Weather World
Knights of Pythias Lake, IL 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Knights of Pythias Lake, IL Weather Forecast
Knights of Pythias Lake, IL Weather Forecast Date: 552 PM CDT Mon Aug 10 2026
The area/counties/county of: Williamson, including the city of Herrin.or toggle through each period.
Tonight... Mostly clear this evening, then becoming partly cloudy. Lows in the upper 70s. South winds 5 to 10 mph.
Tuesday... Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph.
Tuesday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 70s. Southwest winds 5 to 10 mph.
Wednesday... Mostly sunny. A chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Chance of rain 40%.
Wednesday Night... Partly cloudy. Lows in the upper 70s. South winds 5 to 10 mph.
Thursday... Partly cloudy. Hot. Highs in the mid 90s. Lows in the mid 70s.
Friday... Partly cloudy. Hot. Highs in the mid 90s. Lows in the mid 70s.
Friday Night... Mostly clear. Hot. Lows in the mid 70s. Highs in the upper 90s.
Saturday... Mostly clear. Hot. Lows in the mid 70s. Highs in the upper 90s.
Sunday... Mostly clear. Hot. Lows in the mid 70s. Highs in the upper 90s.
POP = Probability of Precipitation
Knights of Pythias Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...