Sioux Falls, SD 14-Day Forecast
South Dakota, United States 🇺🇸
86°
Sunny right now
Today: high 100°, low 70°
Updated just now
Sioux Falls weather for the next 14 days
Saturday, July 18
Sunny High 97° Low 69°Precipitation
1%
· 0.0 in
Max wind
14 mph
Humidity
44%
UV index
10 - Very High
Sunrise / sunset
06:02 AM / 09:03 PM
Sunday, July 19
Sunny High 106° Low 68°Precipitation
17%
· 0.01 in
Max wind
15 mph
Humidity
54%
UV index
9 - Very High
Sunrise / sunset
06:03 AM / 09:03 PM
Monday, July 20
Sunny High 111° Low 76°Precipitation
3%
· 0.0 in
Max wind
26 mph
Humidity
42%
UV index
10 - Very High
Sunrise / sunset
06:04 AM / 09:02 PM
Tuesday, July 21
Sunny High 86° Low 59°Precipitation
1%
· 0.0 in
Max wind
19 mph
Humidity
37%
UV index
8 - Very High
Sunrise / sunset
06:05 AM / 09:01 PM
Wednesday, July 22
Sunny High 90° Low 56°Precipitation
1%
· 0.0 in
Max wind
10 mph
Humidity
33%
UV index
8 - Very High
Sunrise / sunset
06:06 AM / 09:00 PM
Thursday, July 23
Sunny High 87° Low 62°Precipitation
2%
· 0.0 in
Max wind
14 mph
Humidity
50%
UV index
8 - Very High
Sunrise / sunset
06:07 AM / 08:59 PM
Friday, July 24
Sunny High 96° Low 61°Precipitation
2%
· 0.0 in
Max wind
13 mph
Humidity
51%
UV index
9 - Very High
Sunrise / sunset
06:08 AM / 08:58 PM
Saturday, July 25
Sunny High 96° Low 66°Precipitation
2%
· 0.0 in
Max wind
16 mph
Humidity
45%
UV index
9 - Very High
Sunrise / sunset
06:09 AM / 08:57 PM
Sunday, July 26
Sunny High 100° Low 64°Precipitation
1%
· 0.0 in
Max wind
20 mph
Humidity
42%
UV index
9 - Very High
Sunrise / sunset
06:10 AM / 08:56 PM
Monday, July 27
Sunny High 108° Low 72°Precipitation
36%
· 0.02 in
Max wind
19 mph
Humidity
50%
UV index
10 - Very High
Sunrise / sunset
06:11 AM / 08:55 PM
Tuesday, July 28
Sunny High 108° Low 73°Precipitation
36%
· 0.01 in
Max wind
19 mph
Humidity
57%
UV index
10 - Very High
Sunrise / sunset
06:12 AM / 08:54 PM
Wednesday, July 29
Sunny High 82° Low 69°Precipitation
42%
· 0.03 in
Max wind
18 mph
Humidity
69%
UV index
7 - High
Sunrise / sunset
06:13 AM / 08:53 PM
Thursday, July 30
Sunny High 87° Low 62°Precipitation
1%
· 0.0 in
Max wind
20 mph
Humidity
45%
UV index
8 - Very High
Sunrise / sunset
06:14 AM / 08:52 PM
Sioux Falls 14-day outlook: the story
The warmest day of Sioux Falls's 14-day outlook is Monday, July 20 with a high near 111°F (44°C); the coolest night comes Wednesday, July 22, dipping to 56°F (13°C). Temperatures hold fairly steady from week to week. Highs over the next two weeks average 97°F (36°C), about 14°F (8°C) above the typical July high of 83°F (28°C).
No day in the outlook currently carries a strong precipitation signal. For the weekend, expect Saturday 97°F (36°C) and sunny / Sunday 106°F (41°C) and sunny.
For typical conditions month by month, see the Sioux Falls climate & average temperatures guide.
Sioux Falls forecast questions
Will it rain in Sioux Falls this week?
No day in the current 14-day outlook shows a strong rain signal for Sioux Falls.
What will be the warmest day in Sioux Falls over the next 14 days?
Monday, July 20, with a forecast high near 111°F (44°C).
How accurate is a 14-day forecast for Sioux Falls?
Days 1-3 are highly reliable, days 4-7 capture the overall pattern well, and days 8-14 indicate trends rather than exact figures - check back as the date approaches; this page refreshes throughout the day.
Average temperatures in Sioux Falls by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 27° | 11° | 5 | 1.0 in | 6.1 h/day | 75% |
| February | 31° | 13° | 5 | 0.9 in | 7.9 h/day | 66% |
| March | 45° | 26° | 6 | 2.2 in | 8.3 h/day | 66% |
| April | 56° | 36° | 10 | 3.6 in | 9.2 h/day | 62% |
| May | 69° | 49° | 12 | 4.3 in | 10.3 h/day | 65% |
| June | 81° | 62° | 10 | 4.0 in | 12.8 h/day | 64% |
| July | 83° | 65° | 7 | 2.6 in | 13.2 h/day | 70% |
| August | 81° | 63° | 9 | 3.2 in | 11.4 h/day | 72% |
| September | 76° | 58° | 8 | 2.7 in | 10.1 h/day | 67% |
| October | 59° | 42° | 7 | 2.5 in | 8.0 h/day | 64% |
| November | 45° | 29° | 5 | 1.5 in | 6.9 h/day | 68% |
| December | 33° | 18° | 6 | 1.5 in | 5.9 h/day | 73% |
14-day forecasts nearby