Naples, IL Climate


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United States / Illinois / Jacksonville Metro Area / Scott County / Naples / Zip Codes
Naples, IL has a continental climate with cold, snowy winters and hot, humid summers. The average temperature in the winter is around 25°F (-4°C), while in the summer it can reach up to 82°F (28°C). Precipitation is moderate throughout the year, with average snowfall ranging from 24 inches (60cm) in January to 1.7 inches (4cm) in June. On average, there are 207 sunny days per year in Naples, IL with July typically being the sunniest month of the year.

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

Naples averages 17 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 195 sunny days per year in Naples. The US average is 205 sunny days.

Naples gets some kind of precipitation, on average, 99 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 87 degrees
Winter Low: the January low is 18
Rain: averages 38 inches of rain a year
Snow: averages 17 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Naples is 7.2 (10=best), which means it is one of the most pleasant places in Illinois.

8.3 Summer - 5.3 Winter
September, June and May are the most pleasant months in Naples, while January and December are the least comfortable months.

  ClimateNaples, IllinoisUnited States
    Unlock38.1 in.
  16.5 in.  Unlock
    Unlock106.2 days
  195 days  Unlock
  86.5°85.8°
    Unlock21.7°
  7.2  Unlock
    Unlock4.3
  440 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 Naples with an average high temperature of 86.5°, which ranks it as warmer than most places in Illinois. In Naples, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Naples are September, May and June.
In Naples, there are 25.0 days annually when the high temperature is over 90°, which is hotter than most places in Illinois.
January has the coldest nighttime temperatures for Naples with an average of 17.5°. This is about average compared to other places in Illinois.
In Naples, there are 121.7 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Illinois.
In Naples, there are 5.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Illinois.
The humidity can be uncomfortably heavy or close in Naples 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 Naples.
May is the wettest month in Naples with 4.4 inches of rain, and the driest month is February with 1.8 inches. The wettest season is Autumn with 31% of yearly precipitation and 16% occurs in Spring, which is the driest season. The annual rainfall of 38.2 inches in Naples means that it is drier than most places in Illinois.
May is the rainiest month in Naples with 10.6 days of rain, and February is the driest month with only 6.4 rainy days. There are 99.3 rainy days annually in Naples, which is less rainy than most places in Illinois. The rainiest season is Summer when it rains 29% of the time and the driest is Spring with only a 22% chance of a rainy day.
An annual snowfall of 16.5 inches in Naples means that it is less snowy than most places in Illinois. December is the snowiest month in Naples with 4.8 inches of snow, and 4 months of the year have significant snowfall.
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