San Antonio Flirts with Records as Unseasonable Heatwave Grips the City

A Morning Chill Followed by a Swift Warm-Up

San Antonians starting their day should reach for a light jacket, but they likely won't need it for long. Friday morning began with a crisp 44°F, typical for a South Texas winter morning. However, with clear skies and high pressure building over the region, that chill is dissipating faster than usual. By mid-morning, temperatures are expected to soar through the 50s and 60s, setting the stage for a dramatic afternoon climb that will feel more like late May than early February.

Challenging the Record Books

The headline for today is undoubtedly the heat. Forecasters are calling for a high of 83°F, which is nearly 15 degrees above the seasonal norm. This puts San Antonio within striking distance of the daily record of 84°F, set only one year ago in 2025. This unseasonable warmth is driven by a combination of high atmospheric pressure and light west-southwesterly winds that are preventing any cooler air from settling in. Residents should expect wall-to-wall sunshine through the peak hours of 2:00 PM to 4:00 PM, with humidity remaining pleasantly low at around 27% to 30%, making for a very dry and bright afternoon.

Evening Outlook and Nighttime Cool-Down

As we head into the evening, the heat will gradually recede, though the air will remain mild through the twilight hours. With the sun scheduled to set at 6:16 PM, outdoor activities will benefit from a calm atmosphere and clear visibility. Overnight, the lack of cloud cover will allow for efficient radiational cooling, bringing the thermometer back down to a low of 44°F by early Saturday morning. This wide temperature swing—nearly 40 degrees between the day's high and night's low—is a classic hallmark of dry winter air in the San Antonio area.

Safety and Health Notes

While the skies are clear and there are no rain or wind warnings in effect, there are a few considerations for today's unique conditions:

• Allergy Alert: Local monitoring indicates that tree pollen levels are currently in the "High" range. If you are sensitive to winter allergens, take necessary precautions before heading out.
• UV Exposure: Despite it being February, the total lack of cloud cover means UV levels will be moderately high during the afternoon. Sun protection is recommended for those working or playing outdoors.
• Hydration: With the sudden jump in temperature and low humidity, staying hydrated is essential, especially for those planning to use the city's parks or the River Walk today.

Quick Weather Summary for February 6, 2026

• High Temperature: 83°F (Approaching record highs)
• Low Temperature: 44°F
• Rain Chance: 0%
• Wind: Light west-southwesterly at 5-10 mph
• Sky Conditions: Sunny and Clear