6 AM MDT, Monday, September 17, 2018
Some clouds and cooler weather should move into the Front Range region as early as Wednesday, certainly by Thursday. But there is very little chance for rain at any one location.
For today and tomorrow the high temperatures are likely to be near record. For Denver the record highs Monday and Tuesday are 95 and 93, and in Boulder it is 93 both days. Boulder did already set a record of 93 on Saturday, eclipsing 92 from 1948. So summer is hanging in there for another few days, and nothing dramatically cold or wet is in the near future.
12:05 PM MDT, Tuesday, September 11, 2018
Several tropical cyclones are threatening U.S. states and territories, most prominent is Hurricane Florence for the Carolinas, and that will be dominating weather news through the weekend.
For the Front Range there is minor news possible in the form of record high temperatures today and tomorrow. There is enough moisture in the atmosphere to trigger cumulus clouds that will limit the solar heating. But even with that we are likely to get close to records. The records for today are 92 in Denver (1951) and 91 in Boulder (1974) and for tomorrow they are 94 in Denver (1911) and 93 in Boulder (1956). The warmth will still be with us on Thursday, but the records are pretty hot that day (96 in Denver and 95 in Boulder, both from 1990), so we will probably not set any records that day. It could be early next week before we see a real cold front and a chance for showers. Enjoy the late season heat. This is a far different atmosphere than what we had 5 years ago on September 11-12 when records rains triggered widespread floods and landslides.
6:30 AM MDT September 4, 2018
The moisture over the central Rockies this past weekend made a lot of clouds but it didn’t produce much rain for the northern half of Colorado. The chance for rain in the Front Range region is not over yet.
After a warm day today, a cold front will push through from the north this evening and bring cooler weather. At the same time an area of above average atmospheric moisture will be moving through the region today through Thursday associated with an upper level disturbance from the southwest. The result should be some showers and thunderstorms around this evening and then Wednesday and Thursday afternoons/evenings as well. In addition, there could be some areas of low clouds and drizzle or rain late tonight and into Wednesday morning.