Weather in Farmington, IL
Updated 2026-09-26 11:00 local time · ZIP codes 61531
Overcast
No government weather alerts were returned for this location at the latest update.
Next hours
61°16% rain62°16% rain61°18% rain62°19% rain61°18% rain
64°12% rain64°15% rain64°17% rain
62°18% rain62°17% rain
62°14% rain61°16% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 19%).
It feels like 57°F with winds near 7 mph.
64°F, 12% rain chance and 5 mph wind.
Visibility is around 6 mi; gusts may reach 11 mph.
Current temperature is 61°F, wind 7 mph, rain chance up to 19%.
UV index is 3.
Local weather characteristics in Farmington
Illinois has four distinct seasons with hot, humid summers, cold winters, strong frontal changes and frequent spring and summer thunderstorms.
Farmington is part of the Midwest weather region. The forecast point is near 40.70°N latitude and 90.01°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Farmington weather today
Overcast and 61°F in Farmington, IL. Today's high is 64°F with a 17% rain chance. Winds are around 7 mph with gusts near 10 mph. Relative humidity is 64%, pressure is 30.18 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Farmington
Sunrise is at 06:51 AM and sunset is at 06:51 PM. Tomorrow's forecast calls for Sunny with a high near 71°F and a low near 56°F. The maximum rain chance is 36%.