66°F and Fair. Our high today in Monroe, MI was 79°F, 5 degrees below the average high of 84°F. It was seasonably chilly on Sunday, with partly to mostly cloudy skies, isolated showers, and temperatures barely reaching 70°F. This weather has been great for the Monroe County Fair, which runs this week, and normally experiences hot and humid conditions. However, a few showers are possible tomorrow, so the weather may not be quite as ideal as it has been the past couple days.