Summer Weather Forecast For Boulder: See Predictions

BOULDER, CO — With the official start of summer just weeks away, planning has begun for the residents of Boulder who look forward to the warmer weather and increased opportunity for outdoor fun.

Specific, long-term weather predictions can help with that planning, and the private weather company AccuWeather has released its 2021 summer weather forecast.

Daily forecasts for Boulder are listed until early August. After that, AccuWeather lists the historical average temperature for the rest of the summer. Here's what Boulderites can expect:

June: The month will begin with temperatures in the high 70s, and rise up into the high 80s from mid-June onward. Thunderstorms are expected at least once a week throughout the month.

July: Temperatures will fluctuate between the high 80s and low 90s throughout the month, and several thunderstorms are expected each week.

If there’s a popular summer festival or other traditional event, provide the weather forecast for those dates.

Boulder County can expect hot, dry weather throughout the summer, weather officials said. Residents are expected to face drought and wildfires.

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Nationally, AccuWeather predicts an eventful summer similar to the 2020 season, which brought record-breaking deaths and damage in the form of wildfires and hurricanes.

Meteorologists are also expecting the return of derechos, a weather phenomenon sometimes referred to as an “inland hurricane.” The term became more widely known about last summer when one swept through Iowa with winds faster than 100 miles per hour on August 10.

“We are still very nervous about the possibility of derechos developing based on the pattern that we’re forecasting” Paul Pastelok, AccuWeather’s chief long-range forecaster, said in a statement.

This year, the most extreme weather is expected in the early fall, Pastelok added.

Although the number of tropical storms is predicted to be down from recent years, AccuWeather says tornadoes are likely to be on the rise from May until July.

Pastelok said anywhere from 1,300 to 1,400 tornadoes could be reported by the end of the year, a slight increase from 2020.

“Across the Plains, we’re still going to be watching for the possibility of a flare-up of storms, mainly central areas on north during the month of May, June and early July,” Pastelok said in a statement.

These storms are expected to extend farther east than normal, Pastelok added, due to drought conditions that range from Montana to the Texas Panhandle.