Grand Junction Weather in August

Grand Junction in August sees very high daytime temperatures of 32°C (90°F) and nighttime lows of 17°C (63°F). Low rainfall is typical, with around 28 mm (1.1 in) for the month.

Rainfall in Grand Junction in August

Looking at the last 30 years, the data shows about 9 days with rain, averaging 28 mm (1.1 in) for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Grand Junction in August

The temperature in Grand Junction in August is excellent. Daytime highs reach 32°C (90°F), with nights dropping to 17°C (63°F). It's usually most comfortable outside during the morning and later in the day. With overnight lows of 17°C (63°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Grand Junction in August

Expect sunny days throughout the month, with an estimated 327 hours of sunshine. This makes it a pleasant time to visit Grand Junction.

Wind Speed in Grand Junction in August

In August, average wind speeds reach 4 m/s (8 knots), leading to light to moderate breezes. Conditions vary from day to day, with both calm and windier periods.

If you prefer enjoying temperate temperatures and rain-free days, April, May, September and October typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.