2025 Compare Climate & Weather:
Decatur, IL vs Mechanicsville, VA

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Highlights

On average, there are 204 sunny days per year in Mechanicsville. Decatur averages 199 sunny days per year. The US average is 205 sunny days.

Mechanicsville, Virginia gets 44.4 inches of rain, on average, per year. Decatur, Illinois gets 39.5 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Mechanicsville averages 12.3 inches of snow per year. Decatur averages 13 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Mechanicsville, Virginia
Summer High: the July high is around 89.6 degrees
Winter Low: the January low is 27.5
Rain: averages 44.4 inches of rain a year
Snow: averages 12.3 inches of snow a year

Decatur, Illinois
Summer High: the July high is around 86.9 degrees
Winter Low: the January low is 18.8
Rain: averages 39.5 inches of rain a year
Snow: averages 13 inches of snow a year

BestPlaces Comfort Index

Mechanicsville

The annual BestPlaces Comfort Index for Mechanicsville is 7.3 (10=best), which means it is about average compared to other places in Virginia.

7.3 / 10

September, May and October are the most pleasant months in Mechanicsville, while January and February are the least comfortable months.

Decatur

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

7.2 / 10

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

Average Monthly High / Low (°F)

Month	Decatur, IL	Mechanicsville, VA
January	35° / 19°	47° / 28°
February	40° / 23°	51° / 30°
March	52° / 32°	60° / 36°
April	65° / 42°	70° / 45°
May	75° / 52°	78° / 54°
June	84° / 62°	86° / 64°
July	87° / 65°	90° / 68°
August	85° / 63°	88° / 67°
September	79° / 55°	81° / 59°
October	67° / 44°	71° / 47°
November	53° / 34°	61° / 38°
December	39° / 23°	50° / 30°

Hot, Freezing, Rainy, Snowy Days: Decatur / Mechanicsville

Month	Hot Days	Freezing Days	Rainy Days	Snowy Days
January	0 / 0	27 / 21	8 / 10	3 / 2
February	0 / 0	23 / 19	7 / 9	2 / 2
March	0 / 0	16 / 11	9 / 10	1 / 1
April	0 / 1	5 / 2	10 / 10	0 / 0
May	1 / 2	0 / 0	12 / 11	0 / 0
June	5 / 9	0 / 0	10 / 10	0 / 0
July	9 / 15	0 / 0	9 / 11	0 / 0
August	7 / 11	0 / 0	7 / 9	0 / 0
September	3 / 4	0 / 0	7 / 8	0 / 0
October	0 / 0	3 / 1	8 / 8	0 / 0
November	0 / 0	14 / 9	9 / 9	0 / 0
December	0 / 0	25 / 20	9 / 10	2 / 1

July is the hottest month for Decatur with an average high temperature of 86.9°, which ranks it as warmer than most places in Illinois. In Decatur, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Decatur are September, May and June.

July is the hottest month for Mechanicsville with an average high temperature of 89.6°, which ranks it as one of the hottest places in Virginia. In Mechanicsville, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Mechanicsville are May, September and October.

January has the coldest nighttime temperatures for Decatur with an average of 18.8°. This is warmer than most places in Illinois.

January has the coldest nighttime temperatures for Mechanicsville with an average of 27.5°. This is warmer than most places in Virginia.

In Decatur, there are 24.8 days annually when the high temperature is over 90°, which is hotter than most places in Illinois.

In Mechanicsville, there are 41.1 days annually when the high temperature is over 90°, which is one of the hottest places in Virginia.

In Decatur, there are 112.5 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Illinois.

In Mechanicsville, there are 82.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Virginia.

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

In Mechanicsville, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Virginia.

June is the wettest month in Decatur with 4.5 inches of rain, and the driest month is January with 1.9 inches. The wettest season is Autumn with 31% of yearly precipitation and 16% occurs in Spring, which is the driest season. The annual rainfall of 39.5 inches in Decatur means that it is about average compared to other places in Illinois.

August is the wettest month in Mechanicsville with 4.7 inches of rain, and the driest month is February with 2.9 inches. The wettest season is Autumn with 29% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 44.4 inches in Mechanicsville means that it is wetter than most places in Virginia.

May is the rainiest month in Decatur with 11.5 days of rain, and September is the driest month with only 6.9 rainy days. There are 104.3 rainy days annually in Decatur, which is less rainy than most places in Illinois. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 23% chance of a rainy day.

