Brown County (Aberdeen)
May
Weather in Brown County, South Dakota for May 2026
Your guide to Brown County weather in May - trends and predictions
In general, the average temperature in Brown County at the beginning of May is 20.1 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 22.4 °F by the end of May.
Brown County experiences moderate rainfall in May, with an average of 8 rainy days and a total precipitation of 107.2 mm.
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Temperatures
Rain 🌧️
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23
Dry days
8
Rainy days
0
Snow days
21°/9°
Temperatures
22 km/h
Avg max wind
65 %
Avg humidity
Brown County Weather May
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Temperatures trend during May in Brown County
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May weather in Brown County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Moderate rain at times | 16° /7° | 2.3 mm | 4 | |
| May 2 |  Overcast | 13° /5° | 0 mm | 5 | |
| May 3 |  Sunny | 21° /3° | 0 mm | 7 | |
| May 4 | Sunny | 24° /7° | 0 mm | 7 | |
| May 5 | Sunny | 26° /9° | 0 mm | 7 | |
| May 6 |  Partly cloudy | 22° /9° | 0 mm | 7 | |
| May 7 | Partly cloudy | 19° /7° | 1.2 mm | 7 | |
| May 8 | Sunny | 25° /6° | 0 mm | 8 | |
| May 9 |  Cloudy | 27° /11° | 0 mm | 8 | |
| May 10 | Partly cloudy | 28° /8° | 0 mm | 8 | |
| May 11 | Sunny | 31° /17° | 0 mm | 8 | |
| May 12 | Sunny | 32° /19° | 0 mm | 8 | |
| May 13 | Sunny | 33° /19° | 0 mm | 8 | |
| May 14 | Cloudy | 30° /17° | 1.7 mm | 8 | |
| May 15 | Moderate or heavy rain shower | 20° /9° | 15 mm | 1 | |
| May 16 |  Patchy rain possible | 9° /5° | 3.1 mm | 1 | |
| May 17 | Overcast | 14° /4° | 0 mm | 5 | |
| May 18 | Overcast | 13° /2° | 0 mm | 7 | |
| May 19 | Moderate or heavy rain shower | 9° /4° | 48 mm | 1 | |
| May 20 | Moderate or heavy rain shower | 7° /3° | 29.3 mm | 1 | |
| May 21 | Moderate rain at times | 7° /1° | 6.2 mm | 1 | |
| May 22 | Partly cloudy | 18° /4° | 0.2 mm | 9 | |
| May 23 | Overcast | 18° /5° | 0 mm | 5 | |
| May 24 | Patchy rain possible | 17° /9° | 0.2 mm | 3 | |
| May 25 |  Fog | 18° /8° | 0 mm | 3 | |
| May 26 | Overcast | 21° /9° | 0 mm | 7 | |
| May 27 | Overcast | 19° /9° | 0 mm | 4 | |
| May 28 | Fog | 20° /10° | 0 mm | 5 | |
| May 29 | Sunny | 25° /11° | 0 mm | 9 | |
| May 30 | Sunny | 26° /11° | 0 mm | 9 | |
| May 31 | Sunny | 28° /14° | 0 mm | 9 | |
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Important Notice
Our weather forecast for Brown County 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 Brown County forecast closer to your planned date for the most up-to-date weather information.
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Brown County in May - FAQ
What are the expected maximum and minimum temperatures in Brown County during May?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Brown County during May?
Significant rainfall exceeding 107.2 mm is expected in Brown County during May, occurring over more than 8 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Brown County during May?
The average wind speed in Brown County during May is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Brown County
Explore the daily rainfall trends and prepare for Brown Countys May weather 💧
Typically, Brown County has 8 rainy days in May with a total of 107.2 mm of rainfall.
UV exposure in Brown County during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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Where is Brown County?Get accurate weather forecasts for Brown County, located at latitude 45.465 and longitude -98.486. Stay updated with localized weather information tailored for Brown County.
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