Climate and Average Weather Year Round at Smyrna Airport United StatesAt Smyrna Airport, 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 30°F to 90°F and is rarely below 15°F or above 98°F. Based on the tourism score, the best times of year to visit Smyrna Airport for warm-weather activities are from mid May to late June and from early August to early October. Average Temperature at Smyrna AirportThe hot season lasts for 3.8 months, from May 25 to September 18, with an average daily high temperature above 82°F. The hottest month of the year at Smyrna Airport is July, with an average high of 90°F and low of 70°F. The cold season lasts for 3.0 months, from November 27 to February 27, with an average daily high temperature below 57°F. The coldest month of the year at Smyrna Airport is January, with an average low of 31°F and high of 48°F.
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 at Smyrna Airport
frigid
15°F
freezing
32°F
very cold
45°F
cold
55°F
cool
65°F
comfortable
75°F
warm
85°F
hot
95°F
sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.
Polýkastro, Greece (5,483 miles away); Mashhad, Iran (6,994 miles); and Dushanbe, Tajikistan (7,058 miles) are the far-away foreign places with temperatures most similar to Smyrna Airport (view comparison). 
Compare Smyrna Airport to another city:CloudsAt Smyrna Airport, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year. The clearer part of the year at Smyrna Airport begins around June 13 and lasts for 5.1 months, ending around November 15. The clearest month of the year at Smyrna Airport is August, during which on average the sky is clear, mostly clear, or partly cloudy 68% of the time. The cloudier part of the year begins around November 15 and lasts for 6.9 months, ending around June 13. The cloudiest month of the year at Smyrna Airport is January, during which on average the sky is overcast or mostly cloudy 55% of the time.
PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Smyrna Airport varies throughout the year. The wetter season lasts 5.0 months, from March 18 to August 20, with a greater than 33% chance of a given day being a wet day. The month with the most wet days at Smyrna Airport is June, with an average of 12.0 days with at least 0.04 inches of precipitation. The drier season lasts 7.0 months, from August 20 to March 18. The month with the fewest wet days at Smyrna Airport is October, with an average of 7.5 days with at least 0.04 inches of precipitation. Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone at Smyrna Airport is June, with an average of 12.0 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 42% on June 29.
RainfallTo 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. Smyrna Airport experiences some seasonal variation in monthly rainfall. Rain falls throughout the year at Smyrna Airport. The month with the most rain at Smyrna Airport is December, with an average rainfall of 4.4 inches. The month with the least rain at Smyrna Airport is August, with an average rainfall of 2.8 inches. Average Monthly Rainfall at Smyrna Airport
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.
SnowfallAs with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Smyrna Airport experiences some seasonal variation in monthly snowfall. The snowy period of the year lasts for 2.7 months, from December 14 to March 5, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow at Smyrna Airport is January, with an average snowfall of 2.2 inches. The snowless period of the year lasts for 9.3 months, from March 5 to December 14. The least snow falls around July 21, with an average total accumulation of 0.0 inches. Average Monthly Snowfall at Smyrna Airport
The average snowfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average rainfall.
SunThe length of the day at Smyrna Airport varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 43 minutes of daylight; the longest day is June 20, with 14 hours, 37 minutes of daylight. Hours of Daylight and Twilight at Smyrna Airport
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.
The earliest sunrise is at 5:28 AM on June 13, and the latest sunrise is 1 hour, 41 minutes later at 7:10 AM on November 2. The earliest sunset is at 4:31 PM on December 5, and the latest sunset is 3 hours, 35 minutes later at 8:06 PM on June 28. Daylight saving time (DST) is observed at Smyrna Airport during 2024, 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 at Smyrna Airport
The solar day over the course of the year 2024. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.
The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation. Solar Elevation and Azimuth at Smyrna Airport
northeastsouthwest
Solar elevation and azimuth over the course of the year 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).
