There are signals that continue to point to an upcoming cold weather pattern for the central and eastern states as the early part of the winter season gets underway. These signs come from such diverse places as the stratosphere over the North Pole (re: Stratospheric Warming), the stratosphere over the tropics (re: QBO), and the equatorial part of the Pacific Ocean (re: MJO).
To begin, it appears as though there will be a “Stratospheric Warming” event over the polar region of the Northern Hemisphere in coming days which is quite a rare occurrence for this early stage of the winter season. In fact, it appears there have been only two Stratospheric Warming events in recent history that took place during the month of November...2000 and 1968...and in both of those years the month of December was quite cold across the nation. One atmospheric phenomenon that supports the idea of one (or more) “Stratospheric Warming” event(s) this winter season is known as the Quasi-Biennial Oscillation (QBO) which is a changing wind anomaly in the tropical lower stratosphere. When an “easterly” or “negative” phase of the QBO is combined with La Nina conditions in the tropical Pacific Ocean – both of which represent the current situation - there is a strong tendency for an increase in “Stratospheric Warming” events and the disruption of the polar vortex. This particular teleconnection was one of the factors highlighted in the ”2025-2026 Winter Outlook” issued back in October.
Additionally, there is an oceanic-atmospheric phenomenon known as the Madden-Julian Oscillation (MJO) that affects the weather patterns across the globe. The MJO is an eastward moving disturbance of clouds and rain that traverses the planet in the tropics and - depending on its location and the time of the year - it can contribute to colder-than-normal weather patterns across the central and eastern US.
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After another chilly and cloudy day, a warm front will push through the area later tonight and the end of the work week should feature slightly milder conditions to go along with the threat of PM showers. Low pressure will track near us from late tomorrow into Saturday bringing us a continued chance of showers on Friday night and Saturday. High pressure will edge its way into the area on Sunday and the weekend should end with some sunshine on Sunday and also for the first part of next week.
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After another chilly and cloudy day, a warm front will push through the area later tonight and the end of the work week should feature slightly milder conditions to go along with the threat of PM rain. Low pressure will track near us from late tomorrow into Saturday bringing us a continued chance of rain on Friday night and Saturday. High pressure will edge its way into the area on Sunday and the weekend should end with some sunshine on Sunday and also for the first part of next week.
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After another quiet day at mid-week, a storm system should bring cooler conditions and some shower activity to the Denver metro region today and tonight and snow can fall in nearby higher elevation locations. The pattern for the weekend should become drier and warmer with sunshine likely on both days.
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The rest of the week and weekend look to be rather mild and unsettled with the chance of showers and thunderstorms from time-to-time. In terms of temperatures, they’ll likely reach the upper 70’s later today and on Friday and the low-to-mid 70’s each day this weekend.
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After another chilly and cloudy day, a warm front will push through the area later tonight and the end of the work week should feature slightly milder conditions to go along with the threat of PM rain. Low pressure will track near us from late tomorrow into Saturday bringing us a continued chance of rain on Friday night and Saturday. High pressure should edge its way into the area on Sunday and the weekend should end with some sunshine on Sunday and also for the first part of next week.
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The remainder of the week looks to be rather mild and unsettled with the chance of showers and thunderstorms from time-to-time. In terms of temperatures, they’ll likely reach the upper 70’s later today and on Thursday and the middle 70’s on Friday afternoon.
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Low pressure will pull away from the region this morning and the early day light rain or drizzle will come to an end…it remains on the chilly side with afternoon high temperatures within a couple degrees of 50. A warm front slides across the area later Thursday night and the end of the work week should feature milder conditions to go along with the threat of showers. A weak cold front then crosses the area on Friday night and its passage will pave the way for a slightly cooler start to the upcoming weekend.
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Another relatively quiet day coming to the metro region featuring some sunshine and temperatures peaking in the middle 60’s. It turns colder-than-normal on Thursday, and the weather becomes somewhat unsettled with the chance of showers as we head to the end of the week.
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Rain comes to an end this morning as low pressure pulls away from the region and it’ll remain on the chilly side with afternoon high temperatures in the mid-to-upper 40’s…below-normal for this time of year. A warm front slides across the area later Thursday night and the end of the work week should feature slightly milder conditions to go along with the threat of showers. A weak cold front crosses the area on Friday night and its passage will pave the way for a slightly cooler start to the upcoming weekend.
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