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Average Weather in South Carthage Tennessee, United States

In South Carthage, 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 89°F and is rarely below 14°F or above 95°F.

Climate Summary

coldcoolwarmhotwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDec68%68%43%43%clearovercastprecipitation: 4.7 inprecipitation: 4.7 in2.9 in2.9 inmuggy: 85%muggy: 85%0%0%drydrytourism score: 6.1tourism score: 6.10.70.7
Click on each chart for more information.

Based on the tourism score, the best times of year to visit South Carthage for warm-weather activities are from mid May to late June and from late July to early October.

Temperature

The hot season lasts for 3.9 months, from May 25 to September 20, with an average daily high temperature above 81°F. The hottest day of the year is July 21, with an average high of 89°F and low of 69°F.

The cold season lasts for 3.0 months, from November 29 to February 28, with an average daily high temperature below 56°F. The coldest day of the year is January 29, with an average low of 30°F and high of 47°F.

Average High and Low Temperature

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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

Average Hourly Temperature in South CarthageJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMvery coldvery coldvery coldcoldcoldcoolcoolcomfortablewarmhot
The average hourly temperature, color coded into bands: 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 shaded overlays indicate night and civil twilight.

Polýkastro, Greece (5,450 miles away) is the far-away foreign place with temperatures most similar to South Carthage (view comparison).

Clouds

In South Carthage, 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 in South Carthage begins around June 13 and lasts for 5.1 months, ending around November 17. On September 21, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 68% of the time, and overcast or mostly cloudy 32% of the time.

The cloudier part of the year begins around November 17 and lasts for 6.9 months, ending around June 13. On January 3, the cloudiest day of the year, the sky is overcast or mostly cloudy 57% of the time, and clear, mostly clear, or partly cloudy 43% of the time.

Cloud Cover Categories

Cloud Cover Categories in South CarthageclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Sep 2168%Sep 2168%Jan 343%Jan 343%Jun 1355%Jun 1355%Nov 1756%Nov 1756%clearmostly clearpartly cloudymostly cloudyovercast
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in South Carthage varies throughout the year.

The wetter season lasts 5.1 months, from March 17 to August 21, with a greater than 33% chance of a given day being a wet day. The chance of a wet day peaks at 42% on June 30.

The drier season lasts 6.9 months, from August 21 to March 17. The smallest chance of a wet day is 23% on October 15.

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 42% on June 30.

Daily Chance of Precipitation

Daily Chance of Precipitation in South CarthagewetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jun 3042%Jun 3042%Oct 1523%Oct 1523%Jan 130%Jan 130%Mar 1733%Mar 1733%Aug 2133%Aug 2133%rainsnowmixed
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

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. South Carthage experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year in South Carthage. The most rain falls during the 31 days centered around December 3, with an average total accumulation of 4.7 inches.

The least rain falls around August 23, with an average total accumulation of 2.9 inches.

Average Monthly Rainfall

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 liquid-equivalent snowfall.

Snowfall

The sliding 31-day liquid-equivalent quantity of snowfall in South Carthage 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

Average Liquid-Equivalent Monthly Snowfall in South CarthagesnowJanFebMarAprMayJunJulAugSepOctNovDec0 in1 in2 in3 in4 in5 inFeb 10.2 inFeb 10.2 inJul 90.0 inJul 90.0 inDec 200.1 inDec 200.1 inMar 40.1 inMar 40.1 in
The average liquid-equivalent 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.

Sun

The length of the day in South Carthage varies significantly over the course of the year. In 2017, the shortest day is December 21, with 9 hours, 41 minutes of daylight; the longest day is June 20, with 14 hours, 38 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight in South CarthageJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 6 minMar 2012 hr, 6 minMar 2014 hr, 38 minJun 2014 hr, 38 minJun 2012 hr, 8 minSep 2212 hr, 8 minSep 229 hr, 41 minDec 219 hr, 41 minDec 21nightnightday
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 5:25 AM on June 13, and the latest sunrise is 1 hour, 44 minutes later at 7:09 AM on November 4. The earliest sunset is at 4:28 PM on December 6, and the latest sunset is 3 hours, 37 minutes later at 8:05 PM on June 28.

Daylight saving time (DST) is observed in South Carthage during 2017, starting in the spring on March 12, lasting 7.8 months, and ending in the fall on November 5.

Sunrise & Sunset with Twilight and Daylight Saving Time

Sunrise & Sunset with Twilight and Daylight Saving Time in South CarthageJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 135:25 AMJun 135:25 AM8:05 PMJun 288:05 PMJun 28Dec 64:28 PMDec 64:28 PM7:09 AMNov 47:09 AMNov 4Mar 12DSTMar 12DSTDSTNov 5DSTNov 5daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2017. 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.

Humidity

We 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.

South Carthage experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 4.4 months, from May 14 to September 27, during which time the comfort level is muggy, oppressive, or miserable at least 21% of the time. The muggiest day of the year is July 24, with muggy conditions 85% of the time.

