Weather in Frederick, IL
Updated 2026-08-11 11:00 local time · ZIP codes 62639
Partly cloudy
No government weather alerts were returned for this location at the latest update.
Next hours
85°6% rain
93°5% rain93°4% rain96°3% rain96°2% rain96°2% rain94°2% rain92°3% rain88°4% rain84°5% rain
82°5% rain81°6% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 6%).
It feels like 93°F with winds near 18 mph.
84°F, 5% rain chance and 9 mph wind.
Visibility is around 10 mi; gusts may reach 22 mph.
Current temperature is 85°F, wind 18 mph, rain chance up to 6%.
UV index is 2.
Frederick weather today
Partly cloudy and 85°F in Frederick, IL. Today's high is 96°F with a 6% rain chance. Winds are around 18 mph with gusts near 20 mph. Relative humidity is 70%, pressure is 29.95 inHg, and visibility is about 10 miles.
Tonight and tomorrow in Frederick
Sunrise is at 06:09 AM and sunset is at 08:04 PM. Tomorrow's forecast calls for Sunny with a high near 88°F and a low near 71°F. The maximum rain chance is 57%.