2025 Compare Climate & Weather:
Somonauk, IL vs Twin Falls, ID

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Highlights

On average, there are 210 sunny days per year in Twin Falls. Somonauk averages 190 sunny days per year. The US average is 205 sunny days.

Twin Falls, Idaho gets 10.4 inches of rain, on average, per year. Somonauk, Illinois gets 38 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Twin Falls averages 18.2 inches of snow per year. Somonauk averages 29.2 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Twin Falls, Idaho
Summer High: the July high is around 89.3 degrees
Winter Low: the January low is 20.3
Rain: averages 10.4 inches of rain a year
Snow: averages 18.2 inches of snow a year

Somonauk, Illinois
Summer High: the July high is around 83.1 degrees
Winter Low: the January low is 13.5
Rain: averages 38 inches of rain a year
Snow: averages 29.2 inches of snow a year

BestPlaces Comfort Index

Twin Falls

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

7.2 / 10

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

Somonauk

The annual BestPlaces Comfort Index for Somonauk 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 Somonauk, while January and December are the least comfortable months.

Average Monthly High / Low (°F)

Month	Somonauk, IL	Twin Falls, ID
January	29° / 14°	37° / 20°
February	34° / 18°	43° / 23°
March	46° / 28°	53° / 30°
April	60° / 38°	61° / 35°
May	70° / 48°	71° / 42°
June	80° / 58°	80° / 50°
July	83° / 62°	89° / 56°
August	81° / 60°	88° / 54°
September	75° / 52°	78° / 45°
October	62° / 40°	65° / 36°
November	47° / 30°	49° / 27°
December	33° / 18°	37° / 20°

Hot, Freezing, Rainy, Snowy Days: Somonauk / Twin Falls

Month	Hot Days	Freezing Days	Rainy Days	Snowy Days
January	0 / 0	29 / 28	8 / 9	6 / 4
February	0 / 0	26 / 24	7 / 8	4 / 2
March	0 / 0	22 / 20	9 / 9	2 / 1
April	0 / 0	8 / 11	11 / 8	0 / 1
May	0 / 1	1 / 2	12 / 7	0 / 0
June	3 / 5	0 / 0	11 / 6	0 / 0
July	4 / 16	0 / 0	9 / 3	0 / 0
August	2 / 14	0 / 0	9 / 3	0 / 0
September	1 / 3	0 / 1	8 / 3	0 / 0
October	0 / 0	6 / 10	9 / 6	0 / 0
November	0 / 0	18 / 22	9 / 9	1 / 2
December	0 / 0	27 / 28	10 / 10	5 / 4

July is the hottest month for Somonauk with an average high temperature of 83.1°, which ranks it as one of the coolest places in Illinois. In Somonauk, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Somonauk are June, August and September.

July is the hottest month for Twin Falls with an average high temperature of 89.3°, which ranks it as warmer than most places in Idaho. In Twin Falls, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Twin Falls are September, June and May.

January has the coldest nighttime temperatures for Somonauk with an average of 13.5°. This is colder than most places in Illinois.

December has the coldest nighttime temperatures for Twin Falls with an average of 19.7°. This is about average compared to other places in Idaho.

In Somonauk, there are 8.8 days annually when the high temperature is over 90°, which is one of the coolest places in Illinois.

In Twin Falls, there are 38.4 days annually when the high temperature is over 90°, which is hotter than most places in Idaho.

In Somonauk, there are 136.3 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Illinois.

In Twin Falls, there are 146.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Idaho.

In Somonauk, there are 11.2 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Illinois.

In Twin Falls, there are 3.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Idaho.

July is the wettest month in Somonauk with 4.5 inches of rain, and the driest month is January with 1.6 inches. The wettest season is Autumn with 34% of yearly precipitation and 14% occurs in Spring, which is the driest season. The annual rainfall of 38.0 inches in Somonauk means that it is drier than most places in Illinois.

December is the wettest month in Twin Falls with 1.4 inches of rain, and the driest month is July with 0.2 inches. The wettest season is Summer with 32% of yearly precipitation and 13% occurs in Autumn, which is the driest season. The annual rainfall of 10.4 inches in Twin Falls means that it is drier than most places in Idaho.

May is the rainiest month in Somonauk with 11.5 days of rain, and February is the driest month with only 7.1 rainy days. There are 109.6 rainy days annually in Somonauk, 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.

