Trego School, MT Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Trego School Weather Forecast
| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
| Patchy Fog | Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Mostly Sunny | Partly Cloudy | Mostly Cloudy | Chance of Rain | Chance of Rain | Chance of Rain | Chance of Rain | Partly Cloudy |
| Hi: 80°FHi: 27°C | Lo: 46°FLo: 8°C | Hi: 76°FHi: 24°C | Lo: 45°FLo: 7°C | Hi: 70°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 75°FHi: 24°C | Lo: 46°FLo: 8°C | Hi: 65°FHi: 18°C | Lo: 40°FLo: 4°C | Hi: 60°FHi: 16°C | Lo: 36°FLo: 2°C |
| POP: 20% | POP: 50% | POP: 50% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1223 AM MDT Mon Sep 21 2026 

Trego School Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Trego School Weather Map
Trego School Quick Facts
Trego School Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 200 AM MDT Mon Sep 21 2026
Discussion
...
KEY MESSAGES:- Chance for showers/thunderstorms in Lemhi County and southwest Montana on Tuesday
- Warm, dry week ahead for the rest of the region.
- Showers return late next week or early next weekend.
Satellite imagery early this morning shows dry air under a ridge of high pressure over the northwestern U.S. including the Northern Rockies. A closed circulation of low pressure is spinning over central California and moving inland. The ridge of high pressure will keep the Northern Rockies...
Weather World