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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 Oct 9, 2026 3:13 AM UTC · Mostly dry
Lowest 61°F near Knoxville, Tennessee · Highest wind 6 mph near Knoxville, Tennessee
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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 Oct 9, 2026 3:13 AM UTC
61°F
75°F
6 mph
29.97-30.16 inHg
Conditions along I-40 in Tennessee
Tennessee road conditions & Tennessee 511
Dry
- Memphis 75°F · 1 mph wind · Dry
- Nashville 68°F · 0 mph wind · Dry
- Knoxville 65°F · 3 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 Oct 9, 2026 3:13 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 Oct 8, 2026 12:07 PM UTC
Memphis, TN weather
- Memphis, TN is currently experiencing an air quality alert that is in effect from 2:59 PM on October 7, 2026, until 5:30 PM on October 8, 2026
- The weather conditions at this time include a temperature of 56°F with a dew point of 55.8°F and a humidity level of 98%
- The wind is blowing from the east-southeast at approximately 0 mph
- The atmospheric pressure is measured at 30.06 inHg and visibility is clear at 10.0 miles
- Outdoor activities should be approached with caution due to the moderate air quality risk in the area.
Nashville, TN weather
- Current weather conditions in Nashville, TN indicate a mostly sunny day with a temperature of 61.5°F and a dew point of 56.7°F
- The humidity is high at 84%, contributing to a warm feel in the air
- Wind speeds are light, coming from the north at 0.1 mph
- The atmospheric pressure is measured at 29.9 inHg, and visibility is good at 9.9 miles
- There are no active weather alerts at this time, and precipitation is not expected.
Knoxville, TN weather
- In Knoxville, TN, the current weather is characterized by fog, resulting in reduced visibility at approximately 4.1 miles
- The temperature is 54.9°F with a dew point of 54.0°F, leading to a high humidity level of 97%
- Winds are calm, blowing from the west at around 1 mph
- The atmospheric pressure is at 30.12 inHg
- Overall, conditions are quite humid and foggy, which may impact travel and outdoor activities.
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 Oct 9, 2026 3:13 AM UTC. Right now temperatures run from 61°F to 75°F and the strongest wind is 6 mph.
- Where are Tennessee road closures reported officially?
- Tennessee's official traveler information service is SmartWay, at 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.
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