Snow Day Predictor for San Marcos, TX
San Marcos is a mid-size city in Texas. Will San Marcos schools close or run late tomorrow? The live odds below are computed from tonight’s forecast for San Marcos with our transparent snow-day model — no account, no guesswork hidden behind the number.
Enter your town to see the odds of a snow day or 2-hour delay tomorrow — with the exact weather factors behind the number.
Do San Marcos schools close for snow?
San Marcos sees often less than 2 inches a year. A rare winter storm can shut things down with very little accumulation. Snow and ice are so unusual that even a forecast of a coating can close schools for a day or more. Hard freezes and icy roads cause more delays here than snowfall does.
The percentage above updates with tonight's forecast — check back as a storm approaches, since timing and totals shift right up to the morning call.
Reading the San Marcos snow day odds
- Population
- 60,684
- Coordinates
- 29.88°N, 97.94°W
- Climate region
- Deep South / Gulf
- Typical winter snowfall
- often less than 2 inches a year
San Marcos is a mid-size city of about 60,684 people that sits well south, where snow is a rarer visitor, near 29.9°N in Texas. A winter here typically brings often less than 2 inches a year. A rare winter storm can shut things down with very little accumulation. Because the town falls in the Deep South / Gulf climate region, our model's closure threshold for San Marcos is set to close very readily — even a forecast of an inch, or a glaze of ice, can tip the odds.
The percentage at the top of this page isn't a static guess — it's rebuilt each night from San Marcos's own Open-Meteo forecast. The model reads seven signals from the overnight-into-morning window: total snowfall, whether any of it is timed for the 2–6 a.m. commute, freezing rain or sleet, the coldest air temperature, the wind chill, the peak wind, and how much snow is already on the ground. Snow and ice are so unusual that even a forecast of a coating can close schools for a day or more. Hard freezes and icy roads cause more delays here than snowfall does.
Because a 2-hour delay clears a lower bar than an outright cancellation, you'll often see delay odds for San Marcos even when the closure odds stay modest — that gap is the model flagging a borderline morning. The estimate shifts as the forecast firms up overnight, so it's worth re-checking San Marcos's odds the evening before school. Treat it as a well-informed second opinion for planning, never as an official Texas closing announcement.
Nearby snow day predictions
San Marcos snow day FAQ
Will there be a snow day in San Marcos tomorrow?
Tomorrow's odds for San Marcos are shown live above, computed from tonight's forecast with our transparent model. Treat it as a well-informed estimate and confirm with your district.
How much snow does it take to close San Marcos, Texas schools?
San Marcos sees often less than 2 inches a year. A rare winter storm can shut things down with very little accumulation. Snow and ice are so unusual that even a forecast of a coating can close schools for a day or more. Hard freezes and icy roads cause more delays here than snowfall does.
Is this an official San Marcos school closing list?
No — this is an independent, probabilistic estimate and is not affiliated with any San Marcos-area district. Always confirm closures and delays with your school or district directly.