| Sat May 18 | Sun May 19 | Mon May 20 | Tue May 21 | |
| Tmin 18-06 |
75°F | 75°F | 75°F | 75°F |
| Tmax 06-18 |
89°F | 89°F | 89°F | 89°F |
| 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 - Monrovia | Distance |
| Forecast: Monrovia Region In the next few days, it's mostly cloudy. On Tuesday some sunny spells. Persistent rain, especially on Sunday and Monday. With a high around 31 degrees, it's hot. |