textproduct: Huntsville

KEY MESSAGES

Updated at 950 AM CST Sun Dec 7 2025

- Low to medium (30-50%) chances for rain tonight into early Monday morning.

- Subfreezing temperatures return Monday night before a gradual warming trend through midweek.

- Confidence is increasing in the potential of very cold conditions by next weekend.

NEAR TERM

(Rest of Today and Tonight) Issued at 950 AM CST Sun Dec 7 2025

Temperatures this morning as of 9am have warmed above freezing and with visibility also increasing across most of the Tennessee Valley the Freezing Fog advisory has ended. While there is still a few spots showing locally dense fog, it is not widespread enough for an advisory.

Satellite imagery shows a wide swath of low level stratus over most of northern AL and southern middle TN with the exception of portions of Franklin county TN, Jackson, and Dekalb counties. These low level clouds will likely stick around for much of the day, which will limit daytime heating. Weak WAA from southeasterly sfc flow will help, but will not be able to overcome the lack of sunshine. Therefore, expect afternoon highs this afternoon to struggle to climb above the mid to upper 40s.

As we head into tonight, a short wave trough will eject eastward across the Tennessee Valley pulling a cold front through the forecast area. This will spread light rain from west to east starting this evening and continuing through the overnight period. Low to medium (30-50%) chances of precip is expected with the greatest probabilities further to the south. Overall, not expecting much in accumulation with the current forecast only having between a few hundredths to around a tenth of an inch by Monday morning.

SHORT TERM

(Monday through Tuesday Night) Issued at 950 AM CST Sun Dec 7 2025

A longwave upper level trough will be positioned across much of the eastern third of the CONUS as we start the day on Monday. This will allow colder air to filter in post cold front, resulting in a chilly start to the new work week. Afternoon highs on Monday will only top out in the mid 40s, but with a tight pressure gradient during the day, expect winds to gust 15-20 mph at times making it feel a bit colder. The true colder airmass will be felt Monday night as the winds subside becoming light and combined with clear skies making for ideal radiational cooling conditions. Lows will drop into the mid to upper 20s.

The aformentioned upper level trough axis will shift eastward on Tuesday. This will bring some weak WAA in the form of sfc winds becoming southwesterly. While not expecting a warm day on Tuesday, we should return to the lower 50s, bringing an end to a several day streak of highs only in the 40s. Not nearly as cold Tuesday night as lows only drop into the mid 30s.

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

(12Z TAFS) Issued at 549 AM CST Sun Dec 7 2025

There have been no significant changes to previous aviation forecast reasoning, with IFR-level stratus and brief vsby reductions in lgt BR expected to continue at both terminals thru at least 16Z. Beyond this point, it is uncertain how much of an impact SSW winds will have in terms of mixing the boundary layer and forcing the stratus layer to rise, but we have not indicated this occurring prior to the arrival of lgt rain by 23Z/MSL and 1Z/HSV. In the wake of evening precipitation, winds will shift to NNW as a cold front crosses the region, with cigs perhaps returning to MVFR levels by the end of the TAF period.

HUN WATCHES/WARNINGS/ADVISORIES

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