San Antonio, Texas – Gusty afternoon storms could disrupt commutes and outdoor plans across South Central Texas on Monday, June 30, with heat index values climbing above 100 before the rain hits.
According to the National Weather Service, a 40% chance of showers and thunderstorms begins after 1 p.m. Monday, with gusts up to 25 mph possible. Storms may be brief but could impact travel on major routes like I-35, Loop 410, and US-281 through the evening commute. Residents should secure loose outdoor items, check for local alerts, and limit exposure to peak heat hours.
By Monday night, conditions dry out briefly before a smaller, 20% storm chance returns Tuesday afternoon. Highs remain consistent in the low to mid-90s, with humidity pushing heat index values to the upper 90s or beyond.
Looking ahead, Wednesday brings isolated storms and continued warmth, but the 4th of July (Friday) appears mostly dry and sunny — a relief for anyone planning fireworks or gatherings. Temperatures on Independence Day could top 97°F, so hydration and sun protection will be key.
⚠️ Drivers and outdoor workers should stay weather-aware throughout the early week. Expect shifting wind conditions and isolated storm cells that may reduce visibility or cause minor flooding in low-lying areas.
🔎 Five-Day Forecast for San Antonio (Starting Monday, June 30)
- Monday: High 92°F | PM storms likely after 1 p.m. | Gusts up to 25 mph
- Tuesday: High 93°F | Isolated PM storms | Slight breeze
- Wednesday: High 93°F | 20% chance of afternoon storms | Windy
- Thursday: High 94°F | Mostly sunny | Hot and dry
- Friday: High 97°F | Mostly sunny | Strong summer heat builds
