Answer
4.7 degrees
Work Step by Step
April: -9.1
May: 14.4
October: 8.8
Average: $\frac{-9.1+14.4+8.8}{3}=\frac{14.4-9.1+8.8}{3}=\frac{5.3+8.8}{3}=\frac{14.1}{3}=4.7$ degrees Fahrenheit
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