The remote server returned an error: (400) Bad Request.The remote server returned an error: (400) Bad Request. 2025 Compare Climate & Weather: Black Diamond, WA vs Cornelius, NC

2025 Compare Climate & Weather:
Black Diamond, WA vs Cornelius, NC

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Highlights

On average, there are 215 sunny days per year in Cornelius. Black Diamond averages 156 sunny days per year. The US average is 205 sunny days.

Cornelius, North Carolina gets 43.1 inches of rain, on average, per year. Black Diamond, Washington gets 50 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Cornelius averages 2.7 inches of snow per year. Black Diamond averages 4.7 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Cornelius, North Carolina
Summer High: the July high is around 89.3 degrees
Winter Low: the January low is 28.1
Rain: averages 43.1 inches of rain a year
Snow: averages 2.7 inches of snow a year

Black Diamond, Washington
Summer High: the July high is around 75.7 degrees
Winter Low: the January low is 34.7
Rain: averages 50 inches of rain a year
Snow: averages 4.7 inches of snow a year

BestPlaces Comfort Index
Cornelius

The annual BestPlaces Comfort Index for Cornelius is 7.6 (10=best), which means it is one of the most pleasant places in North Carolina.

7.6 / 10
May, September and October are the most pleasant months in Cornelius, while January and July are the least comfortable months.

Black Diamond

The annual BestPlaces Comfort Index for Black Diamond is 7.0 (10=best), which means it is less comfortable than most places in Washington.

7 / 10
August, July and September are the most pleasant months in Black Diamond, while December and January are the least comfortable months.

Average Monthly High / Low (°F)
MonthBlack Diamond, WACornelius, NC
January46° / 35°51° / 28°
February49° / 34°55° / 31°
March53° / 37°63° / 38°
April58° / 40°72° / 46°
May64° / 45°79° / 55°
June70° / 49°86° / 64°
July76° / 53°89° / 68°
August76° / 52°88° / 67°
September70° / 48°82° / 60°
October59° / 42°72° / 48°
November50° / 38°63° / 38°
December44° / 33°53° / 31°
Hot, Freezing, Rainy, Snowy Days: Black Diamond / Cornelius
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 010 / 2120 / 91 / 1
February0 / 011 / 1616 / 91 / 0
March0 / 07 / 919 / 90 / 0
April0 / 02 / 217 / 90 / 0
May0 / 20 / 015 / 90 / 0
June1 / 90 / 011 / 100 / 0
July2 / 150 / 06 / 110 / 0
August1 / 110 / 06 / 90 / 0
September0 / 30 / 09 / 70 / 0
October0 / 02 / 215 / 70 / 0
November0 / 06 / 920 / 81 / 0
December0 / 012 / 1919 / 91 / 0
August is the hottest month for Black Diamond with an average high temperature of 76.4°, which ranks it as cooler than most places in Washington. In Black Diamond, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Black Diamond are August, July and September.

July is the hottest month for Cornelius with an average high temperature of 89.3°, which ranks it as about average compared to other places in North Carolina. In Cornelius, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Cornelius are May, September and October.
December has the coldest nighttime temperatures for Black Diamond with an average of 33.2°. This is about average compared to other places in Washington.

January has the coldest nighttime temperatures for Cornelius with an average of 28.1°. This is colder than most places in North Carolina.

In Black Diamond, there are 3.3 days annually when the high temperature is over 90°, which is about average compared to other places in Washington.

In Cornelius, there are 40.4 days annually when the high temperature is over 90°, which is hotter than most places in North Carolina.

In Black Diamond, there are 49.9 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Washington.

In Cornelius, there are 76.7 days annually when the nighttime low temperature falls below freezing, which is colder than most places in North Carolina.

In Black Diamond, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Washington.

In Cornelius, there are 0.1 days annually when the nighttime low temperature falls below zero°, which is colder than most places in North Carolina.

November is the wettest month in Black Diamond with 7.9 inches of rain, and the driest month is July with 1.3 inches. The wettest season is Spring with 34% of yearly precipitation and 11% occurs in Autumn, which is the driest season. The annual rainfall of 50.0 inches in Black Diamond means that it is wetter than most places in Washington.


July is the wettest month in Cornelius with 4.3 inches of rain, and the driest month is April with 3.2 inches. The wettest season is Autumn with 29% of yearly precipitation and 23% occurs in Spring, which is the driest season. The annual rainfall of 43.1 inches in Cornelius means that it is one of the driest places in North Carolina.

November is the rainiest month in Black Diamond with 20.3 days of rain, and August is the driest month with only 5.8 rainy days. There are 173.6 rainy days annually in Black Diamond, which is rainier than most places in Washington. The rainiest season is Spring when it rains 31% of the time and the driest is Autumn with only a 14% chance of a rainy day.

July is the rainiest month in Cornelius with 10.5 days of rain, and October is the driest month with only 7.0 rainy days. There are 107.2 rainy days annually in Cornelius, which is less rainy than most places in North Carolina. The rainiest season is Autumn 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 4.7 inches in Black Diamond means that it is about average compared to other places in Washington.

An annual snowfall of 2.7 inches in Cornelius means that it is about average compared to other places in North Carolina.
November is the snowiest month in Black Diamond with 1.4 inches of snow, and 4 months of the year have significant snowfall.

January is the snowiest month in Cornelius with 1.2 inches of snow, and 2 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 Black Diamond    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 Black Diamond

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Reviews for Cornelius    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 Cornelius

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Zips In Black Diamond, Washington
98010
Zips In CORNELIUS, NORTH CAROLINA
28031
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