Average Weather in Cornelius North Carolina, United States
In Cornelius, the summers are hot and muggy, the winters are very cold and wet, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 32°F to 88°F and is rarely below 20°F or above 95°F.
Based on the tourism score, the best times of year to visit Cornelius for warm-weather activities are from early May to mid June and from mid August to early October.
The hot season lasts for 3.7 months, from May 26 to September 15, with an average daily high temperature above 81°F. The hottest day of the year is July 20, with an average high of 88°F and low of 70°F.
The cool season lasts for 3.0 months, from November 28 to February 27, with an average daily high temperature below 58°F. The coldest day of the year is January 23, with an average low of 32°F and high of 51°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
In Cornelius, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.
The clearer part of the year in Cornelius begins around August 2 and lasts for 3.7 months, ending around November 22. On October 11, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 66% of the time, and overcast or mostly cloudy 34% of the time.
The cloudier part of the year begins around November 22 and lasts for 8.4 months, ending around August 2. On January 4, the cloudiest day of the year, the sky is overcast or mostly cloudy 51% of the time, and clear, mostly clear, or partly cloudy 49% of the time.
Cloud Cover Categories
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Cornelius varies throughout the year.
The wetter season lasts 3.7 months, from May 8 to August 31, with a greater than 31% chance of a given day being a wet day. The chance of a wet day peaks at 44% on July 13.
The drier season lasts 8.3 months, from August 31 to May 8. The smallest chance of a wet day is 18% on October 30.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 44% on July 13.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Cornelius experiences some seasonal variation in monthly rainfall.
Rain falls throughout the year in Cornelius. The most rain falls during the 31 days centered around August 13, with an average total accumulation of 3.5 inches.
The least rain falls around January 29, with an average total accumulation of 2.8 inches.
Average Monthly Rainfall
We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.
As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Cornelius experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 3.1 months, from December 6 to March 10, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 22, with an average total liquid-equivalent accumulation of 0.3 inches.
The snowless period of the year lasts for 8.9 months, from March 10 to December 6. The least snow falls around July 22, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Cornelius varies significantly over the course of the year. In 2021, the shortest day is December 21, with 9 hours, 46 minutes of daylight; the longest day is June 20, with 14 hours, 34 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 6:07 AM on June 12, and the latest sunrise is 1 hour, 43 minutes later at 7:50 AM on November 6. The earliest sunset is at 5:10 PM on December 5, and the latest sunset is 3 hours, 33 minutes later at 8:42 PM on June 28.
Daylight saving time (DST) is observed in Cornelius during 2021, starting in the spring on March 14, lasting 7.8 months, and ending in the fall on November 7.
Sunrise & Sunset with Twilight and Daylight Saving Time
The figure below presents a compact representation of key lunar data for 2021. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.
Moon Rise, Set & Phases
Cornelius experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 4.2 months, from May 23 to September 28, during which time the comfort level is muggy, oppressive, or miserable at least 20% of the time. The muggiest day of the year is July 24, with muggy conditions 81% of the time.
The least muggy day of the year is February 19, when muggy conditions are essentially unheard of.
Humidity Comfort Levels
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Cornelius experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 6.5 months, from November 1 to May 19, with average wind speeds of more than 7.0 miles per hour. The windiest day of the year is March 8, with an average hourly wind speed of 8.5 miles per hour.
The calmer time of year lasts for 5.4 months, from May 19 to November 1. The calmest day of the year is August 1, with an average hourly wind speed of 5.4 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Cornelius varies throughout the year.
The wind is most often from the north for 1.3 months, from February 8 to March 16; for 3.1 months, from September 10 to December 12; and for 3.0 days, from December 15 to December 18, with a peak percentage of 35% on October 15. The wind is most often from the south for 1.3 months, from March 16 to April 26, with a peak percentage of 32% on April 16. The wind is most often from the west for 3.5 months, from April 26 to August 12; for 3.0 days, from December 12 to December 15; and for 1.6 months, from December 18 to February 8, with a peak percentage of 35% on July 5.
Best Time of Year to Visit
To characterize how pleasant the weather is in Cornelius throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best times of year to visit Cornelius for general outdoor tourist activities are from early May to mid June and from mid August to early October, with a peak score in the first week of September.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Cornelius for hot-weather activities is from mid June to early September, with a peak score in the second week of August.
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
The growing season in Cornelius typically lasts for 7.4 months (226 days), from around March 25 to around November 6, rarely starting before March 6 or after April 16, and rarely ending before October 19 or after November 23.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Cornelius should appear around February 21, only rarely appearing before February 4 or after March 9.
Growing Degree Days
The average daily incident shortwave solar energy experiences significant seasonal variation over the course of the year.
The brighter period of the year lasts for 4.3 months, from April 17 to August 25, with an average daily incident shortwave energy per square meter above 6.0 kWh. The brightest day of the year is June 23, with an average of 6.9 kWh.
The darker period of the year lasts for 2.9 months, from November 9 to February 7, with an average daily incident shortwave energy per square meter below 3.3 kWh. The darkest day of the year is December 25, with an average of 2.4 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Cornelius are 35.487 deg latitude, -80.860 deg longitude, and 778 ft elevation.
The topography within 2 miles of Cornelius contains only modest variations in elevation, with a maximum elevation change of 157 feet and an average elevation above sea level of 774 feet. Within 10 miles also contains only modest variations in elevation (397 feet). Within 50 miles contains only modest variations in elevation (2,700 feet).
The area within 2 miles of Cornelius is covered by artificial surfaces (60%), water (16%), and trees (15%), within 10 miles by trees (32%) and artificial surfaces (29%), and within 50 miles by trees (51%) and cropland (35%).
This report illustrates the typical weather in Cornelius, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Cornelius.
For each station, the records are corrected for the elevation difference between that station and Cornelius according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Cornelius is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Cornelius and a given station.
The stations contributing to this reconstruction are: Concord Regional Airport (37%, 18 kilometers, southeast); Lincolnton, Lincolnton-Lincoln County Regional Airport (19%, 27 kilometers, west); Charlotte Douglas International Airport (16%, 30 kilometers, south); Statesville Regional Airport (15%, 32 kilometers, north); and Rowan County Airport (13%, 36 kilometers, northeast).
Time zones for airports and weather stations are provided by AskGeo.com .