July is the rainiest month in Mechanicsville with 10.7 days of rain, and October is the driest month with only 7.5 rainy days. There are 111.6 rainy days annually in Mechanicsville, which is less rainy than most places in Virginia. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 21% chance of a rainy day.

An annual snowfall of 13.0 inches in Decatur means that it is less snowy than most places in Illinois.

An annual snowfall of 12.3 inches in Mechanicsville means that it is less snowy than most places in Virginia.

January is the snowiest month in Decatur with 4.2 inches of snow, and 4 months of the year have significant snowfall.

January is the snowiest month in Mechanicsville with 4.9 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 Decatur 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

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Reviews for Mechanicsville 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

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2025 Compare Climate & Weather:
Decatur, IL vs Mechanicsville, VA

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Decatur / Mechanicsville

January has the coldest nighttime temperatures for Decatur with an average of 18.8°. This is warmer than most places in Illinois.

January has the coldest nighttime temperatures for Mechanicsville with an average of 27.5°. This is warmer than most places in Virginia.

In Decatur, there are 24.8 days annually when the high temperature is over 90°, which is hotter than most places in Illinois.

In Mechanicsville, there are 41.1 days annually when the high temperature is over 90°, which is one of the hottest places in Virginia.

In Decatur, there are 112.5 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Illinois.

In Mechanicsville, there are 82.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Virginia.

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

In Mechanicsville, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Virginia.

An annual snowfall of 13.0 inches in Decatur means that it is less snowy than most places in Illinois.

An annual snowfall of 12.3 inches in Mechanicsville means that it is less snowy than most places in Virginia.

January is the snowiest month in Decatur with 4.2 inches of snow, and 4 months of the year have significant snowfall.

January is the snowiest month in Mechanicsville with 4.9 inches of snow, and 4 months of the year have significant snowfall.

DID YOU KNOW?

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Reviews for Mechanicsville 2 Reviews

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2025 Compare Climate & Weather:Decatur, IL vs Mechanicsville, VA

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Decatur / Mechanicsville

January has the coldest nighttime temperatures for Decatur with an average of 18.8°. This is warmer than most places in Illinois.January has the coldest nighttime temperatures for Mechanicsville with an average of 27.5°. This is warmer than most places in Virginia.

In Decatur, there are 24.8 days annually when the high temperature is over 90°, which is hotter than most places in Illinois.In Mechanicsville, there are 41.1 days annually when the high temperature is over 90°, which is one of the hottest places in Virginia.

In Decatur, there are 112.5 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Illinois.In Mechanicsville, there are 82.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Virginia.

In Decatur, there are 4.8 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Illinois.In Mechanicsville, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Virginia.

An annual snowfall of 13.0 inches in Decatur means that it is less snowy than most places in Illinois.An annual snowfall of 12.3 inches in Mechanicsville means that it is less snowy than most places in Virginia.

January is the snowiest month in Decatur with 4.2 inches of snow, and 4 months of the year have significant snowfall.January is the snowiest month in Mechanicsville with 4.9 inches of snow, and 4 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Decatur 2 Reviews

Reviews for Mechanicsville 2 Reviews

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Zips In Decatur, Illinois

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2025 Compare Climate & Weather:
Decatur, IL vs Mechanicsville, VA

January has the coldest nighttime temperatures for Decatur with an average of 18.8°. This is warmer than most places in Illinois.

January has the coldest nighttime temperatures for Mechanicsville with an average of 27.5°. This is warmer than most places in Virginia.

In Decatur, there are 24.8 days annually when the high temperature is over 90°, which is hotter than most places in Illinois.

In Mechanicsville, there are 41.1 days annually when the high temperature is over 90°, which is one of the hottest places in Virginia.

In Decatur, there are 112.5 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Illinois.

In Mechanicsville, there are 82.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Virginia.

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

In Mechanicsville, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Virginia.

An annual snowfall of 13.0 inches in Decatur means that it is less snowy than most places in Illinois.

An annual snowfall of 12.3 inches in Mechanicsville means that it is less snowy than most places in Virginia.

January is the snowiest month in Decatur with 4.2 inches of snow, and 4 months of the year have significant snowfall.

January is the snowiest month in Mechanicsville with 4.9 inches of snow, and 4 months of the year have significant snowfall.