Weather WorldMellette County, SD Weather Forecast
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Mellette County Weather Forecast
| OVERNIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
 |  |  |  | | | | | | | | |
| Partly Cloudy | Clearing | Mostly Clear | Sunny | Mostly Clear | Sunny | Clear | Sunny | Partly Cloudy | Clearing | Mostly Clear | Mostly Sunny |
| Lo: 45°FLo: 7°C | Hi: 71°FHi: 22°C | Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1122 PM CDT Thu Oct 01 2026 
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Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 957 PM MDT Thu Oct 1 2026
Key Messages
- Isolated light precipitation expected through tonight.
- Breezy through the weekend.
- Near or above normal temperatures through the forecast period.
- Mostly dry conditions expected over the next week.
Discussion
...(This Evening Through Thursday) Issued at 208 PM MDT Thu Oct 1 2026
Current Water Vapor and upper air models show northwest flow aloft, with an upper low located over the southern plains. 20Z surface analysis shows high pressure over eastern MT, while the cold front that passed t...