Highland Lakes Forecast: Warm Wednesday, Then Showers and a Cooler Friday
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The biggest change in the forecast isn't today's warmth. It's the approaching disturbance that will bring more clouds, periodic rain and cooler daytime temperatures to the Highland Lakes heading into the end of the workweek.
Wednesday: A warm, humid start
Wednesday, October 28: The Highland Lakes start with humid air and areas of cloud cover, with some sunshine developing. Afternoon temperatures range from the upper 70s in parts of the Hill Country to the lower 80s around the lakes. A passing shower or isolated thunderstorm is possible, but not every community will see rain.
Across Marble Falls, Horseshoe Bay, Kingsland and Burnet, the changing cloud cover may make conditions look more unsettled than they actually are at times. Any afternoon storm could produce a brief downpour, but the regional forecast does not call for widespread severe weather today.
Wednesday night: Clouds build
Tonight: Expect increasing clouds and another mild, humid evening. Showers begin developing farther west overnight as a new disturbance approaches Central Texas.
Thursday and Friday: Keep an umbrella handy
Thursday and Friday: More widespread clouds, cooler afternoons and periods of showers are expected. The greatest risk of heavy rainfall and isolated flash flooding is southwest of the Highland Lakes, especially near the Rio Grande and southern Edwards Plateau; residents should still watch for locally heavy downpours and changing road conditions.
The October 28 National Weather Service Austin/San Antonio forecast discussion highlights the heaviest rain potential mainly over the southern Edwards Plateau and Rio Grande region, with amounts potentially much lower farther east. That distinction matters: a high-end flooding outlook to the southwest should not be mistaken for the same level of risk at Lake LBJ. Still, motorists should avoid flooded low-water crossings wherever downpours develop.
Halloween and early next week
Halloween weekend: A few additional showers or thunderstorms could occur Saturday, but the National Weather Service expects rain chances to decrease toward trick-or-treating time. Sunday turns warmer, with a possible cold front and another round of unsettled weather early next week.
Sunday and Monday are expected to feel warmer again, with afternoon highs generally reaching the lower 80s in the Hill Country. Forecasters are monitoring another upper-level system and potential cold front early next week, but the timing and strength remain uncertain.
What this means around the lakes
Boaters on Lake LBJ and other Highland Lakes should monitor the latest radar and official alerts before heading onto open water, particularly when thunderstorms are nearby. Drivers on rural roads should be alert for reduced visibility and water collecting in low spots. For Halloween plans, check the forecast again Saturday because the timing of lingering showers could change.