December is the rainiest month in Twin Falls with 9.5 days of rain, and July is the driest month with only 2.5 rainy days. There are 78.5 rainy days annually in Twin Falls, which is less rainy than most places in Idaho. The rainiest season is Spring when it rains 33% of the time and the driest is Autumn with only a 14% chance of a rainy day.

An annual snowfall of 29.2 inches in Somonauk means that it is snowier than most places in Illinois.

An annual snowfall of 18.2 inches in Twin Falls means that it is less snowy than most places in Idaho.

January is the snowiest month in Somonauk with 9.3 inches of snow, and 6 months of the year have significant snowfall.

December is the snowiest month in Twin Falls with 5.5 inches of snow, and 5 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 Somonauk 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 Twin Falls 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 Twin Falls

See all reviews

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2025 Compare Climate & Weather:
Somonauk, IL vs Twin Falls, ID

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Somonauk / Twin Falls

January has the coldest nighttime temperatures for Somonauk with an average of 13.5°. This is colder than most places in Illinois.

December has the coldest nighttime temperatures for Twin Falls with an average of 19.7°. This is about average compared to other places in Idaho.

In Somonauk, there are 8.8 days annually when the high temperature is over 90°, which is one of the coolest places in Illinois.

In Twin Falls, there are 38.4 days annually when the high temperature is over 90°, which is hotter than most places in Idaho.

In Somonauk, there are 136.3 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Illinois.

In Twin Falls, there are 146.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Idaho.

In Somonauk, there are 11.2 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Illinois.

In Twin Falls, there are 3.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Idaho.

An annual snowfall of 29.2 inches in Somonauk means that it is snowier than most places in Illinois.

An annual snowfall of 18.2 inches in Twin Falls means that it is less snowy than most places in Idaho.

January is the snowiest month in Somonauk with 9.3 inches of snow, and 6 months of the year have significant snowfall.

December is the snowiest month in Twin Falls with 5.5 inches of snow, and 5 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Somonauk 2 Reviews

Reviews for Twin Falls 2 Reviews

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2025 Compare Climate & Weather:Somonauk, IL vs Twin Falls, ID

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Somonauk / Twin Falls

January has the coldest nighttime temperatures for Somonauk with an average of 13.5°. This is colder than most places in Illinois.December has the coldest nighttime temperatures for Twin Falls with an average of 19.7°. This is about average compared to other places in Idaho.

In Somonauk, there are 8.8 days annually when the high temperature is over 90°, which is one of the coolest places in Illinois.In Twin Falls, there are 38.4 days annually when the high temperature is over 90°, which is hotter than most places in Idaho.

In Somonauk, there are 136.3 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Illinois.In Twin Falls, there are 146.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Idaho.

In Somonauk, there are 11.2 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Illinois.In Twin Falls, there are 3.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Idaho.

An annual snowfall of 29.2 inches in Somonauk means that it is snowier than most places in Illinois.An annual snowfall of 18.2 inches in Twin Falls means that it is less snowy than most places in Idaho.

January is the snowiest month in Somonauk with 9.3 inches of snow, and 6 months of the year have significant snowfall.December is the snowiest month in Twin Falls with 5.5 inches of snow, and 5 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Somonauk 2 Reviews

Reviews for Twin Falls 2 Reviews

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2025 Compare Climate & Weather:
Somonauk, IL vs Twin Falls, ID

January has the coldest nighttime temperatures for Somonauk with an average of 13.5°. This is colder than most places in Illinois.

December has the coldest nighttime temperatures for Twin Falls with an average of 19.7°. This is about average compared to other places in Idaho.

In Somonauk, there are 8.8 days annually when the high temperature is over 90°, which is one of the coolest places in Illinois.

In Twin Falls, there are 38.4 days annually when the high temperature is over 90°, which is hotter than most places in Idaho.

In Somonauk, there are 136.3 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Illinois.

In Twin Falls, there are 146.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Idaho.

In Somonauk, there are 11.2 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Illinois.

In Twin Falls, there are 3.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Idaho.

An annual snowfall of 29.2 inches in Somonauk means that it is snowier than most places in Illinois.

An annual snowfall of 18.2 inches in Twin Falls means that it is less snowy than most places in Idaho.

January is the snowiest month in Somonauk with 9.3 inches of snow, and 6 months of the year have significant snowfall.

December is the snowiest month in Twin Falls with 5.5 inches of snow, and 5 months of the year have significant snowfall.