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City of Johnston, IAJohnston, IA 7-Day Weather Forecast
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Johnston Weather Forecast
Johnston, IA Weather Forecast Date: 507 PM CST Tue Nov 10 2026
Weather forecast for Johnston, IA
Tonight Lo: 41°F Lo: 5°C |
Tonight... Mostly cloudy this evening, then clearing. Lows in the lower 40s. Southeast winds around 5 mph, becoming south after midnight. |
Veterans Day Hi: 59°FHi: 15°C Lo: 35°F Lo: 2°C |
Veterans Day... Sunny. Highs in the upper 50s. Northwest winds 15 to 20 mph with gusts up to 30 mph. |
| Thu Hi: 45°FHi: 7°C Lo: 29°F Lo: -2°C |
Thursday... Mostly sunny. Highs in the mid 40s. North winds 5 to 10 mph. |
| Fri Hi: 41°FHi: 5°C Lo: 25°F Lo: -4°C |
Friday... Sunny. Highs in the lower 40s. |
| Sat Hi: 45°FHi: 7°C Lo: 31°F Lo: -1°C |
Saturday... Sunny. Highs in the mid 40s. |
Sun Hi: 49°FHi: 9°C Lo: 39°F Lo: 4°C |
Sunday... Mostly sunny with a 20% chance of rain showers. Highs in the upper 40s. |
| Mon Hi: 51°FHi: 11°C Lo: 39°F Lo: 4°C |
Monday... Mostly sunny. Highs in the lower 50s. |
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