San Antonio Sizzles: Record-Near Heat Precedes Midweek Storm Threat

Unseasonable Warmth Grips the Alamo City

San Antonio is experiencing an exceptionally warm start to March this Tuesday, March 3, 2026. Residents waking up today will notice a distinct humidity in the air as temperatures soar well above the historical average for early spring. While the morning started with a blanket of low clouds, the city is bracing for a significant temperature spike that will make the afternoon feel more like mid-summer than the beginning of meteorological spring.

Morning Conditions: Mild and Humid

Early risers encountered a thick layer of low clouds across the South-Central Texas region. As of the early morning hours, temperatures at Kelly Field and San Antonio International Airport hovered near 69 degrees Fahrenheit. The air remains humid due to steady south-southeast winds bringing moisture from the Gulf of Mexico. Commuters should expect these cloudy conditions to persist through the mid-morning hours before the sun begins to break through.

Afternoon Peak: Approaching 90 Degrees

The main weather story for today is the unseasonable heat. By early afternoon, skies are expected to gradually clear, allowing the sun to push temperatures toward a high of 88 degrees Fahrenheit. This is approximately 15 to 20 degrees above the typical average for this time of year. Along with the heat, wind speeds will increase, sustained at 15 mph with occasional gusts reaching up to 20 mph. Local meteorologists suggest securing loose outdoor items, as these breezy conditions will persist throughout the peak heating hours.

Evening Forecast and Overnight Outlook

As the sun sets, the clouds are forecast to return, keeping overnight temperatures quite mild. Expect lows to settle in the upper 60s, specifically around 67 degrees. While the daytime remains dry, a slight chance of drizzle is predicted to develop after 3:00 a.m. tonight. This serves as a precursor to a shifting weather pattern expected later in the week.

Warnings and Midweek Outlook

While there are no active severe weather warnings for San Antonio today, the National Weather Service is monitoring a cold front approaching the region. This front is expected to trigger rain and potential thunderstorms starting Wednesday afternoon. Residents are encouraged to:

• Complete outdoor activities today while conditions remain dry.
• Stay hydrated and take breaks if working outdoors during the 88-degree afternoon peak.
• Prepare for a 60% chance of rain and possible thunderstorms starting tomorrow, March 4.
• Keep an eye on local alerts for potential ponding on major highways like Loop 410 and I-35 as the weather turns more active midweek.