2025 Compare Climate & Weather:
Plainfield, IL vs Riverton, UT

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Highlights

On average, there are 225 sunny days per year in Riverton. Plainfield averages 188 sunny days per year. The US average is 205 sunny days.

Riverton, Utah gets 16.4 inches of rain, on average, per year. Plainfield, Illinois gets 39.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Riverton averages 43.2 inches of snow per year. Plainfield averages 29.4 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Riverton, Utah
Summer High: the July high is around 91.7 degrees
Winter Low: the January low is 20.2
Rain: averages 16.4 inches of rain a year
Snow: averages 43.2 inches of snow a year

Plainfield, Illinois
Summer High: the July high is around 84 degrees
Winter Low: the January low is 16.1
Rain: averages 39.2 inches of rain a year
Snow: averages 29.4 inches of snow a year

BestPlaces Comfort Index

Riverton

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

7.1 / 10

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

Plainfield

The annual BestPlaces Comfort Index for Plainfield is 6.9 (10=best), which means it is less comfortable than most places in Illinois.

6.9 / 10

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

Average Monthly High / Low (°F)

Month	Plainfield, IL	Riverton, UT
January	31° / 16°	39° / 20°
February	36° / 20°	44° / 23°
March	47° / 29°	54° / 31°
April	61° / 40°	63° / 37°
May	71° / 50°	73° / 45°
June	81° / 60°	84° / 52°
July	84° / 64°	92° / 60°
August	82° / 63°	90° / 59°
September	76° / 55°	80° / 49°
October	63° / 43°	66° / 38°
November	49° / 33°	50° / 29°
December	35° / 20°	40° / 21°

Hot, Freezing, Rainy, Snowy Days: Plainfield / Riverton

Month	Hot Days	Freezing Days	Rainy Days	Snowy Days
January	0 / 0	28 / 28	10 / 8	7 / 5
February	0 / 0	24 / 23	9 / 8	5 / 4
March	0 / 0	20 / 17	11 / 9	3 / 2
April	0 / 0	6 / 8	12 / 8	0 / 1
May	1 / 1	0 / 2	13 / 8	0 / 0
June	3 / 7	0 / 0	11 / 5	0 / 0
July	5 / 20	0 / 0	10 / 4	0 / 0
August	3 / 15	0 / 0	10 / 6	0 / 0
September	1 / 3	0 / 1	8 / 6	0 / 0
October	0 / 0	3 / 7	10 / 7	0 / 0
November	0 / 0	14 / 20	10 / 8	1 / 2
December	0 / 0	26 / 28	12 / 8	7 / 5

July is the hottest month for Plainfield with an average high temperature of 84.0°, which ranks it as cooler than most places in Illinois. In Plainfield, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Plainfield are September, June and August.

July is the hottest month for Riverton with an average high temperature of 91.7°, which ranks it as warmer than most places in Utah. In Riverton, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Riverton are September, May and June.

January has the coldest nighttime temperatures for Plainfield with an average of 16.1°. This is about average compared to other places in Illinois.

January has the coldest nighttime temperatures for Riverton with an average of 20.2°. This is warmer than most places in Utah.

In Plainfield, there are 12.1 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.

In Riverton, there are 45.9 days annually when the high temperature is over 90°, which is hotter than most places in Utah.

In Plainfield, there are 121.4 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Illinois.

In Riverton, there are 132.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Utah.

In Plainfield, there are 7.3 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Illinois.

In Riverton, there are 2.7 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Utah.

July is the wettest month in Plainfield with 4.5 inches of rain, and the driest month is January with 1.8 inches. The wettest season is Autumn with 33% of yearly precipitation and 15% occurs in Spring, which is the driest season. The annual rainfall of 39.2 inches in Plainfield means that it is about average compared to other places in Illinois.

May is the wettest month in Riverton with 1.9 inches of rain, and the driest month is July with 0.7 inches. The wettest season is Summer with 31% of yearly precipitation and 16% occurs in Autumn, which is the driest season. The annual rainfall of 16.4 inches in Riverton means that it is about average compared to other places in Utah.

