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Marengo, IA Weather Forecast
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| THIS AFTERNOON | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
 |  | | | | | | | |  | | |
| Sunny | Mostly Clear | Sunny | Clear | Sunny | Clear | Clear | Mostly Clear | Mostly Clear | Partly Cloudy | Mostly Sunny | Mostly Clear |
| Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C | Hi: 71°FHi: 22°C Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C Lo: 55°FLo: 13°C | Lo: 50°FLo: 10°C | Hi: 71°FHi: 22°C | Hi: 71°FHi: 22°C Lo: 51°FLo: 11°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 126 PM CDT Sat Oct 03 2026 
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Issued: 119 PM CDT Sat Oct 3 2026
Key Messages
- Pleasant early Fall weather is forecast through next week, with mainly dry conditions and near to above normal temperatures.
Aviation
/18Z TAFS THROUGH 18Z SUNDAY/... Issued at 112 PM CDT Sat Oct 3 2026
VFR conditions are expected to persist through the TAF period. A system will pass mainly to our north bringing mostly a transitory bout of mid/high cloudiness. There is a low chance for sprinkles or a brief light shower at KDBQ 04z-07z, but probabilities are too low for mention. Should a...