Delta Weather in September

With daytime temperatures of 28°C (82°F) and nighttime lows of 9°C (48°F), September in Delta brings high temperatures during the day. It is also the wettest month of the year, so pack an umbrella.

Rainfall in Delta in September

This month is known for heavy rainfall, so don't forget your umbrella to stay dry. Historically, the month has about 7 days of rain, averaging 29 mm (1.1 in) in total. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Delta in September

Delta in September has perfect weather. Days reach 28°C (82°F) and nights cool to 9°C (48°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights drop to 9°C (48°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.

Sunshine in Delta in September

With approximately 293 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Delta.

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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 Delta's climate page.

Delta Temperature in September

Min Temperature 9°C (48°F)  

Max Temperature 28°C (82°F)  

Chance of Rain 23%  

Precipitation 29 mm (1.1 in)  

Rainy days 7 days  

Humidity 39% *  

Sunshine 293 hours *  

Percentage Sunshine *  

* Data from: Grand Junction, the United States of America (57 KM, 35 Miles).

What to Wear in Delta 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. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Delta 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

5/10

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 Delta's climate page.

More climate data for Delta

Temperature Rainfall Sunshine Humidity

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