By the time March rolls around, most Texans are peeling off clothing and girding themselves for six long months of sweat, searing sun, and heat so intense you need potholders to touch the steering wheel of your car. In Colorado, it’s a different story. Late March and early April—or, as I like to call it, secret ski season—brings some of the heaviest snows to parts of the Centennial State (and beyond). The cost of lift tickets drops, crowds thin, and days get longer, too.But it doesn’t happen everywhere. Though conditions vary year to year (and are progressively worsening as climate change heats up the planet), Colorado’s more southern resorts tend to get hit with their biggest storms earlier in the season. In New Mexico, warmer…