The least muggy day of the year is February 11, when muggy conditions are essentially unheard of.

Humidity Comfort Levels

Humidity Comfort Levels in South CarthagemuggyJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Feb 110%Feb 110%85%Jul 2485%Jul 24May 1421%May 1421%Sep 2721%Sep 2721%oppressiveoppressivemuggymuggydrydryhumidhumidmiserablemiserablecomfortablecomfortable
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

This 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 in South Carthage experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 6.6 months, from October 26 to May 13, with average wind speeds of more than 6.0 miles per hour. The windiest day of the year is February 25, with an average hourly wind speed of 7.7 miles per hour.

The calmer time of year lasts for 5.4 months, from May 13 to October 26. The calmest day of the year is July 30, with an average hourly wind speed of 4.2 miles per hour.

Average Wind Speed

Average Wind Speed in South CarthagewindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph1 mph2 mph3 mph4 mph5 mph6 mph7 mph8 mph9 mph10 mph11 mph12 mphFeb 257.7 mphFeb 257.7 mphJul 304.2 mphJul 304.2 mphOct 266.0 mphOct 266.0 mphMay 136.0 mphMay 136.0 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction in South Carthage varies throughout the year.

The wind is most often from the west for 1.6 weeks, from July 15 to July 26, with a peak percentage of 33% on July 15. The wind is most often from the south for 12 months, from July 26 to July 15, with a peak percentage of 38% on January 1.

Wind Direction

Wind Direction in South CarthageSWSJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%westsoutheastnorth
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 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 Visit

To characterize how pleasant the weather is in South Carthage 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 South Carthage for general outdoor tourist activities are from mid May to late June and from late July to early October, with a peak score in the first week of September.

Tourism Score

Tourism Score in South Carthagebest timebest timeJanFebMarAprMayJunJulAugSepOctNovDec02468106.16.10.70.75.75.75.25.2 precipitationprecipitationcloudscloudstemperaturetemperaturetourism score
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 South Carthage for hot-weather activities is from mid June to early September, with a peak score in the second week of August.

Beach/Pool Score

Beach/Pool Score in South Carthagebest timeJanFebMarAprMayJunJulAugSepOctNovDec02468105.85.80.00.0 precipitationprecipitationcloudscloudstemperaturetemperaturebeach/pool score
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).

Methodology

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.

Growing Season

Definitions 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 in South Carthage typically lasts for 6.7 months (207 days), from around April 3 to around October 27, rarely starting before March 14 or after April 22, and rarely ending before October 9 or after November 14.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season in South Carthagegrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 350%Apr 350%Oct 2750%Oct 2790%Apr 2290%Apr 2290%Oct 990%Oct 910%Mar 1410%Mar 1410%Nov 1410%Nov 140%Dec 170%Dec 17Jul 16100%Jul 16100%freezingvery coldcoldcomfortablewarmhotcoolfrigid
The percentage of time spent in various temperature bands: 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 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 in South Carthage should appear around February 26, only rarely appearing before February 7 or after March 16.

Growing Degree Days

The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

This 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 4.5 months, from April 17 to September 2, with an average daily incident shortwave energy per square meter above 5.7 kWh. The brightest day of the year is June 20, with an average of 6.6 kWh.

The darker period of the year lasts for 2.9 months, from November 10 to February 8, with an average daily incident shortwave energy per square meter below 3.1 kWh. The darkest day of the year is December 24, with an average of 2.2 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in South CarthagebrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWhJun 206.6 kWhJun 206.6 kWhDec 242.2 kWhDec 242.2 kWhApr 175.7 kWhApr 175.7 kWhSep 25.7 kWhSep 25.7 kWhNov 103.1 kWhNov 103.1 kWhFeb 83.1 kWhFeb 83.1 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of South Carthage are 36.242 deg latitude, -85.952 deg longitude, and 571 ft elevation.

The topography within 2 miles of South Carthage contains significant variations in elevation, with a maximum elevation change of 518 feet and an average elevation above sea level of 577 feet. Within 10 miles also contains significant variations in elevation (781 feet). Within 50 miles contains significant variations in elevation (1,696 feet).

The area within 2 miles of South Carthage is covered by cropland (39%), trees (35%), and artificial surfaces (24%), within 10 miles by trees (58%) and cropland (35%), and within 50 miles by trees (48%) and cropland (45%).

Data Sources

This report illustrates the typical weather in South Carthage, 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in South Carthage.

For each station, the records are corrected for the elevation difference between that station and South Carthage 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 South Carthage is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between South Carthage and a given station.

The stations contributing to this reconstruction are: Upper Cumberland Regional Airport (41%, 43 kilometers, southeast); Smyrna Airport (29%, 57 kilometers, southwest); Glasgow Municipal Airport (15%, 88 kilometers, north); and Bowling Green-Warren County Regional Airport (15%, 91 kilometers, northwest).

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , 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 aiports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

Disclaimer

The 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.