textproduct: Huntsville

KEY MESSAGES

Updated at 855 PM CST Sat Dec 6 2025

- Low to medium chances of fog tonight with the potential for some to see it become freezing fog as temperatures drop to freezing below in several spots. - Low to medium (20-40%) chances of periodic light rain late Sunday afternoon through Monday morning.

- Colder temperatures return early next week with sub-freezing lows Monday night, followed by a warming trend through midweek.

NEAR TERM

(Tonight) Issued at 855 PM CST Sat Dec 6 2025

We had another below normal day where highs only got into the lower 40s when norms are in the upper 50s for early December. Low to medium chances for patchy fog is still expected tonight while the sky is pretty much clear. Obs are already observing light fog in a few locations. Will monitor trends to see if coverage there become dense, but coverage should be limited by cloud cover moving in after midnight or so. However, with temps falling into the lower 30s, fog in place will become freezing fog. Be sure to travel safely in fog, slow down and leave extra space between vehicles. Lowered overnight lows by a degree or two into the upper 20s to lower 30s based off of ob trends. Might have not gone low enough so will monitor obs to see if further adjustment is needed.

SHORT TERM

(Sunday through Tuesday night) Issued at 855 PM CST Sat Dec 6 2025

Any lingering patchy fog/freezing fog issues will dissipate with sunrise. We will warm up to lower 50s on Sunday, much closer to seasonal values that we have been. That unfortunately, will be short lived. The trough's who center is located up in the Hudson Bay will amplify on Sunday and the associated sfc low in the eastern Great Lakes will pull a cold front into the region. The cold front will enter the TN Valley Sunday night and bring low to medium chances (20-40%) of rainfall with it that lingers into Monday. Lows Sunday night will be in the upper 30s.

Behind the frontal passage, high pressure will build in and funnel in the colder air with a northwesterly wind. Drier air will decrease cloud cover, but highs on Monday will be back in the 40s. Monday night will be 10-15 degrees cooler than the night before with lows in the mid 20s under mostly clear skies. High pressure will shift eastward on Tuesday, allowing southerly flow to return. This will help daytime highs get back into the lower 50s.

LONG TERM

(Wednesday through Saturday) Issued at 855 PM CST Sat Dec 6 2025

Wednesday may be the best day of the entire forecast as high pressure at the surface will promote dry and mostly sunny conditions. As a result, high temperatures will make a run at the 60 degree mark in some locations by the afternoon. A fast-moving trough over the Great Lakes will attempt to push a cold front south toward the region from the Ohio Valley Wednesday evening into Wednesday night. This front will probably struggle to make it all the way into the area, but a secondary shortwave will interact with this feature and generate some low chances (20-40%) chances for rain showers Thursday and Thursday night. In wake of this system, a cooler, drier air mass will settle into the area by Friday.

A broad upper-trough situated over southern Ontario will become the dominant weather feature over the eastern CONUS late this week into the weekend. Several subtle shortwaves will traverse this feature, bringing additional reinforcing shots of cooler air into the region. Highs on Friday will peak in the mid to upper 40s, with overnight lows dropping into the lower 20s. Saturday looks to be even chillier as high temperatures will struggle to climb above the 40 degree mark -- with lows Saturday night in the Teens being common. Saturday night we may need to watch wind chills as readings in the single digits in a few locations may occur along the higher terrain. Regardless, it's important to recognize that a spill of colder weather and below normal temperatures will be favored late next week into the following week for mid-December. Make sure you review common sense safety rules for cold weather and make sure you're prepared.

AVIATION

(06Z TAFS) Issued at 1217 AM CST Sun Dec 7 2025

Clear skies and calm winds have permitted development of lgt FZBR/FZFG across the region early this morning, with TEMPO groups included thru 8Z for MVFR vsby reductions at HSV and IFR vsby reductions at MSL. However, a layer of very low/overcast stratus will quickly spread northward over the next few hours, providing a transition to IFR cigs at the terminals by 8-9Z. The stratus layer may gradually lift to MVFR-levels during the late morning hours, but should descend once again tomorrow evening as lgt RA begins to overspread the region. Sfc winds will remain calm thru 15Z and SSE around 5 kts thereafter.

HUN WATCHES/WARNINGS/ADVISORIES

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