textproduct: Huntsville

KEY MESSAGES

Updated at 936 AM CDT Sat Aug 29 2026

- Dangerous heat will return early next week and will tend to intensify through the week with heat indices reaching the 100-105 degree range.

- There are low chances for thunderstorms each day mainly from Sunday afterward, and especially in higher terrain areas during the afternoons.

NEAR TERM

(Tonight) Issued at 121 PM CDT Sat Aug 29 2026

A warm, dry day across the Tennessee Valley with high pressure firmly in control of the weather. Any Cu that develops will quickly dissipate after sunset, with a clear sky and calm winds. Thus, it will be a good opportunity to view the full sturgeon moon outdoors in an otherwise tranquil night. Overnight lows in the upper 60s to lower 70s will be common.

SHORT TERM

(Sunday through Monday) Issued at 936 AM CDT Sat Aug 29 2026

The mid/upper ridge will build eastward into the region early next week and subsequently the heat dome will move east with it. As a result, a gradual warming trend will occur with at least Moderate (Level 2/4) heat impacts developing by Sunday and Monday. Ample sunshine will again push highs into the low to mid 90s, with 70s dewpoints pushing peak heat index values into the 100-105 degree range both days. As of this update, the coverage of heat indices at or above 105 degrees is still extremely limited and we have no current plans to issue any Heat Advisories at this time. However, if temperatures trend a little higher (especially by Monday) that could change. Thus, be sure to stay tuned for updates and always follow heat safety guidelines! Subsidence from the ridge should significantly limit cloud cover and convection, but a very low chance (10-15%) of a rogue storm will exist each afternoon.

LONG TERM

(Monday night through Friday) Issued at 850 PM CDT Fri Aug 28 2026

By the start of the long term, ridging will be centered over the TN Valley. This will be paired with high pressure over the eastern CONUS at the surface. The high pressure will work to keep rain chances low and set temps on a warming trend. Highs look to warm from the low 90s back to the high 90s by the end of the week. Surface high pressure will induce weak ESE flow which will gradually return dew points to the 70s. While we will have to keep and eye on trends, models currently keep dew points in the low 70s which will work in our favor to keep heat indices below Heat Advisory criteria (105F). Under ESE flow, dew points look highest in NE AL. As such, low chances (20% or less) for terrain enhanced showers are forecast each afternoon. Without any widespread forcing for clouds and rain, heat will be our primary concern through the long term forecast. Make sure to check back for updates and continue to practice proper heat safety.

AVIATION

(00Z TAFS) Issued at 555 PM CDT Sat Aug 29 2026

VFR conditions with light winds are forecast through the period.

CLIMATE

Issued at 555 PM CDT Sat Aug 29 2026

Moderate Risk for Much Above Normal Temperatures:

The Climate Prediction Center has included northern Alabama and southern Middle Tennessee in a Moderate Risk for Much Above Normal Temperatures for September 6th through the 8th. There is a 40-60% chance for temperatures above 95 degrees F and heat index values exceeding 105 degrees F during this period.

More information on the CPC U.S. Hazards Outlook can be found at: https://www.cpc.ncep.noaa.gov/products/predictions/threats/threats.php

HUN WATCHES/WARNINGS/ADVISORIES

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