May
Weather in South Dakota for May 2025
Your guide to South Dakota weather in May - trends and predictions
In general, the average temperature in South Dakota at the beginning of May is 16.9 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 22.6 °F by the end of May.
The climate of South Dakota in May is notably wet, with an average of 15 rainy days.
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16
Dry days
15
Rainy days
0
Snow days
22°/10°
Temperatures
24 km/h
Avg max wind
68 %
Avg humidity
South Dakota in May average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  18° | 2 15° | 3  15° | 4 14° | |||
| 5  17° | 6 21° | 7  18° | 8 17° | 9 16° | 10  20° | 11  22° |
| 12 25° | 13 19° | 14 20° | 15 19° | 16  21° | 17 25° | 18 21° |
| 19 19° | 20 21° | 21 25° | 22  22° | 23 25° | 24 22° | 25 22° |
| 26 22° | 27 22° | 28 22° | 29  23° | 30  23° | 31 24° |
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Temperatures trend during May in South Dakota
See the weather trend as well as the moving average line
May weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 | Patchy rain possible | 18° /7° | 0.1 mm | 4 | |
| May 2 | Patchy rain possible | 15° /8° | 12.6 mm | 4 | |
| May 3 | Overcast | 15° /6° | 4.1 mm | 4 | |
| May 4 | Patchy rain possible | 14° /6° | 4.9 mm | 3 | |
| May 5 | Sunny | 17° /6° | 0 mm | 5 | |
| May 6 | Light rain shower | 21° /10° | 19.8 mm | 5 | |
| May 7 | Thundery outbreaks possible | 18° /8° | 0.1 mm | 4 | |
| May 8 | Light rain shower | 17° /8° | 4.5 mm | 4 | |
| May 9 | Light rain shower | 16° /9° | 3.6 mm | 4 | |
| May 10 | Patchy light drizzle | 20° /10° | 0.3 mm | 5 | |
| May 11 | Partly cloudy | 22° /9° | 0 mm | 6 | |
| May 12 | Thundery outbreaks possible | 25° /12° | 2.6 mm | 6 | |
| May 13 | Patchy rain possible | 19° /11° | 1.4 mm | 4 | |
| May 14 | Sunny | 20° /9° | 0 mm | 6 | |
| May 15 | Light rain shower | 19° /12° | 2.3 mm | 4 | |
| May 16 | Mist | 21° /9° | 0 mm | 5 | |
| May 17 | Sunny | 25° /12° | 0 mm | 7 | |
| May 18 | Patchy light drizzle | 21° /14° | 0.2 mm | 5 | |
| May 19 | Light rain shower | 19° /12° | 2.2 mm | 4 | |
| May 20 | Sunny | 21° /4° | 0 mm | 6 | |
| May 21 | Sunny | 25° /9° | 0 mm | 7 | |
| May 22 | Cloudy | 22° /11° | 0.1 mm | 5 | |
| May 23 | Partly cloudy | 25° /12° | 1.5 mm | 6 | |
| May 24 | Sunny | 22° /11° | 0.7 mm | 6 | |
| May 25 | Patchy rain possible | 22° /11° | 0.4 mm | 5 | |
| May 26 | Partly cloudy | 22° /12° | 0.1 mm | 6 | |
| May 27 | Sunny | 22° /11° | 0.6 mm | 6 | |
| May 28 | Partly cloudy | 22° /10° | 0.3 mm | 6 | |
| May 29 | Moderate rain at times | 23° /11° | 1 mm | 6 | |
| May 30 | Heavy rain at times | 23° /15° | 6.2 mm | 5 | |
| May 31 | Moderate or heavy rain shower | 24° /15° | 11.3 mm | 5 | |
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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.
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 22° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in South Dakota during May?
Moderate rainfall is anticipated in South Dakota during May, with a total of 83.5 mm spread over approximately 15 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in South Dakota during May?
The average wind speed in South Dakota during May is 24 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in South Dakota
Explore the daily rainfall trends and prepare for South Dakotas May weather 💧
UV exposure in South Dakota during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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