Sioux Falls, South Dakota weather

United States · America/Chicago · 43.54, -96.73

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Sioux Falls, South Dakota hourly forecast

Every hour our forecast source publishes for Sioux Falls, South Dakota — 48 hours ahead, free, with no account and no subscription. Temperature, feels like, rain chance and amount, wind and gusts, humidity, cloud cover.

Today at a glance

Warmest hour: 4 PM at 51°F
Coolest hour: 11 PM at 38°F
Strongest wind: 8 AM near 22 mph
No hour on this day has a rain chance above 50%.

Source updated: 1:29:04 PM · WeatherSignal checked: 1:29:04 PM

Source: Open-Meteo (national weather-service models)

Hour by hour

All times shown in America/Chicago. Pick a day to see its hours.

Hourly weather forecast for Sioux Falls, South Dakota
Time	Condition	Temp	Feels	Precip %	Amount	Wind	Humidity	Cloud
8 AM	Overcast	43°	34°	0%	0.00″	22 mph NNW	68%	94%
9 AM	Overcast	43°	34°	0%	0.00″	22 mph N	64%	99%
10 AM	Partly cloudy	43°	35°	0%	0.00″	20 mph N	61%	65%
11 AM	Mainly clear	45°	37°	0%	0.00″	18 mph NNW	56%	14%
12 PM	Clear sky	47°	40°	0%	0.00″	16 mph NNW	51%	4%
1 PM	Clear sky	48°	42°	0%	0.00″	15 mph NNW	48%	2%
2 PM	Clear sky	50°	45°	0%	0.00″	14 mph NNW	45%	0%
3 PM	Clear sky	51°	46°	0%	0.00″	13 mph NNW	42%	0%
4 PM	Clear sky	51°	47°	0%	0.00″	11 mph NNW	42%	0%
5 PM	Clear sky	51°	47°	0%	0.00″	10 mph NNW	44%	0%
6 PM	Clear sky	49°	46°	0%	0.00″	7 mph NNW	50%	0%
7 PM	Clear sky	44°	41°	0%	0.00″	5 mph NW	60%	0%
8 PM	Clear sky	43°	39°	0%	0.00″	6 mph NW	67%	0%
9 PM	Clear sky	41°	38°	0%	0.00″	5 mph WNW	73%	0%
10 PM	Clear sky	39°	36°	0%	0.00″	5 mph W	77%	0%
11 PM	Clear sky	38°	35°	0%	0.00″	4 mph W	80%	0%

What this forecast is built from

Source: MET Norway Locationforecast (backup source)
How far it goes: 48 hours (2.0 days), one value per 60 minutes
The primary forecast source was unavailable, so this location is running on the backup source, which publishes a shorter hourly horizon.
Columns are hidden when the source does not publish that measurement for this location, rather than showing an invented number.

Hourly timing is the least certain part of any forecast, and days six through eight are far less certain than tomorrow. Rain can arrive earlier or later than the hour shown. Official warnings always take precedence.

Planning your week in Sioux Falls, South Dakota

The warmest afternoon ahead is Thursday, reaching about 69°F.
The coldest night ahead dips to about 37°F.
This is a dry stretch — most days show rain chances under 20%, good for outdoor plans.
The breeziest day looks like today, with sustained wind near 22 mph.

Common questions about Sioux Falls, South Dakota weather

How accurate is the Sioux Falls, South Dakota forecast?: The next 48 hours are usually reliable on temperature and sky cover, with timing that can shift by an hour or two. Days three and four are dependable for the overall pattern. Beyond that, treat the numbers as a planning direction rather than a promise — we label confidence on every day so you can judge for yourself.
When will it rain in Sioux Falls, South Dakota?: No day in the current outlook has a rain chance above 40%, so conditions look favorable for outdoor plans across the week.
Where does this forecast come from?: Forecast values come from national weather model data, and official warnings come from the National Weather Service. We show the source and the last-updated time on every page, and we never invent a number the source did not publish — missing measurements are hidden, not guessed.
How often is this page updated?: The forecast refreshes whenever the source model publishes new data, typically several times a day. The freshness note near the top of the page shows exactly when the numbers you are looking at were issued.

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