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Flat Lake, SD 14 Day Weather
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Flat Lake, SD Weather Forecast
Flat Lake, SD Weather Forecast Dated: 651 PM Sat Aug 08 2026 (Flat Lake Time)
Sat, 8th Lo: 12°C53°F Hi: 27°C81°F |
Sunny Saturday, temperatures as high as 81°F27°C, low temperature around 53°F12°C, chance of rain 6%, wind out of the SSW 12 mph19 km/h. Barometric pressure 29.88 in1012 mb, visibility 6 mi10 km, humidity 73%. |
| Sun, 9th Lo: 17°C62°F Hi: 31°C88°F |
Sunny Sunday, temperatures as high as 88°F31°C, low temperature around 62°F17°C, chance of rain 57%, wind out of the NNE 13 mph21 km/h. Barometric pressure 29.83 in1010 mb, visibility 6 mi10 km, humidity 57%. |
| Mon, 10th Lo: 15°C58°F Hi: 33°C92°F |
Sunny Monday, temperatures as high as 92°F33°C, low temperature around 58°F15°C, chance of rain 57%, wind out of the ESE 12 mph19 km/h. Barometric pressure 29.85 in1011 mb, visibility 6 mi10 km, humidity 46%. |
| Tue, 11th Lo: 16°C60°F Hi: 32°C89°F |
Sunny Tuesday, temperatures as high as 89°F32°C, low temperature around 60°F16°C, chance of rain 36%, wind out of the N 9 mph14 km/h. Barometric pressure 29.85 in1011 mb, visibility 6 mi10 km, humidity 63%. |
| Wed, 12th Lo: 15°C59°F Hi: 29°C85°F |
Sunny Wednesday, temperatures as high as 85°F29°C, low temperature around 59°F15°C, chance of rain 17%, wind out of the NE 14 mph22 km/h. Barometric pressure 29.91 in1013 mb, visibility 6 mi10 km, humidity 41%. |
| Thu, 13th Lo: 12°C54°F Hi: 26°C79°F |
Sunny Thursday, temperatures as high as 79°F26°C, low temperature around 54°F12°C, chance of rain 2%, wind out of the NNE 11 mph18 km/h. Barometric pressure 30.06 in1018 mb, visibility 6 mi10 km, humidity 44%. |
| Fri, 14th Lo: 12°C53°F Hi: 29°C85°F |
Sunny Friday, temperatures as high as 85°F29°C, low temperature around 53°F12°C, chance of rain 1%, wind out of the SE 15 mph24 km/h. Barometric pressure 30.12 in1020 mb, visibility 6 mi10 km, humidity 39%. |
| Sat, 15th Lo: 20°C68°F Hi: 33°C92°F |
Sunny Saturday, temperatures as high as 92°F33°C, low temperature around 68°F20°C, chance of rain 36%, wind out of the SSW 18 mph29 km/h. Barometric pressure 29.97 in1015 mb, visibility 6 mi10 km, humidity 44%. |
Sun, 16th Lo: 19°C66°F Hi: 28°C82°F |
Chance of showers Sunday, temperatures as high as 82°F28°C, low temperature around 66°F19°C, chance of rain 69%, wind out of the NE 11 mph17 km/h. Barometric pressure 29.97 in1015 mb, visibility 6 mi10 km, humidity 68%. |
| Mon, 17th Lo: 16°C61°F Hi: 33°C91°F |
Sunny Monday, temperatures as high as 91°F33°C, low temperature around 61°F16°C, chance of rain 4%, wind out of the ESE 12 mph19 km/h. Barometric pressure 30 in1016 mb, visibility 6 mi9 km, humidity 64%. |
| Tue, 18th Lo: 18°C64°F Hi: 36°C97°F |
Sunny Tuesday, temperatures as high as 97°F36°C, low temperature around 64°F18°C, chance of rain 36%, wind out of the WSW 13 mph21 km/h. Barometric pressure 29.88 in1012 mb, visibility 6 mi10 km, humidity 60%. |
| Wed, 19th Lo: 17°C63°F Hi: 26°C79°F |
Sunny Wednesday, temperatures as high as 79°F26°C, low temperature around 63°F17°C, chance of rain 65%, wind out of the NW 9 mph15 km/h. Barometric pressure 29.97 in1015 mb, visibility 6 mi9 km, humidity 74%. |
Thu, 20th Lo: 16°C61°F Hi: 30°C85°F |
Partly Cloudy Thursday, temperatures as high as 85°F30°C, low temperature around 61°F16°C, chance of rain 4%, wind out of the NW 8 mph13 km/h. Barometric pressure 29.97 in1015 mb, visibility 6 mi10 km, humidity 55%. |
| Fri, 21st Lo: 15°C60°F Hi: 33°C91°F |
Partly Cloudy Friday, temperatures as high as 91°F33°C, low temperature around 60°F15°C, chance of rain 36%, wind out of the SE 14 mph23 km/h. Barometric pressure 29.91 in1013 mb, visibility 6 mi9 km, humidity 56%. |
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