Weather WorldUpper John G Reservoir, ID 7-Day Weather Forecast
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Upper John G Reservoir Weather Forecast
Upper John G Reservoir, ID Weather Forecast Date: 230 PM MDT Tue Aug 18 2026
Weather forecast for Upper John G Reservoir, ID
Tonight Lo: 60°F Lo: 16°C |
Tonight... Mostly clear. Lows 57 to 62. |
Wed Hi: 93°FHi: 34°C Lo: 63°F Lo: 17°C |
Wednesday... Mostly sunny. Highs 89 to 95. |
| Thu Hi: 97°FHi: 36°C Lo: 64°F Lo: 18°C |
Thursday... Mostly sunny. Highs 94 to 99. |
| Fri Hi: 96°FHi: 36°C Lo: 64°F Lo: 18°C |
Friday... Mostly sunny. Highs 93 to 98. |
Sat Hi: 91°FHi: 33°C Lo: 59°F Lo: 15°C |
Saturday... Mostly cloudy in the morning, then partly cloudy with a slight chance of thunderstorms in the afternoon. Highs 87 to 93. |
| Sun Hi: 87°FHi: 31°C Lo: 58°F Lo: 14°C |
Sunday... Partly cloudy. A slight chance of thunderstorms in the afternoon. Highs 84 to 89. |
| Mon Hi: 89°FHi: 32°C Lo: 60°F Lo: 16°C |
Monday... Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Chance of rain 20%. Highs 86 to 91. |
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