To find the change in temperature, you subtract the initial temperature from the final temperature.
The initial temperature at 4 a.m. was -3 degrees, and the final temperature at 5:00 p.m. was 24 degrees.
Change in temperature = Final temperature - Initial temperature = 24 degrees - (-3 degrees) = 24 degrees + 3 degrees = 27 degrees
Thus, the change in temperature that day was 27 degrees.