Weather World
Letcher, SD Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Letcher Weather Forecast
| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
 |  |  |  |  | | | | | | |  |
| Chance of T-Storm | Chance of T-Storm | Clearing | Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear | Mostly Sunny | Chance of Showers |
| Hi: 89°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 81°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Lo: 51°FLo: 11°C | Hi: 85°FHi: 29°C | Lo: 61°FLo: 16°C | Hi: 85°FHi: 29°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Lo: 51°FLo: 11°C |
| POP: 50% | POP: 50% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 239 AM CDT Mon Sep 07 2026 
Letcher Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Letcher Weather Map
Letcher Quick Facts
Letcher Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 340 AM CDT Mon Sep 7 2026
Key Messages
- Isolated, non-severe thunderstorms continue across northwestern Iowa through daybreak. Severe weather is not expected, but locally heavy rain has been occurring and may lead to isolated flash flooding.
- Isolated to scattered showers and storms are possible along and north of I-90 this morning into early afternoon. Severe risk is low.
- Additional scattered and possibly severe storms expected late this afternoon across southeastern and south central South Dakota, moving east through toni...