Ask anyone who's run the Austin Marathon more than once what the weather was like, and you'll get a different answer for nearly every year. Mid-February in Central Texas sits in an odd in-between zone — usually mild enough to be genuinely pleasant marathon weather, but never far from a cold front that can drop temperatures overnight or a warm spell that pushes conditions closer to spring. The race's own weather data on this page has the specific historical averages; this guide is about what those swings actually feel like on the road and how to prepare for either version of race day.

What a typical race morning feels like

On a fairly ordinary year, the 7 a.m. start is cool enough that standing around in the corral without a throwaway layer is uncomfortable, but not so cold that it's a real hazard. As the morning goes on and the sun climbs, temperatures rise steadily through the race, so runners who dress for the start often find themselves shedding layers by the halfway point and wishing they'd worn less by the finish. That warming trend is part of why pacing discipline matters so much here — the effort that felt comfortable in the cool early miles can feel noticeably harder once the temperature has climbed for a couple of hours.

Why Austin's February weather swings so much

Central Texas in February sits at the boundary between winter and spring, which means the same week can bring a crisp, dry, almost cold morning one year and a mild, humid one the next. A cold front pushing through in the days before the race can knock temperatures down significantly, while a ridge of high pressure can just as easily push things toward an unseasonably warm race day. There isn't a reliable pattern from year to year beyond generally mild-to-cool — which is exactly why runners who've done this race more than once tend to pack for a wider range of conditions than they would for a race with more predictable weather.

Humidity: the hidden variable

Temperature gets most of the attention, but humidity off Lady Bird Lake and the Colorado River is the variable that tends to surprise out-of-town runners most. A morning that looks comfortable on paper can still feel heavier than expected once you're a couple of hours into the race, particularly in the back half as the sun gets higher. It's worth planning your hydration and electrolyte strategy around the possibility of a humid day rather than assuming a cool start means an easy one all the way through.

How to dress and prepare

• Plan on throwaway layers for the start corral — a cheap long-sleeve or trash-bag poncho you're comfortable ditching once you warm up.
• Check the forecast in the final week rather than packing based on a typical year, since Central Texas weather can shift significantly in just a few days.
• Don't assume a cool morning means you can skip hydration planning; humidity can make a mild day feel warmer than the temperature alone suggests.
• If the forecast is trending toward an unseasonably warm race, consider adjusting your goal pace rather than fighting the conditions — Austin's hills already ask enough of you without also racing the heat.