Overview
- A strengthening upper-level ridge — called a heat dome — is building over Texas and driving a shift to drier, hotter weather, forecasters reported on Monday.
- Austin is forecast to see several days of mid-to-upper 90s that are expected to warm into the low 100s within days while overnight lows hold in the mid-to-upper 70s, offering little nighttime relief.
- The National Weather Service said it will monitor heat-index values near or above 108°F to evaluate a possible heat advisory, a threshold tied to higher risk of heat-related illness.
- Houston and much of Southeast Texas are expected to stay below 100°F for now with highs in the low-to-mid 90s, but high dew points could still push heat-index readings into the triple digits and keep nights unusually warm.
- Long-range outlooks favor above-normal temperatures into late June and early July with below-normal rainfall across parts of the Southern Plains, increasing the chance of prolonged heat impacts and urging residents to follow standard heat-safety steps like staying hydrated and limiting outdoor exertion.