Memorial Day weekend in Tennessee usually brings warm afternoons, mild nights, and a real chance of scattered showers or storms. You’ll typically see daytime highs in the upper 70s to mid-80s, and the humidity starts creeping up as summer gets closer.
Rain isn’t a sure thing, but late May often mixes sunshine with passing showers, so planning ahead really helps.
Weather patterns shift across the state, so what you get in Memphis might look totally different from Knoxville or the Smokies. West Tennessee usually feels hotter and stickier, while the eastern mountains stay cooler and see rain more often.
Knowing the regional differences can make or break your plans.
If you’re heading outside for cookouts, lake trips, or hiking, Memorial Day weekend usually offers enough warm weather for summer fun. Still, keep an eye on the sky—quick afternoon storms can roll through, but mornings and evenings are often nice for being outdoors.
Typical Memorial Day Weather in Tennessee
Memorial Day in Tennessee usually means warm afternoons, mild nights, and a fair shot at scattered rain. You’ll get early summer vibes, with temps rising into the 70s or 80s and humidity starting to show up.
Average High and Low Temperatures
By late May, Tennessee leaves behind spring’s chill. Afternoon highs often hit the upper 70s to mid-80s°F, depending on where you are. Memphis often feels warmer, with highs near 83–85°F, while Knoxville and Nashville usually top out around 78–82°F.
Morning lows feel comfortable, generally in the upper 50s to mid-60s°F. That makes evenings and early mornings pretty pleasant for outdoor stuff.
Nights rarely get cold, so you can plan outdoor gatherings without worrying about chilly air. The jump from spring to summer means the heat can sneak up on you during the day.
If you don’t love hot weather, try to get outside earlier or wait until evening.
Typical Rainfall and Precipitation Chances
Rain shows up pretty often in late May, and Memorial Day usually lands during one of those unsettled stretches. Nashville averages about 4.4 inches of rain in May, with Memphis and Knoxville not far behind. May sits among Tennessee’s wetter months.
You’ll see 9–12 days of measurable rainfall on average for the month. For the holiday itself, the chance of rain on any given day hovers around 30–40%, but honestly, it changes every year.
Thunderstorms can pop up, especially in the afternoon and evening. These storms don’t usually last long but can dump a lot of rain in a hurry.
If you’re planning outdoor events, it’s a good idea to have a backup spot indoors or under cover.
Humidity and Comfort Levels
By late May, humidity starts making itself known, especially out west. Memphis gets muggy first, with dew points above 65°F, while Knoxville and Nashville also get sticky but not quite as bad.
This extra moisture can make it feel warmer than the thermometer says. Afternoon activities might feel a bit uncomfortable if you’re baking in the sun.
Evenings get easier as temps drop, but the humidity doesn’t always let up. Light clothing and plenty of water help if you’re outside for long stretches.
Fans or shaded spots are a lifesaver when the air gets thick.
Regional Weather Variations Across Tennessee
Tennessee’s geography makes the weather flip from one end of the state to the other. Elevation, the Mississippi River, and the Appalachian Mountains all play a part in how warm, humid, or rainy Memorial Day can get.
East Tennessee Conditions
East Tennessee sits in the Appalachian region, so higher elevations keep late May temps a bit cooler. In the valleys, you’ll see highs in the upper 70s to low 80s °F, while the mountains often stay in the 60s.
Nights cool down fast, often dropping into the 50s. Rain chances run high because Gulf air hits the mountains and stirs things up.
Afternoon showers or quick thunderstorms can pop up, especially in the Smokies. These storms usually don’t last long but can dump a lot of rain.
Humidity goes up compared to spring, but it’s not as rough as in the west. If you’re hiking or camping, get ready for the weather to change on a dime.
Light rain gear and layers are smart for unpredictable days.
Middle Tennessee Climate Patterns
Middle Tennessee, including Nashville, warms up fast by late May. Daytime highs often land in the low to mid-80s °F, and nights stay in the 60s.
