October weather forecast
Fairfield, IL

Share

Weather in October

October, like September, in Fairfield, Illinois, is another refreshing autumn month, with temperature in the range of an average low of 49.6°F (9.8°C) and an average high of 66.7°F (19.3°C).

Temperature

A shift in Fairfield's weather is observed as September turns into October, with the average high temperature reducing from a warm 79°F (26.1°C) to a comfortable 66.7°F (19.3°C). Fairfield reports an average nighttime low-temperature of 49.6°F (9.8°C) in October.

Humidity

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

Rainfall

In Fairfield, during October, the rain falls for 11.1 days and regularly aggregates up to 2.8" (71mm) of precipitation. In Fairfield, during the entire year, the rain falls for 166.4 days and collects up to 37.32" (948mm) of precipitation.

Snowfall

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

Daylight

In Fairfield, the average length of the day in October is 11h and 11min.
On the first day of the month, sunrise is at 6:49 am and sunset at 6:35 pm. On the last day of October, sunrise is at 7:19 am and sunset at 5:54 pm CDT.

Sunshine

In Fairfield, the average sunshine in October is 6.6h.

UV index

In Fairfield, the average daily maximum UV index in October is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 3 in October translates into these instructions:
Take precautions - Protection against sunburn is recommended. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
[Resources]

Frequently asked questions

What is the usual temperature for Fairfield in October?

The high-temperature, in October, in Fairfield, is 66.7°F (19.3°C), while the low-temperature averages to 49.6°F (9.8°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is appraised at 93.2°F (34°C).

What is the least humid month in Fairfield?

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

What is the average humidity in October in Fairfield?

In October, the average relative humidity in Fairfield is 70%.

How many days does it rain in October in Fairfield?

In Fairfield, during October, the rain falls for 11.1 days and regularly aggregates up to 2.8" (71mm) of precipitation.

When it does not snow in Fairfield?

May through October are months without snowfall in Fairfield, Illinois.

Does it snow in Fairfield in October?

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

How many hours of daylight does Fairfield have in October?

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

When are sunrise and sunset in October in Fairfield?

In October, on the first day of the month, sunrise is at 6:49 am and sunset at 6:35 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 5:54 pm CDT.

How many hours of sunshine does Fairfield have in October?

The average sunshine duration in October in Fairfield, Illinois, is 6.6h.

How high is the UV index in October in Fairfield?

In October, the average daily maximum UV index in Fairfield is 3. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Fairfield, IL

Average temperature in October - Fairfield, IL
  • Average high temperature in October: 66.7°F

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in October: 49.6°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 (25°F).

[Resources]

Average pressure in October
Fairfield, IL

Average pressure in October - Fairfield, IL
  • Average pressure in October: 30.04"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

[Resources]

Average wind speed in October
Fairfield, IL

Average wind speed in October - Fairfield, IL
  • Average wind speed in October: 8.4mph

The windiest months (with the highest average wind speed) are February and March (9.9mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).

[Resources]

Average humidity in October
Fairfield, IL

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

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

[Resources]

Average rainfall in October
Fairfield, IL

Average rainfall in October - Fairfield, IL
  • Average rainfall in October: 2.8"

The wettest month (with the highest rainfall) is April (4.96").
The driest month (with the least rainfall) is September (2.05").

[Resources]

Average rainfall days in October
Fairfield, IL

Average rainfall days in October - Fairfield, IL
  • Average rainfall days in October: 11.1 days

The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is January (8.7 days).

[Resources]

Average snowfall in October
Fairfield, IL

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

The months with the highest snowfall are January and February (2.01").
The months with the least snowfall are May, June, July, August, September and October (0").

[Resources]

Average snowfall days in October
Fairfield, IL

Average snowfall days in October - Fairfield, IL
  • Average snowfall days in October: 0.2 days

The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

[Resources]

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

Average daylight in October / Average sunshine in October - Fairfield, 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 4min

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

[Resources]

Average sunshine days in October
Fairfield, IL

Average sunshine days in October - Fairfield, IL
  • Average sunshine days in October: 17.9 days

The month with the most sunshine days is October (17.9 days).
The month with the least sunshine days is May (9 days).

[Resources]

Average UV index in October
Fairfield, IL

Average UV index in October - Fairfield, 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).

[Resources]

Average cloud cover in October
Fairfield, IL

Average cloud cover in October - Fairfield, IL
  • Average cloud cover in October: 33

The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are June and August (Cloud cover 28).

[Resources]

Average visibility in October
Fairfield, IL

Average visibility in October - Fairfield, 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).

[Resources]

Fairfield, Illinois, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location