October weather forecast
Hamilton, IL

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Weather in October

October, the same as September, is another refreshing autumn month in Hamilton, Illinois, with an average temperature ranging between min 46°F (7.8°C) and max 63.3°F (17.4°C).

Temperature

The decrease of average high-temperatures is mild in October, with a decline from a warm 77.5°F (25.3°C) in September to a comfortable 63.3°F (17.4°C). October's nights in Hamilton, Illinois, observe an average temperature of 46°F (7.8°C).

Humidity

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

Rainfall

In Hamilton, during October, the rain falls for 10.1 days and regularly aggregates up to 1.42" (36mm) of precipitation. In Hamilton, during the entire year, the rain falls for 129.9 days and collects up to 20.71" (526mm) of precipitation.

Snowfall

Months with snowfall in Hamilton are January through April, October through December. October is the first month it typically snows in Hamilton. Throughout October, in the average 0.3 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, in Hamilton, Illinois, there are 25.2 snowfall days, and 8.03" (204mm) of snow is accumulated.

Daylight

In October, the average length of the day in Hamilton is 11h and 7min.
On the first day of the month, sunrise is at 7:02 am and sunset at 6:47 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 in Hamilton is 5.7h.

UV index

The average daily maximum UV index in October is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: In October, a daily UV index of 3 turns into the following recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. When the Sun is at its strongest around midday, find shade and limit exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Hamilton in October?

During October, Hamilton experiences an average high-temperature of 63.3°F (17.4°C) and a low-temperature of 46°F (7.8°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, is estimated at 89.6°F (32°C).

What is the least humid month in Hamilton?

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

What is the average humidity in October in Hamilton?

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

How many days does it rain in October in Hamilton?

In Hamilton, during October, the rain falls for 10.1 days and regularly aggregates up to 1.42" (36mm) of precipitation.

When does it start to snow in Hamilton?

October is the first month it typically snows. Throughout October, in the average 0.3 snowfall days, it receives 0.08" (2mm) of snow.

How many hours of daylight does Hamilton have in October?

The average day length in October in Hamilton is 11h and 7min.

When are sunrise and sunset in October in Hamilton?

In October, on the first day of the month, sunrise is at 7:02 am and sunset at 6:47 pm. On the last day of the month, in Hamilton, sunrise is at 7:34 am and sunset at 6:03 pm CDT.

How long on average sun shines in October in Hamilton?

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

How high is the UV index in October in Hamilton?

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

Average temperature in October
Hamilton, IL

Average temperature in October - Hamilton, IL
  • Average high temperature in October: 63.3°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in October: 46°F

The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).

Average pressure in October
Hamilton, IL

Average pressure in October - Hamilton, 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 (29.9"Hg).

Average wind speed in October
Hamilton, IL

Average wind speed in October - Hamilton, IL
  • Average wind speed in October: 9.3mph

The windiest months (with the highest average wind speed) are January and February (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

Average humidity in October
Hamilton, IL

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

The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (70%).

Average rainfall in October
Hamilton, IL

Average rainfall in October - Hamilton, IL
  • Average rainfall in October: 1.42"

The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is January (0.83").

Average rainfall days in October
Hamilton, IL

Average rainfall days in October - Hamilton, IL
  • Average rainfall days in October: 10.1 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (4.5 days).

Average snowfall in October
Hamilton, IL

Average snowfall in October - Hamilton, IL
  • Average snowfall in October: 0.08"

The month with the highest snowfall is January (2.91").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in October
Hamilton, IL

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

The month with the highest number of snowfall days is January (7.9 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
Hamilton, IL

Average daylight in October / Average sunshine in October - Hamilton, 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 18min).

  • 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
Hamilton, IL

Average sunshine days in October - Hamilton, IL
  • Average sunshine days in October: 19.8 days

The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is June (11.5 days).

Average UV index in October
Hamilton, IL

Average UV index in October - Hamilton, 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
Hamilton, IL

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

The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July and August (Cloud cover 28).

Average visibility in October
Hamilton, IL

Average visibility in October - Hamilton, 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).

Hamilton, Illinois, USA

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