Sioux Falls, South Dakota weather
United States · America/Chicago · 43.54, -96.73
“Use my location” asks your browser for your coordinates so we can load your local forecast and any official warnings for your area. Your coordinates are used for that request only: they are not stored on our servers, sold, or used to build a profile. If your browser blocks location, we fall back to an approximate city-level lookup from your IP address.
Sioux Falls, SD Weather Today
Current conditions, hourly and 7 day forecast, official severe weather alerts, and air quality for Sioux Falls, South Dakota. Every section shows where the data came from and when it was last checked.
Your briefing — take action
Sioux Falls, South Dakota
- Right now
- Freeze Warning in effect for Lyon; Sioux; Plymouth; Woodbury; Lincoln; Lyon; Murray; Pipestone; Rock; Dixon; Dakota; Kingsbury; Brookings; Miner; Lake; Moody; Hanson; McCook; Minnehaha; Hutchinson; Turner; Lincoln; Bon Homme; Yankton; Clay; Union.Official warning
- Next few hours
- No rain in the forecast for the next few hours.Forecast
- Your day
- Best outdoor window: 4 PM to 5 PM.Our reading
What officials say to do
- Take steps now to protect tender plants from the cold.
Wording from NWS Sioux Falls SD. Read the official warning
What happens next
- NowFreeze Warning covers Lyon; Sioux; Plymouth; Woodbury; Lincoln; Lyon; Murray; Pipestone; Rock; Dixon; Dakota; Kingsbury; Brookings; Miner; Lake; Moody; Hanson; McCook; Minnehaha; Hutchinson; Turner; Lincoln; Bon Homme; Yankton; Clay; Union.Official warning
- NextOfficial warning runs until 3:00 AM.Official warning
Official warnings for this location come from NOAA / National Weather Service. Lines marked Our reading are WeatherSignal’s reading of the measurements and forecast, not an official statement.
Sioux Falls, South Dakota
45°
Mainly clear
Feels like 37° · High 51° · Low 45°
Partly cloudy sky here right now. Nothing falling.
Cold and partly cloudy this afternoon. 45° and feels like 37°. Today tops out near 51°.
- Sunset 1:00 PM
- Feels like 37°
- Rain next 6 hrs 0%
Next few hours
Now
45°
—
11 AM
45°
—
12 PM
47°
—
1 PM
48°
—
2 PM
50°
—
- Rain chance
- 0%
- Wind
- 18 mph NNW
- Humidity
- 56%
- Air quality
- No reading
Source updated: 4:29:06 PM · WeatherSignal checked: 4:29:06 PM
What matters today
Six quick answers for Sioux Falls. Tap Why? on any of them to see the reasoning.
Umbrella
Nah (Good)
Best time
12 PM (Good)
Dog walk
5 PM (Good)
Car wash
Go for it (Good)
Cookout
Doable with a plan (Mixed)
Windows
Keep them up (Not good)
Today's Signal
Rough day
48/100
A rough day outside: the cold, the wind and poor visibility are working against you.
Feels like 37° · Wind 18 mph · Visibility 0.0 mi · Active Freeze Warning
Today is about 12° cooler than the rest of the week.
See exactly how this number was worked out
Every location starts at 100. Points come off for heat, cold, rain, wind, UV, humidity, poor visibility, and any official alert. Nothing is ever added back.
- Starting score100
- Feels like 37°: cold-8
- Wind 18 mph-4
- Visibility 0.0 mi-10
- Active Freeze Warning-30
- Final Signal48
Next 12 hours
No big swings coming in the next 12 hours.
- 1 PMSunset
- 4 PMWarmest stretch · 51°
- 10 PMCoolest stretch · 39°
- 11 AM—45 degrees, 0 percent chance of rain
- 12 PM—47 degrees, 0 percent chance of rain
- 1 PM—48 degrees, 0 percent chance of rain
- 2 PM—50 degrees, 0 percent chance of rain
- 3 PM—51 degrees, 0 percent chance of rain
- 4 PM—51 degrees, 0 percent chance of rain
- 5 PM—51 degrees, 0 percent chance of rain
- 6 PM—49 degrees, 0 percent chance of rain
- 7 PM—44 degrees, 0 percent chance of rain
- 8 PM—43 degrees, 0 percent chance of rain
- 9 PM—41 degrees, 0 percent chance of rain
- 10 PM—39 degrees, 0 percent chance of rain
The line is temperature by hour. The number under each hour is the chance of rain. Scroll sideways for the full 12 hours.
Next change
Nothing major changes for a while
Temperatures hold between about 39° and 51°. There is no meaningful rain signal in the next several hours.
WeatherSignal NOW: Sioux Falls, South Dakota
One number for everything happening around you, from 0 to 100.
81
WATCHFUL
Severe weather is what is pulling this number down: official advisory in effect.
Tap any line to see exactly what added or subtracted points. Every rule is published on our methodology page. This is an informational signal, not a safety rating: official warnings always come first.
What this means
Generated from the forecast values above using fixed rules: not an AI guess.
