| Mon May 20 | Tue May 21 | Wed May 22 | Thu May 23 | |
| Tmin 18-06 |
16°C | 15°C | 11°C | 11°C |
| Tmax 06-18 |
26°C | 23°C | 18°C | 20°C |
| morning 24-06 |
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| a.m. 06-12 |
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| p.m. 12-18 |
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| evening 18-24 |
| Nearby Forecast Locations - Ottumwa | Distance |
| Forecast: Ottumwa Region In the next few days, it's partly cloudy. On Wednesday and Thursday precipitation is expected. It's getting cooler: From 23 degrees on Tuesday the daily highs drop to 18 degrees on Wednesday. |