Zip 61275 (Port Byron, IL) Climate

61275 Port Byron, IL has a humid continental climate, with hot summers and cold winters. The average temperature throughout the year is around 51°F (10.5°C). In the summer months, temperatures can reach highs of over 90°F (32°C), while winter lows can dip below zero. Precipitation is fairly consistent throughout the year, with an average of 37 inches (93cm) of rain and snowfall annually. While thunderstorms are common in the summer months, severe weather events such as tornadoes are rare.

Port Byron (zip 61275), Illinois gets 37 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Port Byron (zip 61275) averages 29 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 201 sunny days per year in Port Byron (zip 61275). The US average is 205 sunny days.

Port Byron (zip 61275) gets some kind of precipitation, on average, 109 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 85 degrees
Winter Low: the January low is 15
Rain: averages 37 inches of rain a year
Snow: averages 29 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 61275 zip code is 7.0 (10=best), which means it is about average compared to other places in Illinois.

8.7 Summer - 4.6 Winter

September, June and May are the most pleasant months in the 61275 zip code, while January and December are the least comfortable months.

Climate	Port Byron, Illinois	United States
	Unlock	38.1 in.
	29.0 in.	Unlock
	Unlock	106.2 days
	201 days	Unlock
	85.4°	85.8°
	Unlock	21.7°
	7	Unlock
	Unlock	4.3
	660 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 the 61275 zip code with an average high temperature of 85.4°, which ranks it as about average compared to other places in Illinois. In the 61275 zip code, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 61275 zip code are September, June and May.

In the 61275 zip code, there are 18.1 days annually when the high temperature is over 90°, which is about average compared to other places in Illinois.

January has the coldest nighttime temperatures for the 61275 zip code with an average of 14.6°. This is colder than most places in Illinois.

In the 61275 zip code, there are 124.7 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Illinois.

In the 61275 zip code, there are 10.0 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Illinois.

The humidity is usually comfortable in the 61275 zip code 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 the 61275 zip code with 4.4 inches of rain, and the driest month is January with 1.4 inches. The wettest season is Autumn with 35% of yearly precipitation and 14% occurs in Spring, which is the driest season. The annual rainfall of 37.2 inches in the 61275 zip code means that it is drier than most places in Illinois.

May is the rainiest month in the 61275 zip code with 11.0 days of rain, and February is the driest month with only 7.4 rainy days. There are 109.0 rainy days annually in the 61275 zip code, which is about average compared to other 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 29.0 inches in the 61275 zip code means that it is snowier than most places in Illinois. December is the snowiest month in the 61275 zip code with 8.9 inches of snow, and 6 months of the year have significant snowfall.

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