textproduct: Huntsville

KEY MESSAGES

Updated at 304 AM CDT Sun Oct 18 2026

- Cooler temperatures will persist through tonight, before a warming trend takes shape early to mid week.

- Patchy frost may occur early this morning and early Monday morning in a few wind-sheltered locations across southern TN and northeast AL.

NEAR TERM

(Today) Issued at 304 AM CDT Sun Oct 18 2026

Clear/calm conditions are resulting in a cool, crisp early autumn morning across the Tennessee Valley, with 09z temperatures in the mid 40s in most locations. With high pressure building into the region today, the mostly sunny, clear, and calm conditions will continue. Ample sunshine will allow temperatures to climb into the mid to upper 60s in most locations by this afternoon. However, light northerly winds will continue to reinforce this cooler air mass.

SHORT TERM

(Sunday night through Tuesday) Issued at 1056 PM CDT Sat Oct 17 2026

While the upper air pattern won't change significantly during the short term period, upper ridging will center more over the eastern CONUS and will bring warming temperatures to the Tennessee Valley. The good news is that without the moisture advection from the Gulf, the heat will feel a lot less oppressive without the humidity we have seen in recent weeks. Afternoon highs will rise into the low/mid 70s Monday and then into the mid/upper 70s on Tuesday. Clear skies and light winds will allow for good radiational cooling, allowing for overnight lows in the upper 30s to mid 40s.

LONG TERM

(Tuesday night through Saturday) Issued at 1056 PM CDT Sat Oct 17 2026

Upper level ridging will persist over the Southeast to begin the long term period; however, synoptic guidance suggests that the upper trough over the eastern seaboard will amplify by late week and attempt to push westward into the South. Although, uncertainty remains if this feature will push far enough west to have much of an effect on the local area. This is due to the stout ridge over the central CONUS that looks to be pushed eastward over our region Friday into Saturday by a progressive trough over the western CONUS. Meanwhile, surface high pressure looks to largely maintain its hold over much of the eastern CONUS through the first part of next weekend. Overall, with continued subsidence from surface high pressure and proximity of upper ridging, the current forecast remains devoid of rain chances through at least early next weekend. In addition, the Fall-like weather continues with forecast highs in the mid to upper 70s and lows mainly in the mid to upper 40s.

AVIATION

(12Z TAFS) Issued at 546 AM CDT Sun Oct 18 2026

VFR conditions will prevail through the period with light NNE winds and a mostly clear sky.

HUN WATCHES/WARNINGS/ADVISORIES

AL...None. TN...None.