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Merriam, IL 7-Day Weather Forecast
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Merriam Weather Forecast
Merriam, IL Weather Forecast Date: 734 PM CST Mon Mar 02 2026
Weather forecast for Merriam, IL
Tonight Lo: 39°F Lo: 4°C |
Tonight... Cloudy. Patchy fog. Rain showers likely after midnight. Near steady temperature in the upper 30s. East winds around 5 mph. Chance of rain 70%. |
Tue Hi: 60°FHi: 16°C Lo: 55°F Lo: 13°C |
Tuesday... Cloudy. Patchy fog in the morning. Showers with a slight chance of thunderstorms in the morning, then a chance of showers in the afternoon. Not as cool with highs around 60. Southeast winds around 5 mph, becoming south in the afternoon. Chance of rain 90%. |
| Wed Hi: 69°FHi: 21°C Lo: 59°F Lo: 15°C |
Wednesday... A chance of thunderstorms. Showers. Highs in the upper 60s. South winds 5 to 10 mph. Chance of rain 80%. |
| Thu Hi: 70°FHi: 21°C Lo: 55°F Lo: 13°C |
Thursday... A chance of thunderstorms. Showers. Highs around 70. Chance of rain 90%. |
| Fri Hi: 79°FHi: 26°C Lo: 61°F Lo: 16°C |
Friday... Partly sunny. A chance of showers and thunderstorms in the morning. Highs in the upper 70s. Chance of rain 50%. |
| Sat Hi: 70°FHi: 21°C Lo: 51°F Lo: 11°C |
Saturday... Showers, mainly in the morning. Highs around 70. Chance of rain 90%. |
Sun Hi: 65°FHi: 18°C Lo: 51°F Lo: 11°C |
Sunday... Mostly cloudy with a 30% chance of showers. Highs in the mid 60s. Lows in the lower 50s. |
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