2025 Compare Climate & Weather:
Marengo, IL vs Jacksonville, IL

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Highlights

On average, there are 197 sunny days per year in Jacksonville. Marengo averages 191 sunny days per year. The US average is 205 sunny days.

Jacksonville, Illinois gets 39.9 inches of rain, on average, per year. Marengo, Illinois gets 36.5 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Jacksonville averages 18 inches of snow per year. Marengo averages 33.8 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Jacksonville, Illinois
Summer High: the July high is around 87.2 degrees
Winter Low: the January low is 17.7
Rain: averages 39.9 inches of rain a year
Snow: averages 18 inches of snow a year

Marengo, Illinois
Summer High: the July high is around 83.1 degrees
Winter Low: the January low is 12.3
Rain: averages 36.5 inches of rain a year
Snow: averages 33.8 inches of snow a year

BestPlaces Comfort Index
Jacksonville

The annual BestPlaces Comfort Index for Jacksonville is 7.1 (10=best), which means it is more comfortable than most places in Illinois.

7.1 / 10
September, June and May are the most pleasant months in Jacksonville, while January and December are the least comfortable months.

Marengo

The annual BestPlaces Comfort Index for Marengo is 6.8 (10=best), which means it is less comfortable than most places in Illinois.

6.8 / 10
June, September and August are the most pleasant months in Marengo, while January and December are the least comfortable months.

Today's Weather - Marengo, IL

4 AM PST

Sunny

51°F

DAYDESCRIPTIONHIGH / LOWWIND
TodaySunny72° / 39°N 5 to 15 mph
SundaySunny74° / 50°E 5 to 10 mph
MondayMostly Sunny79° / 58°SE 5 to 10 mph
TuesdayIsolated Showers And Thunderstorms78° / 58°SE 5 to 10 mph
WednesdayMostly Sunny then Isolated Showers And Thunderstorms82° / 62°SE 5 to 10 mph
ThursdayMostly Sunny then Scattered Showers And Thunderstorms87° / 62°SSE 10 to 20 mph
FridaySunny then Slight Chance Rain Showers81° / 54°WSW 10 to 20 mph
Today's Weather - Jacksonville, IL

4 AM PST

Sunny

41°F

DAYDESCRIPTIONHIGH / LOWWIND
TodaySunny80° / 47°NNE 1 to 6 mph
SundaySunny79° / 58°ENE 9 mph
MondayShowers And Thunderstorms Likely76° / 61°E 8 mph
TuesdayChance Rain Showers79° / 61°SSE 6 mph
WednesdaySunny85° / 67°SSE 6 to 13 mph
ThursdayMostly Sunny then Slight Chance Showers And Thunderstorms90° / 66°S 10 to 15 mph
FridaySunny then Slight Chance Rain Showers84° / 59°WSW 9 to 14 mph
Average Monthly High / Low (°F)
MonthMarengo, ILJacksonville, IL
January29° / 12°36° / 18°
February34° / 16°41° / 21°
March45° / 26°52° / 30°
April58° / 37°65° / 41°
May70° / 47°75° / 51°
June80° / 57°83° / 61°
July83° / 62°87° / 65°
August82° / 60°86° / 63°
September75° / 51°80° / 53°
October62° / 39°67° / 42°
November47° / 30°53° / 32°
December33° / 17°39° / 21°
Hot, Freezing, Rainy, Snowy Days: Marengo / Jacksonville
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 030 / 279 / 76 / 3
February0 / 026 / 247 / 74 / 2
March0 / 023 / 199 / 103 / 1
April0 / 09 / 511 / 121 / 0
May0 / 11 / 012 / 120 / 0
June3 / 40 / 011 / 100 / 0
July4 / 90 / 09 / 90 / 0
August3 / 80 / 09 / 80 / 0
September1 / 20 / 08 / 80 / 0
October0 / 07 / 49 / 90 / 0
November0 / 018 / 159 / 91 / 0
December0 / 028 / 2710 / 85 / 3
July is the hottest month for Marengo with an average high temperature of 83.1°, which ranks it as one of the coolest places in Illinois. In Marengo, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Marengo are June, September and August.

July is the hottest month for Jacksonville with an average high temperature of 87.2°, which ranks it as warmer than most places in Illinois. In Jacksonville, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Jacksonville are September, May and June.
January has the coldest nighttime temperatures for Marengo with an average of 12.3°. This is one of the coldest places in Illinois.

January has the coldest nighttime temperatures for Jacksonville with an average of 17.7°. This is about average compared to other places in Illinois.

In Marengo, there are 11.1 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.

In Jacksonville, there are 24.9 days annually when the high temperature is over 90°, which is hotter than most places in Illinois.

In Marengo, there are 140.8 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Illinois.

In Jacksonville, there are 121.9 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Illinois.

In Marengo, there are 13.0 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Illinois.

In Jacksonville, there are 4.8 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Illinois.

August is the wettest month in Marengo with 4.8 inches of rain, and the driest month is January with 1.4 inches. The wettest season is Autumn with 36% of yearly precipitation and 13% occurs in Spring, which is the driest season. The annual rainfall of 36.5 inches in Marengo means that it is one of the driest places in Illinois.


May is the wettest month in Jacksonville with 4.6 inches of rain, and the driest month is January with 1.8 inches. The wettest season is Autumn with 30% of yearly precipitation and 16% occurs in Spring, which is the driest season. The annual rainfall of 39.9 inches in Jacksonville means that it is wetter than most places in Illinois.

May is the rainiest month in Marengo with 11.5 days of rain, and February is the driest month with only 7.3 rainy days. There are 111.8 rainy days annually in Marengo, which is rainier than most places in Illinois. The rainiest season is Summer when it rains 28% of the time and the driest is Spring with only a 23% chance of a rainy day.

May is the rainiest month in Jacksonville with 11.7 days of rain, and February is the driest month with only 6.6 rainy days. There are 107.7 rainy days annually in Jacksonville, which is about average compared to other places in Illinois. The rainiest season is Summer when it rains 31% of the time and the driest is Spring with only a 20% chance of a rainy day.

An annual snowfall of 33.8 inches in Marengo means that it is snowier than most places in Illinois.

An annual snowfall of 18.0 inches in Jacksonville means that it is about average compared to other places in Illinois.
December is the snowiest month in Marengo with 9.7 inches of snow, and 6 months of the year have significant snowfall.

January is the snowiest month in Jacksonville with 5.5 inches of snow, and 4 months of the year have significant snowfall.

DID YOU KNOW?

Many people confuse Weather and Climate, but they are different. Weather refers to the conditions of the atmosphere over a short period of time, while Climate refers to the conditions of the atmosphere over a long period of time.

Weather, more specifically, refers to how the atmosphere behaves and its effects on life and human activities. Most people think of Weather in terms of what can be observed: temperature, humidity, precipitation, and cloudy/sunny conditions. Weather conditions constantly change on a minute-to-minute basis.

Climate is a record of the average weather conditions for a given place over a long period of time, often referred to as Climate Normals. A 30-year period of record is a common requirement to be considered a Climate Normal.

Reviews for Marengo    2 Reviews
Jill · Sherman Oaks, CA
re:
Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't  More

   |    Reply
NC For Me · Apex, NC
re:
Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but  More

   |    Reply

Start Your Review of Marengo

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Reviews for Jacksonville    2 Reviews
Jill · Sherman Oaks, CA
re:
Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't  More

   |    Reply
NC For Me · Apex, NC
re:
Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but  More

   |    Reply

Start Your Review of Jacksonville

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Zips In Marengo, Illinois
60152
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