2024 Compare Climate & Weather:
Portland, OR vs Chicago, IL
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Highlights
On average, there are 189 sunny days per year in Chicago. Portland averages 144 sunny days per year. The US average is 205 sunny days.
Chicago, Illinois gets 38.2 inches of rain, on average, per year. Portland, Oregon gets 42.8 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.
Chicago averages 35.1 inches of snow per year. Portland averages 2.6 inches of snow per year. The US average is 27.8 inches of snow per year.
Weather Highlights
Chicago, Illinois
Summer High: the July high is around 83.9 degrees
Winter Low: the January low is 19.2
Rain: averages 38.2 inches of rain a year
Snow: averages 35.1 inches of snow a year
Portland, Oregon
Summer High: the July high is around 80.5 degrees
Winter Low: the January low is 36.4
Rain: averages 42.8 inches of rain a year
Snow: averages 2.6 inches of snow a year
BESTPLACES COMFORT INDEX
ChicagoThe annual BestPlaces Comfort Index for Chicago is 7.0 (10=best), which means it is about average compared to other places in Illinois.
7 / 10
September, June and August are the most pleasant months in Chicago, while January and December are the least comfortable months.
PortlandThe annual BestPlaces Comfort Index for Portland is 7.5 (10=best), which means it is more comfortable than most places in Oregon.
7.5 / 10
August, July and September are the most pleasant months in Portland, while December and January are the least comfortable months.
Today's Weather - Portland, OR
7 PM PST
Mostly Clear
70°F
| DAY | DESCRIPTION | HIGH / LOW | WIND |
|---|
| Tonight | Mostly Clear | 51° / 68° | E 9 to 14 mph |
| Saturday Night | Light Rain Likely | 42° / 60° | SW 5 to 10 mph |
| Sunday Night | Mostly Clear | 39° / 70° | N 8 mph |
| Monday Night | Mostly Cloudy | 46° / 72° | NNE 7 to 13 mph |
| Tuesday Night | Slight Chance Light Rain | 47° / 64° | WSW 6 to 13 mph |
| Wednesday Night | Chance Rain Showers then Chance Light Rain | 45° / 58° | W 6 to 10 mph |
| Thursday Night | Rain Showers Likely | 48° / 61° | SSW 9 mph |
Today's Weather - Chicago, IL
7 PM PST
Mostly Clear
52°F
| DAY | DESCRIPTION | HIGH / LOW | WIND |
|---|
| Tonight | Mostly Clear | 36° / 51° | WNW 10 mph |
| Saturday Night | Partly Cloudy | 38° / 60° | WNW 5 to 10 mph |
| Sunday Night | Mostly Clear | 42° / 65° | W 5 to 10 mph |
| Monday Night | Chance Rain Showers | 52° / 65° | SSW 15 to 20 mph |
| Tuesday Night | Showers And Thunderstorms Likely | 41° / 49° | NW 15 mph |
| Wednesday Night | Mostly Clear | 37° / 53° | NE 10 to 15 mph |
| Thursday Night | Chance Rain Showers | 45° / 61° | ESE 10 to 15 mph |
Average Monthly High / Low (°F)
| Month | Portland, OR | Chicago, IL |
|---|
| January | 48° / 36° | 32° / 19° |
| February | 52° / 37° | 37° / 23° |
| March | 57° / 40° | 47° / 31° |
| April | 62° / 43° | 58° / 41° |
| May | 68° / 48° | 69° / 51° |
| June | 74° / 52° | 79° / 61° |
| July | 81° / 56° | 84° / 68° |
| August | 81° / 56° | 82° / 67° |
| September | 76° / 52° | 75° / 59° |
| October | 64° / 46° | 63° / 47° |
| November | 53° / 40° | 49° / 36° |
| December | 46° / 36° | 36° / 24° |
Hot, Freezing, Rainy, Snowy Days: Portland / Chicago
| Month | Hot Days | Freezing Days | Rainy Days | Snowy Days |
|---|
| January | 0 / 0 | 7 / 27 | 19 / 10 | 1 / 7 |
| February | 0 / 0 | 6 / 23 | 15 / 8 | 0 / 5 |
| March | 0 / 0 | 3 / 17 | 18 / 11 | 0 / 4 |
| April | 0 / 0 | 1 / 3 | 16 / 11 | 0 / 1 |
| May | 1 / 1 | 0 / 0 | 13 / 12 | 0 / 0 |
| June | 1 / 3 | 0 / 0 | 9 / 10 | 0 / 0 |
| July | 4 / 6 | 0 / 0 | 4 / 10 | 0 / 0 |
| August | 4 / 4 | 0 / 0 | 4 / 10 | 0 / 0 |
| September | 1 / 1 | 0 / 0 | 7 / 9 | 0 / 0 |
| October | 0 / 0 | 1 / 1 | 13 / 10 | 0 / 0 |
| November | 0 / 0 | 3 / 10 | 19 / 11 | 0 / 2 |
| December | 0 / 0 | 9 / 24 | 19 / 11 | 1 / 6 |
August is the hottest month for Portland with an average high temperature of 81.1°, which ranks it as cooler than most places in Oregon. In Portland, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Portland are September, July and August.
July is the hottest month for Chicago with an average high temperature of 83.9°, which ranks it as cooler than most places in Illinois. In Chicago, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Chicago are June, September and August.
December has the coldest nighttime temperatures for Portland with an average of 35.6°. This is warmer than most places in Oregon.
January has the coldest nighttime temperatures for Chicago with an average of 19.2°. This is warmer than most places in Illinois.
In Portland, there are 11.6 days annually when the high temperature is over 90°, which is cooler than most places in Oregon.
In Chicago, there are 13.6 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.
In Portland, there are 29.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Oregon.
In Chicago, there are 103.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Illinois.
In Portland, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Oregon.
In Chicago, there are 4.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Illinois.
December is the wettest month in Portland with 6.8 inches of rain, and the driest month is July with 0.7 inches. The wettest season is Spring with 41% of yearly precipitation and 7% occurs in Autumn, which is the driest season. The annual rainfall of 42.8 inches in Portland means that it is about average compared to other places in Oregon.
August is the wettest month in Chicago with 4.2 inches of rain, and the driest month is January with 2.0 inches. The wettest season is Autumn with 31% of yearly precipitation and 17% occurs in Spring, which is the driest season. The annual rainfall of 38.2 inches in Chicago means that it is drier than most places in Illinois.
November is the rainiest month in Portland with 19.3 days of rain, and August is the driest month with only 3.7 rainy days. There are 155.9 rainy days annually in Portland, which is rainier than most places in Oregon. The rainiest season is Spring when it rains 34% of the time and the driest is Autumn with only a 11% chance of a rainy day.
May is the rainiest month in Chicago with 11.5 days of rain, and February is the driest month with only 8.4 rainy days. There are 124.8 rainy days annually in Chicago, which is one of the rainiest places in Illinois. The rainiest season is Summer when it rains 27% of the time and the driest is Spring with only a 24% chance of a rainy day.
An annual snowfall of 2.6 inches in Portland means that it is less snowy than most places in Oregon.
An annual snowfall of 35.1 inches in Chicago means that it is one of the snowiest places in Illinois.
December is the snowiest month in Portland with 0.9 inches of snow, and 3 months of the year have significant snowfall.
January is the snowiest month in Chicago with 11.0 inches of snow, and 6 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 Portland 
2 Reviews
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
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
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Reviews for Chicago 2 Reviews
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
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
Start Your Review of Chicago
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