- A Freeze Warning issued by NWS Sioux Falls SD is active for Lyon.
- No significant precipitation is expected in the next 24 hours.
Next 24 hours
Will it rain during your commute? When does the storm arrive?
See all 48 hours (2 days) — free
| Time | Condition | Temp | Feels | Precip % | Amount | Wind | Humidity |
|---|---|---|---|---|---|---|---|
| 11 AM | Mainly clear | 45° | 37° | 0% | 0.00″ | 18 NNW | 56% |
| 12 PM | Clear sky | 47° | 40° | 0% | 0.00″ | 16 NNW | 51% |
| 1 PM | Clear sky | 48° | 42° | 0% | 0.00″ | 15 NNW | 48% |
| 2 PM | Clear sky | 50° | 45° | 0% | 0.00″ | 14 NNW | 45% |
| 3 PM | Clear sky | 51° | 46° | 0% | 0.00″ | 13 NNW | 42% |
| 4 PM | Clear sky | 51° | 47° | 0% | 0.00″ | 11 NNW | 42% |
| 5 PM | Clear sky | 51° | 47° | 0% | 0.00″ | 10 NNW | 44% |
| 6 PM | Clear sky | 49° | 46° | 0% | 0.00″ | 7 NNW | 50% |
| 7 PM | Clear sky | 44° | 41° | 0% | 0.00″ | 5 NW | 60% |
| 8 PM | Clear sky | 43° | 39° | 0% | 0.00″ | 6 NW | 67% |
| 9 PM | Clear sky | 41° | 38° | 0% | 0.00″ | 5 WNW | 73% |
| 10 PM | Clear sky | 39° | 36° | 0% | 0.00″ | 5 W | 77% |
| 11 PM | Clear sky | 38° | 35° | 0% | 0.00″ | 4 W | 80% |
| 12 AM | Clear sky | 37° | 35° | 0% | 0.00″ | 3 SW | 80% |
| 1 AM | Clear sky | 37° | 32° | 0% | 0.00″ | 5 SSW | 83% |
| 2 AM | Clear sky | 37° | 31° | 0% | 0.00″ | 7 SSW | 82% |
| 3 AM | Clear sky | 37° | 31° | 0% | 0.00″ | 8 SSW | 77% |
| 4 AM | Clear sky | 37° | 31° | 0% | 0.00″ | 9 SSW | 75% |
| 5 AM | Clear sky | 37° | 30° | 0% | 0.00″ | 10 SSW | 74% |
| 6 AM | Clear sky | 37° | 30° | 0% | 0.00″ | 11 SSW | 72% |
| 7 AM | Clear sky | 37° | 30° | 0% | 0.00″ | 11 SSW | 72% |
| 8 AM | Clear sky | 37° | 30° | 0% | 0.00″ | 12 SSW | 71% |
| 9 AM | Clear sky | 41° | 33° | 0% | 0.00″ | 12 SSW | 65% |
| 10 AM | Clear sky | 44° | 39° | 0% | 0.00″ | 12 SSW | 58% |
7-day forecast
Confidence decreases the further out you look.
Today
Clear sky
51° / 45°
- Precip:
- 0% · 0.00″
- Wind:
- 18 mph
- UV:
- 3.6
- Sun:
- 1 AM to 1 PM
Sat, Oct 17
Clear sky
60° / 37°
- Precip:
- 0% · 0.00″
- Wind:
- 16 mph
- UV:
- 3.9
- Sun:
- 1 AM to 1 PM
Sun, Oct 18
Clear sky
64° / 44°
- Precip:
- 0% · 0.00″
- Wind:
- 15 mph
- UV:
- 3.7
- Sun:
- 1 AM to 1 PM
Mon, Oct 19
Mainly clear
59° / 45°
- Precip:
- 0% · 0.00″
- Wind:
- 11 mph
- UV:
- 0.0
- Sun:
- 1 AM to 1 PM
Tue, Oct 20
Clear sky
63° / 47°
- Precip:
- 0% · 0.00″
- Wind:
- 12 mph
- UV:
- 0.0
- Sun:
- 1 AM to 1 PM
Lower confidence: long-range outlook, not a certainty.
Wed, Oct 21
Clear sky
67° / 54°
- Precip:
- 0% · 0.00″
- Wind:
- 13 mph
- UV:
- 0.0
- Sun:
- 1 AM to 1 PM
Lower confidence: long-range outlook, not a certainty.
Thu, Oct 22
Clear sky
69° / 50°
- Precip:
- 0% · 0.00″
- Wind:
- 7 mph
- UV:
- 0.0
- Sun:
- 1 AM to 1 PM
Lower confidence: long-range outlook, not a certainty.
Forecasts describe likely conditions, not guaranteed outcomes. Official warnings from your national weather service always take precedence over anything shown here.
Sioux Falls hourly weather
Hour by hour, out to eight days ahead.
Sioux Falls 7 day forecast
Highs, lows and rain chance for the week.
Air quality detail
Pollutants, category, and official guidance.