Weather in Pennington County, South Dakota for May 2026
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Until now, May 2026 in Pennington County is cooler than usual, with temperatures averaging 17.8 °F, this is -3.1 °F below the typical seasonal average.
The forecast for the next days in Pennington County predicts temperatures to be around 22 °F, close to the historical average.
In general, the average temperature in Pennington County at the beginning of May is 17.7 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 21.4 °F by the end of May.
The climate of Pennington County in May is notably wet, with an average of 11 rainy days, and a total of 119.4 mm of precipitation.
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Pennington County Weather May
Temperatures trend during May in Pennington County
May weather in Pennington County day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Patchy rain possible | 15° /3° | 0.2 mm | 6 | |
| May 2 |  Sunny | 20° /3° | 0 mm | 7 | |
| May 3 | Sunny | 21° /7° | 0.6 mm | 7 | |
| May 4 | Sunny | 20° /8° | 0.1 mm | 8 | |
| May 5 | Patchy rain possible | 16° /6° | 3.7 mm | 6 | |
| May 6 | Patchy rain possible | 14° /2° | 0.1 mm | 7 | |
| May 7 |  Overcast | 18° /4° | 0.6 mm | 7 | |
| May 8 | Overcast | 22° /7° | 0 mm | 7 | |
| May 9 |  Cloudy | 20° /11° | 0 mm | 7 | |
| May 10 | Sunny | 25° /9° | 0 mm | 9 | |
| May 11 | Sunny | 32° /12° | 0.1 mm | 9 | |
| May 12 | Sunny | 28° /14° | 0.1 mm | 9 | |
| May 13 | Cloudy | 26° /18° | 0.2 mm | 6 | |
| May 14 | Sunny | 27° /12° | 0 mm | 6.2 | |
| May 15 | Sunny | 26° /10° | 0 mm | 0 | |
| May 16 | Sunny | 24° /7° | 0.1 mm | 5 | |
| May 17 |  Moderate rain | 16° /9° | 6.5 mm | 3 | |
| May 18 | Sunny | 18° /5° | 0 mm | 3 | |
| May 19 |  Partly cloudy | 18° /6° | 0 mm | 4 | |
| May 20 | Patchy rain possible | 18° /8° | 1.3 mm | 3 | |
| May 21 | Patchy rain possible | 16° /4° | 0.6 mm | 2 | |
| May 22 | Sunny | 29° /4° | 0 mm | 5 | |
| May 23 | Sunny | 33° /15° | 0 mm | 6 | |
| May 24 | Patchy rain possible | 26° /13° | 0.2 mm | 5 | |
| May 25 | Patchy rain possible | 17° /7° | 0.1 mm | 3 | |
| May 26 | Patchy rain possible | 23° /12° | 1.1 mm | 3 | |
| May 27 | Patchy rain possible | 17° /9° | 0.3 mm | 3 | |
| May 28 |  Thundery outbreaks possible | 18° /10° | 0 mm | 4 | |
| May 29 | Sunny | 21° /9° | 0 mm | 6 | |
| May 30 | Sunny | 27° /12° | 0 mm | 7 | |
| May 31 | Sunny | 27° /15° | 0 mm | 7 | |
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Pennington County in May - FAQ
What are the expected maximum and minimum temperatures in Pennington County during May?
How much rainfall should be expected in Pennington County during May?
What are the typical wind conditions in Pennington County during May?
May rainfall patterns in Pennington County
UV exposure in Pennington County during May
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Where is Pennington County?Get accurate weather forecasts for Pennington County, located at latitude 44.081 and longitude -103.231. Stay updated with localized weather information tailored for Pennington County.