Grand Junction Weather in September

Grand Junction in September averages 28°C (82°F) during the day and 12°C (54°F) at night. Some rainfall is typical for this time of year.

Rainfall in Grand Junction in September

Historically, September sees about 7 days of rain, with a monthly average of 29 mm (1.1 in). The odd shower may pass through, but it usually doesn't amount to much. A largely dry month overall.

Temperature in Grand Junction in September

Grand Junction in September is worth a visit. The temperature is perfect, with 28°C (82°F) during the day and 12°C (54°F) at night. This kind of day-to-night contrast is typical for this time of year. Nights drop to around 12°C (54°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Grand Junction in September

Enjoy a sunny month with about 293 hours of sunshine, the clear skies make Grand Junction even more beautiful.

Wind Speed in Grand Junction in September

Wind speeds average 4 m/s (8 knots) during September. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.

If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Grand Junction.

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• January
• February
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• September
• October
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• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Grand Junction's climate page.

Grand Junction Temperature in September

Min Temperature 12°C (54°F)  

Max Temperature 28°C (82°F)  

Chance of Rain 22%  

Precipitation 29 mm (1.1 in)  

Rainy days 7 days  

Humidity 39% *  

Windspeed 4 m/s (8 knots) *  

Sunshine 293 hours *  

Percentage Sunshine *  

* Data from: Grand Junction, the United States of America (6 KM, 3 Miles).

What to Wear in Grand Junction in September

Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Some rain is possible, so pack something to handle light showers. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Grand Junction in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

10/10

Cycling

8/10

Walking

8/10

Barbeque

10/10

Camping

10/10

Outdoor sports

8/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Grand Junction's climate page.

More climate data for Grand Junction

Temperature Rainfall Sunshine Humidity Wind Speed

See the full Grand Junction climate overview or explore weather in the United States of America.