Basically, you need to convert the text from the four entries into (time, temperature) data points.
Entry 1: It says it starts at 8 AM and the temperature was "quite warm."
(8 AM, "quite warm")
Entry 2: It says the time is "about midmorining" (so between 8 AM and 12 PM - say 10 AM), and the temperature dropped to 63F. Since it says the temperature dropped to this temperature, we can say that for entry 1, the temperature was higher than 63 F - say, 73 F.
(8 AM, 73 F) - revised first entry
(10 AM, 63 F)
There is a storm for about 1 hour.
Entry 3: After the storm, there was a "warm breeze." Since the storm was about 1 hour, we could say the time was 11 AM. While a temeprature isn't given, according to the North Carolina Climate Office (climate.ncsu.edu/edu/Thunderstorm), most storms result in cooling of 10-15 degrees. Let's put it at about 10 degrees.
(11 AM, ~53 F)
Entry 4: It says the temeprature steadily warmed, and at 4 PM, the temperature 89F.
(4 PM, 89 F)
Now we have four data points that fit the text from the given entries:
(8 AM, 73 F)
(10 AM, 63 F)
(11 AM, 53 F)
(4 PM, 89 F)
With these points, we can make a table and graph (see attached).