NWS, American, European side by side around San Antonio and nearby towns.Live rain radar →
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Next 14 hours
consensus of the three models
7-day forecast
where the models agree, and where they split
San Antonio, TX is at its warmest in Aug (average highs near 100°F) and coldest in Jan (lows around 44°F), with roughly 36 in of precipitation across the year. Below, compare what NWS, American, European forecast for San Antonio right now, and see exactly where they disagree.
San Antonio climate by month
average daytime high and overnight low across a typical year
Jan
64°
44°
Feb
70°
50°
Mar
77°
57°
Apr
81°
62°
May
87°
69°
Jun
96°
75°
Jul
97°
77°
Aug
100°
79°
Sep
94°
75°
Oct
86°
66°
Nov
73°
55°
Dec
69°
50°
Common questions
What's the weather in San Antonio today?
On this page we show what NWS, American, European each forecast for San Antonio today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in San Antonio today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for San Antonio and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for San Antonio?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the San Antonio forecast is reliable, and when they split you should expect surprises. See our tested US accuracy scoreboard for how the models compare.
What is the warmest month in San Antonio?
Aug is typically the warmest month in San Antonio, with average highs around 100°F.
How cold does San Antonio get?
The coldest month in San Antonio is Jan, when overnight lows average about 44°F.
How much rain does San Antonio get?
San Antonio sees roughly 36 in of precipitation a year, with May usually the wettest month.
The forecasts Americans check
The two biggest apps keep their model a secret, so we can't show their numbers, only link you to them. The National Weather Service is public, so its data sits right in the comparison above.