textproduct: Jackson

KEY MESSAGES

- A dry airmass remains over the region through at least Tuesday, with a gradual warming trend through mid week.

- Rain chances return to the region, particularly Thursday into the weekend when heavier rainfall may be possible.

DISCUSSION

Issued at 102 PM CDT Sun Sep 27 2026

Northwest flow aloft persists across the region as ridging aloft remains wedged into the Lower Mississippi River Valley from the west. Meanwhile at the surface, high pressure centered over the Great Lakes region extends southward into the CWA, resulting in northeast winds across the area. This will continue to promote quiet weather across the CWA through the middle of the week. High temperatures will gradually warm a few degrees each day across the area, but through mid-week the dry airmass currently over the region will remain present under easterly flow. Despite the warming afternoon high temperatures, this dry air will allow for less humid conditions during the day, and pleasant conditions during the evening and overnight hours.

As we move into the latter portion of the week and into the weekend, moisture will subtly increase across the region as southerly flow at the surface and aloft returns. In turn, rain chances will also begin increasing each day, mainly Thursday into Saturday, as the aforementioned ridge aloft slides east of the Lower Mississippi River Valley during week's end. Increased troughing to the west, and the eventual eastward progression of this trough over the weekend, may result in a cold front traversing the CWA late in the weekend. Other than the overall increasing moisture & heat resulting in better rain chances across the area at the end of the forecast period, confidence in a frontal passage during this time is currently low. This is due to run-to-run inconsistencies in global models, as some runs stall the front west of the region and never bring it through the CWA. This scenario would maintain a more moist and warmer airmass across the area, with continued decent rain chances. /19/

AVIATION

(06Z TAFS) Issued at 1213 AM CDT Mon Sep 28 2026

Mid level cloud deck is overspreading the forecast area to start the period, but VFR conditions are expected to prevail at the TAF sites. A few light sprinkles are possible in the region before 12Z, but no flight impacts expected to TAF sites. /NF/

PRELIMINARY POINT TEMPS/POPS

Jackson 62 91 65 91 / 0 0 0 0 Meridian 59 90 61 91 / 0 0 0 0 Vicksburg 63 92 66 92 / 0 0 0 0 Hattiesburg 62 93 64 93 / 0 0 0 10 Natchez 64 93 66 93 / 0 0 0 0 Greenville 61 91 65 93 / 0 0 0 0 Greenwood 59 91 62 93 / 0 0 0 0

JAN WATCHES/WARNINGS/ADVISORIES

MS...None. LA...None. AR...None.