Monthly Means and Extremes Period: 1971-2000
Brothers, OR
Parameter Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Mean Temperature(F)
Maximum 36.6 41.1 47.6 55.1 62.6 71.5 80.3 80.2 72.0 61.3 44.4 37.5 57.5
Minimum 16.2 19.4 21.8 24.7 30.6 37.5 41.8 40.8 33.4 26.9 21.5 16.4 27.6
Mean 26.4 30.3 34.7 39.9 46.6 54.5 61.1 60.5 52.7 44.1 33.0 27.0 42.6
Extreme Temperature(F)
Maximum 61 67 70 85 92 94 98 99 97 87 72 60 99
Minimum -22 -19 -10 7 8 12 19 22 11 2 -16 -30 -30
Precipitation(inches)
Monthly mean .81 .43 .70 .65 1.18 .81 .64 .65 .54 .67 1.04 .96 9.08
Extreme 24 hr 1.30 .38 .50 .99 1.70 .63 1.96 1.30 1.19 .64 1.10 1.03 1.96
Snowfall(inches)
Monthly mean 4.74 2.76 2.17 1.06 .67 .00 .00 .00 .03 .61 3.10 5.66 21.26
Average number of days
Temperature
Maximum 90 or more .0 .0 .0 .0 .2 .6 5.4 4.9 .8 .0 .0 .0 12.0
Maximum 32 or less 7.9 3.8 .6 .0 .0 .0 .0 .0 .0 .1 2.4 7.0 22.4
Minimum 32 or less 28.6 25.8 28.0 23.2 16.6 7.4 2.9 3.3 11.0 21.7 25.1 29.0 221.4
Minimum 0 or less 2.5 1.2 .1 .0 .0 .0 .0 .0 .0 .0 .6 2.0 7.1
Precipitation
.01 inches or more 6.5 6.5 7.5 6.5 7.2 5.3 3.6 3.7 3.9 5.2 8.2 8.0 76.1
.10 inches or more 2.8 1.5 2.8 2.1 3.5 2.9 1.7 1.6 1.8 2.4 3.3 3.2 29.8
.50 inches or more .3 .0 .0 .2 .4 .2 .3 .4 .2 .1 .5 .3 2.4
1.00 inches or more .0 .0 .0 .0 .1 .0 .0 .1 .0 .0 .1 .0 .4
Degree Days
Heating days @ 65 (F) 1157 952 905 706 528 305 140 150 340 615 931 1158 7831
Growing days @ 50 (F) 0 0 0 19 79 195 381 362 170 41 1 0 1261