Below is shown some panda commands for retrieving maximum, minimum and average monthly precipitation from daily precipitation data.
The daily precipitation is assumed to be in a pandas DataFrame, with its index in Datetime index format.
1 - Daily to monthly precipitation
df_m=df1.resample('M').sum()
2 - Maximum monthly precipitation
p_max=df_m.groupby(df_m.index.month).max()
3 - Minimum monthly precipitation
p_min=df_m.groupby(df_m.index.month).min()
4 - Average monthly precipitation
p_avg=df_m.groupby(df_m.index.month).mean()
