Nymphaea Lake, MT Weather Forecast
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Nymphaea Lake Weather Forecast
| TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
| Smoke | Mostly Clear | Sunny | Partly Cloudy | Mostly Sunny | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Sunny | Chance of Showers |
| Hi: 75°FHi: 24°C | Lo: 48°FLo: 9°C | Hi: 81°FHi: 27°C | Lo: 54°FLo: 12°C | Hi: 82°FHi: 28°C | Lo: 54°FLo: 12°C | Hi: 74°FHi: 23°C | Lo: 49°FLo: 9°C | Hi: 73°FHi: 23°C | Lo: 46°FLo: 8°C | Hi: 74°FHi: 23°C | Lo: 49°FLo: 9°C |
| POP: 50% | POP: 70% | POP: 40% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 336 AM MDT Wed Aug 19 2026 

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Nymphaea Lake Forecast Discussion
Issued: 510 AM MDT Wed Aug 19 2026
Key Messages
- It will be dry Wednesday through Friday.
- It will warm up through Saturday and then cool back down to seasonal averages Sunday and Monday.
- Thunderstorms return this weekend with breezy conditions Saturday evening through Sunday.
Discussion
... /Issued 149 AM MDT Wed Aug 19 2026/- Meteorological Overview:
Today an upper-level ridge begins to build back in across North- central, Central, and Southwestern Montana. Today temperatures will be around seasonal avera...
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