MoonThe figure below presents a compact representation of key lunar data for 2024. 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. HumidityWe base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night. Smyrna Airport experiences extreme seasonal variation in the perceived humidity. The muggier period of the year lasts for 4.5 months, from May 14 to September 28, during which time the comfort level is muggy, oppressive, or miserable at least 21% of the time. The month with the most muggy days at Smyrna Airport is July, with 25.0 days that are muggy or worse. The month with the fewest muggy days at Smyrna Airport is February, with 0.0 days that are muggy or worse.
WindThis section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages. The average hourly wind speed at Smyrna Airport experiences significant seasonal variation over the course of the year. The windier part of the year lasts for 6.9 months, from October 20 to May 15, with average wind speeds of more than 6.8 miles per hour. The windiest month of the year at Smyrna Airport is March, with an average hourly wind speed of 8.6 miles per hour. The calmer time of year lasts for 5.1 months, from May 15 to October 20. The calmest month of the year at Smyrna Airport is July, with an average hourly wind speed of 5.1 miles per hour.
The predominant average hourly wind direction at Smyrna Airport is from the south throughout the year. Wind Direction at Smyrna Airport
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).
Best Time of Year to VisitTo characterize how pleasant the weather is at Smyrna 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 Smyrna Airport for general outdoor tourist activities are from mid May to late June and from early August to early October, with a peak score in the third week of September. Tourism Score at Smyrna Airport
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
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 Smyrna Airport for hot-weather activities is from mid June to early September, with a peak score in the second week of August. Beach/Pool Score at Smyrna Airport
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
MethodologyFor 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. Growing SeasonDefinitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere). The growing season at Smyrna Airport typically lasts for 6.9 months (211 days), from around April 1 to around October 30, rarely starting before March 13 or after April 20, and rarely ending before October 12 or after November 17. Time Spent in Various Temperature Bands and the Growing Season at Smyrna Airport
frigid
15°F
freezing
32°F
very cold
45°F
cold
55°F
cool
65°F
comfortable
75°F
warm
85°F
hot
95°F
sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.
Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F. Based on growing degree days alone, the first spring blooms at Smyrna Airport should appear around February 22, only rarely appearing before February 4 or after March 13. Solar EnergyThis section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation. 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 4.6 months, from April 14 to September 1, with an average daily incident shortwave energy per square meter above 5.8 kWh. The brightest month of the year at Smyrna Airport is June, with an average of 6.6 kWh. The darker period of the year lasts for 2.9 months, from November 10 to February 7, with an average daily incident shortwave energy per square meter below 3.1 kWh. The darkest month of the year at Smyrna Airport is December, with an average of 2.3 kWh.
TopographyFor the purposes of this report, the geographical coordinates of Smyrna Airport are 36.011 deg latitude, -86.512 deg longitude, and 505 ft elevation. The topography within 2 miles of Smyrna Airport contains only modest variations in elevation, with a maximum elevation change of 161 feet and an average elevation above sea level of 521 feet. Within 10 miles contains only modest variations in elevation (669 feet). Within 50 miles contains significant variations in elevation (1,736 feet). The area within 2 miles of Smyrna Airport is covered by artificial surfaces (40%), cropland (23%), trees (17%), and water (13%), within 10 miles by cropland (35%) and trees (34%), and within 50 miles by cropland (48%) and trees (44%). Data SourcesThis report illustrates the typical weather at Smyrna 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 PointSmyrna 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 Nashville International Airport, Bowling Green-Warren County Regional Airport, Outlaw Field, Fort Campbell U. S. Army Airfield, Glasgow Municipal Airport, Crossville Memorial Airport, Lovell Field, and Wayne County Airport. Other DataAll data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus. All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid. Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations. Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database . Time zones for airports and weather stations are provided by AskGeo.com . Maps are © OpenStreetMap contributors. DisclaimerThe information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands. We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. Please review our full terms contained on our Terms of Service page. |
