South Dakota Weather Forecast
South Dakota weather: 68°F, overcast. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
14-day forecast for South Dakota
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Wed, Sep 30 | ☁️ Overcast | 81° / 53° | 1% | 6 mph | 5 |
| Thu, Oct 1 | ☁️ Overcast | 64° / 55° | 6% | 21 mph | 1 |
| Fri, Oct 2 | ☁️ Overcast | 72° / 53° | 19% | 20 mph | 5 |
| Sat, Oct 3 | 🌦️ Light drizzle | 77° / 57° | 1% · 0,0 in | 23 mph | 5 |
| Sun, Oct 4 | ☁️ Overcast | 69° / 51° | 2% | 15 mph | 5 |
| Mon, Oct 5 | ⛅ Partly cloudy | 76° / 52° | 1% | 21 mph | 5 |
| Tue, Oct 6 | ☁️ Overcast | 82° / 61° | 1% | 19 mph | 4 |
| Wed, Oct 7 | ⛅ Partly cloudy | 72° / 55° | 1% | 10 mph | 5 |
| Thu, Oct 8 | ☁️ Overcast | 80° / 58° | 2% | 12 mph | 5 |
| Fri, Oct 9 | ⛅ Partly cloudy | 91° / 60° | 1% | 15 mph | 5 |
| Sat, Oct 10 | ☁️ Overcast | 85° / 58° | 4% | 24 mph | 4 |
| Sun, Oct 11 | ☁️ Overcast | 55° / 48° | 10% | 22 mph | 4 |
| Mon, Oct 12 | ☁️ Overcast | 62° / 41° | 10% | 15 mph | 4 |
| Tue, Oct 13 | ☁️ Overcast | 73° / 52° | 6% | 21 mph | 4 |
The two-week trend
Cooling. The second half of the window averages 37°F cooler than the days immediately ahead.
The window averages 71°F against a September normal of 79°F - 39°F below.
The next 7 days look unusually dry - roughly 1% of a normal September week (0,0 in against 0,4 in).
What this means for South Dakota
Today is about average for September. The forecast high of 81°F is in line with the 79°F typical for this month.
Rain is very unlikely today - plans do not need a backup.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 91°F.
What to pack, what to skip
- Sunglasses, a brimmed hat and SPF 30+
- If your dates are flexible, avoid January, February and December - historically the least comfortable months here.
See the South Dakota forecast by time range
South Dakota weather - more answers
Explore South Dakota
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Frequently asked questions
Where is South Dakota?
South Dakota is a state in United States. Its coordinates are 44.3683, -100.351. It lies in North America.
What is the weather like in South Dakota right now?
It is currently 68°F (20°C) with overcast. Humidity is 73% and wind is 2 mph.
When is the best time to visit South Dakota?
June, July, August and September offer the most comfortable conditions in South Dakota, which has a continental climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is South Dakota in?
South Dakota observes America/Chicago (UTC-05:00). The local time is 9:58 PM.
How many people live in South Dakota?
South Dakota has a population of approximately 920.000.
What are the top things to do in South Dakota?
Popular options include Badlands National Park, Wind Cave National Park, Mount Rushmore, Custer State Park and Theodore Roosevelt National Park.
What places are in South Dakota?
South Dakota covers 4 places in this atlas, including Badlands National Park, Wind Cave National Park, Mount Rushmore and Custer State Park.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (us-states) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated September 30, 2026 at 9:58 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
