Plaincast
What the forecast actually says — NWS Area Forecast Discussions, decoded into plain English.
Revised in 3 passages since the 12:20 AM discussion. See every revision.
Low rain chances today over the coastal plains, Hill Country, southern Edwards Plateau and portions of the I-35 corridor.
Temperatures remain above normal through the forecast period, with continued concerns for maximum temperatures and peak heat index values near Heat Advisory levels this weekend.
Most areas remain dry into next week, except for some low rain chances over the coastal plains.
(Today through Saturday) Issued at 1200 AM CDT Fri Sep 11 2026
A weak, mid-level low will persist across the northwestern Gulf today, with northwest to north flow aloft over south central Texas. A weak disturbance embedded in the northwest flow aloft will move out of west central Texas into portions of central Texas today. Most of the hi-res models show potential for some convection today from the Hill Country into portions of the I-35 corridor near Austin, then southeastward toward the coastal plains. We will keep rain chances low, generally around 20%, with the late afternoon and evening hours favored for convection. On Saturday, mid and upper level high pressure builds in from the west, forcing the low pressure in the northwestern Gulf southward. Subsidence should limit the chance for convection on Saturday and we will keep the forecast dry for all areas at this time.
Temperatures on Friday will be similar to today, with highs in the mid 90s to lower 100s. Peak heat index values today may briefly reach 108 degrees over the coastal plains this afternoon. We should see an upward trend in high temperatures on Saturday as the low- level thermal ridge sharpens in response to an increase in mid and upper level high pressure to our north. At this time, current trends suggest we may need a Heat Advisory for areas generally along and east of I-35 on Saturday.
(Saturday night through Thursday) Issued at 1212 AM CDT Fri Sep 11 2026
For early next week, mid and upper level high pressure will initially be centered over the southern Great Plains. The center of this high pressure will move eastward with time and eventually settle over the Smoky Mountain region of Tennessee. This area of high pressure will continue to strengthen into the middle to late portion of the upcoming week, resulting in high pressure gradually building in from the east. This is expected to keep our forecast mostly dry along with above normal temperatures. Some late afternoon convection may be possible over the coastal plains region as the seabreeze moves inland. Any rain chances would likely remain low.
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Data from the National Weather Service. Translated by Claude. About · For developers & agents · Subscribe: RSS feed for this office · Source on GitHub