Boulder enjoyed another burst of springlike weather Thursday, but that is soon to be a balmy memory buried under a significant snowstorm.

Temperatures reached the mid-60s on Thursday, bringing out the shorts and T-shirts. But the Front Range is under a winter storm watch, with forecasts calling for 5 to 10 inches of snow Friday night and Saturday.

The storm should start developing Friday evening, with a mix of rain and snow starting around 9 p.m., according to Frank Cooper, a meteorologist for the National Weather Service in Boulder. The snow is expected to begin accumulating after 11 p.m.

The Weather Service has issued a winter storm watch for much of the Front Range, including Boulder County. The watch was to go into effect Friday evening and remain in place through Saturday night.

There's a 60 percent chance of snow Friday night and a 90 percent chance Saturday, according to forecasts. The urban corridor is expected to get up to a few inches of snow by Saturday morning, then another 3 to 7 inches throughout the day.

Boulder meteorologist Matt Kelsch said Thursday that the storm does not appear to be "an epic slow-moving spring storm at this time."

He said the most likely scenario is that Boulder and other parts of the lower foothills and plains will receive between 5 and 10 inches of new snow, while the upper foothills and mountains will see between 10 and 18 inches.

If the forecasts prove true, the storm could top the season's previous heaviest dump, which was measured at 8 inches in Boulder on Feb. 24.

March is typically the month for the heaviest snowfall along the Front Range in Colorado.

Contact Camera Staff Writer Joe Rubino at 303-473-1328 or rubinoj@dailycamera.com.