Mason City, IL Weather


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United States / Illinois / No Metro Area / Mason County / Mason City / Zip Codes

The most pleasant months of the year for Mason City are September, May and June. In Mason City, there are 5 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Mason City with an average high temperature of 84.9°, which ranks it as about average compared to other places in Illinois. January is the snowiest month in Mason City with 5.0 inches of snow, and 4 months of the year have significant snowfall. July is the most humid month, though humidity is low for most of the year.

Today's Weather - Mason City, IL

1 PM PST

Chance Showers And Thunderstorms

74°F

7 DAY FORECASTDESCRIPTIONHIGH/LOWWIND
This AfternoonChance Showers And Thunderstorms75° / 61°S 20 to 26 mph
MondaySlight Chance Rain Showers then Mostly Cloudy72° / 51°SW 10 to 15 mph
TuesdaySunny77° / 60°S 5 to 10 mph
WednesdayChance Showers And Thunderstorms then Mostly Sunny81° / 64°SSW 9 to 13 mph
ThursdayShowers And Thunderstorms Likely83° / 60°S 15 to 18 mph
FridayShowers And Thunderstorms Likely72° / 49°SW 13 to 16 mph
SaturdaySlight Chance Rain Showers69° / 51°SW 12 to 17 mph

Weather Highlights

Summer High: the July high is around 85 degrees
Winter Low: the January low is 17
Rain: averages 38 inches of rain a year
Snow: averages 15 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for the Mason City area is 8.5 (10=best), which means it is more comfortable than most places in Illinois.

8.5 / 10

A higher score indicates a more comfortable year-round climate. The US average for the comfort index is 7.8. Our index is based on the total number of days annually within the comfort range of 70-80 degrees, and we also applied a penalty for days of excessive humidity.


Average Monthly High and Low (°F)
HighLow
January34° 17°
February39° 21°
March51° 30°
April64° 41°
May74° 52°
June83° 61°
July85° 65°
August84° 62°
September78° 54°
October66° 42°
November52° 32°
December37° 21°
Hot, Freezing, Rainy, Snowy Days: Mason City
Hot
Days
Freezing
Days
Rainy
Days
Snowy
Days
January02874
February02473
March01891
April05100
May10110
June4090
July6080
August5080
September2070
October0580
November01580
December02683

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.

Reviews for Mason City
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Over 4 years ago

Very cute commuter town, everyone is super friendly. Safe place to bring children up, short commute to Lincoln, and interstate 55. After living in the rat race in a  More

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Over 16 years ago

Mason City, IL is a quaint, beautiful town. The folks that live there are very proud of the town's history. Local residents are working together to keep the city's  More

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