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Average Weather in April in Memphis Tennessee, United States

In Memphis, the month of April is characterized by rising daily high temperatures, with daily highs increasing by 8°F, from 68°F to 77°F over the course of the month, and rarely exceeding 85°F or dropping below 55°F.

Daily low temperatures increase by 9°F, from 50°F to 58°F, rarely falling below 37°F or exceeding 68°F.

For reference, on July 20, the hottest day of the year, temperatures in Memphis typically range from 74°F to 91°F, while on January 16, the coldest day of the year, they range from 34°F to 50°F.

Average High and Low Temperature in April

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 hourly average temperatures for the quarter of the year centered on April. The horizontal axis is the day, 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 April

Average Hourly Temperature in April in Memphis12 AM4 AM8 AM12 PM4 PM8 PM12 AM18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030MarMaychillycoldcoolcomfortablewarm
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < chilly < 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.

Clouds

The month of April in Memphis experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 43% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 41% on April 15.

The clearest day of the month is April 15, with clear, mostly clear, or partly cloudy conditions 59% of the time.

For reference, on January 3, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 51%, while on August 15, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 70%.

Cloud Cover in April

Cloud Cover in April in Memphis0%10%20%30%40%50%60%70%80%90%100%18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030MarMayApr 1541%Apr 1541%Apr 144%Apr 144%Apr 3042%Apr 3042%overcastmostly cloudypartly cloudymostly clearclear
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. In Memphis, the chance of a wet day over the course of April is gradually increasing, starting the month at 34% and ending it at 37%.

For reference, the year's highest daily chance of a wet day is 39% on May 11, and its lowest chance is 22% on October 1.

Probability of Precipitation in April

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 month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during April in Memphis is increasing, starting the month at 4.6 inches, when it rarely exceeds 7.5 inches or falls below 2.4 inches, and ending the month at 5.2 inches, when it rarely exceeds 9.1 inches or falls below 2.0 inches.

The highest average 31-day accumulation is 5.2 inches on April 27.

Average Monthly Rainfall in April

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.

Sun

Over the course of April in Memphis, the length of the day is rapidly increasing. From the start to the end of the month, the length of the day increases by 1 hour, 0 minutes, implying an average daily increase of 2 minutes, 5 seconds, and weekly increase of 14 minutes, 32 seconds.

The shortest day of the month is April 1, with 12 hours, 35 minutes of daylight and the longest day is April 30, with 13 hours, 35 minutes of daylight.

Hours of Daylight and Twilight in April

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 latest sunrise of the month in Memphis is 6:46 AM on April 1 and the earliest sunrise is 37 minutes earlier at 6:09 AM on April 30.

The earliest sunset is 7:21 PM on April 1 and the latest sunset is 24 minutes later at 7:45 PM on April 30.

Daylight saving time is observed in Memphis during 2017, but it neither starts nor ends during April, so the entire month is in daylight saving time.

For reference, on June 21, the longest day of the year, the Sun rises at 5:46 AM and sets 14 hours, 32 minutes later, at 8:17 PM, while on December 21, the shortest day of the year, it rises at 7:04 AM and sets 9 hours, 47 minutes later, at 4:52 PM.

Sunrise & Sunset with Twilight and Daylight Saving Time in April

The solar day over the course of April. 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.

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.

The chance that a given day will be muggy in Memphis is rapidly increasing during April, rising from 3% to 14% over the course of the month.

For reference, on July 22, the muggiest day of the year, there are muggy conditions 88% of the time, while on January 14, the leasy muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in April

Humidity Comfort Levels in April in Memphis0%10%20%30%40%50%60%70%80%90%100%18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030MarMayApr 13%Apr 13%Apr 3014%Apr 3014%Apr 114%Apr 114%Apr 218%Apr 218%oppressiveoppressivemuggymuggyhumidhumidcomfortablecomfortabledrydry
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 Memphis is essentially constant during April, remaining within 0.2 miles per hour of 5.6 miles per hour throughout.

For reference, on April 1, the windiest day of the year, the daily average wind speed is 5.8 miles per hour, while on July 28, the calmest day of the year, the daily average wind speed is 3.3 miles per hour.

The highest daily average wind speed during April is 5.8 miles per hour on April 1.

Average Wind Speed in April

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
The hourly average wind direction in Memphis throughout April is predominantly from the south, with a peak proportion of 45% on April 30.

Wind Direction in April

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).

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 in Memphis is gradually increasing during April, rising by 0.9 kWh, from 5.4 kWh to 6.2 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in April

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 Memphis are 35.150 deg latitude, -90.049 deg longitude, and 236 ft elevation.

The topography within 2 miles of Memphis contains only modest variations in elevation, with a maximum elevation change of 121 feet and an average elevation above sea level of 238 feet. Within 10 miles also contains only modest variations in elevation (187 feet). Within 50 miles contains only modest variations in elevation (545 feet).

The area within 2 miles of Memphis is covered by artificial surfaces (68%) and water (29%), within 10 miles by artificial surfaces (53%) and cropland (24%), and within 50 miles by cropland (68%) and trees (17%).

Data Sources

This report illustrates the typical weather in Memphis year round, 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Memphis.

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

The stations contributing to this reconstruction are: Memphis International Airport (54%, 12 kilometers, southeast); West Memphis Municipal Airport (31%, 17 kilometers, west); and Millington, Millington Municipal Airport (15%, 28 kilometers, northeast).

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.