Monthly Means and Extremes
P-Ranch, Oregon Period: 1961-1990
Parameter Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Mean Temperature (F)
Maximum 42.0 48.0 53.4 60.7 68.5 77.0 85.6 85.0 77.1 66.9 51.1 42.3 63.3
Minimum 20.4 24.2 26.8 30.6 37.3 43.8 46.6 44.4 36.4 30.0 27.1 21.5 32.8
Mean 31.2 36.2 40.1 45.7 52.9 60.4 66.2 64.7 56.7 48.5 39.1 32.0 48.0
Extreme Temperature (F)
Maximum 65 71 77 87 93 96 99 103 98 92 76 65 96
Minimum -32 -18 -6 10 18 27 29 26 15 1 -5 -27 -11
Precipitation (inches)
Monthly mean 1.05 .84 1.18 1.08 1.27 1.18 .39 .74 .76 .90 1.36 1.14 11.70
Extreme 24 hour 1.56 1.08 1.05 1.02 1.52 1.97 1.15 1.49 1.35 1.28 .80 1.00 1.56
Snowfall (inches)
Monthly mean 4.44 1.87 1.96 1.17 .31 .00 .00 .00 .00 .34 1.67 4.16 17.50
Average number of days
Temperature
Maximum 90 or more .0 .0 .0 .0 .2 2.6 8.7 9.8 1.6 .1 .0 .0 26.0
Maximum 32 or less 4.9 .9 .2 .0 .0 .0 .0 .0 .0 .0 .6 4.8 9.8
Minimum 32 or less 25.3 21.6 22.3 18.1 7.2 1.1 .2 1.0 9.2 18.8 20.3 24.1 171.1
Minimum 0 or less 2.0 .7 .0 .0 .0 .0 .0 .0 .0 .0 .2 1.6 3.3
Precipitation
.01 inches or more 6.6 6.1 8.1 7.0 6.7 5.9 2.3 3.3 3.9 4.8 8.2 8.1 76.2
.10 inches or more 3.5 2.6 3.8 3.8 3.5 3.4 1.2 2.1 2.4 2.6 4.8 3.9 37.3
.50 inches or more .4 .3 .3 .2 .6 .4 .2 .5 .3 .4 .4 .4 4.2
1.00 inches or more .1 .0 .0 .1 .1 .1 .0 .1 .0 .0 .0 .0 .5
Degree Days
Heating days @ 65F 1048 813 771 579 379 169 48 75 256 512 778 1022 6388
Growing days @ 50F 0 2 7 45 145 318 501 456 226 72 7 1 1796
Oregon Climate Service