The rolling hills and river valleys trap humidity, so even moderate temps can feel muggy. Rainfall comes often—May ranks as one of the wettest months.
You might run into scattered thunderstorms in the afternoon. These storms can bring quick gusty winds and heavy rain, but they usually pass fast.
If you’re planning an outdoor gathering, expect warm afternoons and the possibility of sudden showers. Shade, water, and flexible plans make it easier to roll with the weather.
West Tennessee Weather Differences
West Tennessee, including Memphis, gets hit hardest by Gulf moisture and the Mississippi River. By Memorial Day, highs often climb into the upper 80s °F, and nights stay warm, usually in the upper 60s to low 70s.
It’s the stickiest part of the state. Rain chances run high, and late spring storms come in from the west.
Thunderstorms can develop quickly and sometimes cover big areas, unlike the more isolated mountain showers out east. These storms may bring heavy rain, lightning, and short bursts of strong wind.
If you’re outside here, plan for hot, muggy weather. Light, breathable clothes and access to shade are key.
Keep an eye on the forecast because storms can mess with travel or outdoor plans.
Day-to-Day Weather Trends During Memorial Day Weekend
Most years, you’ll get warm afternoons and mild nights, but rain and storms could interrupt your outdoor plans. The mix of heat, humidity, and shifting weather can change things up more than you’d expect.
Temperature Fluctuations Over the Weekend
During Memorial Day weekend, daytime highs usually run from the upper 70s to mid-80s°F. Some years, it even pushes into the low 90s, especially out west where the humidity builds fast.
Nights generally cool off into the mid-50s to mid-60s°F, so evenings feel nicer. Saturday sometimes feels a bit cooler than Sunday or Monday, since warmer air tends to roll in as the weekend goes on.
By Memorial Day itself, you might notice stickier air and warmer lows, especially in central and southern parts of the state.
If you’re planning outdoor stuff, remember valleys and higher elevations can be very different. The Smoky Mountains might be 10–15 degrees cooler than Nashville or Memphis at the same time.
Packing layers makes sense.
Rainfall Patterns and Storm Likelihood
Rain is pretty common around the holiday, and Tennessee often sees showers on at least one of the three days. Afternoon thunderstorms show up the most, especially in central and eastern areas where heat and moisture build.
Storms can form fast and bring brief heavy downpours, gusty winds, and lightning. Severe weather isn’t as likely as in April, but strong storms with hail or damaging winds do happen some years.
The risk goes up if a stalled front hangs around. Rainfall averages about 0.15 to 0.25 inches per day across the state for late May, but totals can swing wildly.
Some weekends get by with just a sprinkle, while others get several inches of rain. If you’re traveling, expect road delays during afternoon and early evening storms.
Sunshine and Daylight Hours
Late May in Tennessee gives you long daylight hours and more sunshine as summer gets closer. You’ll get brighter days and more sun, but clouds can still show up depending on where you are.
Expected Hours of Sunshine
By Memorial Day, Tennessee averages 9 to 10 hours of direct sunlight per day in places like Memphis, Nashville, and Knoxville. That’s almost the seasonal peak, with June bringing the longest days.
Daylight itself lasts around 14 hours, so you have plenty of time for outdoor plans. Sunrise comes early, often before 6:00 a.m., and sunset stretches past 8:00 p.m.
These long days are perfect for travel, events, and anything outside. The sun’s angle is pretty high, reaching about 75° above the horizon at midday near the solstice.
Sunlight feels strong, so shade is your friend during the afternoon. If you’re outside, this is peak UV time, so don’t forget sunscreen.
Cloud Cover Trends
Even with lots of sunshine, cloud cover sticks around in late May. Tennessee skies are about two-thirds clear on average, with the rest of the time partly cloudy or overcast.
You’ll often see mornings start sunny, then afternoon clouds build up. That’s just how humid late spring goes—warm air rises and forms scattered clouds.
Rain isn’t as heavy as in early spring, but passing showers and storms still pop up, mostly in the afternoon.
