Gallatin County, IL Climate

Gallatin County has a humid continental climate, with warm summers and cold winters. Summers typically reach temperatures in the 80s Fahrenheit (27-29°C), while winter temperatures can dip below freezing. Precipitation is plentiful throughout the year, with average yearly precipitation of 39 inches (99 cm). The area experiences all four seasons, including a mild fall and spring season. Winters are mostly dry due to Lake Michigan's influence on the local climate. Snowfall can range from moderate to heavy depending on the year, but usually does not persist for long periods of time due to the lake effect.

Gallatin County, Illinois gets 47 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Gallatin County averages 8 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 201 sunny days per year in Gallatin County. The US average is 205 sunny days.

Gallatin County gets some kind of precipitation, on average, 104 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 88 degrees
Winter Low: the January low is 24
Rain: averages 47 inches of rain a year
Snow: averages 8 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Gallatin County is 7.3 (10=best), which means it is one of the most pleasant places in Illinois.

7.5 Summer - 5.8 Winter

September, May and October are the most pleasant months in Gallatin County, while January and December are the least comfortable months.

Climate	Gallatin, Illinois	United States
	Unlock	38.1 in.
	8.1 in.	Unlock
	Unlock	106.2 days
	201 days	Unlock
	88.3°	85.8°
	Unlock	21.7°
	7.3	Unlock
	Unlock	4.3
	395 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 Gallatin County with an average high temperature of 88.3°, which ranks it as one of the hottest places in Illinois. In Gallatin County, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Gallatin County are May, September and June.

In Gallatin County, there are 35.4 days annually when the high temperature is over 90°, which is one of the hottest places in Illinois.

January has the coldest nighttime temperatures for Gallatin County with an average of 23.8°. This is one of the warmest places in Illinois.

In Gallatin County, there are 90.6 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Illinois.

In Gallatin County, there are 1.2 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Illinois.

The humidity can be uncomfortably heavy or close in Gallatin County during the summer months. July is the most humid month, though humidity is low for most of the year. July, August and June are the three most humid months in Gallatin County.

May is the wettest month in Gallatin County with 5.3 inches of rain, and the driest month is August with 3.0 inches. The wettest season is Summer with 30% of yearly precipitation and 23% occurs in Winter, which is the driest season. The annual rainfall of 46.8 inches in Gallatin County means that it is one of the wettest places in Illinois.

May is the rainiest month in Gallatin County with 10.6 days of rain, and August is the driest month with only 6.4 rainy days. There are 104.2 rainy days annually in Gallatin County, which is less rainy than most places in Illinois. The rainiest season is Summer when it rains 30% of the time and the driest is Winter with only a 22% chance of a rainy day.

An annual snowfall of 8.1 inches in Gallatin County means that it is one of the least snowy places in Illinois. February is the snowiest month in Gallatin County with 2.6 inches of snow, and 4 months of the year have significant snowfall.

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