Monthly Means and Extremes Period: 1971-2000
Adel, OR
Parameter Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Mean Temperature(F)
Maximum 41.7 45.4 51.6 58.9 67.9 77.6 86.8 86.3 77.1 65.5 48.6 41.7 62.4
Minimum 20.1 22.9 26.6 31.4 38.2 45.4 51.0 49.4 40.8 32.6 25.7 20.7 33.7
Mean 30.9 34.2 39.1 45.2 53.1 61.5 68.9 67.9 59.0 49.1 37.2 31.2 48.1
Extreme Temperature(F)
Maximum 63 71 75 89 94 105 107 104 101 91 77 64 104
Minimum -12 -10 3 15 26 31 34 34 25 6 2 -22 -3
Precipitation(inches)
Monthly mean .89 .97 .93 .93 .83 .66 .38 .38 .48 .63 1.14 .96 9.18
Extreme 24 hr 1.10 1.65 1.01 1.19 .82 1.67 .94 .90 1.17 1.10 .68 1.11 1.19
Snowfall(inches)
Monthly mean 3.90 3.95 3.01 1.21 .78 .00 .00 .00 .10 .38 2.46 4.24 26.25
Average number of days
Temperature
Maximum 90 or more .0 .0 .0 .0 .7 5.4 14.5 12.5 2.6 .2 .0 .0 37.4
Maximum 32 or less 4.4 .9 .5 .0 .0 .0 .0 .0 .0 .1 .5 4.3 9.8
Minimum 32 or less 25.8 22.5 22.9 15.7 4.8 .3 .0 .0 2.7 10.1 20.5 26.2 140.6
Minimum 0 or less 1.0 .3 .0 .0 .0 .0 .0 .0 .0 .0 .0 .8 1.4
Precipitation
.01 inches or more 7.0 7.4 8.1 6.4 6.3 4.8 2.4 2.8 3.5 5.7 8.6 7.0 77.1
.10 inches or more 2.9 3.6 3.2 3.0 2.9 1.9 1.3 1.5 1.9 2.3 4.2 2.8 33.1
.50 inches or more .5 .4 .5 .3 .3 .5 .2 .2 .4 .2 .4 .3 4.1
1.00 inches or more .1 .1 .1 .1 .0 .1 .0 .0 .1 .1 .0 .1 .5
Degree Days
Heating days @ 65 (F) 1017 810 776 577 333 126 26 35 180 445 776 993 5796
Growing days @ 50 (F) 0 1 6 47 196 399 635 589 325 128 8 0 2479