Rockbridge, IL Climate


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United States / Illinois / No Metro Area / Greene County / Rockbridge / Zip Codes
Rockbridge, IL is situated in the Midwestern United States and has a humid continental climate with hot summers and cold winters. The warmest months of the year are June, July and August when temperatures can reach an average high of around 82°F (28°C) and an average low of about 60°F (16°C). January is usually the coldest month and temperatures will typically only reach an average high of just below 35°F (2°C) with a low of around 19°F (-7°C). Rainfall is evenly distributed throughout the year, but snowfall can vary from season to season.

Rockbridge, Illinois gets 40 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Rockbridge averages 16 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 198 sunny days per year in Rockbridge. The US average is 205 sunny days.

Rockbridge 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 86 degrees
Winter Low: the January low is 19
Rain: averages 40 inches of rain a year
Snow: averages 16 inches of snow a year

Bestplaces Comfort Index

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

8.2 Summer - 5.4 Winter
September, May and June are the most pleasant months in Rockbridge, while January and December are the least comfortable months.

  ClimateRockbridge, IllinoisUnited States
    Unlock38.1 in.
  15.9 in.  Unlock
    Unlock106.2 days
  198 days  Unlock
  86.4°85.8°
    Unlock21.7°
  7.2  Unlock
    Unlock4.3
  541 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 Rockbridge with an average high temperature of 86.4°, which ranks it as warmer than most places in Illinois. In Rockbridge, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Rockbridge are September, May and June.
In Rockbridge, there are 22.8 days annually when the high temperature is over 90°, which is hotter than most places in Illinois.
January has the coldest nighttime temperatures for Rockbridge with an average of 18.5°. This is warmer than most places in Illinois.
In Rockbridge, there are 114.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Illinois.
In Rockbridge, there are 5.1 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 Rockbridge 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 Rockbridge.
May is the wettest month in Rockbridge with 4.7 inches of rain, and the driest month is January with 2.2 inches. The wettest season is Summer with 29% of yearly precipitation and 18% occurs in Spring, which is the driest season. The annual rainfall of 40.0 inches in Rockbridge means that it is wetter than most places in Illinois.
May is the rainiest month in Rockbridge with 11.2 days of rain, and February is the driest month with only 7.0 rainy days. There are 103.6 rainy days annually in Rockbridge, which is less rainy than most places in Illinois. The rainiest season is Summer when it rains 31% of the time and the driest is Spring with only a 22% chance of a rainy day.
An annual snowfall of 15.9 inches in Rockbridge means that it is less snowy than most places in Illinois. January is the snowiest month in Rockbridge with 4.6 inches of snow, and 5 months of the year have significant snowfall.
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