Snow for the First Day of Spring

Posted at 5:26 PM, Mar 20, 2023

A WINTER WEATHER ADVISORY is in effect for the higher terrain of central and southwest Montana into Tuesday evening.

Happy Spring! While the calendar now says the season is spring, it was a snowy and cold start to the new period. It can snow any month of the year here in Montana, but the pattern is colder and snowier than normal at this time. Areas of light to moderate snow will continue to move up north through the state into Monday night, making it about as far north as the Missouri River in north-central Montana. Snow will accumulate from a trace up to about 3" in the lower elevations, with up to 5" in the hills around Helena. The higher peaks of southwest Montana will see up to 12". As the stronger March sun sets, that snow will accumulate on roads so travel through the night into Tuesday morning will be a little slippery. Tuesday will start off with snow in the morning around Helena, Lewistown and Bozeman, but the storm will slowly move out with the clouds breaking up in the afternoon. Highs will be chilly in the 20s and 30s for most areas. Another storm will move into southern Montana with snow on Wednesday but the track of this system will be further south. Most of the accumulating snow will fall closer to I-90. Places like Helena and Lewistown will become mostly cloudy but snow should stay just south of this line. Up closer to the Hi-Line there will be more sunshine. Highs again will be in the 20s and 30s, still way below average. Thursday will be a little warmer and drier. Skies will be partly cloudy with highs in the 40s to around 50. A cold front will move through with some snow showers in the western mountains later in the day. Friday will be a very windy day with frequent snow showers in and near the mountains. The snow showers will be heavy at times, but the plains should have little to no snow activity. A strong west wind will gust up to 40-50mph. Highs will be in the 30s and 40s, making it another chilly day. The first weekend of spring will have snow around both days. Saturday will be a mostly cloudy day with snow showers and highs in the 30s to low 40s. A steady light snow will likely develop for Sunday with highs back down in the 30s. It may be a while, possibly by the end of first week of April, for temperatures to warm up to average spring levels.

Have a great day.
Curtis Grevenitz
Chief Meteorologist