textproduct: Huntsville

KEY MESSAGES

Updated at 227 PM CST Sat Nov 7 2026

- Low temperatures will fall into the mid to upper 30s tonight. A Frost Advisory has been issued for all counties in northern Alabama and southern middle middle Tennessee from midnight tonight through 7 AM CST on Sunday.

- Another night of widespread frost is possible Sunday night into early Monday morning.

NEAR TERM

(Rest of Today and Tonight) Issued at 1010 AM CST Sat Nov 7 2026

A fairly benign day across the Tennessee Valley, with mostly clear conditions ongoing (save for a few bands of cirrus from a disturbance to the west passing overhead). Breezy postfrontal winds around 10 MPH should reinforce this cooler, drier air mass. Thus, despite the ample sunshine, temperatures will struggle to climb out of the upper 50s to lower 60s this afternoon. High pressure should begin to build into the Tennessee Valley overnight, as winds gradually weaken to less than 5 MPH. The light winds, dry air mass, and clear conditions should allow for decent radiational cooling as lows will drop into the mid to upper 30s in most locations by early Sunday morning. A glance at model soundings denotes a strong inversion, indicating ridgetops will be a few degrees warmer than sheltered valleys. Additionally, given the dry air noted, this may keep our dewpoint depressions closer to 3 degrees or so for the entire night. Regardless, some patchy frost seems likely areawide in the lower elevation valleys. Given the patchy nature of this frost (with probs only reaching 40% in a couple counties -- and even that for only a couple hours), am inclined to hold off on an Advisory. A better setup may develop Sunday night into Monday morning. More on this in the section below.

SHORT TERM

(Sunday through Monday night) Issued at 1010 AM CST Sat Nov 7 2026

High pressure will continue to build into the Tennessee Valley early next week, promoting clear/dry conditions and fairly typical weather for early November. Plenty of sunshine during the day will allow for a decent warm-up as temperatures will warm into the mid to upper 60s on Sunday and the upper 60s to lower 70s on Monday. During the overnight hours, however, the clear/calm/dry conditions will create a good setup for radiational cooling. As a result, temperatures will drop into the low to mid 30s Sunday night (expect for the ridgetops which will be a few degrees warmer). This would give confidence in some areas of frost developing again and the potential need for a Frost Advisory (with the highest confidence being across northwest Alabama). Monday night looks a little warmer and with lows in the upper 30s to lower 40s, the frost impact for Monday night looks lower and much more isolated.

LONG TERM

(Tuesday night through Saturday) Issued at 227 PM CST Sat Nov 7 2026

Westerly flow in the low levels originating from the Gulf of America ahead of the approaching upper low moving into northern Louisiana should help to bring more moist and warmer air into the area. Some low level cumulus will likely develop, but looks overall like mostly sunny to partly cloudy conditions primarily. Highs on Tuesday with abundant sunshine and weak warm air advection upstream should climb back into the upper 60s to lower 70s.

This overall slow warming trend should continue through Wednesday, as the weakening upper low swings through the area. Expect primarily on and off partly cloudy conditions (with some very brief mostly cloudy conditions possible on Wednesday. Daytime highs shouldn't moderate much and climb back into the upper 60s to lower 70s. No precipitation is expected at this time given the dry boundary layer expected.

As a series of longwave trough axes move SSE through the upper level flow from the central Great Lakes region Wednesday night through Friday night. This will bring some showers south through northern Alabama Wednesday night into Thursday morning. For kept rain chances very low (20-35%). However, these rain chances could go up as we get closer to that period. Accumulations will be very light though, less than 0.20 inches in most guidance.

Much colder air will shift SSE with a strong surface high pushing southward from central Canada behind this precipitation Thursday into Thursday evening into northern Alabama and southern middle Tennessee. Highs are currently forecast to only climb into the upper 50s to lower 60s. Given the strength of cold air advection hinted at, guidance may not have caught up with how colder it will really be yet. Lows drop back into the lower to mid 30s again Thursday night in lower elevations. However, in higher elevations with a strong pressure gradient (very breezy conditions), lows should be warmer only dropping into the upper 30s to lower 40s. Some freezing temperatures might occur, but overall guidance suggests it might be more isolated in nature. Partly cloudy to mostly cloudy conditions will likely linger through Friday night, before decreasing significantly during the day on Saturday. Highs on Friday look to only reach the lower to mid 50s with continued cold air advection and cloud cover. Some models including the NBM clear things out though Friday night. If that happens, the colder NBM temperatures look on track and we may have a widespread hard freeze for much of the area.

During the day on Saturday into Sunday, an amplified upper ridge may try to start building into the area. This will likely lead to sunny conditions and some slightly warmer temperatures.

AVIATION

(18Z TAFS) Issued at 1043 AM CST Sat Nov 7 2026

VFR conditions will prevail through the period with a mostly clear sky. Breezy NW winds this afternoon will weaken to under 5 kts after sunset.

HUN WATCHES/WARNINGS/ADVISORIES

AL...Frost Advisory from midnight tonight to 7 AM CST Sunday for ALZ001>010-016.

TN...None.