Cloudiest month

You're given the following dataset, containing information about a year's worth of weather. Using this data, calculate the percent of time it was cloudy each month.

To help get you started, below is code (Python) to import the referenced dataset:

Import libraries
%matplotlib inline
import pandas as pd
import numpy as np
import matplotlib.pyplot as plt
# Import data
df = pd.read_csv('https://raw.githubusercontent.com/erood/interviewqs.com_code_snippets/master/Datasets/weather_2012.csv')