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Oak Lake, SD Weather Forecast
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Oak Lake Weather Forecast
| REST OF TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 | |  |  |  | | | | | |  | |
| Patchy Fog | Patchy Fog | Mostly Cloudy | Mostly Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy | Sunny | Mostly Clear | Sunny |
| Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 61°FHi: 16°C | Lo: 45°FLo: 7°C | Hi: 59°FHi: 15°C | Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 60°FHi: 16°C | Lo: 45°FLo: 7°C | Hi: 60°FHi: 16°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 148 AM CDT Wed Sep 30 2026 
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Issued: 220 AM CDT Wed Sep 30 2026
Key Messages
- Dense fog is becoming more widespread, mainly east of Highway 281 so far, and a Dense Fog Advisory has been issued for most of southeast SD, and southwest MN along/west of the Buffalo Ridge through 10 AM. Visibility one quarter mile or less will be prevalent through the morning commute.
- Additional showers will lift through the U.S. Highway-20 corridor in northwestern IA this afternoon/evening. Rainfall amounts mainly less than 0.25 inch are expected, but totals nearing 0.50 inch may ...