Sioux Falls Weather Year-Round — Best Time to Visit
Sioux Falls, United States has cool weather year-round. The best time to visit is July (score: 86/100). Annual average high: 13.4°C, total rainfall: 746mm.
When is the best time to visit Sioux Falls?
86
July is the best month to visit Sioux Falls with a travel score of 86/100 (Excellent).
Expect highs of 28.1°C, 8 rain days, and 13.3 hours of daily sunshine.
View July weather details →Travel Score by Month
45
Jan
49
Feb
58
Mar
66
Apr
74
May
81
Jun
86
Jul
85
Aug
84
Sep
70
Oct
58
Nov
44
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Sioux Falls each month?
13.4°C
Avg High
3.6°C
Avg Low
746mm
Annual Rain
How much rain does Sioux Falls get?
Sioux Falls receives 746mm of rain annually. The wettest month is typically June with 120mm, while January is the driest.
What is the weather like each month in Sioux Falls?
January
45
-4°C
Low: -13°C
5 rain days
Mixed
February
49
-1°C
Low: -10°C
4 rain days
Mixed
March
58
7°C
Low: -4°C
6 rain days
Mixed
April
66
14°C
Low: 3°C
10 rain days
Good
May
74
20°C
Low: 10°C
12 rain days
Good
June
81
26°C
Low: 16°C
11 rain days
Excellent
July
Best time to visit86
28°C
Low: 18°C
8 rain days
Excellent
August
85
27°C
Low: 17°C
8 rain days
Excellent
September
84
23°C
Low: 13°C
7 rain days
Excellent
October
70
15°C
Low: 6°C
7 rain days
Good
November
58
7°C
Low: -2°C
5 rain days
Mixed
December
44
-1°C
Low: -9°C
5 rain days
Mixed
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Data based on 1994–2024 averages · Last updated: 2024-12-31