October weather forecast
Johnston City, IL

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Weather in October

October, like September, in Johnston City, Illinois, is another refreshing autumn month, with an average temperature varying between 67.3°F (19.6°C) and 49.6°F (9.8°C).

Temperature

Setting in of October comes with a decrease in the average high-temperature, moving from a moderately hot 80.1°F (26.7°C) in September to an enjoyable 67.3°F (19.6°C). Throughout October, an average low-temperature of 49.6°F (9.8°C) is expected.

Humidity

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

Rainfall

In Johnston City, Illinois, in October, it is raining for 11.5 days, with typically 2.87" (73mm) of accumulated precipitation. Throughout the year, in Johnston City, there are 167.2 rainfall days, and 37.68" (957mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall in Johnston City. October is the first month it typically snows. Throughout October, in the average 0.2 snowfall days, it receives 0.12" (3mm) of snow. In Johnston City, during the entire year, snow falls for 19.8 days and aggregates up to 6.57" (167mm) of snow.

Daylight

The average length of the day in October in Johnston City is 11h and 12min.
On the first day of the month, sunrise is at 6:51 am and sunset at 6:38 pm. On the last day of October, in Johnston City, sunrise is at 7:20 am and sunset at 5:57 pm CDT.

Sunshine

In October, the average sunshine is 6.5h.

UV index

In October, the average daily maximum UV index in Johnston City is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: A typical high UV index of 3 in October suggests the following recommendations:
Guard yourself - Avoiding sunburn is suggested. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average October temperature in Johnston City?

The average high-temperature, in October, in Johnston City, is 67.3°F (19.6°C), while the average low-temperature is 49.6°F (9.8°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in August is calculated to be 96.8°F (36°C).

What is the least humid month in Johnston City?

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

What is the average humidity in October in Johnston City?

The average relative humidity in October in Johnston City, Illinois, is 70%.

How many days does it rain in October in Johnston City?

In Johnston City, during October, the rain falls for 11.5 days and regularly aggregates up to 2.87" (73mm) of precipitation.

When does it start snowing in Johnston City?

October is the first month it typically snows in Johnston City, Illinois. Throughout October, in the average 0.2 snowfall days, it receives 0.12" (3mm) of snow.

What is the average length of the day in October in Johnston City?

The average day length in October is 11h and 12min.

When are sunrise and sunset in October in Johnston City?

On the first day of October, sunrise is at 6:51 am and sunset at 6:38 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 5:57 pm CDT.

How many hours of sunshine does Johnston City have in October?

In Johnston City, Illinois, the average sunshine duration in October is 6.5h.

What is the UV index intensity in October in Johnston City?

The average daily maximum UV index in October in Johnston City is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to the Sun's 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
Johnston City, IL

Average temperature in October - Johnston City, IL
  • Average high temperature in October: 67.3°F

The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39°F).

  • Average low temperature in October: 49.6°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

Average pressure in October
Johnston City, IL

Average pressure in October - Johnston City, 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).

Average wind speed in October
Johnston City, IL

Average wind speed in October - Johnston City, IL
  • Average wind speed in October: 8.2mph

The windiest months (with the highest average wind speed) are January and February (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

Average humidity in October
Johnston City, IL

Average humidity in October - Johnston City, IL
  • Average humidity in October: 70%

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

Average rainfall in October
Johnston City, IL

Average rainfall in October - Johnston City, IL
  • Average rainfall in October: 2.87"

The wettest month (with the highest rainfall) is April (4.92").
The driest month (with the least rainfall) is September (1.97").

Average rainfall days in October
Johnston City, IL

Average rainfall days in October - Johnston City, IL
  • Average rainfall days in October: 11.5 days

The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is January (9.7 days).

Average snowfall in October
Johnston City, IL

Average snowfall in October - Johnston City, IL
  • Average snowfall in October: 0.12"

The month with the highest snowfall is February (1.93").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in October
Johnston City, IL

Average snowfall days in October - Johnston City, IL
  • Average snowfall days in October: 0.2 days

The month with the highest number of snowfall days is January (6.1 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
Johnston City, IL

Average daylight in October / Average sunshine in October - Johnston City, IL
  • Average daylight in October: 11h and 1min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in October: 6h and 3min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

Average sunshine days in October
Johnston City, IL

Average sunshine days in October - Johnston City, IL
  • Average sunshine days in October: 17.6 days

The month with the most sunshine days is October (17.6 days).
The month with the least sunshine days is June (9.9 days).

Average UV index in October
Johnston City, IL

Average UV index in October - Johnston City, 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 and December (UV index 2).

Average cloud cover in October
Johnston City, IL

Average cloud cover in October - Johnston City, IL
  • Average cloud cover in October: 33

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 28).

Average visibility in October
Johnston City, IL

Average visibility in October - Johnston City, 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).

Johnston City, Illinois, USA

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