May is the rainiest month in Plainfield with 12.5 days of rain, and September is the driest month with only 7.9 rainy days. There are 124.0 rainy days annually in Plainfield, which is one of the rainiest places in Illinois. The rainiest season is Summer when it rains 29% of the time and the driest is Winter with only a 22% chance of a rainy day.

March is the rainiest month in Riverton with 8.6 days of rain, and July is the driest month with only 4.4 rainy days. There are 83.9 rainy days annually in Riverton, which is rainier than most places in Utah. The rainiest season is Summer when it rains 30% of the time and the driest is Autumn with only a 18% chance of a rainy day.

An annual snowfall of 29.4 inches in Plainfield means that it is snowier than most places in Illinois.

An annual snowfall of 43.2 inches in Riverton means that it is about average compared to other places in Utah.

December is the snowiest month in Plainfield with 9.2 inches of snow, and 6 months of the year have significant snowfall.

December is the snowiest month in Riverton with 10.9 inches of snow, and 7 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 Plainfield 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 Riverton 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:
Plainfield, IL vs Riverton, UT

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Plainfield / Riverton

January has the coldest nighttime temperatures for Plainfield with an average of 16.1°. This is about average compared to other places in Illinois.

January has the coldest nighttime temperatures for Riverton with an average of 20.2°. This is warmer than most places in Utah.

In Plainfield, there are 12.1 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.

In Riverton, there are 45.9 days annually when the high temperature is over 90°, which is hotter than most places in Utah.

In Plainfield, there are 7.3 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Illinois.

In Riverton, there are 2.7 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Utah.

An annual snowfall of 29.4 inches in Plainfield means that it is snowier than most places in Illinois.

An annual snowfall of 43.2 inches in Riverton means that it is about average compared to other places in Utah.

December is the snowiest month in Plainfield with 9.2 inches of snow, and 6 months of the year have significant snowfall.

December is the snowiest month in Riverton with 10.9 inches of snow, and 7 months of the year have significant snowfall.

DID YOU KNOW?

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Reviews for Riverton 2 Reviews

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2025 Compare Climate & Weather:Plainfield, IL vs Riverton, UT

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Plainfield / Riverton

January has the coldest nighttime temperatures for Plainfield with an average of 16.1°. This is about average compared to other places in Illinois.January has the coldest nighttime temperatures for Riverton with an average of 20.2°. This is warmer than most places in Utah.

In Plainfield, there are 12.1 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.In Riverton, there are 45.9 days annually when the high temperature is over 90°, which is hotter than most places in Utah.

In Plainfield, there are 7.3 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Illinois.In Riverton, there are 2.7 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Utah.

An annual snowfall of 29.4 inches in Plainfield means that it is snowier than most places in Illinois.An annual snowfall of 43.2 inches in Riverton means that it is about average compared to other places in Utah.

December is the snowiest month in Plainfield with 9.2 inches of snow, and 6 months of the year have significant snowfall.December is the snowiest month in Riverton with 10.9 inches of snow, and 7 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Plainfield 2 Reviews

Reviews for Riverton 2 Reviews

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Zips In Plainfield, Illinois

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2025 Compare Climate & Weather:
Plainfield, IL vs Riverton, UT

January has the coldest nighttime temperatures for Plainfield with an average of 16.1°. This is about average compared to other places in Illinois.

January has the coldest nighttime temperatures for Riverton with an average of 20.2°. This is warmer than most places in Utah.

In Plainfield, there are 12.1 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.

In Riverton, there are 45.9 days annually when the high temperature is over 90°, which is hotter than most places in Utah.

In Plainfield, there are 7.3 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Illinois.

In Riverton, there are 2.7 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Utah.

An annual snowfall of 29.4 inches in Plainfield means that it is snowier than most places in Illinois.

An annual snowfall of 43.2 inches in Riverton means that it is about average compared to other places in Utah.

December is the snowiest month in Plainfield with 9.2 inches of snow, and 6 months of the year have significant snowfall.

December is the snowiest month in Riverton with 10.9 inches of snow, and 7 months of the year have significant snowfall.