Amazon offers the La Crosse Technology 3-in-1 Wireless Weather Station for $39.99 with free shipping. That's the lowest price we could find by $20, excluding the below mention. It functions as a weather station, Bluetooth speaker, and alarm clock. Features include a color LCD, dual alarms with three sound options, USB charging port, and color-changing LED base.

A close price: Home Depot has it for $41.19 via in-store pickup.