Washington County State Conservation Area, IL 7-Day Weather Forecast

Washington County State Conservation Area Weather Forecast

Washington County State Conservation Area, IL Weather Forecast Date: 128 PM CDT Tue Aug 18 2026

Weather forecast for Washington County State Conservation Area, IL

Today Hi: 85°FHi: 29°C Lo: 69°F Lo: 21°C	This Afternoon... Sunny. Near steady temperature in the mid 80s. Light and variable winds.
Wed Hi: 80°FHi: 27°C Lo: 65°F Lo: 18°C	Wednesday... Mostly cloudy. Showers with a slight chance of thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs around 80. Southwest winds around 5 mph. Chance of rain 90%.
Thu Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C	Thursday... Partly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Northeast winds around 5 mph. 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... Mostly clear. Lows in the lower 60s. Highs in the lower 80s.
Mon Hi: 85°FHi: 29°C Lo: 61°F Lo: 16°C	Monday... Partly cloudy. A 20% chance of showers. Lows in the lower 60s. Highs in the mid 80s.