St. John, IN Climate


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United States / Indiana / Chicago-Naperville-Elgin Metro Area / Lake County / St. John / Zip Codes
St. John, IN has a humid continental climate with cold winters and warm summers. The average temperature in the winter months typically ranges from lows of around 25°F to highs of 35°F while in the summer months the temperatures can range from lows of 60°F to highs of 80°F. Annual precipitation is about 40 inches, mainly concentrated in spring and summer with some snowfall throughout the winter months. The town sees an average of 204 sunny days per year, making it one of the sunniest places in Indiana.

St. John, Indiana gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.

St. John averages 28 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 187 sunny days per year in St. John. The US average is 205 sunny days.

St. John gets some kind of precipitation, on average, 119 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 28 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for St. John is 6.9 (10=best), which means it is less comfortable than most places in Indiana.

9 Summer - 4.6 Winter
June, September and August are the most pleasant months in St. John, while January and December are the least comfortable months.

  ClimateSt. John, IndianaUnited States
  39.0 in.38.1 in.
  28.2 in.27.8 in.
  118.5 days106.2 days
  187 days205 days
  83.7°85.8°
  15.6°21.7°
  6.97
  3.74.3
  725 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 St. John with an average high temperature of 83.7°, which ranks it as cooler than most places in Indiana. In St. John, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for St. John are September, June and August.
In St. John, there are 13.1 days annually when the high temperature is over 90°, which is about average compared to other places in Indiana.
January has the coldest nighttime temperatures for St. John with an average of 15.6°. This is one of the coldest places in Indiana.
In St. John, there are 128.2 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Indiana.
In St. John, there are 8.7 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Indiana.
The humidity is usually comfortable in St. John 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.
August is the wettest month in St. John with 4.6 inches of rain, and the driest month is February with 1.8 inches. The wettest season is Autumn with 33% of yearly precipitation and 17% occurs in Spring, which is the driest season. The annual rainfall of 39.0 inches in St. John means that it is drier than most places in Indiana.
May is the rainiest month in St. John with 11.6 days of rain, and February is the driest month with only 8.4 rainy days. There are 118.5 rainy days annually in St. John, which is about average compared to other places in Indiana. The rainiest season is Summer when it rains 28% of the time and the driest is Autumn with only a 24% chance of a rainy day.
An annual snowfall of 28.2 inches in St. John means that it is snowier than most places in Indiana. January is the snowiest month in St. John with 8.5 inches of snow, and 6 months of the year have significant snowfall.
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Cassady · St. John, IN
The worst place on Earth!!!!!!!
Over 13 years ago

I moved here 2yrs ago from Rockford, IL(which is ranked number 14 most miserable cities in America) and I hate this town more then anywhere I've ever been in my whole  More

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