Willows, California is a small city located in the northern part of the state, in the Sacramento Valley. The climate in Willows is characterized as a Mediterranean climate, with hot, dry summers and cool, wet winters. Average temperatures range from the mid-90s in summer to the mid-50s in winter.

The hydrology of Willows is influenced by the nearby Sacramento River, which provides water for irrigation and supports diverse aquatic life. Additionally, the city has several creeks that flow through the area, contributing to the region's hydrology.

Outdoor recreation opportunities in Willows are abundant. The city is surrounded by scenic landscapes, including the Mendocino National Forest to the west and the Sutter Buttes to the east. These natural areas offer opportunities for hiking, camping, fishing, and wildlife viewing. Willows is also home to the Sacramento National Wildlife Refuge Complex, which provides habitat for migratory birds and offers birdwatching opportunities.

Overall, Willows, California offers a pleasant Mediterranean climate, diverse hydrology constituents, and numerous outdoor recreation opportunities for residents and visitors to enjoy.