textproduct: Huntsville

KEY MESSAGES

Updated at 1118 AM CDT Sun Aug 2 2026

- Low to Medium chances (20-60%) for showers and thunderstorms are forecast each afternoon today through Wednesday. Slight lower chances of activity are expected Thursday and Friday (20-40%). - NWS Heat Risk highlights Moderate (Level 2 of 4) heat impacts across the Tennessee Valley late this week (Thursday through Saturday).

- Higher chances of showers and thunderstorms could return to the forecast on Saturday.

NEAR TERM

(Tonight) Issued at 238 PM CDT Sun Aug 2 2026

Not much change from setup earlier this morning. Mostly cloudy to cloudy skies have kept temperatures from climbing above the mid to upper 70s to around 81 degrees. Most of the scattered showers have remained closer to the upper low SW into NW Alabama and NE Mississippi so far today. This will slowly push east into the early evening hours before dissipating. Expect low to mid cloud cover to hang on though into the to just after midnight near and east of the I-65 corridor. Further west, clouds may lift and become mid/high cloud cover (or break up) a bit earlier. This and light or calm winds will likely produce a more pronounced threat of fog (possibly dense in some areas) in those areas. Lows should be a bit cooler dropping into the 65 to 70 degree range.

SHORT TERM

(Monday through Wednesday) Issued at 1118 AM CDT Sun Aug 2 2026

The weak upper low meanders to the southeast during the day on Monday. This should shift the mostly cloudy conditions and scattered showers slightly southeast with time as it does so. Again, due to cloud cover and possible scattered showers near and east of the I-65 corridor, temperatures should be below normal only climbing into the 80 to 85 degree range in those areas. Further west, some mid to upper 80s will be possible.

From Monday night through Tuesday, the upper low meanders over northern Georgia into eastern Tennessee. This will likely keep mostly cloudy conditions and some isolated to scattered showers over areas near and east of I-65. This should present a similar forecast during the day on Tuesday as well.

Tuesday night into Wednesday models continue to show a stronger upper ridge trying to build into the area from the west. This and an approaching longwave trough axis over the Upper Midwest does seem to change the synoptic pattern a bit and forces the upper low further to the north into the day on Wednesday. This will not change the overall forecast much near and east of the I-65 corridor. In those areas, still expect mostly cloudy conditions to linger with isolated to scattered showers possible. However, it will build more heat into NW Alabama with highs climbing back into the upper 80s to lower 90s. Low level moisture should start to increase some as well with dewpoints climbing back into the lower 70s. This will push heat index values back into the 95 to 99 degree range again in the afternoon.

LONG TERM

(Wednesday night through Sunday) Issued at 1118 AM CDT Sun Aug 2 2026

Cloud cover moves further off to the NE Wednesday night into Thursday as the upper low gets pulled further northeast into the approaching longwave trough axis and upper ridging builds a bit more into the area. This should warm things up to near or slightly above normal again with highs reaching the upper 80s to lower 90s across northern Alabama and southern middle Tennessee. Heat index values look to climb back to around 100 degrees in some areas in the afternoon. Overall though a break from clouds and rainfall is expected through Thursday night.

This will change on Friday it seems, as a weak cold front associated with a longwave trough axis aloft sinks southeast into the area. Due to the weak nature of the front, only isolated to scattered showers or thunderstorm activity is expected (very weak forcing). This trough axis stalls through the weekend over the area. This should keep the heat from getting out of hand. Better instability is expected to develop on Saturday along with better forcing along the front. This should increase shower and thunderstorm chances to between 30 and 60 percent in the afternoon. At this time shear looks too weak for any organized severe thunderstorm activity. Highs should remain in the upper 80s to lower 90s with heat index values climb to just over 100 degrees in the early afternoon hours.

AVIATION

(00Z TAFS) Issued at 655 PM CDT Sun Aug 2 2026

Light rain will continue to move through the area over the next few hours but should lessen overnight. The main concern for the TAFs will be the threat for dense fog tonight into early tomorrow. Reductions to MVFR are included in TEMPO groups for both terminals during the early morning hours, but IFR to LIFR conditions cannot be ruled out. Shower and thunderstorm activity is expected to remain east of both terminals on Monday, so did not include any weather impacts in the TAFs at this time.

HUN WATCHES/WARNINGS/ADVISORIES

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