October weather forecast
Mendon, IL

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Weather in October

October, like September, in Mendon, Illinois, is another comfortable autumn month, with an average temperature ranging between max 63.5°F (17.5°C) and min 46.8°F (8.2°C).

Temperature

October comes with a decrease in the average high-temperature, falling from a warm 77.5°F (25.3°C) in September to an enjoyable 63.5°F (17.5°C). Mendon records a consistent low-temperature of 46.8°F (8.2°C) during October nights.

Humidity

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

Rainfall

In Mendon, in October, during 10.3 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. In Mendon, during the entire year, the rain falls for 134.2 days and collects up to 23.15" (588mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 0.3 snowfall days, it receives 0.2" (5mm) of snow. In Mendon, Illinois, during the entire year, snow falls for 27.6 days and aggregates up to 7.95" (202mm) of snow.

Daylight

In Mendon, the average length of the day in October is 11h and 8min.
On the first day of the month, sunrise is at 7:02 am and sunset at 6:46 pm. On the last day of October, sunrise is at 7:34 am and sunset at 6:03 pm CDT.

Sunshine

The average sunshine in October is 5.7h.

UV index

The average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index, 3 in October, converts into the following recommendations:
Exercise prevention - Warding off sunburn is urged. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Updated: Jun 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in October?

In Mendon, in October, the average high-temperature is 63.5°F (17.5°C), and the average low-temperature is 46.8°F (8.2°C). The average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, in August is evaluated at 91.4°F (33°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?

The average relative humidity in October is 71%.

How much does it rain in October?

In Mendon, in October, it is raining for 10.3 days, with typically 1.85" (47mm) of accumulated precipitation.

When does it start snowing?

October is the first month it typically snows. Throughout October, in the average 0.3 snowfall days, it receives 0.2" (5mm) of snow.

What is the average length of the day in October?

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

When is the sunrise / sunset in October?

In October, on the first day of the month, sunrise is at 7:02 am and sunset at 6:46 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 6:03 pm CDT.

How long on average sun shines in October?

In October, the average sunshine duration is 5.7h.

What is the UV index reading in October?

The average daily maximum UV index in October is 3. A UV Index value of 3 to 5 symbolizes a medium health risk 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 October
Mendon, IL

Average temperature in October - Mendon, IL
  • Average high temperature in October: 63.5°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (32.7°F).

  • Average low temperature in October: 46.8°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).

Average pressure in October
Mendon, IL

Average pressure in October - Mendon, 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).

Average wind speed in October
Mendon, IL

Average wind speed in October - Mendon, IL
  • Average wind speed in October: 9mph

The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).

Average humidity in October
Mendon, IL

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

The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is October (71%).

Average rainfall in October
Mendon, IL

Average rainfall in October - Mendon, IL
  • Average rainfall in October: 1.85"

The wettest month (with the highest rainfall) is May (3.35").
The driest months (with the least rainfall) are January and December (1.02").

Average rainfall days in October
Mendon, IL

Average rainfall days in October - Mendon, IL
  • Average rainfall days in October: 10.3 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (5 days).

Average snowfall in October
Mendon, IL

Average snowfall in October - Mendon, IL
  • Average snowfall in October: 0.2"

The month with the highest snowfall is January (2.76").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in October
Mendon, IL

Average snowfall days in October - Mendon, IL
  • Average snowfall days in October: 0.3 days

The month with the highest number of snowfall days is January (8.8 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
Mendon, IL

Average daylight in October / Average sunshine in October - Mendon, 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: 5h and 4min

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

Average sunshine days in October
Mendon, IL

Average sunshine days in October - Mendon, IL
  • Average sunshine days in October: 18.7 days

The month with the most sunshine days is December (19.6 days).
The month with the least sunshine days is June (11.1 days).

Average UV index in October
Mendon, IL

Average UV index in October - Mendon, 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).

Average cloud cover in October
Mendon, IL

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

The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in October
Mendon, IL

Average visibility in October - Mendon, 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).

Mendon, Illinois, USA

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