November weather forecast
O'Fallon, IL

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Weather in November

The last month of the autumn, November, is also a fresh month in O'Fallon, Illinois, with temperature in the range of an average low of 38.1°F (3.4°C) and an average high of 53.1°F (11.7°C).

Temperature

As October transitions into November, O'Fallon sees a drop in the average high-temperature, transitioning from a refreshing 66.6°F (19.2°C) to a fresh 53.1°F (11.7°C). During November, the average low-temperature is an icy 38.1°F (3.4°C).

Humidity

The average relative humidity in November in O'Fallon is 73%.

Rainfall

In O'Fallon, Illinois, in November, during 5.9 rainfall days, 0.35" (9mm) of precipitation is typically accumulated. Throughout the year, there are 108.8 rainfall days, and 10.24" (260mm) of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall. November is the first month it typically snows in O'Fallon. Throughout November, in the average 0.7 snowfall days, it receives 0.04" (1mm) of snow. In O'Fallon, during the entire year, snow falls for 13.3 days and aggregates up to 1.14" (29mm) of snow.

Daylight

In O'Fallon, the average length of the day in November is 10h and 5min.
On the first day of November, sunrise is at 7:27 am and sunset at 5:59 pm CDT. On the last day of the month, sunrise is at 6:58 am and sunset at 4:39 pm CST.
Note: On Sunday, November 3. 2024, at 2:00 am, Daylight Saving Time ends, and the time zone changes from CDT to CST. Daylight Saving Time starts again on Sunday, March 9. 2025, at 2:00 am; consequently, the time zone reverts from CST to CDT.

Sunshine

The average sunshine in November is 5.3h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 2 in November translates into these instructions:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. To avoid the Sun's strongest rays, limit exposure around the mid-day period. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
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Frequently asked questions

What is the average November temperature in O'Fallon?

The average high-temperature, in November, in O'Fallon, is 53.1°F (11.7°C), while the average low-temperature is 38.1°F (3.4°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in August is calculated to be 95°F (35°C).

What is the average humidity in November in O'Fallon?

The average relative humidity in November in O'Fallon is 73%.

How much does it rain in O'Fallon in November?

In O'Fallon, in November, during 5.9 rainfall days, 0.35" (9mm) of precipitation is typically accumulated.

When does it start snowing in O'Fallon?

November is the first month it typically snows in O'Fallon, Illinois. Throughout November, in the average 0.7 snowfall days, it receives 0.04" (1mm) of snow.

What is the average length of the day in November in O'Fallon?

In O'Fallon, the average day length in November is 10h and 5min.

When are sunrise and sunset in November in O'Fallon?

In November, on the first day of the month, sunrise is at 7:27 am and sunset at 5:59 pm CDT. On the last day of the month, in O'Fallon, Illinois, sunrise is at 6:58 am and sunset at 4:39 pm CST.

When does Daylight Saving Time (DST) end in November in O'Fallon?

On Sunday, November 3. 2024, at 2:00 am, Daylight Saving Time ends in O'Fallon, Illinois, and the time zone changes from CDT to CST. The next DST starts Sunday, March 9. 2025, at 2:00 am.

How long on average sun shines in November in O'Fallon?

In November, the average sunshine duration in O'Fallon, Illinois, is 5.3h.

When is the lowest UV index in O'Fallon?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

How high is the UV index in November in O'Fallon?

In O'Fallon, Illinois, the average daily maximum UV index in November is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from exposure to the Sun's UV radiation.
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 November
O'Fallon, IL

Average temperature in November - O
  • Average high temperature in November: 53.1°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in November: 38.1°F

The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).

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Average pressure in November
O'Fallon, IL

Average pressure in November - O
  • Average pressure in November: 30.13"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in November
O'Fallon, IL

Average wind speed in November - O
  • Average wind speed in November: 8.8mph

The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).

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Average humidity in November
O'Fallon, IL

Average humidity in November - O
  • Average humidity in November: 73%

The months with the highest relative humidity are May, July and August (79%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in November
O'Fallon, IL

Average rainfall in November - O
  • Average rainfall in November: 0.35"

The wettest month (with the highest rainfall) is July (1.42").
The driest month (with the least rainfall) is December (0.31").

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Average rainfall days in November
O'Fallon, IL

Average rainfall days in November - O
  • Average rainfall days in November: 5.9 days

The month with the highest number of rainy days is July (13.1 days).
The month with the least rainy days is December (4.6 days).

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Average snowfall in November
O'Fallon, IL

Average snowfall in November - O
  • Average snowfall in November: 0.04"

The month with the highest snowfall is January (0.51").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in November
O'Fallon, IL

Average snowfall days in November - O
  • Average snowfall days in November: 0.7 days

The month with the highest number of snowfall days is January (4.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in November /
Average sunshine in November
O'Fallon, IL

Average daylight in November / Average sunshine in November - O
  • Average daylight in November: 10h 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 November: 5h and 2min

The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

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Average sunshine days in November
O'Fallon, IL

Average sunshine days in November - O
  • Average sunshine days in November: 22.5 days

The month with the most sunshine days is December (23.6 days).
The months with the least sunshine days are May and July (15.5 days).

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Average UV index in November
O'Fallon, IL

Average UV index in November - O
  • Average UV index in November: 2

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 November
O'Fallon, IL

Average cloud cover in November - O
  • Average cloud cover in November: 38

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 28).

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Average visibility in November
O'Fallon, IL

Average visibility in November - O
  • Average visibility in November: 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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O'Fallon, Illinois, USA

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