1 Rain Season: April 1st to Sept 30th. 2 Snow Season: Oct. 1st to May 31st. 3 Snow manually measured 4 Rain measurement is verified against an official 4" rain gauge checked daily. 5 At times "Last Tip" time may not reflect accurately due to manually corrected rain input. 6 During snow season, snow is melted down and water content is measured and added to rain totals.