Weather WorldMason, SD Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Mason Weather Forecast
| REST OF TODAY | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT |
 |  | | | | |  | |  |  |  | |
| Sunny | Mostly Clear | Sunny | Clear | Sunny | Mostly Clear | Windy | Mostly Clear | Clearing | Chance of T-Storm | Chance of Showers | Chance of T-Storm |
| Hi: 80°FHi: 27°C | Lo: 50°FLo: 10°C | Hi: 80°FHi: 27°C | Lo: 49°FLo: 9°C | Hi: 90°FHi: 32°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Lo: 45°FLo: 7°C | Hi: 71°FHi: 22°C | Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C | Lo: 41°FLo: 5°C |
| POP: 50% | POP: 40% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 847 AM MDT Tue Sep 08 2026 
Mason Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Mason Weather Map
Mason Quick Facts
Mason Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 511 AM MDT Tue Sep 8 2026
Key Messages
- Warm temperatures generally in the 80s and 90s will continue this week, but change is possible by next weekend.
- Mostly dry until Friday afternoon, if not Saturday.
- Elevated to near-critical fire weather conditions will remain the main concern this week.
Discussion
...(This Evening Through Monday) Issued at 210 PM MDT Mon Sep 7 2026
A trough and associated cold front are in the process of crossing the CWA this afternoon, ushering in drier surface air and generally confining additional ch...