Weather WorldAjax Lake, MT Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Ajax Lake Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 |  |  |  | | |  |  | | | | |
| Clearing | Smoke | Mostly Clear | Sunny | Partly Cloudy | Mostly Sunny | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Sunny | Partly Cloudy | Chance of T-Storm |
| Lo: 46°FLo: 8°C | Hi: 75°FHi: 24°C | Lo: 49°FLo: 9°C | Hi: 80°FHi: 27°C | Lo: 53°FLo: 12°C | Hi: 81°FHi: 27°C | Lo: 54°FLo: 12°C | Hi: 75°FHi: 24°C | Lo: 48°FLo: 9°C | Hi: 72°FHi: 22°C | Lo: 47°FLo: 8°C | Hi: 74°FHi: 23°C |
| POP: 20% | POP: 50% | POP: 70% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 336 PM MDT Tue Aug 18 2026 
Ajax Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Ajax Lake Weather Map
Ajax Lake Quick Facts
Ajax Lake Forecast Discussion
Issued: 546 PM MDT Tue Aug 18 2026
Key Messages
- Scattered showers and thunderstorms develop this afternoon and evening, with isolated severe winds and hail possible.
- Dry and warm conditions settle in Wednesday and Thursday.
- Breezy winds and showers and thunderstorms move in through the weekend.
Discussion
... /Issued 1247 PM MDT Tue Aug 18 2026/- Meteorological Overview:
For the rest of today, a small shortwave trough moving through the region will continue to develop scattered showers and thunderstorms a...