Grand Junction, Colorado – Western Colorado’s late-summer heat streak breaks Thursday as a shift in moisture brings a rising threat of thunderstorms and showers—just in time to impact weekend travel and outdoor plans.
According to the National Weather Service in Grand Junction, isolated storms could begin Thursday afternoon, with storm activity ramping up into Friday and Saturday. These cells may bring gusty winds, brief downpours, and lightning, especially across the San Juans and along the I-70 corridor. Residents should secure outdoor gear, check travel routes, and stay weather-aware ahead of Friday evening events.
Daytime highs in Grand Junction will fall from the mid-90s Wednesday to the low 80s by Friday and Saturday, signaling the arrival of fall-like conditions. Thunderstorms may create slick roads and reduced visibility during peak travel times, especially through canyons and mountain passes.
Afternoon highs will hover 5–7 degrees below normal through the weekend, while nighttime temps drop to the upper 50s. Expect a slight lull Sunday before more showers return Monday.
While widespread flooding is not expected, brief downpours could still pose localized hazards. No spotter activation is planned yet, but more advisories may follow if conditions worsen.
Five-Day Forecast for Grand Junction, Colorado:
- Thursday: Increasing clouds. High near 92°F. 30% chance of storms by evening.
- Friday: Showers and storms likely after 3 p.m. High near 86°F. Low around 62°F.
- Saturday: Continued storm chances. High near 83°F. Low around 60°F.
- Sunday: Partly sunny. Slight storm chance. High near 83°F.
- Monday: Mix of sun and clouds. High around 82°F. Showers possible late.
