Which is the hottest month in Sioux Falls?

The hottest time of year in Sioux Falls is normally July. Expect maximum daytime temperatures to reach 30°C with moderate heat and humidity.

Which month has the most rain in Sioux Falls?

In terms of rainfall, June is usually the wettest month in Sioux Falls with 92mm on average. There are normally 11 days in June with some rain.

When is it sunniest in Sioux Falls?

The sunniest time of year in Sioux Falls is normally July with bright sunshine on average for 74% of daylight hours; that's 11 hours of sunshine per day.

Best time to visit Sioux Falls

Q: When is the best time to visit Sioux Falls?

The best times to visit Sioux Falls, South Dakota are in May, June and September Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 8 hours or more.

The best times to visit Sioux Falls, South Dakota are in May, June and September based on our default weather conditions. Update your weather preferences to see which months best match.

Sioux Falls by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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When is the best time to visit Sioux Falls?

The best times to visit Sioux Falls, South Dakota are in May, June and September based on the following average weather conditions.

Maximum daytime temperature = 22 - 30°C [remove]
Daily hours of sunshine = 8 hours or more [remove]

Change the criteria to reflect your weather preferences.

2
Jan
2
Feb
2.5
Mar
2.5
Apr
5
May
5
Jun
4
Jul
4.5
Aug
5
Sep
2.5
Oct
1.5
Nov
1.5
Dec

Change criteria

Max Day Temperature (°C)

-4
Jan
-1
Feb
6
Mar
15
Apr
22
May
27
Jun
30
Jul
29
Aug
23
Sep
16
Oct
6
Nov
-2
Dec

Hours of Sunshine (daily)

6
Jan
6
Feb
7
Mar
8
Apr
9
May
11
Jun
11
Jul
10
Aug
8
Sep
7
Oct
5
Nov
4
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for South Dakota (Sioux Falls) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)