South Dakota (Sioux Falls)
May
Weather in South Dakota for May 2027
Your guide to South Dakota weather in May - trends and predictions
Snowfall in South Dakota during May is quite rare, with fewer than 2 snowy days on average.
In general, the average temperature in South Dakota at the beginning of May is 18.1 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 23.9 °C by the end of May.
South Dakota in May brings notable rainfall, with an average of 17 rainy days and a total precipitation of 104.5 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Snow Forecast ❄️
Temperatures
Rain 🌧️
More
13
Dry days
17
Rainy days
1
Snow days
20°/9°
Temperatures
23 km/h
Avg max wind
64 %
Avg humidity
South Dakota Weather May
Move between months or click on a day
What’s the Weather Like in South Dakota This May?
Discover the average temperatures and weather trends across South Dakota’s cities this May.
Temperatures trend during May in South Dakota
See the weather trend as well as the moving average line
May weather in South Dakota day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| May 1 |  Overcast | 17° /6° | 0 mm | 0 cm | |
| May 2 |  Patchy rain possible | 16° /4° | 4.2 mm | 0 cm | |
| May 3 | Overcast | 18° /6° | 1.4 mm | 0 cm | |
| May 4 | Patchy rain possible | 19° /7° | 1.6 mm | 0 cm | |
| May 5 |  Sunny | 18° /5° | 0 mm | 0 cm | |
| May 6 | Overcast | 19° /6° | 6.6 mm | 0 cm | |
| May 7 |  Thundery outbreaks possible | 20° /7° | 0 mm | 0 cm | |
| May 8 | Light rain shower | 21° /7° | 1.5 mm | 0 cm | |
| May 9 | Light rain shower | 21° /9° | 1.2 mm | 0 cm | |
| May 10 |  Patchy light drizzle | 23° /9° | 0.1 mm | 0 cm | |
| May 11 |  Partly cloudy | 27° /9° | 0.1 mm | 0 cm | |
| May 12 | Thundery outbreaks possible | 26° /13° | 1.1 mm | 0 cm | |
| May 13 | Sunny | 25° /11° | 0.5 mm | 0 cm | |
| May 14 | Sunny | 26° /13° | 0 mm | 0 cm | |
| May 15 | Light rain shower | 23° /13° | 22.6 mm | 0 cm | |
| May 16 |  Mist | 21° /9° | 0 mm | 0 cm | |
| May 17 | Sunny | 22° /10° | 6.5 mm | 0 cm | |
| May 18 | Patchy light drizzle | 18° /8° | 1.2 mm | 0 cm | |
| May 19 | Light rain shower | 15° /8° | 9.9 mm | 0 cm | |
| May 20 | Sunny | 16° /3° | 0 mm | 0 cm | |
| May 21 | Sunny | 16° /5° | 12 mm | 6.2 cm | |
| May 22 |  Cloudy | 19° /9° | 5.6 mm | 0 cm | |
| May 23 | Partly cloudy | 21° /9° | 8.9 mm | 0 cm | |
| May 24 | Sunny | 21° /11° | 1.3 mm | 0 cm | |
| May 25 | Patchy rain possible | 23° /12° | 1.2 mm | 0 cm | |
| May 26 | Patchy rain possible | 23° /12° | 0.1 mm | 0 cm | |
| May 27 | Sunny | 23° /12° | 4.1 mm | 0 cm | |
| May 28 | Partly cloudy | 23° /11° | 0.3 mm | 0 cm | |
| May 29 |  Moderate rain at times | 23° /12° | 0.8 mm | 0 cm | |
| May 30 |  Heavy rain at times | 25° /14° | 3.2 mm | 0 cm | |
| May 31 | Moderate or heavy rain shower | 27° /15° | 7.3 mm | 0 cm | |
| Next | |||||
Important Notice
Our weather forecast for South Dakota in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the South Dakota forecast closer to your planned date for the most up-to-date weather information.
Change Month
South Dakota in May - FAQ
What are the expected maximum and minimum temperatures in South Dakota during May?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in South Dakota during May?
Significant rainfall exceeding 104.5 mm is expected in South Dakota during May, occurring over more than 17 days. Preparing for wet conditions is recommended in your planning.
Will it snow in South Dakota in May 2027?
South Dakota typically sees 6.23 cm of snowfall during May.
What are the typical wind conditions in South Dakota during May?
The average wind speed in South Dakota during May is 23 km/h, suggesting breezy to windy conditions, depending on your activities.
South Dakota snow forecast May 2027
Track daily snowfall levels and discover South Dakota’s snowy potential this May ❄️
On average, South Dakota sees 1 snowy days during May, with approximately 6.2 cm of total snowfall.
May rainfall patterns in South Dakota
Explore the daily rainfall trends and prepare for South Dakotas May weather 💧
Typically, South Dakota has 17 rainy days in May with a total of 104.5 mm of rainfall.
UV exposure in South Dakota during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
Counties in South Dakota
Select a county for an accurate weather forecast
Top locations in South Dakota
Select a location for an accurate weather forecast
More Locations Quick links
More South Dakota weather pages
You are here
Where is South Dakota?Get accurate weather forecasts for South Dakota, located at latitude 43.55 and longitude -96.7. Stay updated with localized weather information tailored for South Dakota.
Found a mistake?
We appreciate your attention to details. Tell us here.