Morristown, TN to Alexandria Bay, NY: 843 miles, 6 states, 258 numbered exits.
At 11 p.m. EDT, temperatures on I-81 run from 49°F near Marathon to 74°F near Roanoke, under mostly cloudy skies on average. Wind is light, gusting no higher than 22 mph anywhere on the road. Over the next 24 hours, rain is forecast on about 408 miles of it, the most, 0.37″, near Emory, VA.
Read from the National Weather Service’s NDFD forecast grid at 2.5 km, sampled every eight miles along the pavement (run 10/03 01Z). The page is rebuilt every hour.
| Where | State | Now | Sky | Next 24 hours |
|---|---|---|---|---|
| Mile 0 · Morristown, TNExit 1A-B · Asheville | TN | 69° | Partly cloudy | rain 0.27″ |
| Mile 40 · Baileyton, TNExit 36 · Baileyton / Greeneville | TN | 68° | Partly cloudy | rain 0.35″ |
| Mile 80 · Bristol, TNExit 5 · Lee Highway | VA | 67° | Mostly cloudy | rain 0.32″ |
| Mile 120 · Marion, VAExit 47 · Marion | VA | 67° | Partly cloudy | rain 0.31″ |
| Mile 160 · Pulaski, VAExit 89A · Hillsville | VA | 69° | Partly cloudy | rain 0.27″ |
| Mile 200 · Blacksburg, VAExit 128 · Elliston | VA | 73° | Partly cloudy | rain 0.23″ |
| Mile 240 · Buchanan, VAExit 168 · Arcadia | VA | 74° | Mostly cloudy | rain 0.26″ |
| Mile 280 · Staunton, VAExit 213 · US 11 North | VA | 67° | Mostly cloudy | rain 0.34″ |
| Mile 320 · Harrisonburg, VAExit 251 · Harrisonburg | VA | 67° | Overcast | rain 0.14″ |
| Mile 360 · Strasburg, VAExit 296 · Strasburg | VA | 68° | Overcast | rain 0.09″ |
| Mile 400 · Martinsburg, WVExit 12 · Charles Town / Shepherdstown / Winchester Av | WV | 66° | Mostly cloudy | Dry |
| Mile 440 · Chambersburg, PAExit 16 · Gettysburg / Chambersburg | PA | 65° | Overcast | Dry |
| Mile 480 · Harrisburg, PAExit 57 · Mechanicsburg | PA | 66° | Mostly cloudy | Dry |
| Mile 520 · Pine Grove, PAExit 100 · Pine Grove | PA | 63° | Mostly cloudy | Dry |
| Mile 560 · Hazleton, PAExit 143 · Hazleton | PA | 56° | Overcast | Dry |
| Mile 600 · Scranton, PAExit 187 · Milford / Mount Pocono / Carbondale | PA | 58° | Overcast | Dry |
| Mile 640 · Binghamton, NYExit 230 · Great Bend / Susquehanna | PA | 53° | Overcast | Dry |
| Mile 680 · Marathon, NYExit 39 · Marathon | NY | 50° | Partly cloudy | Dry |
| Mile 720 · Syracuse, NYExit 1A · South Salina Street / Brighton Avenue | NY | 54° | Mostly cloudy | Dry |
| Mile 760 · Richland, NYExit 125 · Pulaski | NY | 56° | Partly cloudy | Dry |
| Mile 800 · Watertown, NYExit 160 · Black River / Carthage | NY | 54° | Partly cloudy | Dry |
| Mile 819 · Alexandria Bay, NYExit 186 · De Wolf Point / Island Road | NY | 57° | Partly cloudy | Dry |