Weather WorldNew Castle, IL 7-Day Weather Forecast
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New Castle Weather Forecast
New Castle, IL Weather Forecast Date: 1047 AM CDT Fri Oct 16 2026
Weather forecast for New Castle, IL
Today Hi: 55°FHi: 13°C Lo: 41°F Lo: 5°C |
Today... Mostly cloudy with a chance of showers this morning, then partly sunny this afternoon. Much cooler. Near steady temperature in the mid 50s. Northwest winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 50%. |
Sat Hi: 60°FHi: 16°C Lo: 35°F Lo: 2°C |
Saturday... Sunny. Highs around 60. North winds 5 to 10 mph. |
| Sun Hi: 65°FHi: 18°C Lo: 41°F Lo: 5°C |
Sunday... Patchy frost in the morning. Sunny. Highs in the mid 60s. Southeast winds around 5 mph. |
| Mon Hi: 71°FHi: 22°C Lo: 41°F Lo: 5°C |
Monday... Mostly clear. Lows in the lower 40s. Highs in the lower 70s. |
| Tue Hi: 71°FHi: 22°C Lo: 41°F Lo: 5°C |
Tuesday... Mostly clear. Lows in the lower 40s. Highs in the lower 70s. |
| Tue Hi: 71°FHi: 22°C Lo: 41°F Lo: 5°C |
Tuesday... Mostly clear. Lows in the lower 40s. Highs in the lower 70s. |
| Wed Hi: 79°FHi: 26°C Lo: 49°F Lo: 9°C |
Wednesday... Mostly clear. Highs in the upper 70s. Lows in the upper 40s. |
| Thu Hi: 79°FHi: 26°C Lo: 49°F Lo: 9°C |
Thursday... Mostly clear. Highs in the upper 70s. Lows in the upper 40s. |
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