Final answer:
The weather in Fairfax was warmer than the weather in Weston.
Step-by-step explanation:
In this question, the student is asked to determine if the weather in Fairfax was warmer or cooler than the weather in Weston based on the given temperatures. The temperature in Weston was 5 degrees Celsius, while the temperature in Fairfax was 12 degrees Celsius. Since 12 is a higher number than 5, we can conclude that the weather in Fairfax was warmer than the weather in Weston.