DENVER — So long summer, hello fall! The autumnal equinox arrived just after 6 p.m. Mountain Time.
It'll start to feel a bit more like the fall season mid-week. A wetter weather pattern is moving in, and Wednesday into Thursday is shaping up to be the most active stretch of the week.
Tonight, scattered showers and storms are rumbling across parts of the Denver metro with plenty of lightning lighting up the night sky. Look for mostly cloudy skies after midnight across much of the state with lingering showers in southern Colorado.
Wednesday is when the weather takes a turn. More moisture surges into Colorado, and a disturbance moving through Wednesday evening will help trigger a much better chance for showers and thunderstorms. Rain chances start to climb around Denver Wednesday afternoon, with a better bet of storms Wednesday evening and overnight. The eastern plains will have the highest chance of rain and strong storms.
And this time, heavy rain is the biggest concern. Moisture levels will be much higher Wednesday night, with the potential for locally heavy downpours, especially across eastern Colorado. Denver could see some soaking rain too. However, lots of cloud cover may keep the atmosphere from becoming very unstable, which could limit some thunderstorm activity.
Thursday morning could be the wettest part of the week. Showers and thunderstorms are likely across the eastern plains. A few storms could dump heavy rain in a short amount of time. The metro and foothills will also have a chance for showers and storms. With widespread clouds and rain, temperatures will take a big tumble, with highs only in the upper 60s to low 70s. Rain chances should ease Thursday afternoon as the storm system moves out.
Friday brings a quieter setup, although a few mountain showers and storms will still be possible. Temperatures rebound into the upper 70s, then the weekend looks warmer and much drier with highs in the low to mid 80s. But don’t put the umbrellas away just yet — another system could bring cooler temperatures and another round of showers and storms by Tuesday.
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