Jerome, Illinois is a small village located in Sangamon County. The climate in Jerome is classified as a humid continental climate, characterized by hot, humid summers and cold winters. Summers typically see temperatures ranging from the mid-70s to the low 90s Fahrenheit, while winters experience temperatures in the 20s and 30s Fahrenheit. The area receives moderate rainfall throughout the year, with occasional thunderstorms.

As for hydrology constituents, Jerome does not have any large bodies of water within its boundaries. However, it is situated near Lake Springfield and the Sangamon River, offering residents and visitors opportunities for boating, fishing, and other water activities. Lake Springfield is a popular spot for recreational boating, while the Sangamon River provides opportunities for fishing enthusiasts.

In terms of outdoor recreation, Jerome is surrounded by natural beauty. Nearby parks and conservation areas, such as the Lincoln Memorial Garden & Nature Center and Carpenter Park Nature Preserve, offer trails for hiking, birdwatching, and picnicking. Additionally, the Sangamon Valley Trail provides opportunities for biking and jogging through scenic landscapes. Overall, Jerome provides ample outdoor recreation opportunities for nature enthusiasts and those seeking to enjoy the surrounding natural beauty.