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Weather Sioux Falls: Current forecast

Sioux Falls / South Dakota (SD) / United States

20.2 °C
Feels like 20.2 °C
Min 3 °C / Max 18 °C
Weather Sioux Falls: Clear, 20 °C Clear
34.6 km/h S
Wind
55 km/h S
Gusts
1001 hPa
Pressure
0 mm
Precipitation
47 %
Humidity
0
UV index

Pollen (today)

Hazel None
Alder None
Birch High
Oak High
Grass None
Mugwort None
Ragweed None
06:41 / 20:13
Sunrise / Sunset
06:25 / 21:01
Moonrise / Moonset
New Moon (0 %)
Moon phase

Updated: Apr 17, 2026, 9:45 CEST Apr 17, 2026, 2:45 CDT

Today's Summary

If you head out in Sioux Falls today, you'll see a clear sky. The thermometer currently shows 20.2°C. Take an umbrella with you today – you'll probably need it. During the day temperatures will range between 3.4°C and 17.6°C.

Hourly forecast – Sioux Falls, today

Apr 17, 02:00
20 °C
Clear
Sioux Falls Apr 17, 02:00: Clear, 20 °C
Apr 17, 03:00
18 °C
Clear
Sioux Falls Apr 17, 03:00: Clear, 18 °C
Apr 17, 04:00
18 °C
Clear
Sioux Falls Apr 17, 04:00: Clear, 18 °C
Apr 17, 05:00
18 °C
Overcast
Sioux Falls Apr 17, 05:00: Overcast, 18 °C
Apr 17, 06:00
16 °C
Overcast
Sioux Falls Apr 17, 06:00: Overcast, 16 °C
Apr 17, 07:00
11 °C
Patchy rain possible
Sioux Falls Apr 17, 07:00: Patchy rain possible, 11 °C
Apr 17, 08:00
9 °C
Overcast
Sioux Falls Apr 17, 08:00: Overcast, 9 °C
Apr 17, 09:00
7 °C
Patchy rain possible
Sioux Falls Apr 17, 09:00: Patchy rain possible, 7 °C
Apr 17, 10:00
6 °C
Patchy rain possible
Sioux Falls Apr 17, 10:00: Patchy rain possible, 6 °C
Apr 17, 11:00
7 °C
Patchy light drizzle
Sioux Falls Apr 17, 11:00: Patchy light drizzle, 7 °C
Apr 17, 12:00
5 °C
Patchy rain possible
Sioux Falls Apr 17, 12:00: Patchy rain possible, 5 °C
Apr 17, 13:00
5 °C
Overcast
Sioux Falls Apr 17, 13:00: Overcast, 5 °C
Apr 17, 14:00
6 °C
Overcast
Sioux Falls Apr 17, 14:00: Overcast, 6 °C
Apr 17, 15:00
7 °C
Overcast
Sioux Falls Apr 17, 15:00: Overcast, 7 °C
Apr 17, 16:00
8 °C
Overcast
Sioux Falls Apr 17, 16:00: Overcast, 8 °C
Apr 17, 17:00
8 °C
Cloudy
Sioux Falls Apr 17, 17:00: Cloudy, 8 °C
Apr 17, 18:00
8 °C
Partly cloudy
Sioux Falls Apr 17, 18:00: Partly cloudy, 8 °C
Apr 17, 19:00
8 °C
Overcast
Sioux Falls Apr 17, 19:00: Overcast, 8 °C
Apr 17, 20:00
6 °C
Cloudy
Sioux Falls Apr 17, 20:00: Cloudy, 6 °C
Apr 17, 21:00
6 °C
Partly cloudy
Sioux Falls Apr 17, 21:00: Partly cloudy, 6 °C
Apr 17, 22:00
5 °C
Cloudy
Sioux Falls Apr 17, 22:00: Cloudy, 5 °C
Apr 17, 23:00
4 °C
Partly cloudy
Sioux Falls Apr 17, 23:00: Partly cloudy, 4 °C
Apr 18, 00:00
4 °C
Partly cloudy
Sioux Falls Apr 18, 00:00: Partly cloudy, 4 °C
Apr 18, 01:00
2 °C
Partly cloudy
Sioux Falls Apr 18, 01:00: Partly cloudy, 2 °C
Time
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
00
01
Sioux Falls Apr 17, 02:00: Clear
Sioux Falls Apr 17, 03:00: Clear
Sioux Falls Apr 17, 04:00: Clear
Sioux Falls Apr 17, 05:00: Overcast
Sioux Falls Apr 17, 06:00: Overcast
Sioux Falls Apr 17, 07:00: Patchy rain possible
Sioux Falls Apr 17, 08:00: Overcast
Sioux Falls Apr 17, 09:00: Patchy rain possible
Sioux Falls Apr 17, 10:00: Patchy rain possible
Sioux Falls Apr 17, 11:00: Patchy light drizzle
Sioux Falls Apr 17, 12:00: Patchy rain possible
Sioux Falls Apr 17, 13:00: Overcast
Sioux Falls Apr 17, 14:00: Overcast
Sioux Falls Apr 17, 15:00: Overcast
Sioux Falls Apr 17, 16:00: Overcast
Sioux Falls Apr 17, 17:00: Cloudy
Sioux Falls Apr 17, 18:00: Partly cloudy
Sioux Falls Apr 17, 19:00: Overcast
Sioux Falls Apr 17, 20:00: Cloudy
Sioux Falls Apr 17, 21:00: Partly cloudy
Sioux Falls Apr 17, 22:00: Cloudy
Sioux Falls Apr 17, 23:00: Partly cloudy
Sioux Falls Apr 18, 00:00: Partly cloudy
Sioux Falls Apr 18, 01:00: Partly cloudy
Temperature (°C)
Chance of rain (%)
0
0
0
0
0
100
0
62
62
100
100
0
0
0
0
0
0
0
0
0
0
0
0
0
Precipitation
—
—
—
—
—
0.1 mm
—
0 mm
0 mm
0.3 mm
0.2 mm
—
—
—
—
—
—
—
—
—
—
—
—
—
Wind (km/h)
S
35
SSE
31
SSE
30
SSW
22
S
18
SSE
16
W
18
NNW
29
NNW
28
NNW
36
NNW
39
NNW
36
NNW
33
NNW
33
NNW
37
NNW
34
NW
29
NW
29
NW
32
NW
28
NNW
30
NNW
24
NNW
16
NW
11
Pressure (hPa)
1001
1000
999
998
999
999
1000
1002
1005
1007
1008
1009
1009
1009
1009
1010
1010
1010
1011
1013
1014
1015
1016
1017
Humidity (%)
47 %
68 %
76 %
81 %
82 %
65 %
64 %
65 %
67 %
74 %
72 %
76 %
66 %
54 %
44 %
38 %
38 %
42 %
43 %
47 %
47 %
50 %
55 %
56 %
Cloud cover (%)
0 %
0 %
0 %
88 %
91 %
100 %
100 %
100 %
100 %
56 %
87 %
100 %
100 %
99 %
90 %
69 %
48 %
95 %
64 %
47 %
86 %
41 %
46 %
29 %

