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's onset brings a reduction in the average high-temperature, from a warm 74.1°F (23.4°C) in September to a refreshing 60.8°F (16°C). An average low-temperature of 45.1°F (7.3°C) marks the nights in Boulder Hill throughout October.Humidity
With an average relative humidity of 74%, October is the least humid month.Rainfall
In Boulder Hill, in October, during 11.2 rainfall days, 1.46" (37mm) of precipitation is typically accumulated. In Boulder Hill, during the entire year, the rain falls for 133.1 days and collects up to 16.93" (430mm) of precipitation.Snowfall
Months with snowfall in Boulder Hill 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 0.16" (4mm) of snow. In Boulder Hill, during the entire year, snow falls for 39.5 days and aggregates up to 6.69" (170mm) of snow.Daylight
In October, the average length of the day in Boulder Hill is 11h and 4min.On the first day of the month, sunrise is at 6:51 am and sunset at 6:34 pm. On the last day of October, in Boulder Hill, Illinois, sunrise is at 7:25 am and sunset at 5:48 pm CDT.
Sunshine
The average sunshine in October is 5.7h.UV index
In October, the average daily maximum UV index in Boulder Hill is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: The UV index of 2 during October translates into the following guidance:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are October temperatures in Boulder Hill?
What is the least humid month in Boulder Hill?
What is the average humidity in October in Boulder Hill?
How many days does it rain in October in Boulder Hill?
When does it start to snow in Boulder Hill?
What is the average length of the day in October in Boulder Hill?
When is the sunrise / sunset in October in Boulder Hill?
How many hours of sunshine does Boulder Hill have in October?
What is the UV index intensity in October in Boulder Hill?
Average temperature in October
Boulder Hill, IL
- Average high temperature in October: 60.8°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in October: 45.1°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in October
Boulder Hill, IL
- Average pressure in October: 30.01"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in October
Boulder Hill, IL
- Average wind speed in October: 8.6mph
The windiest month (with the highest average wind speed) is April (9.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in October
Boulder Hill, IL
- Average humidity in October: 74%
The months with the highest relative humidity are January, February, July and August (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in October
Boulder Hill, IL
- Average rainfall in October: 1.46"
The wettest month (with the highest rainfall) is June (2.24").
The driest months (with the least rainfall) are November and December (0.75").
Average rainfall days in October
Boulder Hill, IL
- Average rainfall days in October: 11.2 days
The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in October
Boulder Hill, IL
- Average snowfall in October: 0.16"
The month with the highest snowfall is January (1.73").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in October
Boulder Hill, IL
- Average snowfall days in October: 0.4 days
The month with the highest number of snowfall days is January (10.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Boulder Hill, 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 4min
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 48min).
Average sunshine days in October
Boulder Hill, IL
- Average sunshine days in October: 17.6 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (10.2 days).
Average UV index in October
Boulder Hill, IL
- Average UV index in October: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in October
Boulder Hill, IL
- Average cloud cover in October: 41
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in October
Boulder Hill, IL
- Average visibility in October: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Boulder Hill, Illinois, USA
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