textproduct: Jackson
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
KEY MESSAGES
- Dangerous heat stress will persist across the forecast area this week.
- Rain chances begin increasing northward Thursday, with chances expected areawide Friday through the Labor Day weekend.
DISCUSSION
Issued at 123 PM CDT Tue Sep 1 2026
Tonight through Labor Day...High pressure aloft and at the surface will remain in place across the region through the forecast period. Thus, expect a continuation of humid conditions and hot temperatures. Highs each afternoon will warm into the middle and upper 90s. This, as dew points mix each day in the low and middle 70s, will yield afternoon heat index values above the century mark. As a result, a prolonged period of dangerous heat stress is expected, with a "Heat Advisory" at a minimum needed for portions of, if not all of, the forecast area each day.
Other than an isolated shower or storm being observed in the south and in the vicinity of the Highway 84 corridor today through Wednesday, the CWA overall will remain dry. As better moisture works north into the forecast area Thursday into Labor Day weekend, better rain chances will likewise spread northward into the CWA. This could bring some temporary relief from both the heat and dry conditions across the region, especially Friday through Labor Day. /19/
AVIATION
(18Z TAFS) Issued at 101 PM CDT Tue Sep 1 2026
VFR conditions will persist throughout the forecast period. Winds will generally remain light, however gusts of up to 15 mph will be possible at times through this evening./KP/
PRELIMINARY POINT TEMPS/POPS
Jackson 75 96 75 97 / 0 10 10 30 Meridian 75 99 75 98 / 0 0 10 10 Vicksburg 74 95 75 96 / 0 0 0 20 Hattiesburg 73 96 74 96 / 10 20 10 50 Natchez 74 96 74 96 / 10 10 10 30 Greenville 76 97 76 98 / 0 0 0 10 Greenwood 75 97 75 98 / 0 0 10 20
JAN WATCHES/WARNINGS/ADVISORIES
MS...Heat Advisory until 7 PM CDT this evening for MSZ018-019-025>027- 034>036-040>043-047>049-053>055-059>064-072.
Heat Advisory from noon to 7 PM CDT Wednesday for MSZ018-019- 025>066-072>074.
LA...Heat Advisory until 7 PM CDT this evening for LAZ007>009-015-016- 023>026.
Heat Advisory from noon to 7 PM CDT Wednesday for LAZ007>009-015- 016-023>026.
AR...Heat Advisory until 7 PM CDT this evening for ARZ074-075.
Heat Advisory from noon to 7 PM CDT Wednesday for ARZ074-075.
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