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Union County State Park, SD 14 Day Weather
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Union County State Park, SD Weather Forecast
Union County State Park, SD Weather Forecast Dated: 1228 PM Sat Aug 15 2026 (Union County State Park Time)
Sat, 15th Lo: 21°C69°F Hi: 27°C80°F |
Fog Saturday, temperatures as high as 80°F27°C, low temperature around 69°F21°C, chance of rain 44%, wind out of the N 7 mph12 km/h. Barometric pressure 30 in1016 mb, visibility 4 mi6 km, humidity 93%. |
Sun, 16th Lo: 18°C64°F Hi: 29°C85°F |
Sunny Sunday, temperatures as high as 85°F29°C, low temperature around 64°F18°C, chance of rain 5%, wind out of the NNW 11 mph17 km/h. Barometric pressure 30.06 in1018 mb, visibility 6 mi10 km, humidity 65%. |
| Mon, 17th Lo: 18°C65°F Hi: 32°C90°F |
Sunny Monday, temperatures as high as 90°F32°C, low temperature around 65°F18°C, chance of rain 5%, wind out of the S 12 mph19 km/h. Barometric pressure 29.97 in1015 mb, visibility 6 mi10 km, humidity 65%. |
Tue, 18th Lo: 19°C65°F Hi: 28°C83°F |
Thundery outbreaks in nearby Tuesday, temperatures as high as 83°F28°C, low temperature around 65°F19°C, chance of rain 84%, wind out of the NE 18 mph29 km/h. Barometric pressure 29.8 in1009 mb, visibility 5 mi8 km, humidity 85%. |
| Wed, 19th Lo: 17°C63°F Hi: 28°C83°F |
Sunny Wednesday, temperatures as high as 83°F28°C, low temperature around 63°F17°C, chance of rain 67%, wind out of the SE 9 mph14 km/h. Barometric pressure 29.88 in1012 mb, visibility 5 mi8 km, humidity 81%. |
| Thu, 20th Lo: 16°C61°F Hi: 27°C80°F |
Sunny Thursday, temperatures as high as 80°F27°C, low temperature around 61°F16°C, chance of rain 60%, wind out of the SSE 8 mph12 km/h. Barometric pressure 29.94 in1014 mb, visibility 5 mi8 km, humidity 81%. |
| Fri, 21st Lo: 16°C61°F Hi: 28°C82°F |
Sunny Friday, temperatures as high as 82°F28°C, low temperature around 61°F16°C, chance of rain 7%, wind out of the S 8 mph12 km/h. Barometric pressure 29.97 in1015 mb, visibility 6 mi10 km, humidity 75%. |
| Sat, 22nd Lo: 17°C62°F Hi: 31°C87°F |
Sunny Saturday, temperatures as high as 87°F31°C, low temperature around 62°F17°C, chance of rain 4%, wind out of the S 17 mph28 km/h. Barometric pressure 29.97 in1015 mb, visibility 6 mi10 km, humidity 62%. |
| Sun, 23rd Lo: 20°C69°F Hi: 33°C92°F |
Sunny Sunday, temperatures as high as 92°F33°C, low temperature around 69°F20°C, chance of rain 1%, wind out of the S 19 mph31 km/h. Barometric pressure 29.85 in1011 mb, visibility 6 mi10 km, humidity 47%. |
| Mon, 24th Lo: 21°C69°F Hi: 32°C90°F |
Sunny Monday, temperatures as high as 90°F32°C, low temperature around 69°F21°C, chance of rain 1%, wind out of the NE 15 mph24 km/h. Barometric pressure 29.97 in1015 mb, visibility 6 mi10 km, humidity 42%. |
Tue, 25th Lo: 17°C63°F Hi: 27°C81°F |
Partly Cloudy Tuesday, temperatures as high as 81°F27°C, low temperature around 63°F17°C, chance of rain 17%, wind out of the ESE 10 mph17 km/h. Barometric pressure 30.09 in1019 mb, visibility 6 mi10 km, humidity 48%. |
Wed, 26th Lo: 17°C62°F Hi: 25°C78°F |
Chance of showers Wednesday, temperatures as high as 78°F25°C, low temperature around 62°F17°C, chance of rain 57%, wind out of the ESE 15 mph23 km/h. Barometric pressure 30.09 in1019 mb, visibility 6 mi10 km, humidity 76%. |
| Thu, 27th Lo: 15°C58°F Hi: 26°C78°F |
Sunny Thursday, temperatures as high as 78°F26°C, low temperature around 58°F15°C, chance of rain 8%, wind out of the E 10 mph15 km/h. Barometric pressure 30.12 in1020 mb, visibility 6 mi10 km, humidity 72%. |
| Fri, 28th Lo: 16°C60°F Hi: 30°C86°F |
Sunny Friday, temperatures as high as 86°F30°C, low temperature around 60°F16°C, chance of rain 4%, wind out of the SE 8 mph13 km/h. Barometric pressure 30.09 in1019 mb, visibility 6 mi10 km, humidity 62%. |
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