5:50 AM, Monday, May 15, 2017
The next organized storm system to impact the Front Range is likely to move slowly through the Southwest Wednesday night through Friday night. It appears that it may drag down a polar air mass from the north which could result in temperatures of around 32F later this week or Saturday morning. For those who have tender annuals outside this is not a high-confidence forecast yet, but you should probably have a plan to cover vulnerable plants.
Precipitation this week
There is only a small chance for an afternoon shower/thundershower today and Tuesday, and most areas will likely remain dry. As the next storm system approaches the coverage of afternoon/evening showers is likely to increase a bit Wednesday. It’s too early for details, but sometime in the period Thursday thru late Friday we may experience a period of overcast and steady precipitation. If the storm system passes south of Colorado it may be associated with enough cold air to help drag the rain/snow line down into the lower foothills or plains. More on that later this week.