Weather Alert
Union County Weather Warning NWS WEATHER ALERT FOR THE UNION COUNTY, SD AREA - Issued: 238 PM CDT Sat Oct 3 2026 Union County Weather Warning

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Union County, SD Weather - Hour by Hour Forecast

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Union County, SD Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Mostly Clear. Temperature is 77°F25°C, dew point 50°F10°C, humidity 38%. Wind direction is N at 0 mph0 km/h with visibility of 10 mi16 km. Barometric pressure is 30.07 in1018 mb.
Tonight - Mostly clear. Lows in the upper 40s. West winds 5 to 10 mph, becoming northwest after midnight... Full Forecast
Sunday - Mostly sunny. Highs in the upper 60s. Northwest winds around 5 mph... Full Forecast

Union County Hourly Weather

24 Hour Forecast Scroll
Sat, Oct 03
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Union County, SD Hourly Weather - Clear - 5:00 PM Union County, SD Hourly Weather - Clear - 6:00 PM Union County, SD Hourly Weather - Clear - 7:00 PM Union County, SD Hourly Weather - Clear - 8:00 PM Union County, SD Hourly Weather - Clear - 9:00 PM Union County, SD Hourly Weather - Clear - 10:00 PM Union County, SD Hourly Weather - Clear - 11:00 PM Union County, SD Hourly Weather - Clear - 12:00 AM Union County, SD Hourly Weather - Clear - 1:00 AM Union County, SD Hourly Weather - Clear - 2:00 AM Union County, SD Hourly Weather - Clear - 3:00 AM Union County, SD Hourly Weather - Clear - 4:00 AM Union County, SD Hourly Weather - Clear - 5:00 AM Union County, SD Hourly Weather - Clear - 6:00 AM Union County, SD Hourly Weather - Clear - 7:00 AM Union County, SD Hourly Weather - Clear - 8:00 AM Union County, SD Hourly Weather - Clear - 9:00 AM Union County, SD Hourly Weather - Clear - 10:00 AM Union County, SD Hourly Weather - Clear - 11:00 AM Union County, SD Hourly Weather - Clear - 12:00 PM Union County, SD Hourly Weather - Clear - 1:00 PM Union County, SD Hourly Weather - Clear - 2:00 PM Union County, SD Hourly Weather - Clear - 3:00 PM Union County, SD Hourly Weather - Clear - 4:00 PM
Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear
69°F21°C 68°F20°C 66°F19°C 63°F17°C 61°F16°C 58°F14°C 56°F13°C 55°F13°C 53°F12°C 52°F11°C 50°F10°C 49°F9°C 48°F9°C 47°F8°C 46°F8°C 48°F9°C 51°F11°C 53°F12°C 57°F14°C 60°F16°C 64°F18°C 65°F18°C 67°F19°C 68°F20°C
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2% 2% 2% 7% 7% 7% 7% 7% 7% 2% 2% 2% 2% 2% 2% 0% 0% 0% 0% 0% 0% 3% 3% 3%
51°F11°C 51°F11°C 51°F11°C 51°F11°C 51°F11°C 51°F11°C 51°F11°C 50°F10°C 50°F10°C 49°F9°C 48°F9°C 47°F8°C 46°F8°C 45°F7°C 44°F7°C 44°F7°C 45°F7°C 45°F7°C 44°F7°C 43°F6°C 42°F6°C 42°F6°C 41°F5°C 41°F5°C
53% 55% 58% 65% 70% 77% 83% 83% 90% 89% 93% 93% 93% 93% 93% 86% 80% 74% 62% 53% 45% 43% 39% 37%
SW SSE SSE SW SSW W NW NW NNW NNW N N N N N N N N N N NNW NNW NNW NNW
11 mph 6 mph 6 mph 6 mph 5 mph 5 mph 5 mph 4 mph 4 mph 4 mph 4 mph 4 mph 4 mph 4 mph 4 mph 4 mph 5 mph 5 mph 5 mph 4 mph 4 mph 4 mph 5 mph 5 mph
10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km
Hour (CDT)
Weather
Clouds
Temperature
Precip. Type
POP
Dewpoint
Humidity
Wind Direction
Wind Speed
Visibility
POP = Probability of Precipitation. ** Indicates missing data/values from KLRJ model statistics.

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Prob Precip % = Probability of Precipitation.

Union County 36 Hour Forecast

POP = Probability of Precipitation. ** Indicates missing data/values from model statistics.

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