dataframe.py

#initialize dataframe
df_temp = pd.DataFrame()

#populate date and average temperature fields (cast string date to datetime and convert temperature from tenths of Celsius to Fahrenheit)
df_temp['date'] = [datetime.strptime(d, "%Y-%m-%dT%H:%M:%S") for d in dates_temp]
df_temp['avgTemp'] = [float(v)/10.0*1.8 + 32 for v in temps]
df_temp['minTemp'] = [float(v)/10.0*1.8 + 32 for v in minT]
df_temp['maxTemp'] = [float(v)/10.0*1.8 + 32 for v in maxT]
# Convert mm/day to inch/day
df_temp['prcp'] = [float(v)/25.54 for v in prcp]

df_temp.head()

df_temp.plot(kind='line',x='date',y='avgTemp')