14-day weather forecast – Sioux Falls

14-day trend for Sioux Falls: Forecasts suggest a marked cooldown in the second week. Lows can drop to around -2.6°C at night, with daytime highs up to 28.9°C.

Date
Apr 17
Apr 18
Apr 19
Apr 20
Apr 21
Apr 22
Apr 23
Apr 24
Apr 25
Apr 26
Apr 27
Apr 28
Apr 29
Apr 30
Sioux Falls April 17, 2026: Patchy rain possible
Sioux Falls April 18, 2026: Sunny
Sioux Falls April 19, 2026: Partly cloudy
Sioux Falls April 20, 2026: Sunny
Sioux Falls April 21, 2026: Sunny
Sioux Falls April 22, 2026: Sunny
Sioux Falls April 23, 2026: Partly cloudy
Sioux Falls April 24, 2026: Patchy rain possible
Sioux Falls April 25, 2026: Moderate rain
Sioux Falls April 26, 2026: Sunny
Sioux Falls April 27, 2026: Partly cloudy
Sioux Falls April 28, 2026: Sunny
Sioux Falls April 29, 2026: Partly cloudy
Sioux Falls April 30, 2026: Patchy rain possible
Temperature (°C)
Chance of rain (%)
70
0
0
0
0
0
0
71
80
0
0
0
0
82
Precipitation
0.7 mm
—
—
—
—
—
0 mm
0.2 mm
6.9 mm
—
—
—
0.1 mm
0.3 mm
Wind max (km/h)
39
35
17
31
27
36
36
24
34
25
19
10
19
24
Date Weather Min °C Max °C Sunrise Sunset Moonrise Moonset Moon phase
April 17, 2026 Sioux Falls April 17, 2026: Patchy rain possible Patchy rain possible 3 °C 18 °C 06:41 20:13 06:25 21:01 New Moon (0 %)
April 18, 2026 Sioux Falls April 18, 2026: Sunny Sunny -3 °C 10 °C 06:39 20:14 06:54 22:25 Waxing Crescent (1 %)
April 19, 2026 Sioux Falls April 19, 2026: Partly cloudy Partly cloudy 2 °C 16 °C 06:37 20:15 07:31 23:47 Waxing Crescent (3 %)
April 20, 2026 Sioux Falls April 20, 2026: Sunny Sunny 4 °C 22 °C 06:36 20:16 08:18 — Waxing Crescent (9 %)
April 21, 2026 Sioux Falls April 21, 2026: Sunny Sunny 10 °C 21 °C 06:34 20:17 09:19 01:00 Waxing Crescent (17 %)
April 22, 2026 Sioux Falls April 22, 2026: Sunny Sunny 10 °C 29 °C 06:32 20:18 10:30 02:01 Waxing Crescent (27 %)
April 23, 2026 Sioux Falls April 23, 2026: Partly cloudy Partly cloudy 18 °C 29 °C 06:31 20:20 11:47 02:48 Waxing Crescent (38 %)
April 24, 2026 Sioux Falls April 24, 2026: Patchy rain possible Patchy rain possible 13 °C 23 °C 06:29 20:21 13:03 03:23 First Quarter (49 %)
April 25, 2026 Sioux Falls April 25, 2026: Moderate rain Moderate rain 3 °C 7 °C 06:28 20:22 14:17 03:51 Waxing Moon (60 %)
April 26, 2026 Sioux Falls April 26, 2026: Sunny Sunny 2 °C 13 °C 06:26 20:23 15:28 04:13 Waxing Moon (70 %)
April 27, 2026 Sioux Falls April 27, 2026: Partly cloudy Partly cloudy 3 °C 13 °C 06:25 20:24 16:35 04:33 Waxing Moon (79 %)
April 28, 2026 Sioux Falls April 28, 2026: Sunny Sunny 3 °C 16 °C 06:23 20:26 17:42 04:51 Waxing Moon (87 %)
April 29, 2026 Sioux Falls April 29, 2026: Partly cloudy Partly cloudy 6 °C 13 °C 06:22 20:27 18:48 05:10 Waxing Moon (93 %)
April 30, 2026 Sioux Falls April 30, 2026: Patchy rain possible Patchy rain possible 8 °C 13 °C 06:20 20:28 19:54 05:30 Waxing Moon (97 %)
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