The app this map came from
Weather Navigation carries the same radar and road-surface data on Apple CarPlay and Android Auto, with a weather-aware route planner, storm-cell tracking and radar that refreshes every two minutes over the US.
I-40 Tennessee Road Conditions
Radar and live pavement conditions on the 455 miles of I-40 in Tennessee — plus closures, road work and city-by-city weather across the state.
Updated Sep 15, 2026 3:48 AM UTC · Mostly dry
Lowest 71°F near Knoxville, Tennessee · Highest wind 8 mph near Knoxville, Tennessee
Use Weather Navigation for your next Road Trip
Interstate 40 crosses Tennessee for 455 miles — the longest stretch of I-40 in any state — running the full width of it from the Mississippi River at Memphis to the Pigeon River Gorge on the North Carolina line. It links all three of the state’s major cities and climbs the Cumberland Plateau between Nashville and Knoxville, where winter weather regularly separates the two ends of the drive.
- Road system: Interstate Highway System
- Length: 455 miles
- Runs from: Memphis (Arkansas line) to the Pigeon River Gorge (North Carolina line)
- Cities served: Memphis, Jackson, Nashville, Knoxville
Weather data from Sep 15, 2026 3:48 AM UTC
71°F
82°F
8 mph
29.97-30.16 inHg
Current I-40 in Tennessee Conditions by State
Tennessee I-40 in Tennessee road conditions
Dry
- Memphis 82°F · 2 mph wind · Dry
- Nashville 82°F · 4 mph wind · Dry
- Knoxville 76°F · 4 mph wind · Dry
I-40 crosses 455 miles of Tennessee, between the North Carolina line and the Arkansas line. That is 18% of I-40's 2,555 miles.
Inside Tennessee it meets I-65 and I-24 at Nashville, I-75 at Knoxville, and I-81.
By mile marker, I-40 passes Memphis 1 · Jackson 86 · Nashville 212 · Knoxville 391.
No full closures are reported on I-40 in Tennessee as of Sep 15, 2026 3:48 AM UTC, and no lane closures or roadworks either. Always check with the responsible state DOT before setting off.
| Place | Snow a year | Snow days | Freezing nights | Freeze–thaw days | First freeze | Last freeze | Days over 90°F |
|---|---|---|---|---|---|---|---|
| Memphis | 3.8" | 2.8 | 42.8 | 38.4 | Nov 16 | Mar 18 | 64.3 |
| Nashville | 6.3" | 6.2 | 70.8 | 63.8 | Nov 2 | Apr 6 | 40 |
| Knoxville | 6.5" | 4.2 | 67 | 62.2 | Nov 2 | Apr 4 | 31.4 |
NOAA 1991–2020 Climate Normals, from 3 weather stations in Tennessee. A dash is a figure that station does not report, not a zero.
Towns Along I-40 in Tennessee
From Memphis to Newport, with the position of each town measured along this stretch itself — counted from the Memphis end, not from a state milepost, so it will not match the numbers on the signs.
- 3 mi Memphis 4.2 mi off the road
- 42 mi Mason 4.5 mi off the road
- 85 mi Jackson 1.0 mi off the road
- 175 mi Dickson 3.1 mi off the road
- 191 mi Kingston Springs
- 213 mi Berry Hill 2.1 mi off the road
- 251 mi Watertown 4.9 mi off the road
- 290 mi Cookeville
- 345 mi Rockwood 1.2 mi off the road
- 368 mi Lenoir City 3.7 mi off the road
- 390 mi Knoxville
- 438 mi Newport
Places from the US Census Gazetteer and population estimates, both public domain; distances measured along this page's own route geometry.
Summaries fetched Sep 14, 2026 12:07 PM UTC
Memphis, TN weather
- Memphis, TN is currently under a heat advisory effective from 11:00 AM on September 14, 2026, until 7:00 PM on September 15, 2026
- The temperature is currently 77°F with a relative humidity of 88%
- The forecast indicates that the maximum feels-like temperature will reach 106°F in about 5 to 6 hours, which poses a moderate risk for outdoor activities
- Winds are coming from the southeast at 5 to 6 mph
- The atmospheric pressure is measured at 30.06 inHg, and visibility is clear at 9.0 miles
- The weather is sunny, and there is no precipitation expected at this time.
Nashville, TN weather
- In Nashville, TN, the current weather conditions are characterized by sunny skies with a temperature of 77°F and a relative humidity of 80%
- The wind is blowing from the east at a speed of 8 mph
- A heat advisory is in effect from 11:00 AM to 8:00 PM today, as the forecast maximum feels like temperature is expected to reach 98°F later in the day
- This advisory indicates a potential risk for outdoor activities due to high temperatures.
Knoxville, TN weather
- In Knoxville, TN, as of 8:07 AM on September 14, 2026, the weather is characterized by mist and fog, contributing to a visibility of approximately 9.3 miles
- The temperature is currently 70°F, with a relative humidity of 98%, indicating very humid conditions
- Winds are light, blowing from the east at about 1 mph
- The atmospheric pressure stands at 30.15 inHg
- There are no significant weather alerts at this time.
I-40 in Tennessee Road Weather FAQ
- Is Interstate 40 in Tennessee closed right now?
- No full closures are reported on I-40 in Tennessee. No lane closures or roadworks are reported either.
- What are I-40 in Tennessee road conditions today?
- The map on this page colors the route along I-40 in Tennessee by what is on the pavement right now — dry, wet, slush, snow or ice — from radar and surface data, last updated Sep 15, 2026 3:48 AM UTC. Right now temperatures run from 71°F to 82°F and the strongest wind is 8 mph.
- Where are Tennessee road closures reported officially?
- Tennessee's official traveler information service is smartway.tn.gov, and it is where closures and restrictions are reported.
- How often are I-40 in Tennessee road conditions updated?
- The road surface and weather layers are rebuilt whenever this page is opened with data more than ten minutes old, and refreshed on a schedule in between, so nothing here is more than about two hours old even on a road nobody has looked at. Closures and road blocks are re-imported from the state 511 feeds every fifteen minutes, and the written state-by-state summaries are refreshed daily. Every section on this page carries the time its data was fetched.
Weather Road Planner for car and mobile
The same live radar and road-surface data as this map, on your phone and on Apple CarPlay or Android Auto.
