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Putnam Lake Weather Forecast
| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SUNDAY | MONDAY |
 |  |  | | |  |  | |  |  | | |
| Mostly Clear | Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy | Mostly Cloudy | Mostly Cloudy | Mostly Sunny | Chance of Rain | Partly Cloudy | Partly Cloudy | Mostly Sunny |
| Lo: 45°FLo: 7°C | Hi: 73°FHi: 23°C | Lo: 49°FLo: 9°C | Hi: 64°FHi: 18°C | Lo: 41°FLo: 5°C | Hi: 66°FHi: 19°C Lo: 45°FLo: 7°C | Hi: 66°FHi: 19°C Lo: 45°FLo: 7°C | Hi: 71°FHi: 22°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C Lo: 41°FLo: 5°C | Hi: 74°FHi: 23°C |
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 422 PM MDT Mon Sep 28 2026 
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Issued: 1131 PM MDT Mon Sep 28 2026
Key Messages
- There will be isolated showers and thunderstorms in Southwestern Montana this afternoon and evening.
- It will be windy on Tuesday across North-central Montana.
- Today through Friday it will warm up to around seasonal averages with mostly dry weather.
Discussion
... /Issued 528 PM MDT Mon Sep 28 2026/- Meteorological Overview:
This afternoon a weak upper-level trough moves over North-central, Central, and Southwestern Montana. This will bring showers and thunderstorms to Southwestern Montan...