Stillman Valley, IL Climate

Stillman Valley, IL has a temperate climate with four distinct seasons. Summers are generally warm and humid with highs in the mid-80s and lows in the mid-60s. Winters can be cold and snowy, with temperatures reaching as low as 0°F on occasion. Spring brings mild weather and occasional thunderstorms, while fall is usually cool and bright. The area receives around 33 inches of rain and 24 inches of snow annually, much of which falls during the winter months.

Stillman Valley, Illinois gets 36 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Stillman Valley averages 32 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 188 sunny days per year in Stillman Valley. The US average is 205 sunny days.

Stillman Valley gets some kind of precipitation, on average, 114 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 83 degrees
Winter Low: the January low is 12
Rain: averages 36 inches of rain a year
Snow: averages 32 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Stillman Valley is 6.8 (10=best), which means it is less comfortable than most places in Illinois.

9 Summer - 4.4 Winter

June, September and August are the most pleasant months in Stillman Valley, while January and December are the least comfortable months.

Climate	Stillman Valley, Illinois	United States
	Unlock	38.1 in.
	32.0 in.	Unlock
	Unlock	106.2 days
	188 days	Unlock
	83.4°	85.8°
	Unlock	21.7°
	6.8	Unlock
	Unlock	4.3
	712 ft.	Unlock

Climate

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for Stillman Valley with an average high temperature of 83.4°, which ranks it as cooler than most places in Illinois. In Stillman Valley, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Stillman Valley are June, September and August.

In Stillman Valley, there are 11.6 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.

January has the coldest nighttime temperatures for Stillman Valley with an average of 12.3°. This is one of the coldest places in Illinois.

In Stillman Valley, there are 138.6 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Illinois.

In Stillman Valley, there are 13.7 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Illinois.

The humidity is usually comfortable in Stillman Valley but some summer months can be sticky or muggy. July is the most humid month, though humidity is low for most of the year. The most humid months are July, August and June.

June is the wettest month in Stillman Valley with 4.7 inches of rain, and the driest month is January with 1.4 inches. The wettest season is Autumn with 36% of yearly precipitation and 13% occurs in Spring, which is the driest season. The annual rainfall of 36.3 inches in Stillman Valley means that it is one of the driest places in Illinois.

May is the rainiest month in Stillman Valley with 11.9 days of rain, and February is the driest month with only 7.9 rainy days. There are 114.3 rainy days annually in Stillman Valley, which is rainier than most places in Illinois. The rainiest season is Summer when it rains 28% of the time and the driest is Spring with only a 23% chance of a rainy day.

An annual snowfall of 32.0 inches in Stillman Valley means that it is snowier than most places in Illinois. December is the snowiest month in Stillman Valley with 10.0 inches of snow, and 6 months of the year have significant snowfall.