The latest update on San Antonio weather shows breezy and dry conditions this Sunday morning, with a strong cold front sweeping through the region and prompting a heightened fire-weather alert. The National Weather Service has issued a Red Flag Warning from 9 a.m. to 9 p.m. CST for all of South Central Texas — including the San Antonio metro area.
Current Conditions and Forecast
At present, San Antonio is experiencing mostly sunny skies with temperatures around 63 °F (17 °C). Through midday, the city will warm gradually into the 70s, reaching a high near 73 °F (23 °C) by mid-afternoon.
By evening, clear skies are expected with temperatures dropping into the 50s. Late tonight, readings could dip to around 56 °F (13 °C). A strong north wind is currently blowing at 15–30 mph, with gusts reaching up to 40–45 mph. Relative humidity is expected to fall to 15–20%, creating a significantly enhanced fire danger.
Why the Fire Risk Is Elevated
Within the context of the current San Antonio weather, several key factors are combining to create dangerous fire conditions:
- Dry vegetation: The fall season has left much of the region’s vegetation brittle and moisture-starved.
- Strong winds: Gusts approaching 40 mph can rapidly fan flames and carry embers.
- Low humidity: Dry air accelerates fuel drying and fire spread.
These conditions mean any fire that starts today could spread quickly and become difficult to control. Outdoor burning is strongly discouraged.
Forecast Highlights for the Coming Days
- Sunday (Today):
Expect gusty winds through the morning, with gusts near 40–45 mph. Highs will reach the upper 60s to low 70s °F. Fire risk remains critical through the evening. - Sunday Night to Monday:
A noticeable drop in temperature is expected after sunset. Wind chills may fall into the 20s and 30s °F in the Hill Country and surrounding areas. - Monday:
Winds will weaken, but dry air persists. Expect mostly sunny skies with highs near 70 °F. - Midweek Outlook:
Temperatures will gradually warm back into the upper 70s to near 80 °F, with calm winds and clear skies. Rain chances remain very low through the rest of the week.
Key Weather Metrics at a Glance
| Metric | Value/Range |
|---|---|
| High temperature | ~70–73 °F today |
| Evening low | ~56 °F or lower in the metro |
| Sustained winds | 15–30 mph |
| Wind gusts | Up to ~40–45 mph |
| Relative humidity | As low as 15–20 % |
| Fire danger level | Critical (Red Flag Warning) |
Impacts and Safety Tips for Residents
With the San Antonio weather bringing critical fire conditions, residents are urged to take precautions:
- Avoid outdoor burning such as campfires or debris fires.
- Secure outdoor items, including furniture, decorations, and trash bins that may blow away.
- Be cautious with equipment such as grills or vehicles parked on dry grass.
- Check local burn bans before lighting anything outdoors.
- Stay hydrated and limit outdoor activities during the windiest hours.
Even small sparks from vehicles, power tools, or cigarettes can ignite fires in today’s conditions.
Understanding the Weather Shift
This abrupt change in San Antonio weather is the result of a strong cold front that pushed through the region overnight. It brought in cooler, drier air from the north and triggered the high winds now sweeping across much of South Central Texas.
Such fronts are common in November, but the intensity of this one — with its sharp drop in humidity and gusty winds — makes it particularly significant for fire safety.
Looking Ahead: Calmer Days Coming
After tonight, conditions in San Antonio are expected to stabilize. Winds will gradually subside on Monday, leading to calmer, cooler mornings and comfortable afternoons. By midweek, the city should enjoy clear skies, mild sunshine, and moderate temperatures in the upper 70s.
Although no rain is in the forecast for the next few days, forecasters note that humidity levels will slowly rise by late week, reducing — though not eliminating — the fire risk.
Summary
Today’s San Antonio weather brings a mix of sunshine, strong winds, and a heightened fire danger due to low humidity. While temperatures remain pleasant, the combination of dry air and gusty winds creates hazardous conditions for outdoor burning. Residents are advised to stay vigilant, secure loose objects, and avoid any activity that could spark a fire.
Stay aware and stay safe — the clear skies are beautiful, but caution is essential until conditions ease later this week.