Temperature in Illinois in January
Illinois is a region in the United States of America. January in has maximum daytime temperatures ranging from very low in Galena with -2°C to low temperatures in Metropolis with 6°C. Nighttime temperatures generally drop to -4°C in Metropolis and -12°C in Galena. The month of January is in the winter season. On average, it is one of the coldest months of the year.
What is the temperature of the different cities in Illinois in January?
Find the average daytime temperatures in January for the most popular destinations in Illinois on the map below. Click on a destination dot for more detailed information.
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