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J Lake, MT Weather Forecast

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J Lake, MT Weather Forecast

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J Lake MT weather - Clear - 59°F
Clear
59°F
Updated 11:50 am
Feels Like 57°F
Humidity 74%
Wind N 0 mph
Barometer  29.94 in
Dew Point 51°F
J Lake MT weather - Clear - 15°C
Clear
15°C
Updated 11:50 am
Feels Like 14°C
Humidity 74%
Wind N 0 km/h
Barometer  101.3 kPa
Dew Point 11°C
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J Lake Weather Forecast

TODAY TONIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT
J Lake, MT Weather - Today Patchy Fog J Lake, MT Weather - Tonight Mostly Cloudy J Lake, MT Weather - Wednesday Clearing J Lake, MT Weather - Wednesday Night Mostly Clear J Lake, MT Weather - Thursday Sunny J Lake, MT Weather - Thursday Night Mostly Clear J Lake, MT Weather - Friday Mostly Sunny J Lake, MT Weather - Friday Night Chance Of Showers J Lake, MT Weather - Saturday Partly Cloudy J Lake, MT Weather - Saturday Night Partly Cloudy J Lake, MT Weather - Sunday Partly Sunny J Lake, MT Weather - Sunday Night Chance Of Rain
Patchy Fog Mostly Cloudy Clearing Mostly Clear Sunny Mostly Clear Mostly Sunny Chance of Showers Partly Cloudy Partly Cloudy Partly Sunny Chance of Rain
Hi: 79°FHi: 26°C
 Lo: 51°FLo: 11°C Hi: 78°FHi: 26°C
 Lo: 51°FLo: 11°C Hi: 83°FHi: 28°C
 Lo: 55°FLo: 13°C Hi: 82°FHi: 28°C
 Lo: 50°FLo: 10°C Hi: 65°FHi: 18°C
Lo: 41°FLo: 5°C		 Hi: 65°FHi: 18°C
Lo: 41°FLo: 5°C		 Hi: 64°FHi: 18°C
 Hi: 63°FHi: 17°C
Lo: 45°FLo: 7°C
POP: 20% POP: 20%
POP = Probability of Precipitation.
Weather Outlook Updated: 317 AM MDT Tue Sep 22 2026 J Lake, MT Weather - WeatherWorld.com

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J Lake Forecast Discussion

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Issued: 1058 AM MDT Tue Sep 22 2026

Key Messages

  • Above average warmth through Friday.
  • Scattered showers and isolated thunderstorms primarily across southwest MT this evening and overnight.
  • Pacific weather system brings windy and cooler conditions for the upcoming weekend.

Discussion

... /Issued 500 AM MDT Tue Sep 22 2026/
  • Meteorological Overview:

    • Large scale ridging centered east of the region will maintain above average warmth and a southwesterly flow aloft across the Northern Rockies and MT through Friday before a broadening upper t...