Weather World
McCook Lake, SD Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
McCook Lake Weather Forecast
| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
 |  |  |  |  |  |  |  |  | | | |
| Mostly Cloudy | Chance of T-Storm | Chance of T-Storm | Showers | Chance of Showers | Mostly Cloudy | Partly Cloudy | Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny |
| Lo: 61°FLo: 16°C | Hi: 69°FHi: 21°C | Lo: 65°FLo: 18°C | Hi: 69°FHi: 21°C | Lo: 59°FLo: 15°C | Hi: 61°FHi: 16°C | Lo: 45°FLo: 7°C | Hi: 61°FHi: 16°C | Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C | Lo: 50°FLo: 10°C | Hi: 59°FHi: 15°C |
| POP: 100% | POP: 70% | POP: 90% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 504 PM CDT Mon Sep 28 2026 
McCook Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
McCook Lake Weather Map
McCook Lake Quick Facts
McCook Lake Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 206 PM CDT Mon Sep 28 2026
Key Messages
- Widespread showers and isolated thunderstorms will spread east through the region late tonight through Tuesday. While severe weather is not expected, much of the region will see a quarter to half inch of rain by Tuesday evening.
- From Tuesday night through early Thursday, additional rounds of rain will impact areas near and southeast of Lake Andes SD to Madison SD to Pipestone MN line. Prolonged rainfall on top of recent rainfall has potential to bring areal flooding and rises on loc...