Forreston, Illinois 

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Climate in Forreston, Illinois

Forreston, Illinois gets 38 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Forreston averages 31 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 190 sunny days per year in Forreston. The US average is 205 sunny days.

Forreston 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 84 degrees
Winter Low: the January low is 12
Rain: averages 38 inches of rain a year
Snow: averages 31 inches of snow a year


BESTPLACES COMFORT INDEX

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

8.9 / 4.4

Summer   /   Winter
June, September and August are the most pleasant months in Forreston, while January and December are the least comfortable months.

Climate Averages
  Forreston, IllinoisUnited States
  37.9 in.38.1 in.
  31.1 in.27.8 in.
  114.4 days106.2 days
  190 days205 days
  83.7°85.8°
  12.0°21.7°
  6.97
  3.64.3
  938 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 Forreston with an average high temperature of 83.7°, which ranks it as cooler than most places in Illinois. In Forreston, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Forreston are September, June and August.


January has the coldest nighttime temperatures for Forreston with an average of 12.0°. This is one of the coldest places in Illinois.


In Forreston, there are 12.1 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.


In Forreston, there are 142.4 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Illinois.


In Forreston, there are 14.0 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Illinois.


June is the wettest month in Forreston with 4.8 inches of rain, and the driest month is January with 1.5 inches. The wettest season is Autumn with 36% of yearly precipitation and 14% occurs in Spring, which is the driest season. The annual rainfall of 37.9 inches in Forreston means that it is drier than most places in Illinois.


May is the rainiest month in Forreston with 12.3 days of rain, and February is the driest month with only 7.5 rainy days. There are 114.4 rainy days annually in Forreston, 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 22% chance of a rainy day.


An annual snowfall of 31.1 inches in Forreston means that it is snowier than most places in Illinois. January is the snowiest month in Forreston with 9.8 inches of snow, and 6 months of the year have significant snowfall.





  • Annual Rainfall (US Avg: 36.5")
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