With a population of around 1,100, Rosiclare sits in Illinois, United States. The city operates in the Central Time Zone.
In 2025, Rosiclare recorded an average annual temperature of 58°F. The hottest temperatures reached 95°F in July; the coolest were 4°F in February. Total precipitation for the year was 47 inches, with the wettest month being April. Snowfall for the year totaled approximately 6 inches.
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