South Dakota weather
Today's sky, the hour-by-hour rain chance and the 16-day forecast for South Dakota, United States. Like most weather services, we show South Dakota at one spot: Sioux Falls, its largest city. At 5:15 PM local time it was cloudy and 16°C (60°F). Little to no rain in the next 24 hours. Best months for weather: May–Sep.
Current conditions
- Clouds
- 100%
- Chance of rain
- 4%
- Rain
- 0.0 mm/h
Hourly Forecast
Little to no rain in the next 24 hours
Daily Forecast
Best Time to Visit
Peak season May–SepOff season Nov–Mar
About Sioux Falls weather
Is it raining in Sioux Falls right now?
No. It’s cloudy and 16° right now. Little to no rain in the next 24 hours.
What’s the weather like in Sioux Falls this week?
Over the next 7 days, expect highs of 13–20° and lows of 5–13°. Rain is likely on 3 of 7 days (Saturday, Monday, Tuesday). The driest day looks like Thursday.
Has it been raining in Sioux Falls lately?
In the past 7 days, Sioux Falls had 3 rainy days and 21.4 mm of rain in total.
What should I pack for Sioux Falls?
For the coming week, bring an umbrella or rain jacket and a warm layer for the evenings.
South Dakota weather by month
When is the best time to visit South Dakota?
Based on weather alone, the best time to visit South Dakota is May–Sep, according to NASA's 2001–2025 climate averages. Nov–Mar tends to be the least pleasant. Average highs run from -3°C (27°F) in January to 31°C (87°F) in July.
What is the rainiest month in South Dakota?
June is the wettest month, with about 107 mm (4.2 in) of rain on average. January is the driest, with about 12 mm (0.5 in).
What is the hottest month in South Dakota?
July is the warmest, with average highs of 31°C (87°F) and lows of 18°C (65°F). January is the coolest, with highs of -3°C (27°F) and lows of -12°C (10°F).
Does South Dakota have a rainy season?
Not a strong one. No month averages more than 150 mm of rain; the wettest is June at about 107 mm (4.2 in).
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis for Sioux Falls), forecast and current conditions from Open-Meteo. Page updated . How we rate months
Compare places in South Dakota
Weather can differ a lot within South Dakota: coasts, hills and mountains each have their own climate.
| Place | Best months | Rainy months | Highs | Rain a year |
|---|---|---|---|---|
| Sioux Falls | May–Sep | None | -3–31°C | 668 mm |
| Rapid City | May–Sep | None | 3–33°C | 451 mm |
| Aberdeen | May–Sep | None | -4–31°C | 569 mm |
| Brookings | May–Sep | None | -4–30°C | 637 mm |
| Watertown | May–Sep | None | -5–30°C | 628 mm |
| Mitchell | May–Sep | None | -1–32°C | 652 mm |