Olson, MT Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Olson Weather Forecast
| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
| Partly Cloudy | Partly Cloudy | Chance of Rain | Chance of T-Storm | Chance of Rain | Chance of T-Storm | Chance of T-Storm | Chance of Rain | Chance of Rain | Chance of T-Storm | Chance of Rain | Chance of Rain |
| Lo: 45°FLo: 7°C | Hi: 85°FHi: 29°C | Lo: 46°FLo: 8°C | Hi: 70°FHi: 21°C | Lo: 40°FLo: 4°C | Hi: 66°FHi: 19°C | Lo: 36°FLo: 2°C | Hi: 66°FHi: 19°C | Lo: 40°FLo: 4°C | Hi: 70°FHi: 21°C | Lo: 40°FLo: 4°C | Hi: 70°FHi: 21°C |
| POP: 40% | POP: 70% | POP: 40% | POP: 60% | POP: 50% | POP: 40% | POP: 30% | POP: 30% | POP: 30% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1223 PM MDT Mon Aug 31 2026 

Olson Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Olson Weather Map
Olson Quick Facts
Olson Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 1223 PM MDT Mon Aug 31 2026
Discussion
...
KEY MESSAGES:- Widespread showers and thunderstorms Tuesday afternoon and evening, with gusty outflow winds of 30-50 mph, moderate to heavy rainfall, and lightning, strongest storms south of Highway 200.
- Another round of storms Wednesday capable of 30-50 mph outflows and heavy rain rates up to 0.5 inches per hour.
- Persistent active pattern late week into the weekend under southwesterly flow, with a 15% chance of a tropical moisture tap on Sunday.
Today through Tuesday Night: A ridge o...
Weather World