Monthly Archives: June 2021

Brief cool spell Sunday night through Tuesday morning

9 AM, Saturday, June 19, 2021

As the Little River Band once sang, “time for a cool change.” That change is coming, but it won’t last long.

Today is likely to be another hot day (but not record hot) with a considerable amount of clouds around and some locations getting an afternoon thunderstorm. Sunday will be warm at first, but the cold front may move into southeastern Wyoming and northern Colorado before evening, and then south through eastern Colorado during the evening. There may be a few thunderstorms around during the afternoon, and then a period of low clouds and some areas of drizzle or light rain Sunday night or early Monday. Monday’s high temperatures in the lower elevation may struggle to reach 75. But drier and hotter weather should be back by midweek.

The solstice occurs Sunday, June 20th, at 9:32 PM MDT. That will be just in time for the start of our 36-hour cool spell.

Western Colorado, where the drought persists, will not see much cooler weather or rain from this cold front.

Record heat today; a little less hot by weekend

6:10 AM MDT, Wednesday, June 16, 2021

The heat wave will continue across the Front Range today and tomorrow. There will probably be some clouds that briefly interrupt the temperature rise, but high temperatures in the low elevations are still likely to be upper 90s to around 100. The record highs today and tomorrow in Denver are 96 and 98, and in Boulder they are 94 and 98.

Less hot weather (but still quite warm) is coming up this weekend with a small chance for afternoon thunderstorms. It looks like there will be a real cold front late Sunday, so Monday might actually be noticeably cooler. But at this point it appears that very warm or hot weather will return after Monday.

Cooler Friday; generally hot and dry into next week

1:15 PM MDT, Thursday June 10, 2021

A cold front tonight will make Friday cooler, but still warm. No rain is expected. And then we are in for a stretch of generally hot and dry weather. Look for around 90 in the lower elevations this weekend, and well into the 90s by early next week.

It is not unusual for late June and early July to bring a prolonged period of hot, dry weather, but it seemed to kick in a bit earlier that average this year. This is particularly bad news west of the continental divide where they did not benefit from a wet May like eastern Colorado did. And remember that some of the Front Range water comes from the West Slope. As you go west down the Colorado River, snowmelt contribution to Lake Powell (Utah) is forecast to be only 25% of average this snowmelt season.

Enjoy the weekend, and bring your sunscreen along when you go out.