%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in October
Williamsville, IL

Average rainfall in October - Williamsville, IL
  • Average rainfall in October: 1.46"

The wettest month (with the highest rainfall) is June (2.36").
The driest month (with the least rainfall) is December (0.83").

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Average rainfall days in October
Williamsville, IL

Average rainfall days in October - Williamsville, IL
  • Average rainfall days in October: 9.5 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (5.7 days).

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Average snowfall in October
Williamsville, IL

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

The month with the highest snowfall is January (1.81").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in October
Williamsville, IL

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

The month with the highest number of snowfall days is January (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
Williamsville, IL

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

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in October: 6h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in October
Williamsville, IL

Average sunshine days in October - Williamsville, IL
  • Average sunshine days in October: 20 days

The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is May (11.5 days).

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Average UV index in October
Williamsville, IL

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

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 October
Williamsville, IL

Average cloud cover in October - Williamsville, IL
  • Average cloud cover in October: 35

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are June, August and September (Cloud cover 30).

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Average visibility in October
Williamsville, IL

Average visibility in October - Williamsville, 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).

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Williamsville, Illinois, USA

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