Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
October brings a decrease in the average high-temperature, falling from September's pleasant 72.7°F (22.6°C) to a refreshing 59.5°F (15.3°C). Throughout October, Byron witnesses a consistent average low-temperature of 43.7°F (6.5°C).Humidity
April and October, with an average relative humidity of 75%, are the least humid months.Rainfall
In Byron, during October, the rain falls for 7.7 days and regularly aggregates up to 0.67" (17mm) of precipitation. Throughout the year, there are 100.6 rainfall days, and 7.99" (203mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. October is the first month it typically snows. Throughout October, in the average 0.4 snowfall days, it receives 0.2" (5mm) of snow. Throughout the year, there are 29.5 snowfall days, and 3.66" (93mm) of snow is accumulated.Daylight
In October, the average length of the day is 11h and 4min.On the first day of October, sunrise is at 6:54 am and sunset at 6:38 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:51 pm CDT.
Sunshine
The average sunshine in October is 5.3h.UV index
In October, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In October, the maximum UV index of 2 suggests these recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average October temperature?
What are the least humid months?
What is the average humidity in October?
How many days does it rain in October?
When does it start to snow?
What is the average length of the day in October?
When is the sunrise / sunset in October?
How long on average sun shines in October?
How high is the UV index in October?
Average temperature in October
Byron, IL
- Average high temperature in October: 59.5°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in October: 43.7°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (14°F).
Average pressure in October
Byron, IL
- Average pressure in October: 30"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in October
Byron, IL
- Average wind speed in October: 8.9mph
The windiest month (with the highest average wind speed) is April (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in October
Byron, IL
- Average humidity in October: 75%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and October (75%).
Average rainfall in October
Byron, IL
- Average rainfall in October: 0.67"
The wettest month (with the highest rainfall) is May (1.18").
The driest months (with the least rainfall) are January and February (0.35").
Average rainfall days in October
Byron, IL
- Average rainfall days in October: 7.7 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is January (3.2 days).
Average snowfall in October
Byron, IL
- Average snowfall in October: 0.2"
The month with the highest snowfall is January (1.42").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in October
Byron, IL
- Average snowfall days in October: 0.4 days
The month with the highest number of snowfall days is January (8.1 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
Byron, IL
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in October: 5h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in October
Byron, IL
- Average sunshine days in October: 21.7 days
The month with the most sunshine days is December (22.6 days).
The month with the least sunshine days is June (12.8 days).
Average UV index in October
Byron, IL
- Average UV index in October: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in October
Byron, IL
- Average cloud cover in October: 42
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is September (Cloud cover 33).
Average visibility in October
Byron, IL
- Average visibility in October: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Byron, Illinois, USA
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