Mellette, SD Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Mellette Weather Forecast
| REST OF TONIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY | FRIDAY | SATURDAY |
| Mostly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear | Partly Sunny |
| Lo: 75°FLo: 24°C | Hi: 85°FHi: 29°C | Lo: 69°FLo: 21°C | Hi: 89°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 85°FHi: 29°C | Hi: 81°FHi: 27°C Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C |
| POP: 50% | POP: 30% | POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1211 AM CDT Sun Sep 06 2026 

Mellette Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Mellette Weather Map
Mellette Quick Facts
Mellette Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 1240 AM CDT Sun Sep 6 2026
Key Messages
- There is a Marginal risk (level 1 out of 5) for severe storms over portions of the region on Sunday. Main hazards will be 1 inch diameter hail and 60 mph wind gusts.
- Hot temperatures for September persist into Monday. Highs in the low 80s over northeastern SD to upper 90s over central SD are expected for the next couple of days.
- Northwest wind 15 to 30 mph, low relative humidity, and dry cured fuels may result in fire weather headlines on Tuesday.
Discussion
... Issued at 132 PM CDT Sa...
Weather World