6 AM MST, Thursday, January 30, 2020
February will start with a couple of warm days this weekend, and then Monday will bring the best chance in a while for widespread snow.
Before then, there is a chance for a few snow showers this afternoon and evening. Little or no accumulations is expected and the best chance is south of Denver.
Saturday and Sunday are likely to see high temperatures topping 60 each day in the urban corridor with dry weather. There is good agreement among model guidance that a cold front will move through early Monday followed by increasing clouds and a period of snowy weather extending into Tuesday morning. Early indications are for a 3-7 inch snowfall, but that will need to be refined as we get closer to the storm.
3 PM MST, Sunday, January 26, 2020
After a long dry spell there is at least a chance for light amounts of precipitation this week for the eastern foothills and plains. The first chance will come Monday in the form of either rain or snow showers. If that occurs, amounts are likely to be small. The second chance will come Wednesday afternoon and/or evening and could result in some areas receiving a dusting to 2 inches of snow.
January is on average the driest month of the year for the Front Range urban corridor. But Denver and Boulder have had no measurable precipitation this month, and if we do get through this final week of January with no measurable precipitation, that would be very unusual. Either way, the potential amounts this week are small, so January will probably end dry and milder than average.
The seasonal snowfall (Sep-Jan) in Boulder at this point is 59.3″ which is greater than the average Sep-Jan of 46.3 inches despite the dry December-January. October and November at the Boulder climate station saw 55.9 inches.
6:20 AM MST, Thursday, January 16, 2020
A strong Pacific cold front on Friday is likely to bring strong west and northwest winds. Near and west of the continental divide there will likely be 4-8″ of snow in mountain areas, with blowing snow at the high passes.
For the eastern foothills and plains it should be mainly dry, but gusty winds are likely Friday, especially afternoon and evening. Some gusts will probably be greater than 60 mph near the foothills. Although it should be mainly dry, some areas of precipitation may survive the trip into eastern Colorado before drying out. So some localized squalls of rain or snow are possible, but with little accumulation.
The weekend is expected to be dry, starting out cool , but ending mild. The next chance of snow for eastern Colorado may come around the middle of next week.
1PM MST, Thursday, January 9, 2020
A storm system moving through Colorado today through Friday morning will bring a discontinuous area of snow. For the Front Range region, the window when snow may occur is this evening through early Friday. Accumulations are likely to range from zero in some areas to about an inch in others.
The weekend should be dry. Temperatures Friday through Sunday are likely to be near the climatological average, and that may seem cold compared to the extended period of mild weather that we have been enjoying.
12:30 pm MST, Friday, January 3, 2020
Expect mild temperatures Saturday (well into the 50s along the urban corridor) and then about 10-15 degrees cooler Sunday, but still not below average. By Monday temperatures might be a little below average.
Dry weather is expected, except there might be some localized snow in the mountains starting late Sunday. Areas of blowing snow are likely at some of the high passes at times over the weekend.
Windiness might be the real story. In southeastern Wyoming strong winds (gusts over 60 mph) are likely Saturday and again late Sunday after what might be a slight lull period early Sunday. For the northeastern Colorado foothills and adjacent plains the setup is not as clear cut, but if you are travelling you should be prepared for some local strong westerly gusts in and near the foothills on Saturday, especially late Saturday. After what may be a quieter period early Sunday, the chances for strong northwesterly gusts increases again late Sunday and may extend out onto the high plains.