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Weather Sioux Falls: Current forecast

Sioux Falls / South Dakota (SD) / United States

91.9 °F
Feels like 95 °F
Min 70 °F / Max 100 °F
Weather Sioux Falls: Sunny, 92 °F Sunny
8.5 mph SSW
Wind
9.8 mph SSW
Gusts
1015 hPa
Pressure
0 mm
Precipitation
49 %
Humidity
9.5
UV index

Pollen (today)

Hazel None
Alder None
Birch None
Oak None
Grass High
Mugwort Moderate
Ragweed None
06:01 / 21:04
Sunrise / Sunset
09:44 / 23:01
Moonrise / Moonset
Waxing Crescent (15 %)
Moon phase

Updated: Jul 17, 2026, 21:06 CEST Jul 17, 2026, 14:06 CDT

Today's Summary

If you head out in Sioux Falls today, you'll see a sunny sky. The thermometer currently shows 33.3°C. Stay in the shade, wear light clothing and drink lots of water. During the day temperatures will range between 21°C and 37.9°C.

Hourly forecast – Sioux Falls, today

Jul 17, 15:00
99 °F
Sunny
Sioux Falls Jul 17, 15:00: Sunny, 99 °F
Jul 17, 16:00
97 °F
Sunny
Sioux Falls Jul 17, 16:00: Sunny, 97 °F
Jul 17, 17:00
93 °F
Sunny
Sioux Falls Jul 17, 17:00: Sunny, 93 °F
Jul 17, 18:00
91 °F
Sunny
Sioux Falls Jul 17, 18:00: Sunny, 91 °F
Jul 17, 19:00
87 °F
Sunny
Sioux Falls Jul 17, 19:00: Sunny, 87 °F
Jul 17, 20:00
84 °F
Clear
Sioux Falls Jul 17, 20:00: Clear, 84 °F
Jul 17, 21:00
82 °F
Clear
Sioux Falls Jul 17, 21:00: Clear, 82 °F
Jul 17, 22:00
80 °F
Clear
Sioux Falls Jul 17, 22:00: Clear, 80 °F
Jul 17, 23:00
81 °F
Clear
Sioux Falls Jul 17, 23:00: Clear, 81 °F
Jul 18, 00:00
76 °F
Clear
Sioux Falls Jul 18, 00:00: Clear, 76 °F
Jul 18, 01:00
75 °F
Clear
Sioux Falls Jul 18, 01:00: Clear, 75 °F
Jul 18, 02:00
74 °F
Clear
Sioux Falls Jul 18, 02:00: Clear, 74 °F
Jul 18, 03:00
72 °F
Clear
Sioux Falls Jul 18, 03:00: Clear, 72 °F
Jul 18, 04:00
69 °F
Clear
Sioux Falls Jul 18, 04:00: Clear, 69 °F
Jul 18, 05:00
70 °F
Sunny
Sioux Falls Jul 18, 05:00: Sunny, 70 °F
Jul 18, 06:00
75 °F
Sunny
Sioux Falls Jul 18, 06:00: Sunny, 75 °F
Jul 18, 07:00
79 °F
Sunny
Sioux Falls Jul 18, 07:00: Sunny, 79 °F
Jul 18, 08:00
83 °F
Sunny
Sioux Falls Jul 18, 08:00: Sunny, 83 °F
Jul 18, 09:00
87 °F
Sunny
Sioux Falls Jul 18, 09:00: Sunny, 87 °F
Jul 18, 10:00
90 °F
Sunny
Sioux Falls Jul 18, 10:00: Sunny, 90 °F
Jul 18, 11:00
93 °F
Sunny
Sioux Falls Jul 18, 11:00: Sunny, 93 °F
Jul 18, 12:00
96 °F
Sunny
Sioux Falls Jul 18, 12:00: Sunny, 96 °F
Jul 18, 13:00
97 °F
Sunny
Sioux Falls Jul 18, 13:00: Sunny, 97 °F
Jul 18, 14:00
97 °F
Sunny
Sioux Falls Jul 18, 14:00: Sunny, 97 °F
Time
15
16
17
18
19
20
21
22
23
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
Sioux Falls Jul 17, 15:00: Sunny
Sioux Falls Jul 17, 16:00: Sunny
Sioux Falls Jul 17, 17:00: Sunny
Sioux Falls Jul 17, 18:00: Sunny
Sioux Falls Jul 17, 19:00: Sunny
Sioux Falls Jul 17, 20:00: Clear
Sioux Falls Jul 17, 21:00: Clear
Sioux Falls Jul 17, 22:00: Clear
Sioux Falls Jul 17, 23:00: Clear
Sioux Falls Jul 18, 00:00: Clear
Sioux Falls Jul 18, 01:00: Clear
Sioux Falls Jul 18, 02:00: Clear
Sioux Falls Jul 18, 03:00: Clear
Sioux Falls Jul 18, 04:00: Clear
Sioux Falls Jul 18, 05:00: Sunny
Sioux Falls Jul 18, 06:00: Sunny
Sioux Falls Jul 18, 07:00: Sunny
Sioux Falls Jul 18, 08:00: Sunny
Sioux Falls Jul 18, 09:00: Sunny
Sioux Falls Jul 18, 10:00: Sunny
Sioux Falls Jul 18, 11:00: Sunny
Sioux Falls Jul 18, 12:00: Sunny
Sioux Falls Jul 18, 13:00: Sunny
Sioux Falls Jul 18, 14:00: Sunny
Temperature (°F)
Chance of rain (%)
1
1
1
1
1
2
3
3
2
3
4
4
5
7
6
3
2
1
1
1
1
1
1
1
Precipitation
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Wind (mph)
S
5
SSE
5
SSE
10
S
12
SSW
13
SSW
12
SSW
13
SSW
13
SSW
9
NNE
5
E
6
ENE
6
NE
8
NE
8
NE
9
NE
13
ENE
12
ENE
12
ENE
12
ENE
11
ENE
10
ENE
10
ENE
11
ENE
12
Pressure (hPa)
1009
1008
1008
1008
1009
1009
1009
1009
1010
1011
1011
1012
1012
1012
1013
1013
1013
1013
1013
1013
1012
1012
1011
1011
Humidity (%)
35 %
34 %
35 %
38 %
48 %
53 %
59 %
61 %
50 %
58 %
60 %
63 %
67 %
73 %
70 %
58 %
48 %
42 %
37 %
33 %
28 %
25 %
23 %
21 %
Cloud cover (%)
0 %
0 %
0 %
0 %
0 %
0 %
0 %
0 %
5 %
6 %
6 %
6 %
5 %
4 %
4 %
4 %
5 %
7 %
8 %
8 %
5 %
5 %
4 %
4 %

