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MWMC FACIL['rlES PLAN <br /> <br />The average relative humidity in midaftemoon is about 60 percent. Humidity is higher at <br />night, and the average at dawn is about 90 percent. The percentage of possible sunshine is <br />60 percent in summer and 25 percent in winter. The prevailing wind is from the west- <br />northwest. Average windspeed is highest, 8 miles per hour, in winter. In most winters one <br />or two storms over the whole area bring strong and sometimes damaging winds, and in <br />some years the accompanying heavy rains cause serious flooding. Every few years, in <br />winter or summer, a large continental airmass from the east causes abnormal temperatures. <br />During winter, several consecutive days are well below freezing; in summer a week or <br />longer is sweltering. Tables 2.2.1-1 and 2.2.1-2 summarize these data. <br /> <br /> TABLE 2.2.1-1 <br /> Average weather in Eugene, Oregon <br /> MWMC Facilities Plan, Eugene-Springfield <br /> <br /> Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec <br /> <br />Average temp. 39.8 42.8 46.3 49.8 54.8 60.2 66.2 66.4 61.7 52.6 44.7 39.5 <br />(°F) <br /> <br />High temperature 45.0 48.4 50.1 55.2 59.7 64.7 69.9 69.3 66.6 56.8 50.3 44.9 <br />(°F) <br /> <br />low temperature 31.2 35.5 41.3 44.7 50.9 55.8 62.1 62.2 57.4 47.9 37.2 32.6 <br />(°F) <br /> <br />Precipitation (in) 7.65 6.35 5.80 3.66 2.66 1.53 0.64 0.99 1.54 3.35 8.44 8.29 <br />Dayswith precip. 17.1 15.8 17.3 14.2 10.8 7.4 3.2 4.1 5.9 10.9 17.7 17.3 <br /> <br />Source: National Climatic Data Center, Asheville, North Carolina 28801, www.ncdc.noaa.gov <br /> <br /> TABLE 2.2.1-2 <br /> Normal climate around Eugene, Oregon <br /> MWMC Facilities Plan, Eugene-Springfield <br /> <br /> Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec <br /> <br />Wind speed 7,8 7,8 8.2 7.7 7.4 7.6 8.0 7.6 7.4 6.7 7.4 7.6 <br />(mph) <br /> <br />Morning humidity 92 92 91 90 91 90 87 88 89 93 93 92 <br />(%) <br />Afternoon <br /> 80 72 65 58 55 50 39 39 43 62 78 84 <br />humidity (%) <br /> <br />Sunshine (%) 28 38 48 52 57 56 69 66 62 44 28 23 <br /> <br />Days clear of <br /> 2 3 3 4 6 8 16 14 12 5 2 <br />clouds <br /> <br />Partly cloudy 4 4 6 7 9 8 8 9 8 9 6 4 <br />days <br /> <br />Cloudy days 25 21 22 19 17 14 7 8 9 17 23 26 <br />Snowfall (in) 1.5 1.4 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 1.8 <br /> <br />Source: http://www.city-data.com/city/Eu.qene-Ore.qon.html <br /> <br />2-2 MWMC_2.0_REV23.DOC <br /> <br /> <br />