Marine Weather and Tide Forecast for Oak Ridge, TN

DISCUSSION
Issued at 232 PM EDT Mon Oct 12 2026

The upper level trough has moved out of the region and a ridge is now over the Southeast into the Ohio Valley. At the surface, high pressure is over the Southeast. This pattern will hold through Thursday resulting in above normal temperatures and dry weather.
Temperatures will be about 10 to 13 degrees above normal with a strong ridge in place. With mostly clear skies tonight and calm winds, patchy fog development is likely. With residual ground moisture remaining in many places, fog may be widespread. Guidance is mixed on dense fog potential.

By late afternoon or evening on Thursday, low rain chances start to return to the northern higher terrain areas as an upper level trough moves through the Midwest and a surface low develops near IL/IN. The surface low will track northeast through the Great Lakes bringing a cold front through the Tennessee Valley on Friday. Rain chances will be low for most of the region with this front. The best rain chances will be in Southwest Virginia and the higher elevations.

Saturday and Sunday will be dry and much cooler as a trough moves over the Eastern U.S. On Saturday, highs will be mainly in the lower 60s throughout the Tennessee Valley which is about 10 degrees below normal. Westerly winds behind the cold front will be gusty late Friday through Saturday with gusts up to 30-35 mph possible at times.

AVIATION
(18Z TAFS)
Issued at 127 PM EDT Mon Oct 12 2026

There is potential for fog development in the early morning hours tomorrow. There is medium to high confidence that visibility restrictions will be widespread. There is low to medium confidence in patchy dense fog. TRI has the highest chance for dense fog. Otherwise, conditions will be dry and VFR.

PRELIMINARY POINT TEMPS/POPS
Chattanooga Airport, TN 60 87 61 88 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 59 85 61 86 / 0 0 0 0 Oak Ridge, TN 58 84 60 85 / 0 0 0 0 Tri Cities Airport, TN 54 81 57 83 / 0 0 0 0

MRX WATCHES/WARNINGS/ADVISORIES
NC...NONE.
TN...NONE.
VA...NONE.