14-day weather forecast – Sioux Falls

14-day trend for Sioux Falls: Temperatures stay fairly stable over the period with no big swings. Lows can drop to around 13.2°C at night, with daytime highs up to 43.9°C.

Date
Jul 17
Jul 18
Jul 19
Jul 20
Jul 21
Jul 22
Jul 23
Jul 24
Jul 25
Jul 26
Jul 27
Jul 28
Jul 29
Jul 30
Sioux Falls July 17, 2026: Sunny
Sioux Falls July 18, 2026: Sunny
Sioux Falls July 19, 2026: Sunny
Sioux Falls July 20, 2026: Sunny
Sioux Falls July 21, 2026: Sunny
Sioux Falls July 22, 2026: Sunny
Sioux Falls July 23, 2026: Sunny
Sioux Falls July 24, 2026: Sunny
Sioux Falls July 25, 2026: Sunny
Sioux Falls July 26, 2026: Sunny
Sioux Falls July 27, 2026: Sunny
Sioux Falls July 28, 2026: Sunny
Sioux Falls July 29, 2026: Sunny
Sioux Falls July 30, 2026: Sunny
Temperature (°F)
Chance of rain (%)
3
1
17
3
1
1
2
2
2
1
36
36
42
1
Precipitation
—
—
0.2 mm
0 mm
—
—
—
—
—
—
0.5 mm
0.3 mm
0.9 mm
—
Wind max (mph)
13
14
15
26
19
11
14
13
16
19
19
19
18
19
Date Weather Min °F Max °F Sunrise Sunset Moonrise Moonset Moon phase
July 17, 2026 Sioux Falls July 17, 2026: Sunny Sunny 70 °F 100 °F 06:01 21:04 09:44 23:01 Waxing Crescent (15 %)
July 18, 2026 Sioux Falls July 18, 2026: Sunny Sunny 69 °F 97 °F 06:02 21:03 11:02 23:23 Waxing Crescent (23 %)
July 19, 2026 Sioux Falls July 19, 2026: Sunny Sunny 67 °F 106 °F 06:03 21:03 12:16 23:44 First Quarter (33 %)
July 20, 2026 Sioux Falls July 20, 2026: Sunny Sunny 76 °F 111 °F 06:04 21:02 13:29 Does not set today First Quarter (43 %)
July 21, 2026 Sioux Falls July 21, 2026: Sunny Sunny 59 °F 86 °F 06:05 21:01 14:41 00:06 First Quarter (53 %)
July 22, 2026 Sioux Falls July 22, 2026: Sunny Sunny 56 °F 90 °F 06:06 21:00 15:52 00:31 First Quarter (64 %)
July 23, 2026 Sioux Falls July 23, 2026: Sunny Sunny 62 °F 87 °F 06:07 20:59 17:00 01:00 Waxing Moon (74 %)
July 24, 2026 Sioux Falls July 24, 2026: Sunny Sunny 61 °F 96 °F 06:08 20:58 18:04 01:36 Waxing Moon (82 %)
July 25, 2026 Sioux Falls July 25, 2026: Sunny Sunny 65 °F 96 °F 06:09 20:57 18:59 02:20 Waxing Moon (90 %)
July 26, 2026 Sioux Falls July 26, 2026: Sunny Sunny 64 °F 100 °F 06:10 20:56 19:46 03:12 Waxing Moon (95 %)
July 27, 2026 Sioux Falls July 27, 2026: Sunny Sunny 72 °F 108 °F 06:11 20:55 20:24 04:11 Full Moon (99 %)
July 28, 2026 Sioux Falls July 28, 2026: Sunny Sunny 73 °F 108 °F 06:12 20:54 20:54 05:14 Full Moon (100 %)
July 29, 2026 Sioux Falls July 29, 2026: Sunny Sunny 69 °F 82 °F 06:13 20:53 21:19 06:19 Full Moon (99 %)
July 30, 2026 Sioux Falls July 30, 2026: Sunny Sunny 62 °F 87 °F 06:14 20:52 21:40 07:24 Waning Moon (96 %)
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