Read More: Colorado Heat: Grand Junction's Record High May Surprise YouJuly in Grand Junction didn’t just feature hot afternoons; it featured weeks of relentless triple-digit or near-triple-digit heat. How July 2026 Compared With Grand Junction's Hottest JulysGrand Junction’s record-setting summer of 2023 was the year the city reached an all-time high of 107 degrees. The Heat Streak Grand Junction Won't Soon ForgetDoug Steele KKNN Facebook See Stunning Photos of Colorado's Snyder Mesa FireRead More: This Is The Hottest Temperature Ever Recorded in ColoradoIn July of 2026, Grand Junction reached triple-digit highs 15 times. Monsoon conditions passed over the Grand Valley in July, but Grand Junction did not benefit from measurable rainfall. LOOK: 10 Places To Stay Cool This Summer in Grand Junction, Colorado As summer temperatures arrive in the Grand Valley, Grand Junction has a number of places that can help keep you cool.