Grant Park, IL Climate

Grant Park, IL has a humid continental climate. Summers are generally hot and humid, with temperatures ranging from the upper 70s to the low 90s. Winters bring cold temperatures with an average of around freezing. Precipitation is abundant throughout the year, but heaviest in spring and summer months. Snowfall can also occur in higher amounts during winter months. Overall, Grant Park experiences pleasant weather with mild summers and cold winters that make it an ideal place to visit or live in all seasons.

Grant Park, Illinois gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Grant Park averages 26 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 185 sunny days per year in Grant Park. The US average is 205 sunny days.

Grant Park gets some kind of precipitation, on average, 110 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 84 degrees
Winter Low: the January low is 16
Rain: averages 39 inches of rain a year
Snow: averages 26 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Grant Park is 7.0 (10=best), which means it is about average compared to other places in Illinois.

8.9 Summer - 4.7 Winter

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

Climate	Grant Park, Illinois	United States
	39.2 in.	38.1 in.
	25.5 in.	27.8 in.
	109.5 days	106.2 days
	185 days	205 days
	84.1°	85.8°
	15.5°	21.7°
	7	7
	3.5	4.3
	699 ft.	2443 ft.

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 Grant Park with an average high temperature of 84.1°, which ranks it as cooler than most places in Illinois. In Grant Park, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Grant Park are September, June and August.

In Grant Park, there are 14.6 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.

January has the coldest nighttime temperatures for Grant Park with an average of 15.5°. This is colder than most places in Illinois.

In Grant Park, there are 126.2 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Illinois.

In Grant Park, there are 8.8 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Illinois.

The humidity is usually comfortable in Grant Park 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 Grant Park with 4.4 inches of rain, and the driest month is February with 1.7 inches. The wettest season is Autumn with 32% of yearly precipitation and 15% occurs in Spring, which is the driest season. The annual rainfall of 39.2 inches in Grant Park means that it is about average compared to other places in Illinois.

April is the rainiest month in Grant Park with 10.8 days of rain, and February is the driest month with only 7.4 rainy days. There are 109.5 rainy days annually in Grant Park, 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 25.5 inches in Grant Park means that it is snowier than most places in Illinois. January is the snowiest month in Grant Park with 8.0 inches of snow, and 6 months of the year have significant snowfall.