South Dakota weather outlook for the next 7 days
From Oct 29 to Nov 4, temperatures in South Dakota will range from 32° to 69°. The hottest day is Saturday, Oct 31, with a high of 69°; the coolest night is today (Oct 29), dipping to around 32°. Overall, daytime temperatures are expected to ease slightly towards the end of the period.
2 of the next 7 days are forecast to bring 0.04 in of rain or more: Monday, Nov 2 (~1.55 in) and Tuesday, Nov 3 (~0.77 in). The wettest day is Monday, Nov 2, with around 1.55 in of rain – watch out for flash flooding in low-lying areas.
The windiest day is Tuesday, Nov 3, with average speeds of about 26 mph and gusts of up to 45 mph. The UV index peaks at 3 (moderate) on Monday, Nov 2. Average daily humidity ranges from 38% to 94%.
- Chilly nights and early mornings: bring a jacket and dress in layers.
- Rainy days ahead: carry an umbrella or raincoat, slow down on wet roads and never drive through flooded roads – turn around, don't drown.
- Strong winds: secure outdoor furniture and trash cans, watch for falling branches and downed power lines, and drivers of high-profile vehicles should use caution.
Frequently asked questions about the weather in South Dakota
Will it rain in South Dakota in the next 24 hours?
The chance of rain in South Dakota over the next 24 hours is low, peaking at only about 31% at 1:00 PM. It should be fine for outdoor plans.
What is the weather in South Dakota tomorrow?
Tomorrow (Friday, Oct 30), South Dakota will see scattered clouds, with temperatures from 42° to 60°, a 48% chance of rain, humidity around 65% and winds of 12 mph. Light showers possible. Cool weather, bring a jacket.
Which day will be hottest in South Dakota this week?
According to the forecast, Saturday, Oct 31 will be the hottest day, with a high of about 69°. The coolest is today (Oct 29), with a low of about 32°.
Which day is best for going out or outdoor activities in South Dakota?
Sunday, Nov 1 is the best day of the next 7: overcast clouds, 51° to 66°, with a 0% chance of rain. Go in the morning or late afternoon to avoid the strongest sun.
Is this forecast accurate for every part of South Dakota?
The forecast is calculated for a representative point in South Dakota. In mountain and coastal areas, or during showers and thunderstorms, conditions can vary a lot from place to place. For tornadoes, hurricanes, floods and winter storms, always follow the official National Weather Service warnings.
Day by day in South Dakota
| Day | Weather | High / Low | Rain | Wind | Heat index / wind chill |
|---|---|---|---|---|---|
| Today |  Few clouds |
59° / 32° | 31% · 0 in | 14 mph | 58° · Not hazardous |
| Tomorrow |  Scattered clouds |
60° / 42° | 48% · 0 in | 12 mph | 59° · Not hazardous |
| Sat, Oct 31 |  Light rain |
69° / 50° | 43% · <0.01 in | 12 mph | 69° · Not hazardous |
| Sun, Nov 1 |  Overcast clouds |
66° / 51° | 0% · 0 in | 11 mph | 65° · Not hazardous |
| Mon, Nov 2 | Heavy intensity rain |
58° / 54° | 100% · 1.55 in | 22 mph | 58° · Not hazardous |
| Tue, Nov 3 | Moderate rain |
53° / 45° | 100% · 0.77 in | 26 mph | 51° · Not hazardous |
| Wed, Nov 4 | Broken clouds |
51° / 42° | 0% · 0 in | 22 mph | 48° · Not hazardous |
About the heat index and wind chill
The heat index is how hot it really feels when humidity is combined with the air temperature. The National Weather Service uses these levels: 80–90 °F caution, 90–103 °F extreme caution, 103–124 °F danger and 125 °F or more extreme danger. At "danger" level, heat cramps and heat exhaustion are likely with prolonged activity outdoors — drink water often, rest in the shade or air conditioning and avoid strenuous work in the afternoon.
The wind chill is how cold it feels on exposed skin when wind is combined with cold air (it applies at 50 °F and below). At a wind chill of −18 °F frostbite can develop in 30 minutes, at −35 °F in 10 minutes: cover your skin, wear layers, a hat and gloves.