Blank Dam, SD Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Blank Dam Weather Forecast
| TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
| Partly Sunny | Chance of Showers | Mostly Cloudy | Chance of T-Storm | Chance of T-Storm | Mostly Clear | Mostly Clear | Mostly Cloudy | Chance of Showers | Partly Cloudy | Mostly Clear | Mostly Clear |
| Hi: 65°FHi: 18°C | Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C | Hi: 69°FHi: 21°C Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C Lo: 45°FLo: 7°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C Lo: 51°FLo: 11°C |
| POP: 20% | POP: 90% | POP: 100% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 621 AM CDT Sat Sep 12 2026 

Blank Dam Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Blank Dam Weather Map
Blank Dam Quick Facts
Blank Dam Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 634 AM CDT Sat Sep 12 2026
Key Messages
- Cooler temperatures take hold this weekend, with highs in the 60s to low 70s expected. This trend will continue through the start of next week, with the possible exception of a brief warmup to near-normal on Monday.
- Additional chances for rain showers to perhaps weak thunderstorms come Sunday and Monday mornings. Over both days, much of the forecast area will see between half-an-inch to an inch of rainfall in total.
Discussion
... Issued at 220 AM CDT Sat Sep 12 2026
There are a few lig...
Weather World