Weather World
Eureka, SD Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Eureka Weather Forecast
| THIS AFTERNOON | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
 |  |  |  | | | | | |  |  |  |
| Chance of T-Storm | Mostly Cloudy | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Sunny | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Sunny | Chance of Showers |
| Hi: 85°FHi: 29°C | Lo: 61°FLo: 16°C | Hi: 80°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 85°FHi: 29°C | Hi: 81°FHi: 27°C Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C Lo: 59°FLo: 15°C | Lo: 50°FLo: 10°C | Hi: 71°FHi: 22°C | Hi: 65°FHi: 18°C Lo: 49°FLo: 9°C |
| POP: 50% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 221 PM CDT Mon Sep 07 2026 
Eureka Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Eureka Weather Map
Eureka Quick Facts
Eureka Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 217 PM CDT Mon Sep 7 2026
Key Messages
- There is a Marginal risk (level 1 out of 5) for severe storms over northeast SD and west central MN tonight. The primary hazards will be 1 inch in diameter hail and 60 mph wind gusts. Additionally, the threat for a tornado or two this evening over east central SD cannot be ruled out.
- Northwest wind 15 to 25 mph with gusts of 30 to 40 mph, low relative humidity, and dry cured fuels will create elevated fire weather conditions mainly over north central SD on Tuesday.
- There is a 20-45 p...