Cairo, IL Climate


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United States / Illinois / Cape Girardeau Metro Area / Alexander County / Cairo / Zip Codes
Cairo, IL is located in the deep south of the United States and thus experiences a humid subtropical climate. Summers are hot and humid with average temperatures reaching into the high 80s while winters become cool to cold with rainfall becoming more frequent during this time. It is not uncommon to experience thunderstorms that can bring hail or tornadoes in the area. Spring and fall offer milder temperatures and provide an ideal time for outdoor activities.

Cairo, Illinois gets 48 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Cairo averages 7 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 218 sunny days per year in Cairo. The US average is 205 sunny days.

Cairo gets some kind of precipitation, on average, 103 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 89 degrees
Winter Low: the January low is 26
Rain: averages 48 inches of rain a year
Snow: averages 7 inches of snow a year

Bestplaces Comfort Index

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

7 Summer - 5.9 Winter
September, May and October are the most pleasant months in Cairo, while January and December are the least comfortable months.

  ClimateCairo, IllinoisUnited States
  47.7 in.38.1 in.
  6.9 in.27.8 in.
  103.4 days106.2 days
  218 days205 days
  89.2°85.8°
  25.5°21.7°
  7.27
  4.14.3
  312 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 Cairo with an average high temperature of 89.2°, which ranks it as one of the hottest places in Illinois. In Cairo, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Cairo are May, September and October.
In Cairo, there are 41.9 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 Cairo with an average of 25.5°. This is one of the warmest places in Illinois.
In Cairo, there are 81.1 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Illinois.
In Cairo, there are 1.0 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 Cairo 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 Cairo.
May is the wettest month in Cairo with 5.0 inches of rain, and the driest month is August with 2.7 inches. The wettest season is Summer with 29% of yearly precipitation and 23% occurs in Autumn, which is the driest season. The annual rainfall of 47.7 inches in Cairo means that it is one of the wettest places in Illinois.
May is the rainiest month in Cairo with 10.6 days of rain, and August is the driest month with only 6.1 rainy days. There are 103.4 rainy days annually in Cairo, 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 Winter with only a 22% chance of a rainy day.
An annual snowfall of 6.9 inches in Cairo means that it is one of the least snowy places in Illinois. February is the snowiest month in Cairo with 2.6 inches of snow, and 4 months of the year have significant snowfall.
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Jackie  · Florissant, MO
Quality of life
Over 15 years ago

I visited Cairo, IL over this past weekend. The community is very clean an the people were very friendly. However, I did noticed that there very few places of employment  More

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