Please follow https://www.wcc.nrcs.usda.gov/webmap/index.html#elements=&networks=SNOW&states=!&counties=!&hucs=&minElevation=&maxElevation=&elementSelectType=all&activeOnly=true&hucLabels=false&stationLabels=&overlays=&hucOverlays=&mode=stations&openSections=dataElement,parameter,date,elements,location,networks&controlsOpen=true&popup=&base=esriNgwm&dataElement=PREC¶meter=PCTAVG&frequency=DAILY&duration=null&customDuration=&dayPart=E&year=2017&month=5&day=1&monthPart=E&lat=67.07&lon=-114.79&zoom=4.