Mandan Weather in September

Mandan in September averages 23°C (73°F) during the day and 8°C (46°F) at night. Some rainfall is typical for this time of year.

Rainfall in Mandan in September

Past climate data indicates that roughly 8 days will see rain, totalling around 47 mm (1.9 in) for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.

Temperature in Mandan in September

September is one of the better months to visit Mandan. Expect 23°C (73°F) during the day and 8°C (46°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With overnight lows of 8°C (46°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Mandan in September

With approximately 245 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 Mandan.

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 Mandan's climate page.

Mandan Temperature in September

Min Temperature 8°C (46°F)  

Max Temperature 23°C (73°F)  

Chance of Rain 27%  

Precipitation 47 mm (1.9 in)  

Rainy days 8 days  

Humidity 63% *  

Sunshine 245 hours *  

Percentage Sunshine 65% *  

* Data from: Bismarck, the United States of America (8 KM, 5 Miles).

What to Wear in Mandan in September

For Mandan in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Mandan in September

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

Cycling

10/10

Walking

10/10

Barbeque

9/10

Camping

5/10

Outdoor sports

10/10

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 Mandan's climate page.

More climate data for Mandan

Temperature Rainfall Sunshine Humidity

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