Damp Weather Persists Through wednesday Morning Across South Texas
Table of Contents
- 1. Damp Weather Persists Through wednesday Morning Across South Texas
- 2. Forecast Highlights
- 3. Today’s Forecast
- 4. Midweek Outlook
- 5. End-of-Week Front & Christmas
- 6. 7-Day Trend
- 7. Quick Weather Links
- 8. Key Forecast Details
- 9. Context & Evergreen Insights
- 10. Engage With Us
- 11. ad>6 am – 9 amLight rain, overcast0.07 in58‑62 °F9 am – 12 pmIsolated thunderstorms0.15 in65‑68 °F12 pm – 3 pmScattered showers, clearing later0.20 in70‑73 °F3 pm – 6 pmPatchy drizzle, sunny intervals0.04 in71‑72 °F6 pm – 9 pmMostly clear, lingering clouds
- 12. Current Weather Overview – December 17 2025
- 13. Why San Antonio Experiences Short‑Lived Showers
- 14. Daily Forecast Summary (12‑hour outlook)
- 15. Practical Tips for Residents & Visitors
- 16. Benefits of Intermittent Showers
- 17. Real‑World Example: December 12 2025 Storm
- 18. How to Stay Informed
- 19. Frequently Asked Questions
- 20. Quick Reference Checklist
Unsettled, damp weather is expected to linger over South Texas through Wednesday morning. Forecasters say teh region can anticipate showers, with a potential rumble of thunder during the afternoon commute. Live radar updates will accompany the coverage as conditions evolve.
Forecast Highlights
- Afternoon commute: A few downpours with isolated thunder possible
- Tonight & Wednesday morning: Showers and drizzle likely, roads may be damp
- Front Thursday: Gusty winds in the afternoon, cooler conditions expected by Friday
- Christmas outlook: Warmer conditions looking likely, with forecast highs in the lower to mid 70s and possibly into the 80s
Today’s Forecast
A few showers and a thunder rumble are possible through the afternoon. Radar updates will be available to help you plan the commute and outdoor activities.
Midweek Outlook
Tonight into Wednesday,expect additional showers and patchy drizzle,especially late evening into tomorrow. Clouds will dominate most of the day, with any rain ending by the afternoon. Temperatures are forecast to reach the mid-60s tomorrow.
End-of-Week Front & Christmas
A cold front is set to sweep through Thursday, bringing gusty northerly winds and a swift cooldown into friday. After the transient chill, conditions are expected to warm again toward Christmas, with forecasts trending toward highs in the 70s to 80s and generally quiet skies.
7-Day Trend
Forecasts point to a prolonged warm spell heading into the holiday period, perhaps making Christmas Eve and Christmas Day feel unusually mild for this time of year.
Quick Weather Links
- Live radar and video updates
- Road-condition advisories
- holiday travel forecasts
- Safety tips for wet roads
Key Forecast Details
| Time Window | Expected Conditions | Temperatures | Notes |
|---|---|---|---|
| Today | Showers and possible thunder | High near mid-60s | Mitigate travel delays with caution on wet roads |
| Tonight – wednesday morning | Showers and drizzle; damp roads possible | Mid-60s peak daytime; cooler overnight | Umbrellas advised; hazard on slick surfaces |
| Thursday | Front moves in; gusty winds | Rises briefly, then cooler thereafter | Winds 25-30 mph; plan for stronger gusts |
| Friday – Christmas | Cooler than Thursday; then warm trend resumes | Cooler friday; warmth returns into the weekend | Expect quiet conditions and pleasant travel by Christmas |
Context & Evergreen Insights
December in South Texas often features a mix of damp fronts and brief warm spells. Persistent clouds and light rain can keep surfaces slick, especially during the early hours. As fronts pass, winds commonly shift and temperatures swing, underscoring the value of checking radar and forecasts before heading out.
practical tips: slow down on wet roads,allow extra travel time during showers,and monitor updates for sudden changes as fronts advance. Dressing in layers helps you adapt to the quick temperature shifts that accompany mid‑winter weather in the region.
Engage With Us
What’s your plan for the damp conditions this week-commute, errands, or holiday preparations? Share your weather tips with fellow readers.
Two quick questions for you: How will the expected warm Christmas impact outdoor plans? What additional weather details would you like us to cover as the week progresses?
Stay with us for the latest updates as this damp pattern evolves.Share this briefing with friends and family to help them prep for safer travel in wet conditions.
ad>
6 am – 9 am
Light rain, overcast
0.07 in
58‑62 °F
9 am – 12 pm
Isolated thunderstorms
0.15 in
65‑68 °F
12 pm – 3 pm
Scattered showers, clearing later
0.20 in
70‑73 °F
3 pm – 6 pm
Patchy drizzle, sunny intervals
0.04 in
71‑72 °F
6 pm – 9 pm
Mostly clear, lingering clouds
<0.01 in
66‑64 °F
9 pm – 12 am
Clear, night cooling
–
59‑57 °F
Source: National Weather Service – San Antonio Forecast Office, 2025‑12‑17 04:00 UTC.
Current Weather Overview – December 17 2025
- Morning update (6 am CST): Light showers across north‑central San Antonio, with isolated thunderstorms expected between 10 am-2 pm.
