San Antonio weather
Loading live data…Partly cloudy,rain likely tomorrow
NWS, the American and the European model agree on a high near 98° in San Antonio today. Tomorrow looks showers around 95°, with a 71% chance of rain.
The weather map: all three models at once
NWS, American, European side by side around San Antonio and nearby towns.Live rain radar →Next 14 hours
consensus of the three models14-day forecast
where the models agree, and where they splitSan Antonio, TX. Below we compare what NWS, American, European forecast for San Antonio right now and flag exactly where they disagree, then break down San Antonio's weather month by month and which forecast model has been most accurate here.
We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.
San Antonio weather by month
what to expect in San Antonio through the yearHere is San Antonio's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to San Antonio by season.
What San Antonio's weather is like through the year
San Antonio runs from warm summers, with August highs near 100°F, to cold winters, when January lows sit around 44°F (a swing of about 56°F across the year). May is usually the wettest month, and San Antonio sees roughly 36 inches of precipitation annually.
Best time to visit San Antonio
The most comfortable time to visit San Antonio is usually January, February, March and November, when daytime highs sit in the pleasant 60-78°F range and the heaviest May rain is behind you.
Which forecast is most accurate in San Antonio?
CheckWeather Score — graded against the weather that actually happened
The CheckWeather Score blends temperature, wind and rain accuracy — each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.
Bottom line: over the last 30 days the European model has been the most accurate forecast for San Antonio, scoring 87/100 on our CheckWeather Score, ahead of the American at 78. See the full US accuracy scoreboard for exactly how every model is tested.
Where the models disagree
temperature and rain, judged separatelyThe models often agree on temperature and still split on rain — and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.