Weather in Lanark, IL
Updated 2026-08-11 11:00 local time · ZIP codes 61046
Cloudy
No government weather alerts were returned for this location at the latest update.
Next hours
67°35% rain
78°37% rain
85°8% rain86°6% rain87°5% rain87°5% rain87°4% rain87°5% rain84°6% rain80°8% rain
78°14% rain77°16% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Weather insights for today
Rain chance reaches about 37% over the next 12 hours.
It feels like 67°F with winds near 2 mph.
80°F, 8% rain chance and 6 mph wind.
Visibility is around 10 mi; gusts may reach 16 mph.
Current temperature is 67°F, wind 2 mph, rain chance up to 37%.
UV index is 1.
Lanark weather today
Cloudy and 67°F in Lanark, IL. Today's high is 87°F with a 77% rain chance. Winds are around 2 mph with gusts near 3 mph. Relative humidity is 94%, pressure is 29.87 inHg, and visibility is about 10 miles.
Tonight and tomorrow in Lanark
Sunrise is at 06:03 AM and sunset is at 08:06 PM. Tomorrow's forecast calls for Sunny with a high near 81°F and a low near 69°F. The maximum rain chance is 81%.