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Signal Hill Weather Forecast
Signal Hill, IL Weather Forecast Date: 612 PM CDT Mon Aug 17 2026
Weather forecast for Signal Hill, IL
Tonight Lo: 65°F Lo: 18°C |
Tonight... Mostly cloudy this evening, then clearing. Lows in the mid 60s. North winds around 5 mph this evening, becoming light and variable. |
Tue Hi: 89°FHi: 32°C Lo: 69°F Lo: 21°C |
Tuesday... Sunny. Highs in the upper 80s. South winds around 5 mph. |
Wed Hi: 85°FHi: 29°C Lo: 69°F Lo: 21°C |
Wednesday... Mostly cloudy with showers and thunderstorms likely in the morning, then partly sunny with a slight chance of showers and thunderstorms in the afternoon. Humid with highs in the mid 80s. South winds around 5 mph, becoming east in the afternoon. Chance of rain 60%. |
| Thu Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C |
Thursday... Partly sunny. A slight chance of showers and thunderstorms in the morning. Highs in the lower 80s. Chance of rain 20%. |
| Fri Hi: 85°FHi: 29°C Lo: 65°F Lo: 18°C |
Friday... Mostly clear. Lows in the mid 60s. Highs in the mid 80s. |
| Sat Hi: 85°FHi: 29°C Lo: 61°F Lo: 16°C |
Saturday... Mostly clear. A slight chance of showers and thunderstorms. Lows in the mid 60s. Highs in the mid 80s. Chance of rain 20%. |
Sun Hi: 81°FHi: 27°C Lo: 61°F Lo: 16°C |
Sunday... Partly cloudy. Highs in the lower 80s. Lows in the lower 60s. |
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