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Post Lake, SD Weather Forecast
Post Lake, SD Weather Forecast Dated: 751 PM Thu Aug 20 2026 (Post Lake Time)
Thu, 20th Lo: 17°C63°F Hi: 33°C91°F |
Sunny Thursday, temperatures as high as 91°F33°C, low temperature around 63°F17°C, chance of rain 4%, wind out of the W 14 mph23 km/h. Barometric pressure 29.88 in1012 mb, visibility 6 mi10 km, humidity 63%. |
| Fri, 21st Lo: 17°C63°F Hi: 31°C89°F |
Sunny Friday, temperatures as high as 89°F31°C, low temperature around 63°F17°C, chance of rain 1%, wind out of the ENE 10 mph17 km/h. Barometric pressure 29.97 in1015 mb, visibility 6 mi10 km, humidity 38%. |
| Sat, 22nd Lo: 19°C66°F Hi: 32°C89°F |
Sunny Saturday, temperatures as high as 89°F32°C, low temperature around 66°F19°C, chance of rain 2%, wind out of the ENE 15 mph24 km/h. Barometric pressure 30.03 in1017 mb, visibility 6 mi10 km, humidity 39%. |
Sun, 23rd Lo: 18°C65°F Hi: 31°C89°F |
Overcast Sunday, temperatures as high as 89°F31°C, low temperature around 65°F18°C, chance of rain 17%, wind out of the SE 20 mph33 km/h. Barometric pressure 29.88 in1012 mb, visibility 6 mi10 km, humidity 46%. |
| Mon, 24th Lo: 21°C70°F Hi: 34°C92°F |
Sunny Monday, temperatures as high as 92°F34°C, low temperature around 70°F21°C, chance of rain 57%, wind out of the SE 13 mph21 km/h. Barometric pressure 29.85 in1011 mb, visibility 6 mi10 km, humidity 60%. |
| Tue, 25th Lo: 23°C74°F Hi: 31°C87°F |
Sunny Tuesday, temperatures as high as 87°F31°C, low temperature around 74°F23°C, chance of rain 17%, wind out of the NW 11 mph17 km/h. Barometric pressure 29.91 in1013 mb, visibility 6 mi10 km, humidity 33%. |
| Wed, 26th Lo: 20°C69°F Hi: 28°C82°F |
Sunny Wednesday, temperatures as high as 82°F28°C, low temperature around 69°F20°C, chance of rain 1%, wind out of the NNE 11 mph17 km/h. Barometric pressure 29.97 in1015 mb, visibility 6 mi10 km, humidity 46%. |
| Thu, 27th Lo: 20°C69°F Hi: 30°C86°F |
Sunny Thursday, temperatures as high as 86°F30°C, low temperature around 69°F20°C, chance of rain 36%, wind out of the SE 17 mph27 km/h. Barometric pressure 29.94 in1014 mb, visibility 6 mi10 km, humidity 43%. |
| Fri, 28th Lo: 18°C64°F Hi: 35°C95°F |
Sunny Friday, temperatures as high as 95°F35°C, low temperature around 64°F18°C, chance of rain 63%, wind out of the SSE 24 mph38 km/h. Barometric pressure 29.77 in1008 mb, visibility 6 mi10 km, humidity 51%. |
| Sat, 29th Lo: 24°C76°F Hi: 33°C92°F |
Overcast Saturday, temperatures as high as 92°F33°C, low temperature around 76°F24°C, chance of rain 8%, wind out of the ESE 12 mph19 km/h. Barometric pressure 29.68 in1005 mb, visibility 6 mi10 km, humidity 46%. |
| Sun, 30th Lo: 24°C76°F Hi: 35°C94°F |
Sunny Sunday, temperatures as high as 94°F35°C, low temperature around 76°F24°C, chance of rain 4%, wind out of the ENE 14 mph22 km/h. Barometric pressure 29.71 in1006 mb, visibility 6 mi10 km, humidity 45%. |
| Mon, 31st Lo: 26°C79°F Hi: 38°C100°F |
Overcast Monday, temperatures as high as 100°F38°C, low temperature around 79°F26°C, chance of rain 5%, wind out of the SSW 28 mph46 km/h. Barometric pressure 29.62 in1003 mb, visibility 6 mi10 km, humidity 35%. |
| Tue, 1st Lo: 16°C62°F Hi: 27°C80°F |
Sunny Tuesday, temperatures as high as 80°F27°C, low temperature around 62°F16°C, chance of rain 2%, wind out of the NNW 15 mph24 km/h. Barometric pressure 29.94 in1014 mb, visibility 6 mi10 km, humidity 43%. |
Wed, 2nd Lo: 14°C57°F Hi: 19°C66°F |
Light rain shower Wednesday, temperatures as high as 66°F19°C, low temperature around 57°F14°C, chance of rain 82%, wind out of the ENE 18 mph29 km/h. Barometric pressure 30 in1016 mb, visibility 6 mi10 km, humidity 85%. |
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