At the south rim the average high is in the upper 50sF and the average low is in the mid 20s. See the link below for a TON of data from last year about that location. I don't think they have reliable weather data like that for the bottom of the canyon, but it will be noticeably warmer at the bottom than at the rim.
Mrs. Lift, also known as Momma, was the main antagonist of Throw Momma from the Train. She was Owen's old mother who mistreated him and his friend Larry. At the end of the film, it was revealed by Owen that she died from natural causes. She was portrayed by Anne Ramsey.
Wreck-It Ralph: [voice-over] But the best part of my day is when the Nicelanders throw me off the roof. Because when they lift me up, I get a perfect view of Sugar Rush, and I can watch Vanellope racing. The kid's a natural, and the players love her, glitch and all, just like I knew they would. [Over at Sugar Rush, Venellope wins her race, receives her trophy, and fist-bumps the girl playing the game]