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Diagonal, IA 7-Day Weather Forecast
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Diagonal Weather Forecast
Diagonal, IA Weather Forecast Date: 222 AM CDT Fri Sep 11 2026
Weather forecast for Diagonal, IA
Today Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C |
Today... Mostly sunny. Patchy fog this morning. Highs in the lower 80s. South winds 5 to 10 mph with gusts up to 20 mph. |
Sat Hi: 80°FHi: 27°C Lo: 59°F Lo: 15°C |
Saturday... Mostly sunny with a chance of showers with a slight chance of thunderstorms. Humid with highs around 80. Southwest winds 5 to 10 mph, becoming north in the afternoon. Chance of rain 40%. |
| Sun Hi: 75°FHi: 24°C Lo: 61°F Lo: 16°C |
Sunday... A chance of thunderstorms. Showers with highs in the mid 70s. East winds 10 to 15 mph. Chance of rain 80%. |
Mon Hi: 85°FHi: 29°C Lo: 61°F Lo: 16°C |
Monday... Partly sunny in the morning, then clearing. A slight chance of thunderstorms. A chance of showers, mainly in the morning. Breezy with highs in the mid 80s. Chance of rain 50%. |
| Tue Hi: 70°FHi: 21°C Lo: 55°F Lo: 13°C |
Tuesday... Showers likely. A chance of thunderstorms, mainly in the morning. Cooler with highs around 70. Chance of rain 70%. |
| Wed Hi: 71°FHi: 22°C Lo: 61°F Lo: 16°C |
Wednesday... Showers likely with a chance of thunderstorms in the morning, then a chance of showers in the afternoon. Highs in the lower 70s. Chance of rain 70%. |
| Thu Hi: 79°FHi: 26°C |
Thursday... Mostly cloudy with a chance of showers with a slight chance of thunderstorms in the morning, then mostly sunny with a slight chance of showers in the afternoon. Highs in the upper 70s. Chance of rain 50%. |
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