Average Weather at Spartanburg Downtown Memorial Airport South Carolina, United States
At Spartanburg Downtown Memorial Airport, the summers are hot and muggy, the winters are cold and wet, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 34°F to 90°F and is rarely below 21°F or above 97°F.
Based on the tourism score, the best times of year to visit Spartanburg Downtown Memorial Airport for warm-weather activities are from early May to early June and from late August to mid October.
The hot season lasts for 3.6 months, from May 25 to September 14, with an average daily high temperature above 83°F. The hottest day of the year is July 20, with an average high of 90°F and low of 70°F.
The cool season lasts for 3.0 months, from November 27 to February 28, with an average daily high temperature below 60°F. The coldest day of the year is January 18, with an average low of 34°F and high of 53°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
Bir el Ater, Algeria (4,909 miles away); Kafr Takhārīm, Syria (6,140 miles); and Baiyun, China (8,018 miles) are the far-away foreign places with temperatures most similar to Spartanburg Downtown Memorial Airport (view comparison).
At Spartanburg Downtown Memorial Airport, 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 at Spartanburg Downtown Memorial Airport begins around August 3 and lasts for 3.7 months, ending around November 23. On October 8, 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 23 and lasts for 8.4 months, ending around August 3. On January 4, the cloudiest day of the year, the sky is overcast or mostly cloudy 50% of the time, and clear, mostly clear, or partly cloudy 50% 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 at Spartanburg Downtown Memorial Airport varies throughout the year.
The wetter season lasts 3.5 months, from May 13 to August 30, with a greater than 32% chance of a given day being a wet day. The chance of a wet day peaks at 45% on July 28.
The drier season lasts 8.5 months, from August 30 to May 13. The smallest chance of a wet day is 19% on October 29.
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 45% on July 28.
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. Spartanburg Downtown Memorial Airport experiences some seasonal variation in monthly rainfall.
Rain falls throughout the year at Spartanburg Downtown Memorial Airport. The most rain falls during the 31 days centered around March 16, with an average total accumulation of 3.9 inches.
The least rain falls around October 30, with an average total accumulation of 3.0 inches.
Average Monthly Rainfall
The sliding 31-day liquid-equivalent quantity of snowfall at Spartanburg Downtown Memorial Airport does not vary significantly over the course of the year, staying within 0.1 inches of 0.1 inches throughout.
Average Liquid-Equivalent Monthly Snowfall
The length of the day at Spartanburg Downtown Memorial Airport varies significantly over the course of the year. In 2019, the shortest day is December 21, with 9 hours, 49 minutes of daylight; the longest day is June 21, with 14 hours, 30 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 6:13 AM on June 13, and the latest sunrise is 1 hour, 36 minutes later at 7:49 AM on November 2. The earliest sunset is at 5:16 PM on December 5, and the latest sunset is 3 hours, 29 minutes later at 8:45 PM on June 28.
Daylight saving time (DST) is observed at Spartanburg Downtown Memorial Airport during 2019, starting in the spring on March 10, lasting 7.8 months, and ending in the fall on November 3.
Sunrise & Sunset with Twilight and Daylight Saving Time
Spartanburg Downtown Memorial Airport experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 4.6 months, from May 15 to October 1, during which time the comfort level is muggy, oppressive, or miserable at least 22% of the time. The muggiest day of the year is July 25, with muggy conditions 87% of the time.
The least muggy day of the year is February 8, 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 at Spartanburg Downtown Memorial Airport experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 7.4 months, from October 5 to May 17, with average wind speeds of more than 5.4 miles per hour. The windiest day of the year is March 8, with an average hourly wind speed of 6.6 miles per hour.
The calmer time of year lasts for 4.6 months, from May 17 to October 5. The calmest day of the year is August 1, with an average hourly wind speed of 4.2 miles per hour.
Average Wind Speed
The predominant average hourly wind direction at Spartanburg Downtown Memorial Airport varies throughout the year.
The wind is most often from the west for 3.8 months, from April 10 to August 5, with a peak percentage of 35% on July 1. The wind is most often from the north for 1.1 weeks, from August 5 to August 13 and for 6.3 months, from September 14 to March 23, with a peak percentage of 27% on August 9. The wind is most often from the east for 1.0 months, from August 13 to September 14, with a peak percentage of 34% on September 6.
Best Time of Year to Visit
To characterize how pleasant the weather is at Spartanburg Downtown Memorial Airport 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 Spartanburg Downtown Memorial Airport for general outdoor tourist activities are from early May to early June and from late August to mid October, with a peak score in the third 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 Spartanburg Downtown Memorial Airport for hot-weather activities is from mid June to mid September, with a peak score in the third 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 at Spartanburg Downtown Memorial Airport typically lasts for 7.6 months (232 days), from around March 25 to around November 12, rarely starting before March 6 or after April 14, and rarely ending before October 21 or after December 2.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms at Spartanburg Downtown Memorial Airport should appear around February 16, only rarely appearing before January 29 or after March 6.
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 14 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 10 to February 6, with an average daily incident shortwave energy per square meter below 3.4 kWh. The darkest day of the year is December 25, with an average of 2.5 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Spartanburg Downtown Memorial Airport are 34.918 deg latitude, -81.958 deg longitude, and 748 ft elevation.
The topography within 2 miles of Spartanburg Downtown Memorial Airport contains only modest variations in elevation, with a maximum elevation change of 226 feet and an average elevation above sea level of 748 feet. Within 10 miles also contains only modest variations in elevation (472 feet). Within 50 miles contains only modest variations in elevation (4,127 feet).
The area within 2 miles of Spartanburg Downtown Memorial Airport is covered by artificial surfaces (68%), trees (21%), and cropland (12%), within 10 miles by trees (55%) and artificial surfaces (25%), and within 50 miles by trees (71%) and cropland (21%).
This report illustrates the typical weather at Spartanburg Downtown Memorial Airport, 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
Spartanburg Downtown Memorial Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.
In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.
The stations on which we may fall back include but are not limited to Greenville–Spartanburg International Airport, Greenville Downtown Airport, Laurens County Airport, Donaldson Center Airport, Shelby Municipal Airport, Rutherford County Airport, Newberry County Airport, and Greenwood County Airport.
Time zones for aiports and weather stations are provided by AskGeo.com .