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Long Branch, IL Weather Forecast
Long Branch, IL Weather Forecast Date: 117 PM CDT Wed Sep 30 2026
The area/counties/county of: Saline, including the city of Harrisburg.or toggle through each period.
This Afternoon... Mostly sunny. Near steady temperature in the upper 80s. South winds 5 to 10 mph.
Tonight... Mostly cloudy in the evening, then becoming partly cloudy. Lows around 70. South winds 5 to 10 mph.
Thursday... Partly sunny. Highs in the lower 90s. Southwest winds 10 to 15 mph.
Thursday Night... Mostly cloudy. Showers after midnight. Lows in the upper 60s. Southwest winds 5 to 10 mph. Chance of rain 80%.
Friday... Showers, mainly in the morning. Cooler. Near steady temperature around 70. Northwest winds around 5 mph, increasing to north 10 to 15 mph in the afternoon. Chance of rain near 100%.
Friday Night... Mostly cloudy in the evening, then becoming partly cloudy. Cooler with lows in the lower 50s.
Saturday... Partly cloudy. Highs in the lower 70s. Lows in the lower 50s.
Sunday... Partly cloudy. Highs in the lower 70s. Lows in the lower 50s.
Sunday Night... Mostly clear. Lows in the lower 50s.
Monday... Clear. Highs in the lower 70s. Lows in the mid 40s.
POP = Probability of Precipitation
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