These usually move through fast, so you rarely lose an entire day of sunshine. If you’re planning to be outdoors, expect a mix: mostly sunny skies, but clouds and a shower or two aren’t out of the question.
Honestly, late May offers some of the most reliable weather for enjoying Tennessee’s outdoors.
Weather Impacts on Outdoor Activities
Late May in Tennessee brings a mix of warm, humid days and spells of rain or storms. These changes can really shape how you plan outdoor gatherings, recreation, and travel during the holiday weekend.
Best Times for Outdoor Events
You’ll usually find the best weather in the mornings and early afternoons. Temps often start in the 70s, then climb into the 80s as the day goes on.
Humidity rises with the sun, so outdoor activities feel hotter in the afternoon. Rain chances also go up later in the day because warm air fuels scattered showers and storms.
If you want to host a picnic, hike, or family get-together, aim for before mid-afternoon to dodge the rain. Sheltered spaces like covered patios or pavilions keep your plans flexible.
They let you keep going if a quick shower rolls through. For bigger events, it’s smart to have an indoor backup plan.
Quick tips for planning:
- Morning hours: Cooler temps, lower storm risk
- Afternoon: Higher chance of showers, especially central and east
- Evening: Usually humid, with a few storms possible
Weather-Related Travel Considerations
Holiday weekends mean heavy traffic on Tennessee highways, and wet weather just slows things down more. Rain cuts visibility and raises the risk of hydroplaning, especially on I‑40 and I‑75.
Give yourself extra time if storms are in the forecast. Localized flooding can show up in low spots after heavy rain.
If you’re driving through rural or mountain areas, watch for water on the road and don’t cross flooded sections. Air travel also gets affected when storms hit around Nashville, Memphis, or Knoxville airports.
Even brief storms can mess up flight schedules and cause longer waits.
Travel checklist:
- Check radar before you leave
- Build in extra time
- Watch for flash flood alerts in valleys and near rivers
- Monitor your flight status if you’re flying
Tips for Preparing for Memorial Day Weather
Late May in Tennessee brings warm afternoons, humid air, and a real shot at scattered showers or storms. You’ll enjoy the holiday more if you plan for both sunshine and sudden rain.
Packing and Clothing Recommendations
Pack light, breathable clothing, since daytime highs usually land in the upper 70s to mid-80s. I’d go with cotton or moisture-wicking fabrics—they just feel better in humid weather.
Bring a light jacket or sweater, too. Mornings and evenings can get a bit chilly, sometimes dropping into the 60s.
Footwear definitely matters if the ground gets wet. I always pick closed-toe shoes or water-resistant sandals for longer stretches outdoors. Flimsy flip-flops? Not a great idea for grassy or muddy spots.
Toss a compact umbrella or a lightweight rain jacket in your bag. They barely take up any space, but you’ll be glad to have them if showers pop up. I also like to keep a small cooler with cold water handy, just to stay hydrated in that warm, sticky weather.
If you’re heading to outdoor gatherings, don’t forget sunscreen with at least SPF 30 and some insect repellent. Tennessee’s mix of sun and humidity can really crank up your sunburn risk and—let’s be honest—mosquitoes love it, especially near lakes or rivers.
Safety Tips for Rainy Conditions
Rain showers and storms usually pass fast, but they can still throw your plans off. When you drive, slow down on wet roads, and keep more distance between cars.
Tennessee roads get slick even after a light rain. It’s honestly surprising how quickly things can get slippery.
If a storm pops up, don’t hang out under tall trees or in open fields. Lightning is a real risk, especially in late spring.
Head indoors or get inside your car until the storm moves on. That’s just safer.
Outdoor cooking or grilling gets tricky when it’s wet. Set your grill on dry, stable ground, and keep it away from any low branches.
Use waterproof matches or stash your lighter in a sealed container just in case.
Planning to camp? Pick a spot on higher ground for your tent.
Low areas fill with water fast, and nobody wants to wake up in a puddle. Toss a tarp under your tent for extra protection from moisture.