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3/22/2021 Average Weather in Golden,Colorado,United States,Year Round-Weather Spark <br /> Methodology <br /> For each hour between 8:00 AM and 9:00 PM of each day in the analysis period(1980 to 2016),independent scores are computed for perceived temperature,cloud cover,and total precipitation.Those <br /> scores are combined into a single hourly composite score,which is then aggregated into days,averaged over all the years in the analysis period,and smoothed. <br /> Our cloud cover score is 10 for fully clear skies,falling linearly to 9 for mostly clear skies,and to 1 for fully overcast skies. <br /> Our precipitation score,which is based on the three-hour precipitation centered on the hour in question,is 10 for no precipitation,falling linearly to 9 for trace precipitation,and to 0 for 0.04 inches of <br /> precipitation or more. <br /> Our tourism temperature score is 0 for perceived temperatures below 50°F,rising linearly to 9 for 65°F,to 10 for 75°F,falling linearly to 9 for 80°F,and to 1 for 90°F or hotter. <br /> Our beach/pool temperature score is 0 for perceived temperatures below 65°F,rising linearly to 9 for 75°F,to 10 for 82°F,falling linearly to 9 for 90°F,and to 1 for 1007 or hotter. <br /> Growing Season <br /> Definitions of the growing season vary throughout the world,but for the purposes of this report,we define it as the longest continuous period of non-freezing temperatures(>_ 327)in the year(the <br /> calendar year in the Northern Hemisphere,or from July 1 until June 30 in the Southern Hemisphere). <br /> The growing season in Golden typically lasts for 5.2 months(160 days),from around May 3 to around October 10,rarely starting before April 13 or after May 20,and rarely ending before September 17 or <br /> after November 2. <br /> Time Spent in Various Temperature Bands and the Growing Season <br /> ° growing season <br /> May 20 <br /> 90% • ' 90% 10% <br /> 80% 20% <br /> 70% s 30% <br /> 60% 40% <br /> 50% 50% <br /> 40% 60% <br /> 30% " 70% <br /> 20% 80% <br /> 10% v , 's,: 90% <br /> o — o <br /> 0 /o Jan Feb Mar Apr May Jun Jul Aug Sep Oct isiov uec 100 /o <br /> frigid freezing very cold <br /> 15°F 32°F 45°F 55T 657 75°F 85°F 95T <br /> https://weatherspark.com/y/3539/Average-Weather-in-Golden-Colorado-United-States-Year-Round#Sections-Summary 15/19 <br />