Weather in Plymouth, IL
Updated 2026-09-26 09:00 local time · ZIP codes 62367
Overcast
No government weather alerts were returned for this location at the latest update.
Next hours
58°17% rain
59°16% rain61°17% rain61°15% rain61°16% rain63°13% rain67°19% rain67°14% rain66°12% rain64°15% rain
63°16% rain
62°14% 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 54°F with winds near 7 mph.
66°F, 12% rain chance and 9 mph wind.
Visibility is around 6 mi; gusts may reach 14 mph.
Current temperature is 58°F, wind 7 mph, rain chance up to 19%.
UV index is 0.
Local weather characteristics in Plymouth
Illinois has four distinct seasons with hot, humid summers, cold winters, strong frontal changes and frequent spring and summer thunderstorms.
Plymouth is part of the Midwest weather region. The forecast point is near 40.29°N latitude and 90.92°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.
Plymouth weather today
Overcast and 58°F in Plymouth, IL. Today's high is 67°F with a 36% rain chance. Winds are around 7 mph with gusts near 14 mph. Relative humidity is 67%, pressure is 30.16 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Plymouth
Sunrise is at 06:55 AM and sunset is at 06:54 PM. Tomorrow's forecast calls for Cloudy with a high near 73°F and a low near 59°F. The maximum rain chance is 21%.