Lyon, Mississippi is a small town located in Coahoma County in the Mississippi Delta region. The climate in Lyon is considered humid subtropical, with hot, humid summers and mild winters. Summers are characterized by high temperatures reaching the 90s°F (32°C), while winters are generally mild with temperatures ranging from the 40s°F (4°C) to the 60s°F (15°C). Precipitation is evenly distributed throughout the year, with occasional thunderstorms and heavy rainfall.

Hydrologically, Lyon sits near the Mississippi River and its tributaries, such as the nearby Sunflower River. These waterways provide opportunities for fishing, boating, and other water-based recreational activities. The region's hydrology also contributes to rich agricultural activities, as the fertile soil is ideal for growing crops such as cotton and soybeans.

Outdoor enthusiasts in Lyon can explore the surrounding area's natural beauty through activities like hiking, birdwatching, and wildlife spotting. Nearby Holly Ridge Wildlife Management Area offers hunting opportunities for deer, turkey, and small game. Additionally, the area's flat terrain and extensive network of country roads make it perfect for cycling and leisurely drives.

Overall, Lyon, Mississippi provides a pleasant climate, access to waterways, and diverse outdoor recreation opportunities for residents and visitors alike.