textproduct: Huntsville

KEY MESSAGES

Updated at 1019 AM CST Mon Dec 15 2025

- Sub-freezing overnight temperatures continue tonight.

- Medium to high chances for showers and thunderstorms return on Thursday.

NEAR TERM

(Rest of Today and Tonight) Issued at 1019 AM CST Mon Dec 15 2025

A very cold start to the day with morning lows in the low to mid teens across the area. The coldest observation was 10F up in Lynchburg TN. High pressure sits overhead which has resulted in ample sunshine, but CAA continues with northerly flow aloft limiting the rate of warming this morning. Temperatures as of 10 am are still below freezing, but should finally rise above by around lunchtime, ending around a 36 hr run of sub-freezing conditions. The good news is that winds are light compared to yesterday so it does not feel nearly as cold outside. By late this afternoon, temperatures should peak in the lower 40s.

Another cold night is forecast tonight. With a very dry airmass in place, temperatures after sunset will plummet quickly down into the low to mid 20s. Winds will be light this evening so wind chills are not expected to be much colder than the actual temperature. Therefore, no cold weather products are needed at this time. Regardless it will still be chilly tonight so bundle up in multiple layers if heading outside.

SHORT TERM

(Tuesday through Wednesday Night) Issued at 1019 AM CST Mon Dec 15 2025

As we head towards the middle of the work week, high pressure will remain situated across most of the Southeast. The deep trough that brought the Arctic airmass in this weekend will finally shift east of the local forecast area allowing for upper level ridging to push in from the west. This will result in a gradual warming trend with afternoon highs on Tuesday in the lower 50s and then the mid to upper 50s on Wednesday. With the sfc flow becoming more southerly and mid level flow more westerly, expect some moisture advection. This will help keep the overnight lows from dropping below freezing with the temperatures Tuesday night dipping down into the mid 30s and only the lower 40s on Wednesday night.

LONG TERM

(Thursday through Sunday) Issued at 934 PM CST Sun Dec 14 2025

A stout upper trough looks to traverse the Mississippi River Valley Thursday afternoon and move into the Ohio and Tennessee valleys Thursday evening. Surface high pressure will quickly push east over the Atlantic by midweek as a low pressure system develops over the Plains and swings up into the Great Lakes region early Thursday. A couple of days of return flow over the Tennessee Valley will help temperatures increase into the lower 60s with dew points in the 50s by Thursday. Guidance indicates that the greatest dynamics associated with the low pressure system will be to our north; however, models do show ample bulk shear and a stout upper jet over northern Alabama and southern middle Tennessee. A big question is going to be regarding instability, the energy for storms. Will there be enough instability, especially surface-based, for severe storms? Currently, guidance indicates modest instability and most being elevated. Therefore, at this point, general thunderstorm development is certainly plausible Thursday/Thursday night, along with medium to high chances (40-80%) of showers. We'll need to continue to monitor trends for the potential of stronger storms, but confidence is low at this time. Stay tuned for updates!

Once the cold front (associated with the aforementioned system) progresses south of the local area late Thursday night/early Friday, cooler air will filter into the region. Highs are forecast to top out in the 40s on Friday with lows in the lower to mid 30s. This cool down won't last long, as another cold front approaches the Tennessee Valley Saturday into Sunday. A warm up is therefore anticipated (highs in the lower 60s and lows in the 40s), along with our next chance at rain Saturday night through Sunday.

AVIATION

(18Z TAFS) Issued at 1120 AM CST Mon Dec 15 2025

VFR conditions with light winds and clear skies are forecast to continue through the TAF period.

HUN WATCHES/WARNINGS/ADVISORIES

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