Johnston, MN 7-Day Weather Forecast
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Johnston Weather Forecast


Johnston, MN Weather Forecast Date: 937 AM CDT Sat Aug 08 2026
Weather forecast for Johnston, MN
| Today Hi: 85°FHi: 29°C Lo: 58°F Lo: 14°C |
Rest of Today... Mostly sunny. Highs in the mid 80s. Southwest winds up to 10 mph. |
| Sun Hi: 83°FHi: 28°C Lo: 55°F Lo: 13°C |
Sunday... Partly sunny in the morning then clearing. Highs 80 to 85. Northeast winds 5 to 15 mph. |
| Mon Hi: 83°FHi: 28°C Lo: 63°F Lo: 17°C |
Monday... Mostly sunny. Highs 80 to 85. |
| Tue Hi: 83°FHi: 28°C Lo: 58°F Lo: 14°C |
Tuesday... Mostly sunny. Highs 80 to 85. |
| Wed Hi: 78°FHi: 26°C Lo: 55°F Lo: 13°C |
Wednesday... Partly sunny in the morning then clearing. A slight chance of showers. Highs 75 to 80. |
| Thu Hi: 75°FHi: 24°C Lo: 55°F Lo: 13°C |
Thursday... Mostly sunny. Highs in the mid 70s. |
| Fri Hi: 75°FHi: 24°C |
Friday... Mostly cloudy in the morning, then mostly sunny. A slight chance of showers and thunderstorms. Highs in the mid 70s. |
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