October weather forecast
Serena, IL

Weather in October

October, the same as September, is another enjoyable autumn month in Serena, Illinois, with an average temperature fluctuating between 61.7°F (16.5°C) and 45.5°F (7.5°C).

Temperature

In October, the average high-temperature drops from a warm 74.5°F (23.6°C) in September to an enjoyable 61.7°F (16.5°C). The average low-temperature, in October, is 45.5°F (7.5°C).

Humidity

With an average relative humidity of 73%, October is the least humid month.

Rainfall

In Serena, in October, during 8.1 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. In Serena, Illinois, during the entire year, the rain falls for 97.4 days and collects up to 8.07" (205mm) of precipitation.

Snowfall

Months with snowfall in Serena, Illinois, are January through April, October through December. October is the first month it typically snows. Throughout October, in the average 0.4 snowfall days, it receives 0.16" (4mm) of snow. In Serena, during the entire year, snow falls for 26.1 days and aggregates up to 3.54" (90mm) of snow.

Daylight

In October, the average length of the day in Serena is 11h and 5min.
On the first day of October, sunrise is at 6:51 am and sunset at 6:37 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 5:51 pm CDT.

Sunshine

The average sunshine in October in Serena, Illinois, is 5.7h.

UV index

In Serena, the average daily maximum UV index in October is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: In October, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in October in Serena?

The average high-temperature, in October, is 61.7°F (16.5°C), while the average low-temperature is 45.5°F (7.5°C). in July, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, is evaluated at 87.8°F (31°C).

What is the least humid month in Serena?

With an average relative humidity of 73%, October is the least humid month.

What is the average humidity in October in Serena?

The average relative humidity in October is 73%.

How much does it rain in Serena in October?

In Serena, during October, the rain falls for 8.1 days and regularly aggregates up to 0.75" (19mm) of precipitation.

When does it start snowing in Serena?

October is the first month it typically snows in Serena. Throughout October, in the average 0.4 snowfall days, it receives 0.16" (4mm) of snow.

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

The average day length in October in Serena, Illinois, is 11h and 5min.

When are sunrise and sunset in October in Serena?

On the first day of October in Serena, Illinois, sunrise is at 6:51 am and sunset at 6:37 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 5:51 pm CDT.

How many hours of sunshine does Serena have in October?

In October, the average sunshine duration in Serena is 5.7h.

How high is the UV index in October in Serena?

In October, the average daily maximum UV index in Serena, Illinois, is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Serena, IL

Average temperature in October - Serena, 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 (28.8°F).

  • Average low temperature in October: 45.5°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

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Average pressure in October
Serena, IL

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

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in October
Serena, IL

Average wind speed in October - Serena, IL
  • Average wind speed in October: 8.8mph

The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (6mph).

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Average humidity in October
Serena, IL

Average humidity in October - Serena, IL
  • Average humidity in October: 73%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in October
Serena, IL

Average rainfall in October - Serena, IL
  • Average rainfall in October: 0.75"

The wettest month (with the highest rainfall) is May (1.14").
The driest month (with the least rainfall) is November (0.35").

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Average rainfall days in October
Serena, IL

Average rainfall days in October - Serena, IL
  • Average rainfall days in October: 8.1 days

The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is January (3 days).

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Average snowfall in October
Serena, IL

Average snowfall in October - Serena, IL
  • Average snowfall in October: 0.16"

The month with the highest snowfall is January (0.98").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in October
Serena, IL

Average snowfall days in October - Serena, IL
  • Average snowfall days in October: 0.4 days

The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in October / Average sunshine in October - Serena, IL
  • Average daylight in October: 11h and 5min

The month with the longest days is June (Average daylight: 15h and 8min).
The month with the shortest days is December (Average daylight: 9h and 14min).

  • Average sunshine in October: 5h and 42min

The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

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Average sunshine days in October
Serena, IL

Average sunshine days in October - Serena, IL
  • Average sunshine days in October: 20.6 days

The month with the most sunshine days is December (23 days).
The month with the least sunshine days is May (14.7 days).

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Average UV index in October
Serena, IL

Average UV index in October - Serena, 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 and December (UV index 1).

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Average cloud cover in October
Serena, IL

Average cloud cover in October - Serena, IL
  • Average cloud cover in October: 41

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 33).

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Average visibility in October
Serena, IL

Average visibility in October - Serena, 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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