The storm before the heat

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A WINTER WEATHER ADVISORY has been issued for southwestern Montana through Tuesday.

Happy May!
April ended with the coldest temperatures in 25 years, and precipitation was at or slightly below normal in most areas. A little cool and humid weather will continue until May, but there will be a good warm-up that will last a few days. Before getting to this hot, a new storm moving through the Pacific Northwest has already started spreading showers and isolated thunderstorms across Montana. The path of this low pressure will be further south than the last storms, so more precipitation will fall over Idaho, Wyoming and southern Montana. Some showers will reach as far north as central Montana on Tuesday, but heavier rains and mountain snow will be closer to I-90 and the Wyoming border. Overall, it will be a cooler, cloudier day for most of the state. Travel can be a bit tricky with a build up of sleet on Bozeman Pass, Monida Pass, Norris Hill and even Deep Creek Pass could have snow Tuesday morning. Tuesday’s highs will be warmer the further north you go, 60 on the Hi-Line, 50 in central areas, 40 in the south and 30 in the mountains. This storm will clear in time for Wednesday, which should be a nice spring day for most of the state. The skies will be mostly sunny, the wind will be fairly light and temperatures will warm into the 60s and 70s. Thursday will be even warmer with highs in the 70s and 80s. a cold front will trigger showers and thunderstorms late in the day. Our warm-up will be short. Friday is the return to showers, clouds and cooler temperatures. Mother’s Day weekend will be cooler with more showers and snow at higher elevations as well. A new low pressure area will spread rain showers and mostly snow aloft on Saturday. It’s more unstable than downright stormy. Mother’s Day Sunday will be cooler with highs in the 40s and 50s. Some snow may mix with rain in the lower elevations. The mountains could again have a few centimeters of snow. Wet and cool weather is likely to continue Monday and Tuesday with more snow in the mountains and a mix of rain and snow in the lower elevations. Cool, active weather with more chance of much needed precipitation will continue through mid-May. Even average rainfall would be excellent for drought conditions. At the very least, it doesn’t look like the drought will get any worse this month.

Have a nice day.
Curtis Grevenitz
Chief Meteorologist

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