2024 Compare Climate & Weather:
Naperville, IL vs Wilmington, DE
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Highlights
On average, there are 199 sunny days per year in Wilmington. Naperville averages 189 sunny days per year. The US average is 205 sunny days.
Wilmington, Delaware gets 44.7 inches of rain, on average, per year. Naperville, Illinois gets 38.6 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.
Wilmington averages 13 inches of snow per year. Naperville averages 28.7 inches of snow per year. The US average is 27.8 inches of snow per year.
Weather Highlights
Wilmington, Delaware
Summer High: the July high is around 86.1 degrees
Winter Low: the January low is 25.2
Rain: averages 44.7 inches of rain a year
Snow: averages 13 inches of snow a year
Naperville, Illinois
Summer High: the July high is around 83.8 degrees
Winter Low: the January low is 15.1
Rain: averages 38.6 inches of rain a year
Snow: averages 28.7 inches of snow a year
BESTPLACES COMFORT INDEX
WilmingtonThe annual BestPlaces Comfort Index for Wilmington is 7.3 (10=best), which means it is about average compared to other places in Delaware.
7.3 / 10
September, June and May are the most pleasant months in Wilmington, while January and February are the least comfortable months.
NapervilleThe annual BestPlaces Comfort Index for Naperville 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 Naperville, while January and December are the least comfortable months.
Today's Weather - Naperville, IL
9 AM PST
Mostly Sunny
73°F
| DAY | DESCRIPTION | HIGH / LOW | WIND |
|---|
| Today | Mostly Sunny | 79° / 58° | S 10 mph |
| Saturday | Rain Showers Likely | 69° / 57° | SE 5 to 10 mph |
| Sunday | Mostly Sunny | 79° / 61° | ENE 0 to 5 mph |
| Monday | Chance Showers And Thunderstorms | 82° / 66° | S 10 to 15 mph |
| Tuesday | Chance Showers And Thunderstorms | 85° / 67° | SSW 5 to 10 mph |
| Wednesday | Chance Showers And Thunderstorms | 82° / 61° | SW 5 to 15 mph |
| Thursday | Slight Chance Rain Showers | 79° / 58° | WNW 10 to 15 mph |
Average Monthly High / Low (°F)
| Month | Naperville, IL | Wilmington, DE |
|---|
| January | 31° / 15° | 40° / 25° |
| February | 35° / 18° | 43° / 27° |
| March | 47° / 27° | 52° / 34° |
| April | 60° / 38° | 63° / 44° |
| May | 70° / 48° | 73° / 53° |
| June | 80° / 59° | 82° / 63° |
| July | 84° / 63° | 86° / 68° |
| August | 81° / 61° | 84° / 67° |
| September | 75° / 52° | 77° / 59° |
| October | 63° / 41° | 66° / 47° |
| November | 48° / 30° | 55° / 38° |
| December | 35° / 19° | 44° / 29° |
Hot, Freezing, Rainy, Snowy Days: Naperville / Wilmington
| Month | Hot Days | Freezing Days | Rainy Days | Snowy Days |
|---|
| January | 0 / 0 | 28 / 23 | 10 / 10 | 6 / 3 |
| February | 0 / 0 | 25 / 20 | 9 / 9 | 5 / 2 |
| March | 0 / 0 | 22 / 12 | 11 / 10 | 3 / 1 |
| April | 0 / 0 | 8 / 2 | 11 / 11 | 0 / 0 |
| May | 0 / 1 | 0 / 0 | 12 / 10 | 0 / 0 |
| June | 2 / 4 | 0 / 0 | 11 / 10 | 0 / 0 |
| July | 3 / 8 | 0 / 0 | 10 / 10 | 0 / 0 |
| August | 2 / 5 | 0 / 0 | 10 / 8 | 0 / 0 |
| September | 1 / 1 | 0 / 0 | 8 / 8 | 0 / 0 |
| October | 0 / 0 | 6 / 1 | 9 / 8 | 0 / 0 |
| November | 0 / 0 | 19 / 7 | 10 / 9 | 1 / 0 |
| December | 0 / 0 | 28 / 19 | 11 / 10 | 6 / 1 |
July is the hottest month for Naperville with an average high temperature of 83.8°, which ranks it as cooler than most places in Illinois. In Naperville, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Naperville are June, September and August.
July is the hottest month for Wilmington with an average high temperature of 86.1°, which ranks it as cooler than most places in Delaware. In Wilmington, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Wilmington are September, June and May.
January has the coldest nighttime temperatures for Naperville with an average of 15.1°. This is colder than most places in Illinois.
January has the coldest nighttime temperatures for Wilmington with an average of 25.2°. This is colder than most places in Delaware.
In Naperville, there are 8.6 days annually when the high temperature is over 90°, which is one of the coolest places in Illinois.
In Wilmington, there are 18.1 days annually when the high temperature is over 90°, which is one of the coolest places in Delaware.
In Naperville, there are 135.4 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Illinois.
In Wilmington, there are 84.0 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Delaware.
In Naperville, there are 6.1 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Illinois.
In Wilmington, there are 0.3 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Delaware.
August is the wettest month in Naperville with 4.2 inches of rain, and the driest month is January with 1.9 inches. The wettest season is Autumn with 32% of yearly precipitation and 16% occurs in Spring, which is the driest season. The annual rainfall of 38.6 inches in Naperville means that it is about average compared to other places in Illinois.
July is the wettest month in Wilmington with 4.9 inches of rain, and the driest month is February with 2.7 inches. The wettest season is Autumn with 27% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 44.7 inches in Wilmington means that it is drier than most places in Delaware.
May is the rainiest month in Naperville with 12.0 days of rain, and September is the driest month with only 7.9 rainy days. There are 120.3 rainy days annually in Naperville, which is rainier than most places in Illinois. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 22% chance of a rainy day.
April is the rainiest month in Wilmington with 10.5 days of rain, and August is the driest month with only 7.8 rainy days. There are 110.4 rainy days annually in Wilmington, which is less rainy than most places in Delaware. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 22% chance of a rainy day.
An annual snowfall of 28.7 inches in Naperville means that it is snowier than most places in Illinois.
An annual snowfall of 13.0 inches in Wilmington means that it is about average compared to other places in Delaware.
January is the snowiest month in Naperville with 9.1 inches of snow, and 6 months of the year have significant snowfall.
February is the snowiest month in Wilmington with 4.8 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 Naperville 
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 Naperville
Reviews for Wilmington 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 Wilmington
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