S
M
T
W
T
F
S
27
34°
17°
28
34°
17°
29
33°
16°
30
31°
11°
31
30°
5°
1
24°
7°
2
23°
10°
3
28°
15°
4
32°
14°
5
32°
4°
6
29°
1°
7
19°
9°
8
23°
8°
9
31°
3°
10
25°
9°
11
24°
10°
12
28°
13°
13
29°
13°
14
30°
14°
15
31°
15°
16
31°
0°
17
37°
16°
18
27°
3°
19
26°
-3°
20
Hist. Avg.
27°
8°
21
Hist. Avg.
27°
8°
22
Hist. Avg.
27°
8°
23
Hist. Avg.
27°
8°
24
Hist. Avg.
27°
8°
25
Hist. Avg.
28°
8°
26
Hist. Avg.
28°
8°
27
Hist. Avg.
28°
8°
28
Hist. Avg.
28°
8°
29
Hist. Avg.
28°
8°
30
Hist. Avg.
28°
9°
31
Hist. Avg.
28°
9°
1
Hist. Avg.
28°
9°
2
Hist. Avg.
29°
9°
3
Hist. Avg.
29°
9°
4
Hist. Avg.
29°
10°
5
Hist. Avg.
29°
10°
6
Hist. Avg.
29°
10°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in Sioux Falls
Sioux Falls's January 2027 forecast shows daily high temperatures ranging from 19° to 37°, with overnight lows between -3° and 17°. The average high for January is 29° with an average low of 9°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how January weather will actually feel in Sioux Falls. See also: February | March | April.
