Weather in Grand Junction in September
Grand Junction, United States averages a high of 27°C (80.6°F) and low of 12.1°C (53.8°F) in September, with 7 rain days and 11.6 hours of daily sunshine. Travel score: 90.1/100 (Excellent). The best time to visit Grand Junction is June.
High
27°C81°F
Low
12°C54°F
🌧️
7
rain days
☀️
11.6
hrs/day sunshine
💧
43%
humidity
90— Excellent
September in Grand Junction is warm and mostly dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in Grand Junction?
How much does it rain in Grand Junction in September?
Grand Junction receives an average of 61.6mm of rainfall across 7 rainy days in September. The annual total is 526.5mm.
What should I pack for Grand Junction in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 27°C
🧴
Sunscreen SPF 30+
12 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Evening jacket or cardigan
Temperature drops 15°C from day to night
🎉Visiting United States in September?
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Data based on 1994–2024 averages · Last updated: 2024-12-31