Mandan
Weather by month
Current –

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.

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).

Mandan Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Mandan - and find the best time to visit.

Best Places in the United States of America in September

Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

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

Mandan 3-Day Forecast

Popular in September

Where to go in September - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.