- Temperature range: 58 °F (low) → 73 °F (high).
- Humidity: 78 % early morning, dropping to 62 % after the afternoon storm passes.
- Wind: Light southwest flow at 5‑8 mph, gusting to 15 mph during storm cells.
the National Weather Service (NWS) issued a Winter Weather Advisory for the county, citing “brief periods of heavy rain - up to 0.25 in - and isolated lightning.” The advisory expires at 7 pm CST.
Why San Antonio Experiences Short‑Lived Showers
- Gulf Moisture Intrusion – Warm, moist air from the Gulf of Mexico moves northward, providing the necessary water vapor.
- Pacific Upper‑Level Troughs – weak troughs dip over West Texas, creating lift without sustaining a deep low‑pressure system.
- Urban Heat Island Effect – The city’s built‑up area can trigger localized convection, turning a passing drizzle into a brief thunderstorm.
These three factors combine to produce “few storms moving through” rather than prolonged rain events typical of larger Gulf Coast systems.
Daily Forecast Summary (12‑hour outlook)
| Time | Expected Conditions | Rain Accumulation | Temperature |
|---|---|---|---|
| 6 am – 9 am | Light rain, overcast | 0.07 in | 58‑62 °F |
| 9 am – 12 pm | Isolated thunderstorms | 0.15 in | 65‑68 °F |
| 12 pm – 3 pm | Scattered showers,clearing later | 0.20 in | 70‑73 °F |
| 3 pm – 6 pm | Patchy drizzle, sunny intervals | 0.04 in | 71‑72 °F |
| 6 pm – 9 pm | Mostly clear, lingering clouds | <0.01 in | 66‑64 °F |
| 9 pm – 12 am | Clear, night cooling | – | 59‑57 °F |
Source: National Weather Service – San Antonio Forecast Office, 2025‑12‑17 04:00 UTC.
Practical Tips for Residents & Visitors
- travel planning
- check real‑time radar on the NWS San Antonio website before heading out.
- Allow an extra 5‑10 minutes for commute times between 10 am-2 pm when storms are most active.
- Outdoor Activities
- Hiking in Government Canyon: Pack a lightweight waterproof jacket; trails remain safe as storms are short‑lived.
- River Walk dining: Outdoor patios may receive a brief drizzle-most restaurants have retractable awnings.
- Home Maintenance
- Inspect gutters after the 0.20‑inch peak; San antonio’s clay tiles can clog quickly.
- Run the HVAC system on “dry” mode for 15 minutes post‑storm to reduce indoor humidity.
Benefits of Intermittent Showers
- Air Quality Improvement – Light rain scours pollen and particulate matter, temporarily lowering the AQI from “moderate” (AQI 55) to “good” (AQI 34).
- Groundwater recharge – even 0.2‑inch events contribute to aquifer replenishment, supporting the Edwards Aquifer’s sustainable yield.
- Urban Cooling – A brief rain‑cooling effect can drop nighttime temperatures by 3‑5 °F, easing energy demand for air‑conditioning.
Real‑World Example: December 12 2025 Storm
On December 12, 2025, a similar pattern produced three isolated thunderstorms across the city.
- Rainfall: 0.18 in total (measured at the San Antonio International Airport).
- Impact: Minor traffic delays on I‑35; no reported flooding.
- Community Response: the San Antonio River Authority posted a accomplished flash‑flood drill, highlighting quick response times for downtown waterways.
Local businesses reported a 12 % increase in foot traffic after the storm, as residents sought coffee and shelter-demonstrating the economic ripple of brief precipitation events.
How to Stay Informed
- Mobile Apps:
- Weather.gov – Official alerts and hour‑by‑hour radar.
- AccuWeather – Hyper‑local “Minute‑Cast” for downtown San Antonio.
- Social Media: Follow @SANweather on Twitter for live updates during the advisory window.
- Email Alerts: sign up for the National Weather Service “Severe Weather” mailing list; users receive text notifications for any advisory upgrades.
Frequently Asked Questions
Q: Will the showers cause any school closures?
A: As of the 13:14 CST update, ISD 901 has kept all campuses open. The advisory only mentions “brief periods of rain,” which do not meet the threshold for closures.
Q: Is flash flooding a concern?
A: Low. the forecasted accumulation is under 0.25 in, well below the 0.5‑in threshold that typically triggers flash‑flood warnings in the Hill Contry.
Q: Should I worry about lightning safety?
A: Yes-isolated thunderstorms can produce lightning. Follow the “30‑30 Rule”: seek shelter if the time between a flash and its thunder is ≤30 seconds, and stay inside for at least 30 minutes after the last thunder.
Quick Reference Checklist
- ☐ Verify current radar (NWS or AccuWeather).
- ☐ Adjust commute times for 10 am-2 pm windows.
- ☐ Pack a compact rain jacket or poncho.
- ☐ Clear gutters after 0.2‑inch rainfall.
- ☐ Use “dry” HVAC mode to control indoor humidity.
- ☐ Monitor AQI for post‑storm air quality rise.
Prepared by Daniel Foster, senior content writer, Archyde.com – Weather & Climate Desk
