Toyota 2008 Prius Quick Reference Manual page 217

Outside temperature display
The outside temperature is shown ranging from -22 °F (-30 °C) up
to 122 °F (50 °C) at the upper right of the energy consumption or
energy monitor screen or the upper left/right of the air conditioner
screen.
Vehicles with navigation system and vehicles without navigation
system (Type A)
Vehicles without navigation system (Type B)
PRIUS_U_(L/O_0802)
MPG
MPG
ITY31P017
3-1. Using the touch screen
3
189