def High(value):
                if value == row['PRCP']:
                    maxPrec = max(row['PRCP'] for row in reader)
                    print(row['DATE'])
                    return maxPrec
                elif value == row['SNOW']:
                    maxSnow = max(row['SNOW'] for row in reader)
                    print(row['DATE'])
                    return maxSnow
                elif value == row['TAVG']:
                    maxTavg = max(row['TAVG'] for row in reader)
                    return maxTavg
                elif value == row['TMIN']:
                    maxTmin = max(row['TMIN'] for row in reader)
                    print(row['DATE'])
                    return maxTmin
                elif value == row['TMAX']:
                    maxTmax = max(row['TMAX'] for row in reader)
                    return maxTmax

    print(High(row['PRCP']))

"STATION","NAME","DATE","PRCP","SNOW","SNWD","TAVG","TMAX","TMIN"
"USW00003894","CLARKSVILLE OUTLAW AIRPORT, TN US","2001-04-01",,,,"46","56","35"
"USW00003894","CLARKSVILLE OUTLAW AIRPORT, TN US","2001-04-02",,,,"52","59","45"
"USW00003894","CLARKSVILLE OUTLAW AIRPORT, TN US","2001-04-03","0.01",,,"58","66","50"
"USW00003894","CLARKSVILLE OUTLAW AIRPORT, TN US","2001-04-04","0.00",,,"62","71","53"
"USW00003894","CLARKSVILLE OUTLAW AIRPORT, TN US","2001-04-05","0.00",,,"63","75","51"
"USW00003894","CLARKSVILLE OUTLAW AIRPORT, TN US","2001-04-06","0.00",,,"73","82","63"
"USW00003894","CLARKSVILLE OUTLAW AIRPORT, TN US","2001-04-07","0.00",,,"78","85","70"
"USW00003894","CLARKSVILLE OUTLAW AIRPORT, TN US","2001-04-08","0.00",,,"75","83","67"

import pandas as pd
data = pd.read_csv('path_to_your_filename')
max = data['PRCP'].max()
min = data['PRCP'].min()